1 /* $NetBSD: udp_usrreq.c,v 1.248 2018/04/13 09:29:04 maxv 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, 1988, 1990, 1993, 1995 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. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95 61 */ 62 63 /* 64 * UDP protocol implementation. 65 * Per RFC 768, August, 1980. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: udp_usrreq.c,v 1.248 2018/04/13 09:29:04 maxv Exp $"); 70 71 #ifdef _KERNEL_OPT 72 #include "opt_inet.h" 73 #include "opt_ipsec.h" 74 #include "opt_inet_csum.h" 75 #include "opt_ipkdb.h" 76 #include "opt_mbuftrace.h" 77 #include "opt_net_mpsafe.h" 78 #endif 79 80 #include <sys/param.h> 81 #include <sys/mbuf.h> 82 #include <sys/once.h> 83 #include <sys/protosw.h> 84 #include <sys/socket.h> 85 #include <sys/socketvar.h> 86 #include <sys/systm.h> 87 #include <sys/proc.h> 88 #include <sys/domain.h> 89 #include <sys/sysctl.h> 90 91 #include <net/if.h> 92 93 #include <netinet/in.h> 94 #include <netinet/in_systm.h> 95 #include <netinet/in_var.h> 96 #include <netinet/ip.h> 97 #include <netinet/in_pcb.h> 98 #include <netinet/ip_var.h> 99 #include <netinet/ip_icmp.h> 100 #include <netinet/udp.h> 101 #include <netinet/udp_var.h> 102 #include <netinet/udp_private.h> 103 104 #ifdef INET6 105 #include <netinet/ip6.h> 106 #include <netinet/icmp6.h> 107 #include <netinet6/ip6_var.h> 108 #include <netinet6/ip6_private.h> 109 #include <netinet6/in6_pcb.h> 110 #include <netinet6/udp6_var.h> 111 #include <netinet6/udp6_private.h> 112 #endif 113 114 #ifndef INET6 115 /* always need ip6.h for IP6_EXTHDR_GET */ 116 #include <netinet/ip6.h> 117 #endif 118 119 #ifdef IPSEC 120 #include <netipsec/ipsec.h> 121 #include <netipsec/ipsec_var.h> 122 #include <netipsec/esp.h> 123 #ifdef INET6 124 #include <netipsec/ipsec6.h> 125 #endif 126 #endif 127 128 #ifdef IPKDB 129 #include <ipkdb/ipkdb.h> 130 #endif 131 132 int udpcksum = 1; 133 int udp_do_loopback_cksum = 0; 134 135 struct inpcbtable udbtable; 136 137 percpu_t *udpstat_percpu; 138 139 #ifdef INET 140 #ifdef IPSEC 141 static int udp4_espinudp(struct mbuf **, int, struct sockaddr *, 142 struct socket *); 143 #endif 144 static void udp4_sendup(struct mbuf *, int, struct sockaddr *, 145 struct socket *); 146 static int udp4_realinput(struct sockaddr_in *, struct sockaddr_in *, 147 struct mbuf **, int); 148 static int udp4_input_checksum(struct mbuf *, const struct udphdr *, int, int); 149 #endif 150 #ifdef INET 151 static void udp_notify (struct inpcb *, int); 152 #endif 153 154 #ifndef UDBHASHSIZE 155 #define UDBHASHSIZE 128 156 #endif 157 int udbhashsize = UDBHASHSIZE; 158 159 /* 160 * For send - really max datagram size; for receive - 40 1K datagrams. 161 */ 162 static int udp_sendspace = 9216; 163 static int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in)); 164 165 #ifdef MBUFTRACE 166 struct mowner udp_mowner = MOWNER_INIT("udp", ""); 167 struct mowner udp_rx_mowner = MOWNER_INIT("udp", "rx"); 168 struct mowner udp_tx_mowner = MOWNER_INIT("udp", "tx"); 169 #endif 170 171 #ifdef UDP_CSUM_COUNTERS 172 #include <sys/device.h> 173 174 #if defined(INET) 175 struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 176 NULL, "udp", "hwcsum bad"); 177 struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 178 NULL, "udp", "hwcsum ok"); 179 struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 180 NULL, "udp", "hwcsum data"); 181 struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 182 NULL, "udp", "swcsum"); 183 184 EVCNT_ATTACH_STATIC(udp_hwcsum_bad); 185 EVCNT_ATTACH_STATIC(udp_hwcsum_ok); 186 EVCNT_ATTACH_STATIC(udp_hwcsum_data); 187 EVCNT_ATTACH_STATIC(udp_swcsum); 188 #endif /* defined(INET) */ 189 190 #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ 191 #else 192 #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */ 193 #endif /* UDP_CSUM_COUNTERS */ 194 195 static void sysctl_net_inet_udp_setup(struct sysctllog **); 196 197 static int 198 do_udpinit(void) 199 { 200 201 in_pcbinit(&udbtable, udbhashsize, udbhashsize); 202 udpstat_percpu = percpu_alloc(sizeof(uint64_t) * UDP_NSTATS); 203 204 MOWNER_ATTACH(&udp_tx_mowner); 205 MOWNER_ATTACH(&udp_rx_mowner); 206 MOWNER_ATTACH(&udp_mowner); 207 208 return 0; 209 } 210 211 void 212 udp_init_common(void) 213 { 214 static ONCE_DECL(doudpinit); 215 216 RUN_ONCE(&doudpinit, do_udpinit); 217 } 218 219 void 220 udp_init(void) 221 { 222 223 sysctl_net_inet_udp_setup(NULL); 224 225 udp_init_common(); 226 } 227 228 /* 229 * Checksum extended UDP header and data. 230 */ 231 int 232 udp_input_checksum(int af, struct mbuf *m, const struct udphdr *uh, 233 int iphlen, int len) 234 { 235 236 switch (af) { 237 #ifdef INET 238 case AF_INET: 239 return udp4_input_checksum(m, uh, iphlen, len); 240 #endif 241 #ifdef INET6 242 case AF_INET6: 243 return udp6_input_checksum(m, uh, iphlen, len); 244 #endif 245 } 246 #ifdef DIAGNOSTIC 247 panic("udp_input_checksum: unknown af %d", af); 248 #endif 249 /* NOTREACHED */ 250 return -1; 251 } 252 253 #ifdef INET 254 255 /* 256 * Checksum extended UDP header and data. 257 */ 258 static int 259 udp4_input_checksum(struct mbuf *m, const struct udphdr *uh, 260 int iphlen, int len) 261 { 262 263 /* 264 * XXX it's better to record and check if this mbuf is 265 * already checked. 266 */ 267 268 if (uh->uh_sum == 0) 269 return 0; 270 271 switch (m->m_pkthdr.csum_flags & 272 ((m_get_rcvif_NOMPSAFE(m)->if_csum_flags_rx & M_CSUM_UDPv4) | 273 M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { 274 case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: 275 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); 276 goto badcsum; 277 278 case M_CSUM_UDPv4|M_CSUM_DATA: { 279 u_int32_t hw_csum = m->m_pkthdr.csum_data; 280 281 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); 282 if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR) { 283 const struct ip *ip = 284 mtod(m, const struct ip *); 285 286 hw_csum = in_cksum_phdr(ip->ip_src.s_addr, 287 ip->ip_dst.s_addr, 288 htons(hw_csum + len + IPPROTO_UDP)); 289 } 290 if ((hw_csum ^ 0xffff) != 0) 291 goto badcsum; 292 break; 293 } 294 295 case M_CSUM_UDPv4: 296 /* Checksum was okay. */ 297 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); 298 break; 299 300 default: 301 /* 302 * Need to compute it ourselves. Maybe skip checksum 303 * on loopback interfaces. 304 */ 305 if (__predict_true(!(m_get_rcvif_NOMPSAFE(m)->if_flags & 306 IFF_LOOPBACK) || 307 udp_do_loopback_cksum)) { 308 UDP_CSUM_COUNTER_INCR(&udp_swcsum); 309 if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) 310 goto badcsum; 311 } 312 break; 313 } 314 315 return 0; 316 317 badcsum: 318 UDP_STATINC(UDP_STAT_BADSUM); 319 return -1; 320 } 321 322 void 323 udp_input(struct mbuf *m, ...) 324 { 325 va_list ap; 326 struct sockaddr_in src, dst; 327 struct ip *ip; 328 struct udphdr *uh; 329 int iphlen; 330 int len; 331 int n; 332 u_int16_t ip_len; 333 334 va_start(ap, m); 335 iphlen = va_arg(ap, int); 336 (void)va_arg(ap, int); /* ignore value, advance ap */ 337 va_end(ap); 338 339 MCLAIM(m, &udp_rx_mowner); 340 UDP_STATINC(UDP_STAT_IPACKETS); 341 342 /* 343 * Get IP and UDP header together in first mbuf. 344 */ 345 ip = mtod(m, struct ip *); 346 IP6_EXTHDR_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr)); 347 if (uh == NULL) { 348 UDP_STATINC(UDP_STAT_HDROPS); 349 return; 350 } 351 352 /* 353 * Enforce alignment requirements that are violated in 354 * some cases, see kern/50766 for details. 355 */ 356 if (UDP_HDR_ALIGNED_P(uh) == 0) { 357 m = m_copyup(m, iphlen + sizeof(struct udphdr), 0); 358 if (m == NULL) { 359 UDP_STATINC(UDP_STAT_HDROPS); 360 return; 361 } 362 ip = mtod(m, struct ip *); 363 uh = (struct udphdr *)(mtod(m, char *) + iphlen); 364 } 365 KASSERT(UDP_HDR_ALIGNED_P(uh)); 366 367 /* destination port of 0 is illegal, based on RFC768. */ 368 if (uh->uh_dport == 0) 369 goto bad; 370 371 /* 372 * Make mbuf data length reflect UDP length. 373 * If not enough data to reflect UDP length, drop. 374 */ 375 ip_len = ntohs(ip->ip_len); 376 len = ntohs((u_int16_t)uh->uh_ulen); 377 if (len < sizeof(struct udphdr)) { 378 UDP_STATINC(UDP_STAT_BADLEN); 379 goto bad; 380 } 381 if (ip_len != iphlen + len) { 382 if (ip_len < iphlen + len) { 383 UDP_STATINC(UDP_STAT_BADLEN); 384 goto bad; 385 } 386 m_adj(m, iphlen + len - ip_len); 387 } 388 389 /* 390 * Checksum extended UDP header and data. 391 */ 392 if (udp4_input_checksum(m, uh, iphlen, len)) 393 goto badcsum; 394 395 /* construct source and dst sockaddrs. */ 396 sockaddr_in_init(&src, &ip->ip_src, uh->uh_sport); 397 sockaddr_in_init(&dst, &ip->ip_dst, uh->uh_dport); 398 399 if ((n = udp4_realinput(&src, &dst, &m, iphlen)) == -1) { 400 UDP_STATINC(UDP_STAT_HDROPS); 401 return; 402 } 403 if (m == NULL) { 404 /* 405 * packet has been processed by ESP stuff - 406 * e.g. dropped NAT-T-keep-alive-packet ... 407 */ 408 return; 409 } 410 411 ip = mtod(m, struct ip *); 412 IP6_EXTHDR_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr)); 413 if (uh == NULL) { 414 UDP_STATINC(UDP_STAT_HDROPS); 415 return; 416 } 417 /* XXX Re-enforce alignment? */ 418 419 #ifdef INET6 420 if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) { 421 struct sockaddr_in6 src6, dst6; 422 423 memset(&src6, 0, sizeof(src6)); 424 src6.sin6_family = AF_INET6; 425 src6.sin6_len = sizeof(struct sockaddr_in6); 426 in6_in_2_v4mapin6(&ip->ip_src, &src6.sin6_addr); 427 src6.sin6_port = uh->uh_sport; 428 memset(&dst6, 0, sizeof(dst6)); 429 dst6.sin6_family = AF_INET6; 430 dst6.sin6_len = sizeof(struct sockaddr_in6); 431 in6_in_2_v4mapin6(&ip->ip_dst, &dst6.sin6_addr); 432 dst6.sin6_port = uh->uh_dport; 433 434 n += udp6_realinput(AF_INET, &src6, &dst6, m, iphlen); 435 } 436 #endif 437 438 if (n == 0) { 439 if (m->m_flags & (M_BCAST | M_MCAST)) { 440 UDP_STATINC(UDP_STAT_NOPORTBCAST); 441 goto bad; 442 } 443 UDP_STATINC(UDP_STAT_NOPORT); 444 #ifdef IPKDB 445 if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport, 446 m, iphlen + sizeof(struct udphdr), 447 m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) { 448 /* 449 * It was a debugger connect packet, 450 * just drop it now 451 */ 452 goto bad; 453 } 454 #endif 455 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0); 456 m = NULL; 457 } 458 459 bad: 460 if (m) 461 m_freem(m); 462 return; 463 464 badcsum: 465 m_freem(m); 466 } 467 #endif 468 469 #ifdef INET 470 static void 471 udp4_sendup(struct mbuf *m, int off /* offset of data portion */, 472 struct sockaddr *src, struct socket *so) 473 { 474 struct mbuf *opts = NULL; 475 struct mbuf *n; 476 struct inpcb *inp; 477 478 KASSERT(so != NULL); 479 KASSERT(so->so_proto->pr_domain->dom_family == AF_INET); 480 inp = sotoinpcb(so); 481 KASSERT(inp != NULL); 482 483 #if defined(IPSEC) 484 if (ipsec_used && ipsec_in_reject(m, inp)) { 485 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) 486 icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT, 487 0, 0); 488 return; 489 } 490 #endif 491 492 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { 493 if (inp->inp_flags & INP_CONTROLOPTS || 494 SOOPT_TIMESTAMP(so->so_options)) { 495 struct ip *ip = mtod(n, struct ip *); 496 ip_savecontrol(inp, &opts, ip, n); 497 } 498 499 m_adj(n, off); 500 if (sbappendaddr(&so->so_rcv, src, n, opts) == 0) { 501 m_freem(n); 502 if (opts) 503 m_freem(opts); 504 UDP_STATINC(UDP_STAT_FULLSOCK); 505 soroverflow(so); 506 } else 507 sorwakeup(so); 508 } 509 } 510 #endif 511 512 #ifdef INET 513 static int 514 udp4_realinput(struct sockaddr_in *src, struct sockaddr_in *dst, 515 struct mbuf **mp, int off /* offset of udphdr */) 516 { 517 u_int16_t *sport, *dport; 518 int rcvcnt; 519 struct in_addr *src4, *dst4; 520 struct inpcb_hdr *inph; 521 struct inpcb *inp; 522 struct mbuf *m = *mp; 523 524 rcvcnt = 0; 525 off += sizeof(struct udphdr); /* now, offset of payload */ 526 527 if (src->sin_family != AF_INET || dst->sin_family != AF_INET) 528 goto bad; 529 530 src4 = &src->sin_addr; 531 sport = &src->sin_port; 532 dst4 = &dst->sin_addr; 533 dport = &dst->sin_port; 534 535 if (IN_MULTICAST(dst4->s_addr) || 536 in_broadcast(*dst4, m_get_rcvif_NOMPSAFE(m))) { 537 /* 538 * Deliver a multicast or broadcast datagram to *all* sockets 539 * for which the local and remote addresses and ports match 540 * those of the incoming datagram. This allows more than 541 * one process to receive multi/broadcasts on the same port. 542 * (This really ought to be done for unicast datagrams as 543 * well, but that would cause problems with existing 544 * applications that open both address-specific sockets and 545 * a wildcard socket listening to the same port -- they would 546 * end up receiving duplicates of every unicast datagram. 547 * Those applications open the multiple sockets to overcome an 548 * inadequacy of the UDP socket interface, but for backwards 549 * compatibility we avoid the problem here rather than 550 * fixing the interface. Maybe 4.5BSD will remedy this?) 551 */ 552 553 /* 554 * KAME note: traditionally we dropped udpiphdr from mbuf here. 555 * we need udpiphdr for IPsec processing so we do that later. 556 */ 557 /* 558 * Locate pcb(s) for datagram. 559 */ 560 TAILQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) { 561 inp = (struct inpcb *)inph; 562 if (inp->inp_af != AF_INET) 563 continue; 564 565 if (inp->inp_lport != *dport) 566 continue; 567 if (!in_nullhost(inp->inp_laddr)) { 568 if (!in_hosteq(inp->inp_laddr, *dst4)) 569 continue; 570 } 571 if (!in_nullhost(inp->inp_faddr)) { 572 if (!in_hosteq(inp->inp_faddr, *src4) || 573 inp->inp_fport != *sport) 574 continue; 575 } 576 577 udp4_sendup(m, off, (struct sockaddr *)src, 578 inp->inp_socket); 579 rcvcnt++; 580 581 /* 582 * Don't look for additional matches if this one does 583 * not have either the SO_REUSEPORT or SO_REUSEADDR 584 * socket options set. This heuristic avoids searching 585 * through all pcbs in the common case of a non-shared 586 * port. It assumes that an application will never 587 * clear these options after setting them. 588 */ 589 if ((inp->inp_socket->so_options & 590 (SO_REUSEPORT|SO_REUSEADDR)) == 0) 591 break; 592 } 593 } else { 594 /* 595 * Locate pcb for datagram. 596 */ 597 inp = in_pcblookup_connect(&udbtable, *src4, *sport, *dst4, 598 *dport, 0); 599 if (inp == 0) { 600 UDP_STATINC(UDP_STAT_PCBHASHMISS); 601 inp = in_pcblookup_bind(&udbtable, *dst4, *dport); 602 if (inp == 0) 603 return rcvcnt; 604 } 605 606 #ifdef IPSEC 607 /* Handle ESP over UDP */ 608 if (inp->inp_flags & INP_ESPINUDP_ALL) { 609 struct sockaddr *sa = (struct sockaddr *)src; 610 611 switch (udp4_espinudp(mp, off, sa, inp->inp_socket)) { 612 case -1: /* Error, m was freed */ 613 rcvcnt = -1; 614 goto bad; 615 616 case 1: /* ESP over UDP */ 617 rcvcnt++; 618 goto bad; 619 620 case 0: /* plain UDP */ 621 default: /* Unexpected */ 622 /* 623 * Normal UDP processing will take place, 624 * m may have changed. 625 */ 626 m = *mp; 627 break; 628 } 629 } 630 #endif 631 632 /* 633 * Check the minimum TTL for socket. 634 */ 635 if (mtod(m, struct ip *)->ip_ttl < inp->inp_ip_minttl) 636 goto bad; 637 638 udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket); 639 rcvcnt++; 640 } 641 642 bad: 643 return rcvcnt; 644 } 645 #endif 646 647 #ifdef INET 648 /* 649 * Notify a udp user of an asynchronous error; 650 * just wake up so that he can collect error status. 651 */ 652 static void 653 udp_notify(struct inpcb *inp, int errno) 654 { 655 inp->inp_socket->so_error = errno; 656 sorwakeup(inp->inp_socket); 657 sowwakeup(inp->inp_socket); 658 } 659 660 void * 661 udp_ctlinput(int cmd, const struct sockaddr *sa, void *v) 662 { 663 struct ip *ip = v; 664 struct udphdr *uh; 665 void (*notify)(struct inpcb *, int) = udp_notify; 666 int errno; 667 668 if (sa->sa_family != AF_INET || 669 sa->sa_len != sizeof(struct sockaddr_in)) 670 return NULL; 671 if ((unsigned)cmd >= PRC_NCMDS) 672 return NULL; 673 674 errno = inetctlerrmap[cmd]; 675 if (PRC_IS_REDIRECT(cmd)) { 676 notify = in_rtchange; 677 ip = NULL; 678 } else if (cmd == PRC_HOSTDEAD) { 679 ip = NULL; 680 } else if (errno == 0) { 681 return NULL; 682 } 683 684 if (ip) { 685 uh = (struct udphdr *)((char *)ip + (ip->ip_hl << 2)); 686 in_pcbnotify(&udbtable, satocsin(sa)->sin_addr, uh->uh_dport, 687 ip->ip_src, uh->uh_sport, errno, notify); 688 /* XXX mapped address case */ 689 } else { 690 in_pcbnotifyall(&udbtable, satocsin(sa)->sin_addr, errno, 691 notify); 692 } 693 694 return NULL; 695 } 696 697 int 698 udp_ctloutput(int op, struct socket *so, struct sockopt *sopt) 699 { 700 int s; 701 int error = 0; 702 struct inpcb *inp; 703 int family; 704 int optval; 705 706 family = so->so_proto->pr_domain->dom_family; 707 708 s = splsoftnet(); 709 switch (family) { 710 #ifdef INET 711 case PF_INET: 712 if (sopt->sopt_level != IPPROTO_UDP) { 713 error = ip_ctloutput(op, so, sopt); 714 goto end; 715 } 716 break; 717 #endif 718 #ifdef INET6 719 case PF_INET6: 720 if (sopt->sopt_level != IPPROTO_UDP) { 721 error = ip6_ctloutput(op, so, sopt); 722 goto end; 723 } 724 break; 725 #endif 726 default: 727 error = EAFNOSUPPORT; 728 goto end; 729 } 730 731 732 switch (op) { 733 case PRCO_SETOPT: 734 inp = sotoinpcb(so); 735 736 switch (sopt->sopt_name) { 737 case UDP_ENCAP: 738 error = sockopt_getint(sopt, &optval); 739 if (error) 740 break; 741 742 switch(optval) { 743 case 0: 744 inp->inp_flags &= ~INP_ESPINUDP_ALL; 745 break; 746 747 case UDP_ENCAP_ESPINUDP: 748 inp->inp_flags &= ~INP_ESPINUDP_ALL; 749 inp->inp_flags |= INP_ESPINUDP; 750 break; 751 752 case UDP_ENCAP_ESPINUDP_NON_IKE: 753 inp->inp_flags &= ~INP_ESPINUDP_ALL; 754 inp->inp_flags |= INP_ESPINUDP_NON_IKE; 755 break; 756 default: 757 error = EINVAL; 758 break; 759 } 760 break; 761 762 default: 763 error = ENOPROTOOPT; 764 break; 765 } 766 break; 767 768 default: 769 error = EINVAL; 770 break; 771 } 772 773 end: 774 splx(s); 775 return error; 776 } 777 778 int 779 udp_output(struct mbuf *m, struct inpcb *inp, struct mbuf *control, 780 struct lwp *l) 781 { 782 struct udpiphdr *ui; 783 struct route *ro; 784 struct ip_pktopts pktopts; 785 kauth_cred_t cred; 786 int len = m->m_pkthdr.len; 787 int error, flags = 0; 788 789 MCLAIM(m, &udp_tx_mowner); 790 791 /* 792 * Calculate data length and get a mbuf 793 * for UDP and IP headers. 794 */ 795 M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT); 796 if (m == NULL) { 797 error = ENOBUFS; 798 goto release; 799 } 800 801 /* 802 * Compute the packet length of the IP header, and 803 * punt if the length looks bogus. 804 */ 805 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) { 806 error = EMSGSIZE; 807 goto release; 808 } 809 810 if (l == NULL) 811 cred = NULL; 812 else 813 cred = l->l_cred; 814 815 /* Setup IP outgoing packet options */ 816 memset(&pktopts, 0, sizeof(pktopts)); 817 error = ip_setpktopts(control, &pktopts, &flags, inp, cred); 818 if (error != 0) 819 goto release; 820 821 if (control != NULL) { 822 m_freem(control); 823 control = NULL; 824 } 825 826 /* 827 * Fill in mbuf with extended UDP header 828 * and addresses and length put into network format. 829 */ 830 ui = mtod(m, struct udpiphdr *); 831 ui->ui_pr = IPPROTO_UDP; 832 ui->ui_src = pktopts.ippo_laddr.sin_addr; 833 ui->ui_dst = inp->inp_faddr; 834 ui->ui_sport = inp->inp_lport; 835 ui->ui_dport = inp->inp_fport; 836 ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr)); 837 838 ro = &inp->inp_route; 839 840 /* 841 * Set up checksum and output datagram. 842 */ 843 if (udpcksum) { 844 /* 845 * XXX Cache pseudo-header checksum part for 846 * XXX "connected" UDP sockets. 847 */ 848 ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr, 849 ui->ui_dst.s_addr, htons((u_int16_t)len + 850 sizeof(struct udphdr) + IPPROTO_UDP)); 851 m->m_pkthdr.csum_flags = M_CSUM_UDPv4; 852 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); 853 } else 854 ui->ui_sum = 0; 855 856 ((struct ip *)ui)->ip_len = htons(sizeof(struct udpiphdr) + len); 857 ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ 858 ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ 859 UDP_STATINC(UDP_STAT_OPACKETS); 860 861 flags |= inp->inp_socket->so_options & (SO_DONTROUTE|SO_BROADCAST); 862 return ip_output(m, inp->inp_options, ro, flags, pktopts.ippo_imo, inp); 863 864 release: 865 if (control != NULL) 866 m_freem(control); 867 m_freem(m); 868 return error; 869 } 870 871 static int 872 udp_attach(struct socket *so, int proto) 873 { 874 struct inpcb *inp; 875 int error; 876 877 KASSERT(sotoinpcb(so) == NULL); 878 879 /* Assign the lock (must happen even if we will error out). */ 880 sosetlock(so); 881 882 #ifdef MBUFTRACE 883 so->so_mowner = &udp_mowner; 884 so->so_rcv.sb_mowner = &udp_rx_mowner; 885 so->so_snd.sb_mowner = &udp_tx_mowner; 886 #endif 887 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 888 error = soreserve(so, udp_sendspace, udp_recvspace); 889 if (error) { 890 return error; 891 } 892 } 893 894 error = in_pcballoc(so, &udbtable); 895 if (error) { 896 return error; 897 } 898 inp = sotoinpcb(so); 899 inp->inp_ip.ip_ttl = ip_defttl; 900 KASSERT(solocked(so)); 901 902 return error; 903 } 904 905 static void 906 udp_detach(struct socket *so) 907 { 908 struct inpcb *inp; 909 910 KASSERT(solocked(so)); 911 inp = sotoinpcb(so); 912 KASSERT(inp != NULL); 913 in_pcbdetach(inp); 914 } 915 916 static int 917 udp_accept(struct socket *so, struct sockaddr *nam) 918 { 919 KASSERT(solocked(so)); 920 921 panic("udp_accept"); 922 923 return EOPNOTSUPP; 924 } 925 926 static int 927 udp_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 928 { 929 struct inpcb *inp = sotoinpcb(so); 930 struct sockaddr_in *sin = (struct sockaddr_in *)nam; 931 int error = 0; 932 int s; 933 934 KASSERT(solocked(so)); 935 KASSERT(inp != NULL); 936 KASSERT(nam != NULL); 937 938 s = splsoftnet(); 939 error = in_pcbbind(inp, sin, l); 940 splx(s); 941 942 return error; 943 } 944 945 static int 946 udp_listen(struct socket *so, struct lwp *l) 947 { 948 KASSERT(solocked(so)); 949 950 return EOPNOTSUPP; 951 } 952 953 static int 954 udp_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 955 { 956 struct inpcb *inp = sotoinpcb(so); 957 int error = 0; 958 int s; 959 960 KASSERT(solocked(so)); 961 KASSERT(inp != NULL); 962 KASSERT(nam != NULL); 963 964 s = splsoftnet(); 965 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); 966 if (! error) 967 soisconnected(so); 968 splx(s); 969 return error; 970 } 971 972 static int 973 udp_connect2(struct socket *so, struct socket *so2) 974 { 975 KASSERT(solocked(so)); 976 977 return EOPNOTSUPP; 978 } 979 980 static int 981 udp_disconnect(struct socket *so) 982 { 983 struct inpcb *inp = sotoinpcb(so); 984 int s; 985 986 KASSERT(solocked(so)); 987 KASSERT(inp != NULL); 988 989 s = splsoftnet(); 990 /*soisdisconnected(so);*/ 991 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 992 in_pcbdisconnect(inp); 993 inp->inp_laddr = zeroin_addr; /* XXX */ 994 in_pcbstate(inp, INP_BOUND); /* XXX */ 995 splx(s); 996 997 return 0; 998 } 999 1000 static int 1001 udp_shutdown(struct socket *so) 1002 { 1003 int s; 1004 1005 KASSERT(solocked(so)); 1006 1007 s = splsoftnet(); 1008 socantsendmore(so); 1009 splx(s); 1010 1011 return 0; 1012 } 1013 1014 static int 1015 udp_abort(struct socket *so) 1016 { 1017 KASSERT(solocked(so)); 1018 1019 panic("udp_abort"); 1020 1021 return EOPNOTSUPP; 1022 } 1023 1024 static int 1025 udp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1026 { 1027 return in_control(so, cmd, nam, ifp); 1028 } 1029 1030 static int 1031 udp_stat(struct socket *so, struct stat *ub) 1032 { 1033 KASSERT(solocked(so)); 1034 1035 /* stat: don't bother with a blocksize. */ 1036 return 0; 1037 } 1038 1039 static int 1040 udp_peeraddr(struct socket *so, struct sockaddr *nam) 1041 { 1042 int s; 1043 1044 KASSERT(solocked(so)); 1045 KASSERT(sotoinpcb(so) != NULL); 1046 KASSERT(nam != NULL); 1047 1048 s = splsoftnet(); 1049 in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam); 1050 splx(s); 1051 1052 return 0; 1053 } 1054 1055 static int 1056 udp_sockaddr(struct socket *so, struct sockaddr *nam) 1057 { 1058 int s; 1059 1060 KASSERT(solocked(so)); 1061 KASSERT(sotoinpcb(so) != NULL); 1062 KASSERT(nam != NULL); 1063 1064 s = splsoftnet(); 1065 in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam); 1066 splx(s); 1067 1068 return 0; 1069 } 1070 1071 static int 1072 udp_rcvd(struct socket *so, int flags, struct lwp *l) 1073 { 1074 KASSERT(solocked(so)); 1075 1076 return EOPNOTSUPP; 1077 } 1078 1079 static int 1080 udp_recvoob(struct socket *so, struct mbuf *m, int flags) 1081 { 1082 KASSERT(solocked(so)); 1083 1084 return EOPNOTSUPP; 1085 } 1086 1087 static int 1088 udp_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 1089 struct mbuf *control, struct lwp *l) 1090 { 1091 struct inpcb *inp = sotoinpcb(so); 1092 int error = 0; 1093 struct in_addr laddr; /* XXX */ 1094 int s; 1095 1096 KASSERT(solocked(so)); 1097 KASSERT(inp != NULL); 1098 KASSERT(m != NULL); 1099 1100 memset(&laddr, 0, sizeof laddr); 1101 1102 s = splsoftnet(); 1103 if (nam) { 1104 laddr = inp->inp_laddr; /* XXX */ 1105 if ((so->so_state & SS_ISCONNECTED) != 0) { 1106 error = EISCONN; 1107 goto die; 1108 } 1109 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); 1110 if (error) 1111 goto die; 1112 } else { 1113 if ((so->so_state & SS_ISCONNECTED) == 0) { 1114 error = ENOTCONN; 1115 goto die; 1116 } 1117 } 1118 error = udp_output(m, inp, control, l); 1119 m = NULL; 1120 control = NULL; 1121 if (nam) { 1122 in_pcbdisconnect(inp); 1123 inp->inp_laddr = laddr; /* XXX */ 1124 in_pcbstate(inp, INP_BOUND); /* XXX */ 1125 } 1126 die: 1127 if (m != NULL) 1128 m_freem(m); 1129 if (control != NULL) 1130 m_freem(control); 1131 1132 splx(s); 1133 return error; 1134 } 1135 1136 static int 1137 udp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 1138 { 1139 KASSERT(solocked(so)); 1140 1141 m_freem(m); 1142 m_freem(control); 1143 1144 return EOPNOTSUPP; 1145 } 1146 1147 static int 1148 udp_purgeif(struct socket *so, struct ifnet *ifp) 1149 { 1150 int s; 1151 1152 s = splsoftnet(); 1153 mutex_enter(softnet_lock); 1154 in_pcbpurgeif0(&udbtable, ifp); 1155 #ifdef NET_MPSAFE 1156 mutex_exit(softnet_lock); 1157 #endif 1158 in_purgeif(ifp); 1159 #ifdef NET_MPSAFE 1160 mutex_enter(softnet_lock); 1161 #endif 1162 in_pcbpurgeif(&udbtable, ifp); 1163 mutex_exit(softnet_lock); 1164 splx(s); 1165 1166 return 0; 1167 } 1168 1169 static int 1170 sysctl_net_inet_udp_stats(SYSCTLFN_ARGS) 1171 { 1172 1173 return (NETSTAT_SYSCTL(udpstat_percpu, UDP_NSTATS)); 1174 } 1175 1176 /* 1177 * Sysctl for udp variables. 1178 */ 1179 static void 1180 sysctl_net_inet_udp_setup(struct sysctllog **clog) 1181 { 1182 1183 sysctl_createv(clog, 0, NULL, NULL, 1184 CTLFLAG_PERMANENT, 1185 CTLTYPE_NODE, "inet", NULL, 1186 NULL, 0, NULL, 0, 1187 CTL_NET, PF_INET, CTL_EOL); 1188 sysctl_createv(clog, 0, NULL, NULL, 1189 CTLFLAG_PERMANENT, 1190 CTLTYPE_NODE, "udp", 1191 SYSCTL_DESCR("UDPv4 related settings"), 1192 NULL, 0, NULL, 0, 1193 CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL); 1194 1195 sysctl_createv(clog, 0, NULL, NULL, 1196 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1197 CTLTYPE_INT, "checksum", 1198 SYSCTL_DESCR("Compute UDP checksums"), 1199 NULL, 0, &udpcksum, 0, 1200 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM, 1201 CTL_EOL); 1202 sysctl_createv(clog, 0, NULL, NULL, 1203 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1204 CTLTYPE_INT, "sendspace", 1205 SYSCTL_DESCR("Default UDP send buffer size"), 1206 NULL, 0, &udp_sendspace, 0, 1207 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE, 1208 CTL_EOL); 1209 sysctl_createv(clog, 0, NULL, NULL, 1210 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1211 CTLTYPE_INT, "recvspace", 1212 SYSCTL_DESCR("Default UDP receive buffer size"), 1213 NULL, 0, &udp_recvspace, 0, 1214 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE, 1215 CTL_EOL); 1216 sysctl_createv(clog, 0, NULL, NULL, 1217 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1218 CTLTYPE_INT, "do_loopback_cksum", 1219 SYSCTL_DESCR("Perform UDP checksum on loopback"), 1220 NULL, 0, &udp_do_loopback_cksum, 0, 1221 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM, 1222 CTL_EOL); 1223 sysctl_createv(clog, 0, NULL, NULL, 1224 CTLFLAG_PERMANENT, 1225 CTLTYPE_STRUCT, "pcblist", 1226 SYSCTL_DESCR("UDP protocol control block list"), 1227 sysctl_inpcblist, 0, &udbtable, 0, 1228 CTL_NET, PF_INET, IPPROTO_UDP, CTL_CREATE, 1229 CTL_EOL); 1230 sysctl_createv(clog, 0, NULL, NULL, 1231 CTLFLAG_PERMANENT, 1232 CTLTYPE_STRUCT, "stats", 1233 SYSCTL_DESCR("UDP statistics"), 1234 sysctl_net_inet_udp_stats, 0, NULL, 0, 1235 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_STATS, 1236 CTL_EOL); 1237 } 1238 #endif 1239 1240 void 1241 udp_statinc(u_int stat) 1242 { 1243 1244 KASSERT(stat < UDP_NSTATS); 1245 UDP_STATINC(stat); 1246 } 1247 1248 #if defined(INET) && defined(IPSEC) 1249 /* 1250 * Returns: 1251 * 1 if the packet was processed 1252 * 0 if normal UDP processing should take place 1253 * -1 if an error occurred and m was freed 1254 */ 1255 static int 1256 udp4_espinudp(struct mbuf **mp, int off, struct sockaddr *src, 1257 struct socket *so) 1258 { 1259 size_t len; 1260 void *data; 1261 struct inpcb *inp; 1262 size_t skip = 0; 1263 size_t minlen; 1264 size_t iphdrlen; 1265 struct ip *ip; 1266 struct m_tag *tag; 1267 struct udphdr *udphdr; 1268 u_int16_t sport, dport; 1269 struct mbuf *m = *mp; 1270 1271 /* 1272 * Collapse the mbuf chain if the first mbuf is too short 1273 * The longest case is: UDP + non ESP marker + ESP. 1274 */ 1275 minlen = off + sizeof(u_int64_t) + sizeof(struct esp); 1276 if (minlen > m->m_pkthdr.len) 1277 minlen = m->m_pkthdr.len; 1278 1279 if (m->m_len < minlen) { 1280 if ((*mp = m_pullup(m, minlen)) == NULL) { 1281 return -1; 1282 } 1283 m = *mp; 1284 } 1285 1286 len = m->m_len - off; 1287 data = mtod(m, char *) + off; 1288 inp = sotoinpcb(so); 1289 1290 /* Ignore keepalive packets */ 1291 if ((len == 1) && (*(unsigned char *)data == 0xff)) { 1292 m_freem(m); 1293 *mp = NULL; /* avoid any further processing by caller ... */ 1294 return 1; 1295 } 1296 1297 /* 1298 * Check that the payload is long enough to hold 1299 * an ESP header and compute the length of encapsulation 1300 * header to remove 1301 */ 1302 if (inp->inp_flags & INP_ESPINUDP) { 1303 u_int32_t *st = (u_int32_t *)data; 1304 1305 if ((len <= sizeof(struct esp)) || (*st == 0)) 1306 return 0; /* Normal UDP processing */ 1307 1308 skip = sizeof(struct udphdr); 1309 } 1310 1311 if (inp->inp_flags & INP_ESPINUDP_NON_IKE) { 1312 u_int32_t *st = (u_int32_t *)data; 1313 1314 if ((len <= sizeof(u_int64_t) + sizeof(struct esp)) || 1315 ((st[0] | st[1]) != 0)) 1316 return 0; /* Normal UDP processing */ 1317 1318 skip = sizeof(struct udphdr) + sizeof(u_int64_t); 1319 } 1320 1321 /* 1322 * Get the UDP ports. They are handled in network 1323 * order everywhere in IPSEC_NAT_T code. 1324 */ 1325 udphdr = (struct udphdr *)((char *)data - skip); 1326 sport = udphdr->uh_sport; 1327 dport = udphdr->uh_dport; 1328 1329 /* 1330 * Remove the UDP header (and possibly the non ESP marker) 1331 * IP header length is iphdrlen 1332 * Before: 1333 * <--- off ---> 1334 * +----+------+-----+ 1335 * | IP | UDP | ESP | 1336 * +----+------+-----+ 1337 * <-skip-> 1338 * After: 1339 * +----+-----+ 1340 * | IP | ESP | 1341 * +----+-----+ 1342 * <-skip-> 1343 */ 1344 iphdrlen = off - sizeof(struct udphdr); 1345 memmove(mtod(m, char *) + skip, mtod(m, void *), iphdrlen); 1346 m_adj(m, skip); 1347 1348 ip = mtod(m, struct ip *); 1349 ip->ip_len = htons(ntohs(ip->ip_len) - skip); 1350 ip->ip_p = IPPROTO_ESP; 1351 1352 /* 1353 * We have modified the packet - it is now ESP, so we should not 1354 * return to UDP processing ... 1355 * 1356 * Add a PACKET_TAG_IPSEC_NAT_T_PORT tag to remember 1357 * the source UDP port. This is required if we want 1358 * to select the right SPD for multiple hosts behind 1359 * same NAT 1360 */ 1361 if ((tag = m_tag_get(PACKET_TAG_IPSEC_NAT_T_PORTS, 1362 sizeof(sport) + sizeof(dport), M_DONTWAIT)) == NULL) { 1363 m_freem(m); 1364 return -1; 1365 } 1366 ((u_int16_t *)(tag + 1))[0] = sport; 1367 ((u_int16_t *)(tag + 1))[1] = dport; 1368 m_tag_prepend(m, tag); 1369 1370 if (ipsec_used) 1371 ipsec4_common_input(m, iphdrlen, IPPROTO_ESP); 1372 else 1373 m_freem(m); 1374 1375 /* We handled it, it shouldn't be handled by UDP */ 1376 *mp = NULL; /* avoid free by caller ... */ 1377 return 1; 1378 } 1379 #endif 1380 1381 PR_WRAP_USRREQS(udp) 1382 #define udp_attach udp_attach_wrapper 1383 #define udp_detach udp_detach_wrapper 1384 #define udp_accept udp_accept_wrapper 1385 #define udp_bind udp_bind_wrapper 1386 #define udp_listen udp_listen_wrapper 1387 #define udp_connect udp_connect_wrapper 1388 #define udp_connect2 udp_connect2_wrapper 1389 #define udp_disconnect udp_disconnect_wrapper 1390 #define udp_shutdown udp_shutdown_wrapper 1391 #define udp_abort udp_abort_wrapper 1392 #define udp_ioctl udp_ioctl_wrapper 1393 #define udp_stat udp_stat_wrapper 1394 #define udp_peeraddr udp_peeraddr_wrapper 1395 #define udp_sockaddr udp_sockaddr_wrapper 1396 #define udp_rcvd udp_rcvd_wrapper 1397 #define udp_recvoob udp_recvoob_wrapper 1398 #define udp_send udp_send_wrapper 1399 #define udp_sendoob udp_sendoob_wrapper 1400 #define udp_purgeif udp_purgeif_wrapper 1401 1402 const struct pr_usrreqs udp_usrreqs = { 1403 .pr_attach = udp_attach, 1404 .pr_detach = udp_detach, 1405 .pr_accept = udp_accept, 1406 .pr_bind = udp_bind, 1407 .pr_listen = udp_listen, 1408 .pr_connect = udp_connect, 1409 .pr_connect2 = udp_connect2, 1410 .pr_disconnect = udp_disconnect, 1411 .pr_shutdown = udp_shutdown, 1412 .pr_abort = udp_abort, 1413 .pr_ioctl = udp_ioctl, 1414 .pr_stat = udp_stat, 1415 .pr_peeraddr = udp_peeraddr, 1416 .pr_sockaddr = udp_sockaddr, 1417 .pr_rcvd = udp_rcvd, 1418 .pr_recvoob = udp_recvoob, 1419 .pr_send = udp_send, 1420 .pr_sendoob = udp_sendoob, 1421 .pr_purgeif = udp_purgeif, 1422 }; 1423