1 /* $NetBSD: udp6_usrreq.c,v 1.141 2018/04/28 13:26:57 maxv Exp $ */ 2 /* $KAME: udp6_usrreq.c,v 1.86 2001/05/27 17:33:00 itojun Exp $ */ 3 /* $KAME: udp6_output.c,v 1.43 2001/10/15 09:19:52 itojun Exp $ */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1982, 1986, 1989, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. 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/cdefs.h> 66 __KERNEL_RCSID(0, "$NetBSD: udp6_usrreq.c,v 1.141 2018/04/28 13:26:57 maxv Exp $"); 67 68 #ifdef _KERNEL_OPT 69 #include "opt_inet.h" 70 #include "opt_inet_csum.h" 71 #include "opt_ipsec.h" 72 #include "opt_net_mpsafe.h" 73 #endif 74 75 #include <sys/param.h> 76 #include <sys/mbuf.h> 77 #include <sys/protosw.h> 78 #include <sys/socket.h> 79 #include <sys/socketvar.h> 80 #include <sys/systm.h> 81 #include <sys/proc.h> 82 #include <sys/syslog.h> 83 #include <sys/domain.h> 84 #include <sys/sysctl.h> 85 86 #include <net/if.h> 87 #include <net/if_types.h> 88 89 #include <netinet/in.h> 90 #include <netinet/in_var.h> 91 #include <netinet/in_systm.h> 92 #include <netinet/in_offload.h> 93 #include <netinet/ip.h> 94 #include <netinet/ip_var.h> 95 #include <netinet/in_pcb.h> 96 #include <netinet/udp.h> 97 #include <netinet/udp_var.h> 98 #include <netinet/udp_private.h> 99 100 #include <netinet/ip6.h> 101 #include <netinet/icmp6.h> 102 #include <netinet6/ip6_var.h> 103 #include <netinet6/ip6_private.h> 104 #include <netinet6/in6_pcb.h> 105 #include <netinet6/udp6_var.h> 106 #include <netinet6/udp6_private.h> 107 #include <netinet6/ip6protosw.h> 108 #include <netinet6/scope6_var.h> 109 110 #ifdef IPSEC 111 #include <netipsec/ipsec.h> 112 #ifdef INET6 113 #include <netipsec/ipsec6.h> 114 #endif 115 #endif 116 117 #include "faith.h" 118 #if defined(NFAITH) && NFAITH > 0 119 #include <net/if_faith.h> 120 #endif 121 122 /* 123 * UDP protocol implementation. 124 * Per RFC 768, August, 1980. 125 */ 126 127 extern struct inpcbtable udbtable; 128 129 percpu_t *udp6stat_percpu; 130 131 /* UDP on IP6 parameters */ 132 static int udp6_sendspace = 9216; /* really max datagram size */ 133 static int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6)); 134 /* 40 1K datagrams */ 135 136 static void udp6_notify(struct in6pcb *, int); 137 static void sysctl_net_inet6_udp6_setup(struct sysctllog **); 138 139 #ifdef UDP_CSUM_COUNTERS 140 #include <sys/device.h> 141 struct evcnt udp6_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 142 NULL, "udp6", "hwcsum bad"); 143 struct evcnt udp6_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 144 NULL, "udp6", "hwcsum ok"); 145 struct evcnt udp6_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 146 NULL, "udp6", "hwcsum data"); 147 struct evcnt udp6_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 148 NULL, "udp6", "swcsum"); 149 150 EVCNT_ATTACH_STATIC(udp6_hwcsum_bad); 151 EVCNT_ATTACH_STATIC(udp6_hwcsum_ok); 152 EVCNT_ATTACH_STATIC(udp6_hwcsum_data); 153 EVCNT_ATTACH_STATIC(udp6_swcsum); 154 155 #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ 156 #else 157 #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */ 158 #endif 159 160 void 161 udp6_init(void) 162 { 163 sysctl_net_inet6_udp6_setup(NULL); 164 udp6stat_percpu = percpu_alloc(sizeof(uint64_t) * UDP6_NSTATS); 165 166 udp_init_common(); 167 } 168 169 /* 170 * Notify a udp user of an asynchronous error; 171 * just wake up so that he can collect error status. 172 */ 173 static void 174 udp6_notify(struct in6pcb *in6p, int errno) 175 { 176 in6p->in6p_socket->so_error = errno; 177 sorwakeup(in6p->in6p_socket); 178 sowwakeup(in6p->in6p_socket); 179 } 180 181 void * 182 udp6_ctlinput(int cmd, const struct sockaddr *sa, void *d) 183 { 184 struct udphdr uh; 185 struct ip6_hdr *ip6; 186 const struct sockaddr_in6 *sa6 = (const struct sockaddr_in6 *)sa; 187 struct mbuf *m; 188 int off; 189 void *cmdarg; 190 struct ip6ctlparam *ip6cp = NULL; 191 const struct sockaddr_in6 *sa6_src = NULL; 192 void (*notify)(struct in6pcb *, int) = udp6_notify; 193 struct udp_portonly { 194 u_int16_t uh_sport; 195 u_int16_t uh_dport; 196 } *uhp; 197 198 if (sa->sa_family != AF_INET6 || 199 sa->sa_len != sizeof(struct sockaddr_in6)) 200 return NULL; 201 202 if ((unsigned)cmd >= PRC_NCMDS) 203 return NULL; 204 if (PRC_IS_REDIRECT(cmd)) 205 notify = in6_rtchange, d = NULL; 206 else if (cmd == PRC_HOSTDEAD) 207 d = NULL; 208 else if (cmd == PRC_MSGSIZE) { 209 /* special code is present, see below */ 210 notify = in6_rtchange; 211 } 212 else if (inet6ctlerrmap[cmd] == 0) 213 return NULL; 214 215 /* if the parameter is from icmp6, decode it. */ 216 if (d != NULL) { 217 ip6cp = (struct ip6ctlparam *)d; 218 m = ip6cp->ip6c_m; 219 ip6 = ip6cp->ip6c_ip6; 220 off = ip6cp->ip6c_off; 221 cmdarg = ip6cp->ip6c_cmdarg; 222 sa6_src = ip6cp->ip6c_src; 223 } else { 224 m = NULL; 225 ip6 = NULL; 226 cmdarg = NULL; 227 sa6_src = &sa6_any; 228 off = 0; 229 } 230 231 if (ip6) { 232 /* check if we can safely examine src and dst ports */ 233 if (m->m_pkthdr.len < off + sizeof(*uhp)) { 234 if (cmd == PRC_MSGSIZE) 235 icmp6_mtudisc_update((struct ip6ctlparam *)d, 0); 236 return NULL; 237 } 238 239 memset(&uh, 0, sizeof(uh)); 240 m_copydata(m, off, sizeof(*uhp), (void *)&uh); 241 242 if (cmd == PRC_MSGSIZE) { 243 int valid = 0; 244 245 /* 246 * Check to see if we have a valid UDP socket 247 * corresponding to the address in the ICMPv6 message 248 * payload. 249 */ 250 if (in6_pcblookup_connect(&udbtable, &sa6->sin6_addr, 251 uh.uh_dport, (const struct in6_addr *)&sa6_src->sin6_addr, 252 uh.uh_sport, 0, 0)) 253 valid++; 254 #if 0 255 /* 256 * As the use of sendto(2) is fairly popular, 257 * we may want to allow non-connected pcb too. 258 * But it could be too weak against attacks... 259 * We should at least check if the local address (= s) 260 * is really ours. 261 */ 262 else if (in6_pcblookup_bind(&udbtable, &sa6->sin6_addr, 263 uh.uh_dport, 0)) 264 valid++; 265 #endif 266 267 /* 268 * Depending on the value of "valid" and routing table 269 * size (mtudisc_{hi,lo}wat), we will: 270 * - recalculate the new MTU and create the 271 * corresponding routing entry, or 272 * - ignore the MTU change notification. 273 */ 274 icmp6_mtudisc_update((struct ip6ctlparam *)d, valid); 275 276 /* 277 * regardless of if we called 278 * icmp6_mtudisc_update(), we need to call 279 * in6_pcbnotify(), to notify path MTU change 280 * to the userland (RFC3542), because some 281 * unconnected sockets may share the same 282 * destination and want to know the path MTU. 283 */ 284 } 285 286 (void)in6_pcbnotify(&udbtable, sa, uh.uh_dport, 287 sin6tocsa(sa6_src), uh.uh_sport, cmd, cmdarg, 288 notify); 289 } else { 290 (void)in6_pcbnotify(&udbtable, sa, 0, 291 sin6tocsa(sa6_src), 0, cmd, cmdarg, notify); 292 } 293 return NULL; 294 } 295 296 int 297 udp6_ctloutput(int op, struct socket *so, struct sockopt *sopt) 298 { 299 int s; 300 int error = 0; 301 int family; 302 303 family = so->so_proto->pr_domain->dom_family; 304 305 s = splsoftnet(); 306 switch (family) { 307 #ifdef INET 308 case PF_INET: 309 if (sopt->sopt_level != IPPROTO_UDP) { 310 error = ip_ctloutput(op, so, sopt); 311 goto end; 312 } 313 break; 314 #endif 315 #ifdef INET6 316 case PF_INET6: 317 if (sopt->sopt_level != IPPROTO_UDP) { 318 error = ip6_ctloutput(op, so, sopt); 319 goto end; 320 } 321 break; 322 #endif 323 default: 324 error = EAFNOSUPPORT; 325 goto end; 326 } 327 error = EINVAL; 328 329 end: 330 splx(s); 331 return error; 332 } 333 334 static void 335 udp6_sendup(struct mbuf *m, int off /* offset of data portion */, 336 struct sockaddr *src, struct socket *so) 337 { 338 struct mbuf *opts = NULL; 339 struct mbuf *n; 340 struct in6pcb *in6p; 341 342 KASSERT(so != NULL); 343 KASSERT(so->so_proto->pr_domain->dom_family == AF_INET6); 344 in6p = sotoin6pcb(so); 345 KASSERT(in6p != NULL); 346 347 #if defined(IPSEC) 348 if (ipsec_used && ipsec_in_reject(m, in6p)) { 349 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) 350 icmp6_error(n, ICMP6_DST_UNREACH, 351 ICMP6_DST_UNREACH_ADMIN, 0); 352 return; 353 } 354 #endif 355 356 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { 357 if (in6p->in6p_flags & IN6P_CONTROLOPTS || 358 SOOPT_TIMESTAMP(in6p->in6p_socket->so_options)) { 359 struct ip6_hdr *ip6 = mtod(n, struct ip6_hdr *); 360 ip6_savecontrol(in6p, &opts, ip6, n); 361 } 362 363 m_adj(n, off); 364 if (sbappendaddr(&so->so_rcv, src, n, opts) == 0) { 365 m_freem(n); 366 if (opts) 367 m_freem(opts); 368 UDP6_STATINC(UDP6_STAT_FULLSOCK); 369 soroverflow(so); 370 } else 371 sorwakeup(so); 372 } 373 } 374 375 int 376 udp6_realinput(int af, struct sockaddr_in6 *src, struct sockaddr_in6 *dst, 377 struct mbuf *m, int off) 378 { 379 u_int16_t sport, dport; 380 int rcvcnt; 381 struct in6_addr src6, *dst6; 382 const struct in_addr *dst4; 383 struct inpcb_hdr *inph; 384 struct in6pcb *in6p; 385 386 rcvcnt = 0; 387 off += sizeof(struct udphdr); /* now, offset of payload */ 388 389 if (af != AF_INET && af != AF_INET6) 390 goto bad; 391 if (src->sin6_family != AF_INET6 || dst->sin6_family != AF_INET6) 392 goto bad; 393 394 src6 = src->sin6_addr; 395 if (sa6_recoverscope(src) != 0) { 396 /* XXX: should be impossible. */ 397 goto bad; 398 } 399 sport = src->sin6_port; 400 401 dport = dst->sin6_port; 402 dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr[12]; 403 dst6 = &dst->sin6_addr; 404 405 if (IN6_IS_ADDR_MULTICAST(dst6) || 406 (af == AF_INET && IN_MULTICAST(dst4->s_addr))) { 407 /* 408 * Deliver a multicast or broadcast datagram to *all* sockets 409 * for which the local and remote addresses and ports match 410 * those of the incoming datagram. This allows more than 411 * one process to receive multi/broadcasts on the same port. 412 * (This really ought to be done for unicast datagrams as 413 * well, but that would cause problems with existing 414 * applications that open both address-specific sockets and 415 * a wildcard socket listening to the same port -- they would 416 * end up receiving duplicates of every unicast datagram. 417 * Those applications open the multiple sockets to overcome an 418 * inadequacy of the UDP socket interface, but for backwards 419 * compatibility we avoid the problem here rather than 420 * fixing the interface. Maybe 4.5BSD will remedy this?) 421 */ 422 423 /* 424 * KAME note: traditionally we dropped udpiphdr from mbuf here. 425 * we need udpiphdr for IPsec processing so we do that later. 426 */ 427 /* 428 * Locate pcb(s) for datagram. 429 */ 430 TAILQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) { 431 in6p = (struct in6pcb *)inph; 432 if (in6p->in6p_af != AF_INET6) 433 continue; 434 435 if (in6p->in6p_lport != dport) 436 continue; 437 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) { 438 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, 439 dst6)) 440 continue; 441 } else { 442 if (IN6_IS_ADDR_V4MAPPED(dst6) && 443 (in6p->in6p_flags & IN6P_IPV6_V6ONLY)) 444 continue; 445 } 446 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { 447 if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, 448 &src6) || in6p->in6p_fport != sport) 449 continue; 450 } else { 451 if (IN6_IS_ADDR_V4MAPPED(&src6) && 452 (in6p->in6p_flags & IN6P_IPV6_V6ONLY)) 453 continue; 454 } 455 456 udp6_sendup(m, off, sin6tosa(src), in6p->in6p_socket); 457 rcvcnt++; 458 459 /* 460 * Don't look for additional matches if this one does 461 * not have either the SO_REUSEPORT or SO_REUSEADDR 462 * socket options set. This heuristic avoids searching 463 * through all pcbs in the common case of a non-shared 464 * port. It assumes that an application will never 465 * clear these options after setting them. 466 */ 467 if ((in6p->in6p_socket->so_options & 468 (SO_REUSEPORT|SO_REUSEADDR)) == 0) 469 break; 470 } 471 } else { 472 /* 473 * Locate pcb for datagram. 474 */ 475 in6p = in6_pcblookup_connect(&udbtable, &src6, sport, dst6, 476 dport, 0, 0); 477 if (in6p == 0) { 478 UDP_STATINC(UDP_STAT_PCBHASHMISS); 479 in6p = in6_pcblookup_bind(&udbtable, dst6, dport, 0); 480 if (in6p == 0) 481 return rcvcnt; 482 } 483 484 udp6_sendup(m, off, sin6tosa(src), in6p->in6p_socket); 485 rcvcnt++; 486 } 487 488 bad: 489 return rcvcnt; 490 } 491 492 int 493 udp6_input_checksum(struct mbuf *m, const struct udphdr *uh, int off, int len) 494 { 495 496 /* 497 * XXX it's better to record and check if this mbuf is 498 * already checked. 499 */ 500 501 if (__predict_false((m->m_flags & M_LOOP) && !udp_do_loopback_cksum)) { 502 goto good; 503 } 504 if (uh->uh_sum == 0) { 505 UDP6_STATINC(UDP6_STAT_NOSUM); 506 goto bad; 507 } 508 509 switch (m->m_pkthdr.csum_flags & 510 ((m_get_rcvif_NOMPSAFE(m)->if_csum_flags_rx & M_CSUM_UDPv6) | 511 M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { 512 case M_CSUM_UDPv6|M_CSUM_TCP_UDP_BAD: 513 UDP_CSUM_COUNTER_INCR(&udp6_hwcsum_bad); 514 UDP6_STATINC(UDP6_STAT_BADSUM); 515 goto bad; 516 517 #if 0 /* notyet */ 518 case M_CSUM_UDPv6|M_CSUM_DATA: 519 #endif 520 521 case M_CSUM_UDPv6: 522 /* Checksum was okay. */ 523 UDP_CSUM_COUNTER_INCR(&udp6_hwcsum_ok); 524 break; 525 526 default: 527 /* 528 * Need to compute it ourselves. Maybe skip checksum 529 * on loopback interfaces. 530 */ 531 UDP_CSUM_COUNTER_INCR(&udp6_swcsum); 532 if (in6_cksum(m, IPPROTO_UDP, off, len) != 0) { 533 UDP6_STATINC(UDP6_STAT_BADSUM); 534 goto bad; 535 } 536 } 537 538 good: 539 return 0; 540 bad: 541 return -1; 542 } 543 544 int 545 udp6_input(struct mbuf **mp, int *offp, int proto) 546 { 547 struct mbuf *m = *mp; 548 int off = *offp; 549 struct sockaddr_in6 src, dst; 550 struct ip6_hdr *ip6; 551 struct udphdr *uh; 552 u_int32_t plen, ulen; 553 554 ip6 = mtod(m, struct ip6_hdr *); 555 556 #if defined(NFAITH) && 0 < NFAITH 557 if (faithprefix(&ip6->ip6_dst)) { 558 /* send icmp6 host unreach? */ 559 m_freem(m); 560 return IPPROTO_DONE; 561 } 562 #endif 563 564 UDP6_STATINC(UDP6_STAT_IPACKETS); 565 566 /* Check for jumbogram is done in ip6_input. We can trust pkthdr.len. */ 567 plen = m->m_pkthdr.len - off; 568 IP6_EXTHDR_GET(uh, struct udphdr *, m, off, sizeof(struct udphdr)); 569 if (uh == NULL) { 570 IP6_STATINC(IP6_STAT_TOOSHORT); 571 return IPPROTO_DONE; 572 } 573 574 /* 575 * Enforce alignment requirements that are violated in 576 * some cases, see kern/50766 for details. 577 */ 578 if (UDP_HDR_ALIGNED_P(uh) == 0) { 579 m = m_copyup(m, off + sizeof(struct udphdr), 0); 580 if (m == NULL) { 581 IP6_STATINC(IP6_STAT_TOOSHORT); 582 return IPPROTO_DONE; 583 } 584 ip6 = mtod(m, struct ip6_hdr *); 585 uh = (struct udphdr *)(mtod(m, char *) + off); 586 } 587 KASSERT(UDP_HDR_ALIGNED_P(uh)); 588 ulen = ntohs((u_short)uh->uh_ulen); 589 590 /* 591 * RFC2675 section 4: jumbograms will have 0 in the UDP header field, 592 * iff payload length > 0xffff. 593 */ 594 if (ulen == 0 && plen > 0xffff) 595 ulen = plen; 596 597 if (plen != ulen) { 598 UDP6_STATINC(UDP6_STAT_BADLEN); 599 goto bad; 600 } 601 602 /* destination port of 0 is illegal, based on RFC768. */ 603 if (uh->uh_dport == 0) 604 goto bad; 605 606 /* 607 * Checksum extended UDP header and data. Maybe skip checksum 608 * on loopback interfaces. 609 */ 610 if (udp6_input_checksum(m, uh, off, ulen)) 611 goto bad; 612 613 /* 614 * Construct source and dst sockaddrs. 615 */ 616 memset(&src, 0, sizeof(src)); 617 src.sin6_family = AF_INET6; 618 src.sin6_len = sizeof(struct sockaddr_in6); 619 src.sin6_addr = ip6->ip6_src; 620 src.sin6_port = uh->uh_sport; 621 memset(&dst, 0, sizeof(dst)); 622 dst.sin6_family = AF_INET6; 623 dst.sin6_len = sizeof(struct sockaddr_in6); 624 dst.sin6_addr = ip6->ip6_dst; 625 dst.sin6_port = uh->uh_dport; 626 627 if (udp6_realinput(AF_INET6, &src, &dst, m, off) == 0) { 628 if (m->m_flags & M_MCAST) { 629 UDP6_STATINC(UDP6_STAT_NOPORTMCAST); 630 goto bad; 631 } 632 UDP6_STATINC(UDP6_STAT_NOPORT); 633 icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0); 634 m = NULL; 635 } 636 637 bad: 638 if (m) 639 m_freem(m); 640 return IPPROTO_DONE; 641 } 642 643 int 644 udp6_output(struct in6pcb * const in6p, struct mbuf *m, 645 struct sockaddr_in6 * const addr6, struct mbuf * const control, 646 struct lwp * const l) 647 { 648 u_int32_t ulen = m->m_pkthdr.len; 649 u_int32_t plen = sizeof(struct udphdr) + ulen; 650 struct ip6_hdr *ip6; 651 struct udphdr *udp6; 652 struct in6_addr _laddr, *laddr, *faddr; 653 struct in6_addr laddr_mapped; /* XXX ugly */ 654 struct sockaddr_in6 *sin6 = NULL; 655 struct ifnet *oifp = NULL; 656 int scope_ambiguous = 0; 657 u_int16_t fport; 658 int error = 0; 659 struct ip6_pktopts *optp = NULL; 660 struct ip6_pktopts opt; 661 int af = AF_INET6, hlen = sizeof(struct ip6_hdr); 662 #ifdef INET 663 struct ip *ip; 664 struct udpiphdr *ui; 665 int flags = 0; 666 #endif 667 struct sockaddr_in6 tmp; 668 669 if (addr6) { 670 sin6 = addr6; 671 if (sin6->sin6_family != AF_INET6) { 672 error = EAFNOSUPPORT; 673 goto release; 674 } 675 676 /* protect *sin6 from overwrites */ 677 tmp = *sin6; 678 sin6 = &tmp; 679 680 /* 681 * Application should provide a proper zone ID or the use of 682 * default zone IDs should be enabled. Unfortunately, some 683 * applications do not behave as it should, so we need a 684 * workaround. Even if an appropriate ID is not determined, 685 * we'll see if we can determine the outgoing interface. If we 686 * can, determine the zone ID based on the interface below. 687 */ 688 if (sin6->sin6_scope_id == 0 && !ip6_use_defzone) 689 scope_ambiguous = 1; 690 if ((error = sa6_embedscope(sin6, ip6_use_defzone)) != 0) 691 goto release; 692 } 693 694 if (control) { 695 if (__predict_false(l == NULL)) { 696 panic("%s: control but no lwp", __func__); 697 } 698 if ((error = ip6_setpktopts(control, &opt, 699 in6p->in6p_outputopts, l->l_cred, IPPROTO_UDP)) != 0) 700 goto release; 701 optp = &opt; 702 } else 703 optp = in6p->in6p_outputopts; 704 705 706 if (sin6) { 707 /* 708 * Slightly different than v4 version in that we call 709 * in6_selectsrc and in6_pcbsetport to fill in the local 710 * address and port rather than in_pcbconnect. in_pcbconnect 711 * sets in6p_faddr which causes EISCONN below to be hit on 712 * subsequent sendto. 713 */ 714 if (sin6->sin6_port == 0) { 715 error = EADDRNOTAVAIL; 716 goto release; 717 } 718 719 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { 720 /* how about ::ffff:0.0.0.0 case? */ 721 error = EISCONN; 722 goto release; 723 } 724 725 faddr = &sin6->sin6_addr; 726 fport = sin6->sin6_port; /* allow 0 port */ 727 728 if (IN6_IS_ADDR_V4MAPPED(faddr)) { 729 if ((in6p->in6p_flags & IN6P_IPV6_V6ONLY)) { 730 /* 731 * I believe we should explicitly discard the 732 * packet when mapped addresses are disabled, 733 * rather than send the packet as an IPv6 one. 734 * If we chose the latter approach, the packet 735 * might be sent out on the wire based on the 736 * default route, the situation which we'd 737 * probably want to avoid. 738 * (20010421 jinmei@kame.net) 739 */ 740 error = EINVAL; 741 goto release; 742 } 743 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) && 744 !IN6_IS_ADDR_V4MAPPED(&in6p->in6p_laddr)) { 745 /* 746 * when remote addr is an IPv4-mapped address, 747 * local addr should not be an IPv6 address, 748 * since you cannot determine how to map IPv6 749 * source address to IPv4. 750 */ 751 error = EINVAL; 752 goto release; 753 } 754 755 af = AF_INET; 756 } 757 758 if (!IN6_IS_ADDR_V4MAPPED(faddr)) { 759 struct psref psref; 760 int bound = curlwp_bind(); 761 762 error = in6_selectsrc(sin6, optp, 763 in6p->in6p_moptions, 764 &in6p->in6p_route, 765 &in6p->in6p_laddr, &oifp, &psref, &_laddr); 766 /* XXX need error check? */ 767 if (oifp && scope_ambiguous && 768 (error = in6_setscope(&sin6->sin6_addr, 769 oifp, NULL))) { 770 if_put(oifp, &psref); 771 curlwp_bindx(bound); 772 goto release; 773 } 774 if_put(oifp, &psref); 775 curlwp_bindx(bound); 776 laddr = &_laddr; 777 } else { 778 /* 779 * XXX: freebsd[34] does not have in_selectsrc, but 780 * we can omit the whole part because freebsd4 calls 781 * udp_output() directly in this case, and thus we'll 782 * never see this path. 783 */ 784 if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) { 785 struct sockaddr_in sin_dst; 786 struct in_addr ina; 787 struct in_ifaddr *ia4; 788 struct psref _psref; 789 int bound; 790 791 memcpy(&ina, &faddr->s6_addr[12], sizeof(ina)); 792 sockaddr_in_init(&sin_dst, &ina, 0); 793 bound = curlwp_bind(); 794 ia4 = in_selectsrc(&sin_dst, &in6p->in6p_route, 795 in6p->in6p_socket->so_options, NULL, 796 &error, &_psref); 797 if (ia4 == NULL) { 798 curlwp_bindx(bound); 799 if (error == 0) 800 error = EADDRNOTAVAIL; 801 goto release; 802 } 803 memset(&laddr_mapped, 0, sizeof(laddr_mapped)); 804 laddr_mapped.s6_addr16[5] = 0xffff; /* ugly */ 805 memcpy(&laddr_mapped.s6_addr[12], 806 &IA_SIN(ia4)->sin_addr, 807 sizeof(IA_SIN(ia4)->sin_addr)); 808 ia4_release(ia4, &_psref); 809 curlwp_bindx(bound); 810 laddr = &laddr_mapped; 811 } else 812 { 813 laddr = &in6p->in6p_laddr; /* XXX */ 814 } 815 } 816 if (laddr == NULL) { 817 if (error == 0) 818 error = EADDRNOTAVAIL; 819 goto release; 820 } 821 if (in6p->in6p_lport == 0) { 822 /* 823 * Craft a sockaddr_in6 for the local endpoint. Use the 824 * "any" as a base, set the address, and recover the 825 * scope. 826 */ 827 struct sockaddr_in6 lsin6 = 828 *((const struct sockaddr_in6 *)in6p->in6p_socket->so_proto->pr_domain->dom_sa_any); 829 lsin6.sin6_addr = *laddr; 830 error = sa6_recoverscope(&lsin6); 831 if (error) 832 goto release; 833 834 error = in6_pcbsetport(&lsin6, in6p, l); 835 836 if (error) { 837 in6p->in6p_laddr = in6addr_any; 838 goto release; 839 } 840 } 841 } else { 842 if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) { 843 error = ENOTCONN; 844 goto release; 845 } 846 if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_faddr)) { 847 if ((in6p->in6p_flags & IN6P_IPV6_V6ONLY)) 848 { 849 /* 850 * XXX: this case would happen when the 851 * application sets the V6ONLY flag after 852 * connecting the foreign address. 853 * Such applications should be fixed, 854 * so we bark here. 855 */ 856 log(LOG_INFO, "udp6_output: IPV6_V6ONLY " 857 "option was set for a connected socket\n"); 858 error = EINVAL; 859 goto release; 860 } else 861 af = AF_INET; 862 } 863 laddr = &in6p->in6p_laddr; 864 faddr = &in6p->in6p_faddr; 865 fport = in6p->in6p_fport; 866 } 867 868 if (af == AF_INET) 869 hlen = sizeof(struct ip); 870 871 /* 872 * Calculate data length and get a mbuf 873 * for UDP and IP6 headers. 874 */ 875 M_PREPEND(m, hlen + sizeof(struct udphdr), M_DONTWAIT); 876 if (m == NULL) { 877 error = ENOBUFS; 878 goto release; 879 } 880 881 /* 882 * Stuff checksum and output datagram. 883 */ 884 udp6 = (struct udphdr *)(mtod(m, char *) + hlen); 885 udp6->uh_sport = in6p->in6p_lport; /* lport is always set in the PCB */ 886 udp6->uh_dport = fport; 887 if (plen <= 0xffff) 888 udp6->uh_ulen = htons((u_int16_t)plen); 889 else 890 udp6->uh_ulen = 0; 891 udp6->uh_sum = 0; 892 893 switch (af) { 894 case AF_INET6: 895 ip6 = mtod(m, struct ip6_hdr *); 896 ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK; 897 ip6->ip6_vfc &= ~IPV6_VERSION_MASK; 898 ip6->ip6_vfc |= IPV6_VERSION; 899 #if 0 /* ip6_plen will be filled in ip6_output. */ 900 ip6->ip6_plen = htons((u_int16_t)plen); 901 #endif 902 ip6->ip6_nxt = IPPROTO_UDP; 903 ip6->ip6_hlim = in6_selecthlim_rt(in6p); 904 ip6->ip6_src = *laddr; 905 ip6->ip6_dst = *faddr; 906 907 udp6->uh_sum = in6_cksum_phdr(laddr, faddr, 908 htonl(plen), htonl(IPPROTO_UDP)); 909 m->m_pkthdr.csum_flags = M_CSUM_UDPv6; 910 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); 911 912 UDP6_STATINC(UDP6_STAT_OPACKETS); 913 error = ip6_output(m, optp, &in6p->in6p_route, 0, 914 in6p->in6p_moptions, in6p, NULL); 915 break; 916 case AF_INET: 917 #ifdef INET 918 /* can't transmit jumbogram over IPv4 */ 919 if (plen > 0xffff) { 920 error = EMSGSIZE; 921 goto release; 922 } 923 924 ip = mtod(m, struct ip *); 925 ui = (struct udpiphdr *)ip; 926 memset(ui->ui_x1, 0, sizeof(ui->ui_x1)); 927 ui->ui_pr = IPPROTO_UDP; 928 ui->ui_len = htons(plen); 929 memcpy(&ui->ui_src, &laddr->s6_addr[12], sizeof(ui->ui_src)); 930 ui->ui_ulen = ui->ui_len; 931 932 flags = (in6p->in6p_socket->so_options & 933 (SO_DONTROUTE | SO_BROADCAST)); 934 memcpy(&ui->ui_dst, &faddr->s6_addr[12], sizeof(ui->ui_dst)); 935 936 udp6->uh_sum = in_cksum(m, hlen + plen); 937 if (udp6->uh_sum == 0) 938 udp6->uh_sum = 0xffff; 939 940 ip->ip_len = htons(hlen + plen); 941 ip->ip_ttl = in6_selecthlim(in6p, NULL); /* XXX */ 942 ip->ip_tos = 0; /* XXX */ 943 944 UDP_STATINC(UDP_STAT_OPACKETS); 945 error = ip_output(m, NULL, &in6p->in6p_route, flags /* XXX */, 946 in6p->in6p_v4moptions, NULL); 947 break; 948 #else 949 error = EAFNOSUPPORT; 950 goto release; 951 #endif 952 } 953 goto releaseopt; 954 955 release: 956 m_freem(m); 957 958 releaseopt: 959 if (control) { 960 if (optp == &opt) 961 ip6_clearpktopts(&opt, -1); 962 m_freem(control); 963 } 964 return (error); 965 } 966 967 static int 968 udp6_attach(struct socket *so, int proto) 969 { 970 struct in6pcb *in6p; 971 int s, error; 972 973 KASSERT(sotoin6pcb(so) == NULL); 974 sosetlock(so); 975 976 /* 977 * MAPPED_ADDR implementation spec: 978 * Always attach for IPv6, and only when necessary for IPv4. 979 */ 980 s = splsoftnet(); 981 error = in6_pcballoc(so, &udbtable); 982 splx(s); 983 if (error) { 984 return error; 985 } 986 error = soreserve(so, udp6_sendspace, udp6_recvspace); 987 if (error) { 988 return error; 989 } 990 in6p = sotoin6pcb(so); 991 in6p->in6p_cksum = -1; /* just to be sure */ 992 993 KASSERT(solocked(so)); 994 return 0; 995 } 996 997 static void 998 udp6_detach(struct socket *so) 999 { 1000 struct in6pcb *in6p = sotoin6pcb(so); 1001 int s; 1002 1003 KASSERT(solocked(so)); 1004 KASSERT(in6p != NULL); 1005 1006 s = splsoftnet(); 1007 in6_pcbdetach(in6p); 1008 splx(s); 1009 } 1010 1011 static int 1012 udp6_accept(struct socket *so, struct sockaddr *nam) 1013 { 1014 KASSERT(solocked(so)); 1015 1016 return EOPNOTSUPP; 1017 } 1018 1019 static int 1020 udp6_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 1021 { 1022 struct in6pcb *in6p = sotoin6pcb(so); 1023 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1024 int error = 0; 1025 int s; 1026 1027 KASSERT(solocked(so)); 1028 KASSERT(in6p != NULL); 1029 1030 s = splsoftnet(); 1031 error = in6_pcbbind(in6p, sin6, l); 1032 splx(s); 1033 return error; 1034 } 1035 1036 static int 1037 udp6_listen(struct socket *so, struct lwp *l) 1038 { 1039 KASSERT(solocked(so)); 1040 1041 return EOPNOTSUPP; 1042 } 1043 1044 static int 1045 udp6_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 1046 { 1047 struct in6pcb *in6p = sotoin6pcb(so); 1048 int error = 0; 1049 int s; 1050 1051 KASSERT(solocked(so)); 1052 KASSERT(in6p != NULL); 1053 1054 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) 1055 return EISCONN; 1056 s = splsoftnet(); 1057 error = in6_pcbconnect(in6p, (struct sockaddr_in6 *)nam, l); 1058 splx(s); 1059 if (error == 0) 1060 soisconnected(so); 1061 1062 return error; 1063 } 1064 1065 static int 1066 udp6_connect2(struct socket *so, struct socket *so2) 1067 { 1068 KASSERT(solocked(so)); 1069 1070 return EOPNOTSUPP; 1071 } 1072 1073 static int 1074 udp6_disconnect(struct socket *so) 1075 { 1076 struct in6pcb *in6p = sotoin6pcb(so); 1077 int s; 1078 1079 KASSERT(solocked(so)); 1080 KASSERT(in6p != NULL); 1081 1082 if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) 1083 return ENOTCONN; 1084 1085 s = splsoftnet(); 1086 in6_pcbdisconnect(in6p); 1087 memset((void *)&in6p->in6p_laddr, 0, sizeof(in6p->in6p_laddr)); 1088 splx(s); 1089 1090 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 1091 in6_pcbstate(in6p, IN6P_BOUND); /* XXX */ 1092 return 0; 1093 } 1094 1095 static int 1096 udp6_shutdown(struct socket *so) 1097 { 1098 int s; 1099 1100 s = splsoftnet(); 1101 socantsendmore(so); 1102 splx(s); 1103 1104 return 0; 1105 } 1106 1107 static int 1108 udp6_abort(struct socket *so) 1109 { 1110 int s; 1111 1112 KASSERT(solocked(so)); 1113 KASSERT(sotoin6pcb(so) != NULL); 1114 1115 s = splsoftnet(); 1116 soisdisconnected(so); 1117 in6_pcbdetach(sotoin6pcb(so)); 1118 splx(s); 1119 1120 return 0; 1121 } 1122 1123 static int 1124 udp6_ioctl(struct socket *so, u_long cmd, void *addr6, struct ifnet *ifp) 1125 { 1126 /* 1127 * MAPPED_ADDR implementation info: 1128 * Mapped addr support for PRU_CONTROL is not necessary. 1129 * Because typical user of PRU_CONTROL is such as ifconfig, 1130 * and they don't associate any addr to their socket. Then 1131 * socket family is only hint about the PRU_CONTROL'ed address 1132 * family, especially when getting addrs from kernel. 1133 * So AF_INET socket need to be used to control AF_INET addrs, 1134 * and AF_INET6 socket for AF_INET6 addrs. 1135 */ 1136 return in6_control(so, cmd, addr6, ifp); 1137 } 1138 1139 static int 1140 udp6_stat(struct socket *so, struct stat *ub) 1141 { 1142 KASSERT(solocked(so)); 1143 1144 /* stat: don't bother with a blocksize */ 1145 return 0; 1146 } 1147 1148 static int 1149 udp6_peeraddr(struct socket *so, struct sockaddr *nam) 1150 { 1151 KASSERT(solocked(so)); 1152 KASSERT(sotoin6pcb(so) != NULL); 1153 KASSERT(nam != NULL); 1154 1155 in6_setpeeraddr(sotoin6pcb(so), (struct sockaddr_in6 *)nam); 1156 return 0; 1157 } 1158 1159 static int 1160 udp6_sockaddr(struct socket *so, struct sockaddr *nam) 1161 { 1162 KASSERT(solocked(so)); 1163 KASSERT(sotoin6pcb(so) != NULL); 1164 KASSERT(nam != NULL); 1165 1166 in6_setsockaddr(sotoin6pcb(so), (struct sockaddr_in6 *)nam); 1167 return 0; 1168 } 1169 1170 static int 1171 udp6_rcvd(struct socket *so, int flags, struct lwp *l) 1172 { 1173 KASSERT(solocked(so)); 1174 1175 return EOPNOTSUPP; 1176 } 1177 1178 static int 1179 udp6_recvoob(struct socket *so, struct mbuf *m, int flags) 1180 { 1181 KASSERT(solocked(so)); 1182 1183 return EOPNOTSUPP; 1184 } 1185 1186 static int 1187 udp6_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 1188 struct mbuf *control, struct lwp *l) 1189 { 1190 struct in6pcb *in6p = sotoin6pcb(so); 1191 int error = 0; 1192 int s; 1193 1194 KASSERT(solocked(so)); 1195 KASSERT(in6p != NULL); 1196 KASSERT(m != NULL); 1197 1198 s = splsoftnet(); 1199 error = udp6_output(in6p, m, (struct sockaddr_in6 *)nam, control, l); 1200 splx(s); 1201 1202 return error; 1203 } 1204 1205 static int 1206 udp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 1207 { 1208 KASSERT(solocked(so)); 1209 1210 if (m) 1211 m_freem(m); 1212 if (control) 1213 m_freem(control); 1214 1215 return EOPNOTSUPP; 1216 } 1217 1218 static int 1219 udp6_purgeif(struct socket *so, struct ifnet *ifp) 1220 { 1221 1222 mutex_enter(softnet_lock); 1223 in6_pcbpurgeif0(&udbtable, ifp); 1224 #ifdef NET_MPSAFE 1225 mutex_exit(softnet_lock); 1226 #endif 1227 in6_purgeif(ifp); 1228 #ifdef NET_MPSAFE 1229 mutex_enter(softnet_lock); 1230 #endif 1231 in6_pcbpurgeif(&udbtable, ifp); 1232 mutex_exit(softnet_lock); 1233 1234 return 0; 1235 } 1236 1237 static int 1238 sysctl_net_inet6_udp6_stats(SYSCTLFN_ARGS) 1239 { 1240 1241 return (NETSTAT_SYSCTL(udp6stat_percpu, UDP6_NSTATS)); 1242 } 1243 1244 static void 1245 sysctl_net_inet6_udp6_setup(struct sysctllog **clog) 1246 { 1247 1248 sysctl_createv(clog, 0, NULL, NULL, 1249 CTLFLAG_PERMANENT, 1250 CTLTYPE_NODE, "inet6", NULL, 1251 NULL, 0, NULL, 0, 1252 CTL_NET, PF_INET6, CTL_EOL); 1253 sysctl_createv(clog, 0, NULL, NULL, 1254 CTLFLAG_PERMANENT, 1255 CTLTYPE_NODE, "udp6", 1256 SYSCTL_DESCR("UDPv6 related settings"), 1257 NULL, 0, NULL, 0, 1258 CTL_NET, PF_INET6, IPPROTO_UDP, CTL_EOL); 1259 1260 sysctl_createv(clog, 0, NULL, NULL, 1261 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1262 CTLTYPE_INT, "sendspace", 1263 SYSCTL_DESCR("Default UDP send buffer size"), 1264 NULL, 0, &udp6_sendspace, 0, 1265 CTL_NET, PF_INET6, IPPROTO_UDP, UDP6CTL_SENDSPACE, 1266 CTL_EOL); 1267 sysctl_createv(clog, 0, NULL, NULL, 1268 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1269 CTLTYPE_INT, "recvspace", 1270 SYSCTL_DESCR("Default UDP receive buffer size"), 1271 NULL, 0, &udp6_recvspace, 0, 1272 CTL_NET, PF_INET6, IPPROTO_UDP, UDP6CTL_RECVSPACE, 1273 CTL_EOL); 1274 sysctl_createv(clog, 0, NULL, NULL, 1275 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1276 CTLTYPE_INT, "do_loopback_cksum", 1277 SYSCTL_DESCR("Perform UDP checksum on loopback"), 1278 NULL, 0, &udp_do_loopback_cksum, 0, 1279 CTL_NET, PF_INET6, IPPROTO_UDP, UDP6CTL_LOOPBACKCKSUM, 1280 CTL_EOL); 1281 sysctl_createv(clog, 0, NULL, NULL, 1282 CTLFLAG_PERMANENT, 1283 CTLTYPE_STRUCT, "pcblist", 1284 SYSCTL_DESCR("UDP protocol control block list"), 1285 sysctl_inpcblist, 0, &udbtable, 0, 1286 CTL_NET, PF_INET6, IPPROTO_UDP, CTL_CREATE, 1287 CTL_EOL); 1288 sysctl_createv(clog, 0, NULL, NULL, 1289 CTLFLAG_PERMANENT, 1290 CTLTYPE_STRUCT, "stats", 1291 SYSCTL_DESCR("UDPv6 statistics"), 1292 sysctl_net_inet6_udp6_stats, 0, NULL, 0, 1293 CTL_NET, PF_INET6, IPPROTO_UDP, UDP6CTL_STATS, 1294 CTL_EOL); 1295 } 1296 1297 void 1298 udp6_statinc(u_int stat) 1299 { 1300 1301 KASSERT(stat < UDP6_NSTATS); 1302 UDP6_STATINC(stat); 1303 } 1304 1305 PR_WRAP_USRREQS(udp6) 1306 #define udp6_attach udp6_attach_wrapper 1307 #define udp6_detach udp6_detach_wrapper 1308 #define udp6_accept udp6_accept_wrapper 1309 #define udp6_bind udp6_bind_wrapper 1310 #define udp6_listen udp6_listen_wrapper 1311 #define udp6_connect udp6_connect_wrapper 1312 #define udp6_connect2 udp6_connect2_wrapper 1313 #define udp6_disconnect udp6_disconnect_wrapper 1314 #define udp6_shutdown udp6_shutdown_wrapper 1315 #define udp6_abort udp6_abort_wrapper 1316 #define udp6_ioctl udp6_ioctl_wrapper 1317 #define udp6_stat udp6_stat_wrapper 1318 #define udp6_peeraddr udp6_peeraddr_wrapper 1319 #define udp6_sockaddr udp6_sockaddr_wrapper 1320 #define udp6_rcvd udp6_rcvd_wrapper 1321 #define udp6_recvoob udp6_recvoob_wrapper 1322 #define udp6_send udp6_send_wrapper 1323 #define udp6_sendoob udp6_sendoob_wrapper 1324 #define udp6_purgeif udp6_purgeif_wrapper 1325 1326 const struct pr_usrreqs udp6_usrreqs = { 1327 .pr_attach = udp6_attach, 1328 .pr_detach = udp6_detach, 1329 .pr_accept = udp6_accept, 1330 .pr_bind = udp6_bind, 1331 .pr_listen = udp6_listen, 1332 .pr_connect = udp6_connect, 1333 .pr_connect2 = udp6_connect2, 1334 .pr_disconnect = udp6_disconnect, 1335 .pr_shutdown = udp6_shutdown, 1336 .pr_abort = udp6_abort, 1337 .pr_ioctl = udp6_ioctl, 1338 .pr_stat = udp6_stat, 1339 .pr_peeraddr = udp6_peeraddr, 1340 .pr_sockaddr = udp6_sockaddr, 1341 .pr_rcvd = udp6_rcvd, 1342 .pr_recvoob = udp6_recvoob, 1343 .pr_send = udp6_send, 1344 .pr_sendoob = udp6_sendoob, 1345 .pr_purgeif = udp6_purgeif, 1346 }; 1347