udp6_usrreq.c revision 1.3
1 /* $NetBSD: udp6_usrreq.c,v 1.3 1999/07/03 21:30:20 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, 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 <sys/param.h> 68 #include <sys/malloc.h> 69 #include <sys/mbuf.h> 70 #include <sys/protosw.h> 71 #include <sys/socket.h> 72 #include <sys/socketvar.h> 73 #include <sys/errno.h> 74 #include <sys/stat.h> 75 #include <sys/systm.h> 76 #ifdef __NetBSD__ 77 #include <sys/proc.h> 78 #endif 79 80 #include <net/if.h> 81 #include <net/route.h> 82 #include <net/if_types.h> 83 84 #include <netinet/in.h> 85 #include <netinet/in_var.h> 86 #include <netinet6/in6_systm.h> 87 #include <netinet6/ip6.h> 88 #include <netinet6/in6_pcb.h> 89 #include <netinet6/ip6_var.h> 90 #include <netinet6/icmp6.h> 91 #include <netinet6/udp6.h> 92 #include <netinet6/udp6_var.h> 93 94 #ifdef IPSEC 95 #include <netinet6/ipsec.h> 96 #endif /*IPSEC*/ 97 98 #include "faith.h" 99 100 /* 101 * UDP protocol inplementation. 102 * Per RFC 768, August, 1980. 103 */ 104 105 struct in6pcb *udp6_last_in6pcb = &udb6; 106 107 static int in6_mcmatch __P((struct in6pcb *, struct in6_addr *, struct ifnet *)); 108 static void udp6_detach __P((struct in6pcb *)); 109 static void udp6_notify __P((struct in6pcb *, int)); 110 111 void 112 udp6_init() 113 { 114 udb6.in6p_next = udb6.in6p_prev = &udb6; 115 } 116 117 static int 118 in6_mcmatch(in6p, ia6, ifp) 119 struct in6pcb *in6p; 120 register struct in6_addr *ia6; 121 struct ifnet *ifp; 122 { 123 struct ip6_moptions *im6o = in6p->in6p_moptions; 124 struct in6_multi_mship *imm; 125 126 if (im6o == NULL) 127 return 0; 128 129 for (imm = im6o->im6o_memberships.lh_first; imm != NULL; 130 imm = imm->i6mm_chain.le_next) { 131 if ((ifp == NULL || 132 imm->i6mm_maddr->in6m_ifp == ifp) && 133 IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr, 134 ia6)) 135 return 1; 136 } 137 return 0; 138 } 139 140 int 141 udp6_input(mp, offp, proto) 142 struct mbuf **mp; 143 int *offp, proto; 144 { 145 struct mbuf *m = *mp; 146 register struct ip6_hdr *ip6; 147 register struct udphdr *uh; 148 register struct in6pcb *in6p; 149 struct mbuf *opts = 0; 150 int off = *offp; 151 int plen, ulen; 152 struct sockaddr_in6 udp_in6; 153 154 #if defined(NFAITH) && 0 < NFAITH 155 if (m->m_pkthdr.rcvif) { 156 if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) { 157 /* send icmp6 host unreach? */ 158 m_freem(m); 159 return IPPROTO_DONE; 160 } 161 } 162 #endif 163 udp6stat.udp6s_ipackets++; 164 165 IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE); 166 167 ip6 = mtod(m, struct ip6_hdr *); 168 plen = ntohs(ip6->ip6_plen) - off + sizeof(*ip6); 169 uh = (struct udphdr *)((caddr_t)ip6 + off); 170 ulen = ntohs((u_short)uh->uh_ulen); 171 172 if (plen != ulen) { 173 udp6stat.udp6s_badlen++; 174 goto bad; 175 } 176 177 /* 178 * Checksum extended UDP header and data. 179 */ 180 if (uh->uh_sum == 0) 181 udp6stat.udp6s_nosum++; 182 else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) { 183 udp6stat.udp6s_badsum++; 184 goto bad; 185 } 186 187 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 188 struct in6pcb *last; 189 190 /* 191 * Deliver a multicast datagram to all sockets 192 * for which the local and remote addresses and ports match 193 * those of the incoming datagram. This allows more than 194 * one process to receive multicasts on the same port. 195 * (This really ought to be done for unicast datagrams as 196 * well, but that would cause problems with existing 197 * applications that open both address-specific sockets and 198 * a wildcard socket listening to the same port -- they would 199 * end up receiving duplicates of every unicast datagram. 200 * Those applications open the multiple sockets to overcome an 201 * inadequacy of the UDP socket interface, but for backwards 202 * compatibility we avoid the problem here rather than 203 * fixing the interface. Maybe 4.5BSD will remedy this?) 204 */ 205 206 /* 207 * In a case that laddr should be set to the link-local 208 * address (this happens in RIPng), the multicast address 209 * specified in the received packet does not match with 210 * laddr. To cure this situation, the matching is relaxed 211 * if the receiving interface is the same as one specified 212 * in the socket and if the destination multicast address 213 * matches one of the multicast groups specified in the socket. 214 */ 215 216 /* 217 * Construct sockaddr format source address. 218 */ 219 bzero(&udp_in6, sizeof(udp_in6)); 220 udp_in6.sin6_len = sizeof(struct sockaddr_in6); 221 udp_in6.sin6_family = AF_INET6; 222 udp_in6.sin6_port = uh->uh_sport; 223 udp_in6.sin6_addr = ip6->ip6_src; 224 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 225 udp_in6.sin6_addr.s6_addr16[1] = 0; 226 if (m->m_pkthdr.rcvif) { 227 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) { 228 udp_in6.sin6_scope_id = 229 m->m_pkthdr.rcvif->if_index; 230 } else 231 udp_in6.sin6_scope_id = 0; 232 } else 233 udp_in6.sin6_scope_id = 0; 234 /* 235 * KAME note: usually we drop udphdr from mbuf here. 236 * We need udphdr for IPsec processing so we do that later. 237 */ 238 239 /* 240 * Locate pcb(s) for datagram. 241 * (Algorithm copied from raw_intr().) 242 */ 243 last = NULL; 244 for (in6p = udb6.in6p_next; 245 in6p != &udb6; 246 in6p = in6p->in6p_next) { 247 if (in6p->in6p_lport != uh->uh_dport) 248 continue; 249 if (!IN6_IS_ADDR_ANY(&in6p->in6p_laddr)) { 250 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, 251 &ip6->ip6_dst) && 252 !in6_mcmatch(in6p, &ip6->ip6_dst, 253 m->m_pkthdr.rcvif)) 254 continue; 255 } 256 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 257 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, 258 &ip6->ip6_src) || 259 in6p->in6p_fport != uh->uh_sport) 260 continue; 261 } 262 263 if (last != NULL) { 264 struct mbuf *n; 265 266 #ifdef IPSEC 267 /* 268 * Check AH/ESP integrity. 269 */ 270 if (last != NULL && ipsec6_in_reject(m, last)) { 271 ipsec6stat.in_polvio++; 272 /* do not inject data into pcb */ 273 } else 274 #endif /*IPSEC*/ 275 if ((n = m_copy(m, 0, M_COPYALL)) != NULL) { 276 /* 277 * KAME NOTE: do not 278 * m_copy(m, offset, ...) above. 279 * sbappendaddr() expects M_PKTHDR, 280 * and m_copy() will copy M_PKTHDR 281 * only if offset is 0. 282 */ 283 if (last->in6p_flags & IN6P_CONTROLOPTS) { 284 ip6_savecontrol(last, &opts, 285 ip6, n); 286 } 287 288 m_adj(m, off + sizeof(struct udphdr)); 289 if (sbappendaddr(&last->in6p_socket->so_rcv, 290 (struct sockaddr *)&udp_in6, 291 n, opts) == 0) { 292 m_freem(n); 293 if (opts) 294 m_freem(opts); 295 udp6stat.udp6s_fullsock++; 296 } else 297 sorwakeup(last->in6p_socket); 298 opts = 0; 299 } 300 } 301 last = in6p; 302 /* 303 * Don't look for additional matches if this one does 304 * not have either the SO_REUSEPORT or SO_REUSEADDR 305 * socket options set. This heuristic avoids searching 306 * through all pcbs in the common case of a non-shared 307 * port. It assumes that an application will never 308 * clear these options after setting them. 309 */ 310 if ((last->in6p_socket->so_options & 311 (SO_REUSEPORT|SO_REUSEADDR)) == 0) 312 break; 313 } 314 315 if (last == NULL) { 316 /* 317 * No matching pcb found; discard datagram. 318 * (No need to send an ICMP Port Unreachable 319 * for a broadcast or multicast datgram.) 320 */ 321 udp6stat.udp6s_noport++; 322 udp6stat.udp6s_noportmcast++; 323 goto bad; 324 } 325 #ifdef IPSEC 326 /* 327 * Check AH/ESP integrity. 328 */ 329 if (last != NULL && ipsec6_in_reject(m, last)) { 330 ipsec6stat.in_polvio++; 331 goto bad; 332 } 333 #endif /*IPSEC*/ 334 if (last->in6p_flags & IN6P_CONTROLOPTS) 335 ip6_savecontrol(last, &opts, ip6, m); 336 337 m_adj(m, off + sizeof(struct udphdr)); 338 if (sbappendaddr(&last->in6p_socket->so_rcv, 339 (struct sockaddr *)&udp_in6, 340 m, opts) == 0) { 341 udp6stat.udp6s_fullsock++; 342 goto bad; 343 } 344 sorwakeup(last->in6p_socket); 345 return IPPROTO_DONE; 346 } 347 /* 348 * Locate pcb for datagram. 349 */ 350 in6p = udp6_last_in6pcb; 351 if (in6p->in6p_lport != uh->uh_dport || 352 in6p->in6p_fport != uh->uh_sport || 353 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src) || 354 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) { 355 in6p = in6_pcblookup(&udb6, 356 &ip6->ip6_src, uh->uh_sport, 357 &ip6->ip6_dst, uh->uh_dport, 358 IN6PLOOKUP_WILDCARD); 359 if (in6p) 360 udp6_last_in6pcb = in6p; 361 udp6stat.udp6ps_pcbcachemiss++; 362 } 363 if (in6p == 0) { 364 udp6stat.udp6s_noport++; 365 if (m->m_flags & M_MCAST) { 366 printf("UDP6: M_MCAST is set in a unicast packet.\n"); 367 udp6stat.udp6s_noportmcast++; 368 goto bad; 369 } 370 icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0); 371 return IPPROTO_DONE; 372 } 373 #ifdef IPSEC 374 /* 375 * Check AH/ESP integrity. 376 */ 377 if (in6p != NULL && ipsec6_in_reject(m, in6p)) { 378 ipsec6stat.in_polvio++; 379 goto bad; 380 } 381 #endif /*IPSEC*/ 382 383 /* 384 * Construct sockaddr format source address. 385 * Stuff source address and datagram in user buffer. 386 */ 387 bzero(&udp_in6, sizeof(udp_in6)); 388 udp_in6.sin6_len = sizeof(struct sockaddr_in6); 389 udp_in6.sin6_family = AF_INET6; 390 udp_in6.sin6_port = uh->uh_sport; 391 udp_in6.sin6_addr = ip6->ip6_src; 392 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 393 udp_in6.sin6_addr.s6_addr16[1] = 0; 394 if (m->m_pkthdr.rcvif) { 395 if (IN6_IS_SCOPE_LINKLOCAL(&udp_in6.sin6_addr)) 396 udp_in6.sin6_scope_id = m->m_pkthdr.rcvif->if_index; 397 else 398 udp_in6.sin6_scope_id = 0; 399 } else 400 udp_in6.sin6_scope_id = 0; 401 if (in6p->in6p_flags & IN6P_CONTROLOPTS) 402 ip6_savecontrol(in6p, &opts, ip6, m); 403 404 m_adj(m, off + sizeof(struct udphdr)); 405 if (sbappendaddr(&in6p->in6p_socket->so_rcv, 406 (struct sockaddr *)&udp_in6, 407 m, opts) == 0) { 408 udp6stat.udp6s_fullsock++; 409 goto bad; 410 } 411 sorwakeup(in6p->in6p_socket); 412 return IPPROTO_DONE; 413 bad: 414 if (m) 415 m_freem(m); 416 if (opts) 417 m_freem(opts); 418 return IPPROTO_DONE; 419 } 420 421 /* 422 * Notify a udp user of an asynchronous error; 423 * just wake up so tat he can collect error status. 424 */ 425 static void 426 udp6_notify(in6p, errno) 427 register struct in6pcb *in6p; 428 int errno; 429 { 430 in6p->in6p_socket->so_error = errno; 431 sorwakeup(in6p->in6p_socket); 432 sowwakeup(in6p->in6p_socket); 433 } 434 435 void 436 udp6_ctlinput(cmd, sa, ip6, m, off) 437 int cmd; 438 struct sockaddr *sa; 439 register struct ip6_hdr *ip6; 440 struct mbuf *m; 441 int off; 442 { 443 register struct udphdr *uhp; 444 struct udphdr uh; 445 446 #if 0 447 if (cmd == PRC_IFNEWADDR) 448 in6_mrejoin(&udb6); 449 else 450 #endif 451 if (!PRC_IS_REDIRECT(cmd) && 452 ((unsigned)cmd >= PRC_NCMDS || inet6ctlerrmap[cmd] == 0)) 453 return; 454 if (ip6) { 455 /* 456 * XXX: We assume that when IPV6 is non NULL, 457 * M and OFF are valid. 458 */ 459 if (m->m_len < off + sizeof(uh)) { 460 /* 461 * this should be rare case, 462 * so we compromise on this copy... 463 */ 464 m_copydata(m, off, sizeof(uh), (caddr_t)&uh); 465 uhp = &uh; 466 } else 467 uhp = (struct udphdr *)(mtod(m, caddr_t) + off); 468 (void) in6_pcbnotify(&udb6, sa, uhp->uh_dport, &ip6->ip6_src, 469 uhp->uh_sport, cmd, udp6_notify); 470 } else { 471 (void) in6_pcbnotify(&udb6, sa, 0, &zeroin6_addr, 0, cmd, 472 udp6_notify); 473 } 474 } 475 476 int 477 udp6_output(in6p, m, addr6, control) 478 register struct in6pcb *in6p; 479 register struct mbuf *m; 480 struct mbuf *addr6, *control; 481 { 482 register int ulen = m->m_pkthdr.len; 483 int plen = sizeof(struct udphdr) + ulen; 484 struct ip6_hdr *ip6; 485 struct udphdr *udp6; 486 struct in6_addr laddr6; 487 int s = 0, error = 0; 488 struct ip6_pktopts opt, *stickyopt = in6p->in6p_outputopts; 489 int priv = 0; 490 struct proc *p = curproc; /* XXX */ 491 492 if (p && !suser(p->p_ucred, &p->p_acflag)) 493 priv = 1; 494 if (control) { 495 if ((error = ip6_setpktoptions(control, &opt, priv)) != 0) 496 goto release; 497 in6p->in6p_outputopts = &opt; 498 } 499 500 if (addr6) { 501 laddr6 = in6p->in6p_laddr; 502 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 503 error = EISCONN; 504 goto release; 505 } 506 /* 507 * Must block input while temporarily connected. 508 */ 509 s = splnet(); 510 error = in6_pcbconnect(in6p, addr6); 511 if (error) { 512 splx(s); 513 goto release; 514 } 515 } else { 516 if (IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 517 error = ENOTCONN; 518 goto release; 519 } 520 } 521 /* 522 * Calculate data length and get a mbuf 523 * for UDP and IP6 headers. 524 */ 525 M_PREPEND(m, sizeof(struct ip6_hdr) + sizeof(struct udphdr), M_DONTWAIT); 526 if (m == 0) { 527 error = ENOBUFS; 528 goto release; 529 } 530 531 /* 532 * Stuff checksum and output datagram. 533 */ 534 ip6 = mtod(m, struct ip6_hdr *); 535 ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK; 536 ip6->ip6_vfc = IPV6_VERSION; 537 #if 0 /* ip6_plen will be filled in ip6_output. */ 538 ip6->ip6_plen = htons((u_short)plen); 539 #endif 540 ip6->ip6_nxt = IPPROTO_UDP; 541 ip6->ip6_hlim = in6p->in6p_ip6.ip6_hlim; /* XXX */ 542 ip6->ip6_src = in6p->in6p_laddr; 543 ip6->ip6_dst = in6p->in6p_faddr; 544 545 udp6 = (struct udphdr *)(ip6 + 1); 546 udp6->uh_sport = in6p->in6p_lport; 547 udp6->uh_dport = in6p->in6p_fport; 548 udp6->uh_ulen = htons((u_short)plen); 549 udp6->uh_sum = 0; 550 551 if ((udp6->uh_sum = in6_cksum(m, IPPROTO_UDP, 552 sizeof(struct ip6_hdr), plen)) == 0) { 553 udp6->uh_sum = 0xffff; 554 } 555 556 udp6stat.udp6s_opackets++; 557 558 #ifdef IPSEC 559 m->m_pkthdr.rcvif = (struct ifnet *)in6p->in6p_socket; 560 #endif /*IPSEC*/ 561 error = ip6_output(m, in6p->in6p_outputopts, &in6p->in6p_route, 562 0, in6p->in6p_moptions); 563 564 if (addr6) { 565 in6_pcbdisconnect(in6p); 566 in6p->in6p_laddr = laddr6; 567 splx(s); 568 } 569 goto releaseopt; 570 571 release: 572 m_freem(m); 573 574 releaseopt: 575 if (control) { 576 in6p->in6p_outputopts = stickyopt; 577 m_freem(control); 578 } 579 return(error); 580 } 581 582 extern int udp6_sendspace; 583 extern int udp6_recvspace; 584 585 int 586 udp6_usrreq(so, req, m, addr6, control, p) 587 struct socket *so; 588 int req; 589 struct mbuf *m, *addr6, *control; 590 struct proc *p; 591 { 592 struct in6pcb *in6p = sotoin6pcb(so); 593 int error = 0; 594 int s; 595 596 /* 597 * MAPPED_ADDR implementation info: 598 * Mapped addr support for PRU_CONTROL is not necessary. 599 * Because typical user of PRU_CONTROL is such as ifconfig, 600 * and they don't associate any addr to their socket. Then 601 * socket family is only hint about the PRU_CONTROL'ed address 602 * family, especially when getting addrs from kernel. 603 * So AF_INET socket need to be used to control AF_INET addrs, 604 * and AF_INET6 socket for AF_INET6 addrs. 605 */ 606 if (req == PRU_CONTROL) 607 return(in6_control(so, (u_long)m, (caddr_t)addr6, 608 (struct ifnet *)control, p)); 609 610 if (in6p == NULL && req != PRU_ATTACH) { 611 error = EINVAL; 612 goto release; 613 } 614 615 switch (req) { 616 case PRU_ATTACH: 617 /* 618 * MAPPED_ADDR implementation spec: 619 * Always attach for IPv6, 620 * and only when necessary for IPv4. 621 */ 622 if (in6p != NULL) { 623 error = EINVAL; 624 break; 625 } 626 s = splnet(); 627 error = in6_pcballoc(so, &udb6); 628 splx(s); 629 if (error) 630 break; 631 error = soreserve(so, udp6_sendspace, udp6_recvspace); 632 if (error) 633 break; 634 in6p = sotoin6pcb(so); 635 in6p->in6p_ip6.ip6_hlim = ip6_defhlim; 636 in6p->in6p_cksum = -1; /* just to be sure */ 637 #ifdef IPSEC 638 error = ipsec_init_policy(&in6p->in6p_sp); 639 #endif /*IPSEC*/ 640 break; 641 642 case PRU_DETACH: 643 udp6_detach(in6p); 644 break; 645 646 case PRU_BIND: 647 s = splnet(); 648 error = in6_pcbbind(in6p, addr6); 649 splx(s); 650 break; 651 652 case PRU_LISTEN: 653 error = EOPNOTSUPP; 654 break; 655 656 case PRU_CONNECT: 657 if (!IN6_IS_ADDR_ANY(&in6p->in6p_faddr)) { 658 error = EISCONN; 659 break; 660 } 661 s = splnet(); 662 error = in6_pcbconnect(in6p, addr6); 663 if (ip6_auto_flowlabel) { 664 in6p->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK; 665 in6p->in6p_flowinfo |= 666 (htonl(ip6_flow_seq++) & IPV6_FLOWLABEL_MASK); 667 } 668 splx(s); 669 if (error == 0) 670 soisconnected(so); 671 break; 672 673 case PRU_CONNECT2: 674 error = EOPNOTSUPP; 675 break; 676 677 case PRU_ACCEPT: 678 error = EOPNOTSUPP; 679 break; 680 681 case PRU_DISCONNECT: 682 if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { 683 error = ENOTCONN; 684 break; 685 } 686 s = splnet(); 687 in6_pcbdisconnect(in6p); 688 bzero((caddr_t)&in6p->in6p_laddr, sizeof(in6p->in6p_laddr)); 689 splx(s); 690 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 691 break; 692 693 case PRU_SHUTDOWN: 694 socantsendmore(so); 695 break; 696 697 case PRU_SEND: 698 return(udp6_output(in6p, m, addr6, control)); 699 700 case PRU_ABORT: 701 soisdisconnected(so); 702 udp6_detach(in6p); 703 break; 704 705 case PRU_SOCKADDR: 706 in6_setsockaddr(in6p, addr6); 707 break; 708 709 case PRU_PEERADDR: 710 in6_setpeeraddr(in6p, addr6); 711 break; 712 713 case PRU_SENSE: 714 /* 715 * stat: don't bother with a blocksize 716 */ 717 return(0); 718 719 case PRU_SENDOOB: 720 case PRU_FASTTIMO: 721 case PRU_SLOWTIMO: 722 case PRU_PROTORCV: 723 case PRU_PROTOSEND: 724 error = EOPNOTSUPP; 725 break; 726 727 case PRU_RCVD: 728 case PRU_RCVOOB: 729 return(EOPNOTSUPP); /* do not free mbuf's */ 730 731 default: 732 panic("udp6_usrreq"); 733 } 734 735 release: 736 if (control) { 737 printf("udp control data unexpectedly retained\n"); 738 m_freem(control); 739 } 740 if (m) 741 m_freem(m); 742 return(error); 743 } 744 745 static void 746 udp6_detach(in6p) 747 struct in6pcb *in6p; 748 { 749 int s = splnet(); 750 751 if (in6p == udp6_last_in6pcb) 752 udp6_last_in6pcb = &udb6; 753 in6_pcbdetach(in6p); 754 splx(s); 755 } 756 757 #ifdef __bsdi__ 758 int *udp6_sysvars[] = UDP6CTL_VARS; 759 760 int 761 udp6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) 762 int *name; 763 u_int namelen; 764 void *oldp; 765 size_t *oldlenp; 766 void *newp; 767 size_t newlen; 768 { 769 if (name[0] >= UDP6CTL_MAXID) 770 return (EOPNOTSUPP); 771 switch (name[0]) { 772 case UDP6CTL_STATS: 773 return sysctl_rdtrunc(oldp, oldlenp, newp, &udp6stat, 774 sizeof(udp6stat)); 775 776 default: 777 return (sysctl_int_arr(udp6_sysvars, name, namelen, 778 oldp, oldlenp, newp, newlen)); 779 } 780 } 781 #endif /*__bsdi__*/ 782 783 #ifdef __NetBSD__ 784 #include <vm/vm.h> 785 #include <sys/sysctl.h> 786 787 int 788 udp6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) 789 int *name; 790 u_int namelen; 791 void *oldp; 792 size_t *oldlenp; 793 void *newp; 794 size_t newlen; 795 { 796 /* All sysctl names at this level are terminal. */ 797 if (namelen != 1) 798 return ENOTDIR; 799 800 switch (name[0]) { 801 802 case UDP6CTL_SENDMAX: 803 return sysctl_int(oldp, oldlenp, newp, newlen, 804 &udp6_sendspace); 805 case UDP6CTL_RECVSPACE: 806 return sysctl_int(oldp, oldlenp, newp, newlen, 807 &udp6_recvspace); 808 default: 809 return ENOPROTOOPT; 810 } 811 /* NOTREACHED */ 812 } 813 #endif 814
Indexes created Tue Sep 23 02:09:52 GMT 2025