udp_usrreq.c revision 1.245.2.4
1 /* $NetBSD: udp_usrreq.c,v 1.245.2.4 2018/05/21 04:36:16 pgoyette 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 1.245.2.4 2018/05/21 04:36:16 pgoyette 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 <netinet6/ip6_var.h> 107 #include <netinet6/ip6_private.h> 108 #include <netinet6/in6_pcb.h> 109 #include <netinet6/udp6_var.h> 110 #include <netinet6/udp6_private.h> 111 #endif 112 113 #ifndef INET6 114 #include <netinet/ip6.h> 115 #endif 116 117 #ifdef IPSEC 118 #include <netipsec/ipsec.h> 119 #include <netipsec/esp.h> 120 #endif 121 122 #ifdef IPKDB 123 #include <ipkdb/ipkdb.h> 124 #endif 125 126 int udpcksum = 1; 127 int udp_do_loopback_cksum = 0; 128 129 struct inpcbtable udbtable; 130 131 percpu_t *udpstat_percpu; 132 133 #ifdef INET 134 #ifdef IPSEC 135 static int udp4_espinudp(struct mbuf **, int, struct socket *); 136 #endif 137 static void udp4_sendup(struct mbuf *, int, struct sockaddr *, 138 struct socket *); 139 static int udp4_realinput(struct sockaddr_in *, struct sockaddr_in *, 140 struct mbuf **, int); 141 static int udp4_input_checksum(struct mbuf *, const struct udphdr *, int, int); 142 #endif 143 #ifdef INET 144 static void udp_notify (struct inpcb *, int); 145 #endif 146 147 #ifndef UDBHASHSIZE 148 #define UDBHASHSIZE 128 149 #endif 150 int udbhashsize = UDBHASHSIZE; 151 152 /* 153 * For send - really max datagram size; for receive - 40 1K datagrams. 154 */ 155 static int udp_sendspace = 9216; 156 static int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in)); 157 158 #ifdef MBUFTRACE 159 struct mowner udp_mowner = MOWNER_INIT("udp", ""); 160 struct mowner udp_rx_mowner = MOWNER_INIT("udp", "rx"); 161 struct mowner udp_tx_mowner = MOWNER_INIT("udp", "tx"); 162 #endif 163 164 #ifdef UDP_CSUM_COUNTERS 165 #include <sys/device.h> 166 167 #if defined(INET) 168 struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 169 NULL, "udp", "hwcsum bad"); 170 struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 171 NULL, "udp", "hwcsum ok"); 172 struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 173 NULL, "udp", "hwcsum data"); 174 struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 175 NULL, "udp", "swcsum"); 176 177 EVCNT_ATTACH_STATIC(udp_hwcsum_bad); 178 EVCNT_ATTACH_STATIC(udp_hwcsum_ok); 179 EVCNT_ATTACH_STATIC(udp_hwcsum_data); 180 EVCNT_ATTACH_STATIC(udp_swcsum); 181 #endif /* defined(INET) */ 182 183 #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ 184 #else 185 #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */ 186 #endif /* UDP_CSUM_COUNTERS */ 187 188 static void sysctl_net_inet_udp_setup(struct sysctllog **); 189 190 static int 191 do_udpinit(void) 192 { 193 194 in_pcbinit(&udbtable, udbhashsize, udbhashsize); 195 udpstat_percpu = percpu_alloc(sizeof(uint64_t) * UDP_NSTATS); 196 197 MOWNER_ATTACH(&udp_tx_mowner); 198 MOWNER_ATTACH(&udp_rx_mowner); 199 MOWNER_ATTACH(&udp_mowner); 200 201 return 0; 202 } 203 204 void 205 udp_init_common(void) 206 { 207 static ONCE_DECL(doudpinit); 208 209 RUN_ONCE(&doudpinit, do_udpinit); 210 } 211 212 void 213 udp_init(void) 214 { 215 216 sysctl_net_inet_udp_setup(NULL); 217 218 udp_init_common(); 219 } 220 221 /* 222 * Checksum extended UDP header and data. 223 */ 224 int 225 udp_input_checksum(int af, struct mbuf *m, const struct udphdr *uh, 226 int iphlen, int len) 227 { 228 229 switch (af) { 230 #ifdef INET 231 case AF_INET: 232 return udp4_input_checksum(m, uh, iphlen, len); 233 #endif 234 #ifdef INET6 235 case AF_INET6: 236 return udp6_input_checksum(m, uh, iphlen, len); 237 #endif 238 } 239 #ifdef DIAGNOSTIC 240 panic("udp_input_checksum: unknown af %d", af); 241 #endif 242 /* NOTREACHED */ 243 return -1; 244 } 245 246 #ifdef INET 247 248 /* 249 * Checksum extended UDP header and data. 250 */ 251 static int 252 udp4_input_checksum(struct mbuf *m, const struct udphdr *uh, 253 int iphlen, int len) 254 { 255 256 /* 257 * XXX it's better to record and check if this mbuf is 258 * already checked. 259 */ 260 261 if (uh->uh_sum == 0) 262 return 0; 263 264 switch (m->m_pkthdr.csum_flags & 265 ((m_get_rcvif_NOMPSAFE(m)->if_csum_flags_rx & M_CSUM_UDPv4) | 266 M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { 267 case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: 268 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); 269 goto badcsum; 270 271 case M_CSUM_UDPv4|M_CSUM_DATA: { 272 u_int32_t hw_csum = m->m_pkthdr.csum_data; 273 274 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); 275 if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR) { 276 const struct ip *ip = 277 mtod(m, const struct ip *); 278 279 hw_csum = in_cksum_phdr(ip->ip_src.s_addr, 280 ip->ip_dst.s_addr, 281 htons(hw_csum + len + IPPROTO_UDP)); 282 } 283 if ((hw_csum ^ 0xffff) != 0) 284 goto badcsum; 285 break; 286 } 287 288 case M_CSUM_UDPv4: 289 /* Checksum was okay. */ 290 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); 291 break; 292 293 default: 294 /* 295 * Need to compute it ourselves. Maybe skip checksum 296 * on loopback interfaces. 297 */ 298 if (__predict_true(!(m_get_rcvif_NOMPSAFE(m)->if_flags & 299 IFF_LOOPBACK) || 300 udp_do_loopback_cksum)) { 301 UDP_CSUM_COUNTER_INCR(&udp_swcsum); 302 if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) 303 goto badcsum; 304 } 305 break; 306 } 307 308 return 0; 309 310 badcsum: 311 UDP_STATINC(UDP_STAT_BADSUM); 312 return -1; 313 } 314 315 void 316 udp_input(struct mbuf *m, ...) 317 { 318 va_list ap; 319 struct sockaddr_in src, dst; 320 struct ip *ip; 321 struct udphdr *uh; 322 int iphlen; 323 int len; 324 int n; 325 u_int16_t ip_len; 326 327 va_start(ap, m); 328 iphlen = va_arg(ap, int); 329 (void)va_arg(ap, int); /* ignore value, advance ap */ 330 va_end(ap); 331 332 MCLAIM(m, &udp_rx_mowner); 333 UDP_STATINC(UDP_STAT_IPACKETS); 334 335 /* 336 * Get IP and UDP header together in first mbuf. 337 */ 338 ip = mtod(m, struct ip *); 339 M_REGION_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr)); 340 if (uh == NULL) { 341 UDP_STATINC(UDP_STAT_HDROPS); 342 return; 343 } 344 345 /* 346 * Enforce alignment requirements that are violated in 347 * some cases, see kern/50766 for details. 348 */ 349 if (UDP_HDR_ALIGNED_P(uh) == 0) { 350 m = m_copyup(m, iphlen + sizeof(struct udphdr), 0); 351 if (m == NULL) { 352 UDP_STATINC(UDP_STAT_HDROPS); 353 return; 354 } 355 ip = mtod(m, struct ip *); 356 uh = (struct udphdr *)(mtod(m, char *) + iphlen); 357 } 358 KASSERT(UDP_HDR_ALIGNED_P(uh)); 359 360 /* destination port of 0 is illegal, based on RFC768. */ 361 if (uh->uh_dport == 0) 362 goto bad; 363 364 /* 365 * Make mbuf data length reflect UDP length. 366 * If not enough data to reflect UDP length, drop. 367 */ 368 ip_len = ntohs(ip->ip_len); 369 len = ntohs((u_int16_t)uh->uh_ulen); 370 if (len < sizeof(struct udphdr)) { 371 UDP_STATINC(UDP_STAT_BADLEN); 372 goto bad; 373 } 374 if (ip_len != iphlen + len) { 375 if (ip_len < iphlen + len) { 376 UDP_STATINC(UDP_STAT_BADLEN); 377 goto bad; 378 } 379 m_adj(m, iphlen + len - ip_len); 380 } 381 382 /* 383 * Checksum extended UDP header and data. 384 */ 385 if (udp4_input_checksum(m, uh, iphlen, len)) 386 goto badcsum; 387 388 /* construct source and dst sockaddrs. */ 389 sockaddr_in_init(&src, &ip->ip_src, uh->uh_sport); 390 sockaddr_in_init(&dst, &ip->ip_dst, uh->uh_dport); 391 392 if ((n = udp4_realinput(&src, &dst, &m, iphlen)) == -1) { 393 UDP_STATINC(UDP_STAT_HDROPS); 394 return; 395 } 396 if (m == NULL) { 397 /* 398 * packet has been processed by ESP stuff - 399 * e.g. dropped NAT-T-keep-alive-packet ... 400 */ 401 return; 402 } 403 404 ip = mtod(m, struct ip *); 405 M_REGION_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr)); 406 if (uh == NULL) { 407 UDP_STATINC(UDP_STAT_HDROPS); 408 return; 409 } 410 /* XXX Re-enforce alignment? */ 411 412 #ifdef INET6 413 if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) { 414 struct sockaddr_in6 src6, dst6; 415 416 memset(&src6, 0, sizeof(src6)); 417 src6.sin6_family = AF_INET6; 418 src6.sin6_len = sizeof(struct sockaddr_in6); 419 in6_in_2_v4mapin6(&ip->ip_src, &src6.sin6_addr); 420 src6.sin6_port = uh->uh_sport; 421 memset(&dst6, 0, sizeof(dst6)); 422 dst6.sin6_family = AF_INET6; 423 dst6.sin6_len = sizeof(struct sockaddr_in6); 424 in6_in_2_v4mapin6(&ip->ip_dst, &dst6.sin6_addr); 425 dst6.sin6_port = uh->uh_dport; 426 427 n += udp6_realinput(AF_INET, &src6, &dst6, m, iphlen); 428 } 429 #endif 430 431 if (n == 0) { 432 if (m->m_flags & (M_BCAST | M_MCAST)) { 433 UDP_STATINC(UDP_STAT_NOPORTBCAST); 434 goto bad; 435 } 436 UDP_STATINC(UDP_STAT_NOPORT); 437 #ifdef IPKDB 438 if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport, 439 m, iphlen + sizeof(struct udphdr), 440 m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) { 441 /* 442 * It was a debugger connect packet, 443 * just drop it now 444 */ 445 goto bad; 446 } 447 #endif 448 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0); 449 m = NULL; 450 } 451 452 bad: 453 if (m) 454 m_freem(m); 455 return; 456 457 badcsum: 458 m_freem(m); 459 } 460 #endif 461 462 #ifdef INET 463 static void 464 udp4_sendup(struct mbuf *m, int off /* offset of data portion */, 465 struct sockaddr *src, struct socket *so) 466 { 467 struct mbuf *opts = NULL; 468 struct mbuf *n; 469 struct inpcb *inp; 470 471 KASSERT(so != NULL); 472 KASSERT(so->so_proto->pr_domain->dom_family == AF_INET); 473 inp = sotoinpcb(so); 474 KASSERT(inp != NULL); 475 476 #if defined(IPSEC) 477 if (ipsec_used && ipsec_in_reject(m, inp)) { 478 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) 479 icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT, 480 0, 0); 481 return; 482 } 483 #endif 484 485 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { 486 if (inp->inp_flags & INP_CONTROLOPTS || 487 SOOPT_TIMESTAMP(so->so_options)) { 488 struct ip *ip = mtod(n, struct ip *); 489 ip_savecontrol(inp, &opts, ip, n); 490 } 491 492 m_adj(n, off); 493 if (sbappendaddr(&so->so_rcv, src, n, opts) == 0) { 494 m_freem(n); 495 if (opts) 496 m_freem(opts); 497 UDP_STATINC(UDP_STAT_FULLSOCK); 498 soroverflow(so); 499 } else 500 sorwakeup(so); 501 } 502 } 503 #endif 504 505 #ifdef INET 506 static int 507 udp4_realinput(struct sockaddr_in *src, struct sockaddr_in *dst, 508 struct mbuf **mp, int off /* offset of udphdr */) 509 { 510 u_int16_t *sport, *dport; 511 int rcvcnt; 512 struct in_addr *src4, *dst4; 513 struct inpcb_hdr *inph; 514 struct inpcb *inp; 515 struct mbuf *m = *mp; 516 517 rcvcnt = 0; 518 off += sizeof(struct udphdr); /* now, offset of payload */ 519 520 if (src->sin_family != AF_INET || dst->sin_family != AF_INET) 521 goto bad; 522 523 src4 = &src->sin_addr; 524 sport = &src->sin_port; 525 dst4 = &dst->sin_addr; 526 dport = &dst->sin_port; 527 528 if (IN_MULTICAST(dst4->s_addr) || 529 in_broadcast(*dst4, m_get_rcvif_NOMPSAFE(m))) { 530 /* 531 * Deliver a multicast or broadcast datagram to *all* sockets 532 * for which the local and remote addresses and ports match 533 * those of the incoming datagram. This allows more than 534 * one process to receive multi/broadcasts on the same port. 535 * (This really ought to be done for unicast datagrams as 536 * well, but that would cause problems with existing 537 * applications that open both address-specific sockets and 538 * a wildcard socket listening to the same port -- they would 539 * end up receiving duplicates of every unicast datagram. 540 * Those applications open the multiple sockets to overcome an 541 * inadequacy of the UDP socket interface, but for backwards 542 * compatibility we avoid the problem here rather than 543 * fixing the interface. Maybe 4.5BSD will remedy this?) 544 */ 545 546 /* 547 * KAME note: traditionally we dropped udpiphdr from mbuf here. 548 * we need udpiphdr for IPsec processing so we do that later. 549 */ 550 /* 551 * Locate pcb(s) for datagram. 552 */ 553 TAILQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) { 554 inp = (struct inpcb *)inph; 555 if (inp->inp_af != AF_INET) 556 continue; 557 558 if (inp->inp_lport != *dport) 559 continue; 560 if (!in_nullhost(inp->inp_laddr)) { 561 if (!in_hosteq(inp->inp_laddr, *dst4)) 562 continue; 563 } 564 if (!in_nullhost(inp->inp_faddr)) { 565 if (!in_hosteq(inp->inp_faddr, *src4) || 566 inp->inp_fport != *sport) 567 continue; 568 } 569 570 udp4_sendup(m, off, (struct sockaddr *)src, 571 inp->inp_socket); 572 rcvcnt++; 573 574 /* 575 * Don't look for additional matches if this one does 576 * not have either the SO_REUSEPORT or SO_REUSEADDR 577 * socket options set. This heuristic avoids searching 578 * through all pcbs in the common case of a non-shared 579 * port. It assumes that an application will never 580 * clear these options after setting them. 581 */ 582 if ((inp->inp_socket->so_options & 583 (SO_REUSEPORT|SO_REUSEADDR)) == 0) 584 break; 585 } 586 } else { 587 /* 588 * Locate pcb for datagram. 589 */ 590 inp = in_pcblookup_connect(&udbtable, *src4, *sport, *dst4, 591 *dport, 0); 592 if (inp == 0) { 593 UDP_STATINC(UDP_STAT_PCBHASHMISS); 594 inp = in_pcblookup_bind(&udbtable, *dst4, *dport); 595 if (inp == 0) 596 return rcvcnt; 597 } 598 599 #ifdef IPSEC 600 /* Handle ESP over UDP */ 601 if (inp->inp_flags & INP_ESPINUDP_ALL) { 602 switch (udp4_espinudp(mp, off, inp->inp_socket)) { 603 case -1: /* Error, m was freed */ 604 rcvcnt = -1; 605 goto bad; 606 607 case 1: /* ESP over UDP */ 608 rcvcnt++; 609 goto bad; 610 611 case 0: /* plain UDP */ 612 default: /* Unexpected */ 613 /* 614 * Normal UDP processing will take place, 615 * m may have changed. 616 */ 617 m = *mp; 618 break; 619 } 620 } 621 #endif 622 623 /* 624 * Check the minimum TTL for socket. 625 */ 626 if (mtod(m, struct ip *)->ip_ttl < inp->inp_ip_minttl) 627 goto bad; 628 629 udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket); 630 rcvcnt++; 631 } 632 633 bad: 634 return rcvcnt; 635 } 636 #endif 637 638 #ifdef INET 639 /* 640 * Notify a udp user of an asynchronous error; 641 * just wake up so that he can collect error status. 642 */ 643 static void 644 udp_notify(struct inpcb *inp, int errno) 645 { 646 inp->inp_socket->so_error = errno; 647 sorwakeup(inp->inp_socket); 648 sowwakeup(inp->inp_socket); 649 } 650 651 void * 652 udp_ctlinput(int cmd, const struct sockaddr *sa, void *v) 653 { 654 struct ip *ip = v; 655 struct udphdr *uh; 656 void (*notify)(struct inpcb *, int) = udp_notify; 657 int errno; 658 659 if (sa->sa_family != AF_INET || 660 sa->sa_len != sizeof(struct sockaddr_in)) 661 return NULL; 662 if ((unsigned)cmd >= PRC_NCMDS) 663 return NULL; 664 665 errno = inetctlerrmap[cmd]; 666 if (PRC_IS_REDIRECT(cmd)) { 667 notify = in_rtchange; 668 ip = NULL; 669 } else if (cmd == PRC_HOSTDEAD) { 670 ip = NULL; 671 } else if (errno == 0) { 672 return NULL; 673 } 674 675 if (ip) { 676 uh = (struct udphdr *)((char *)ip + (ip->ip_hl << 2)); 677 in_pcbnotify(&udbtable, satocsin(sa)->sin_addr, uh->uh_dport, 678 ip->ip_src, uh->uh_sport, errno, notify); 679 /* XXX mapped address case */ 680 } else { 681 in_pcbnotifyall(&udbtable, satocsin(sa)->sin_addr, errno, 682 notify); 683 } 684 685 return NULL; 686 } 687 688 int 689 udp_ctloutput(int op, struct socket *so, struct sockopt *sopt) 690 { 691 int s; 692 int error = 0; 693 struct inpcb *inp; 694 int family; 695 int optval; 696 697 family = so->so_proto->pr_domain->dom_family; 698 699 s = splsoftnet(); 700 switch (family) { 701 #ifdef INET 702 case PF_INET: 703 if (sopt->sopt_level != IPPROTO_UDP) { 704 error = ip_ctloutput(op, so, sopt); 705 goto end; 706 } 707 break; 708 #endif 709 #ifdef INET6 710 case PF_INET6: 711 if (sopt->sopt_level != IPPROTO_UDP) { 712 error = ip6_ctloutput(op, so, sopt); 713 goto end; 714 } 715 break; 716 #endif 717 default: 718 error = EAFNOSUPPORT; 719 goto end; 720 } 721 722 723 switch (op) { 724 case PRCO_SETOPT: 725 inp = sotoinpcb(so); 726 727 switch (sopt->sopt_name) { 728 case UDP_ENCAP: 729 error = sockopt_getint(sopt, &optval); 730 if (error) 731 break; 732 733 switch(optval) { 734 case 0: 735 inp->inp_flags &= ~INP_ESPINUDP_ALL; 736 break; 737 738 case UDP_ENCAP_ESPINUDP: 739 inp->inp_flags &= ~INP_ESPINUDP_ALL; 740 inp->inp_flags |= INP_ESPINUDP; 741 break; 742 743 case UDP_ENCAP_ESPINUDP_NON_IKE: 744 inp->inp_flags &= ~INP_ESPINUDP_ALL; 745 inp->inp_flags |= INP_ESPINUDP_NON_IKE; 746 break; 747 default: 748 error = EINVAL; 749 break; 750 } 751 break; 752 753 default: 754 error = ENOPROTOOPT; 755 break; 756 } 757 break; 758 759 default: 760 error = EINVAL; 761 break; 762 } 763 764 end: 765 splx(s); 766 return error; 767 } 768 769 int 770 udp_output(struct mbuf *m, struct inpcb *inp, struct mbuf *control, 771 struct lwp *l) 772 { 773 struct udpiphdr *ui; 774 struct route *ro; 775 struct ip_pktopts pktopts; 776 kauth_cred_t cred; 777 int len = m->m_pkthdr.len; 778 int error, flags = 0; 779 780 MCLAIM(m, &udp_tx_mowner); 781 782 /* 783 * Calculate data length and get a mbuf 784 * for UDP and IP headers. 785 */ 786 M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT); 787 if (m == NULL) { 788 error = ENOBUFS; 789 goto release; 790 } 791 792 /* 793 * Compute the packet length of the IP header, and 794 * punt if the length looks bogus. 795 */ 796 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) { 797 error = EMSGSIZE; 798 goto release; 799 } 800 801 if (l == NULL) 802 cred = NULL; 803 else 804 cred = l->l_cred; 805 806 /* Setup IP outgoing packet options */ 807 memset(&pktopts, 0, sizeof(pktopts)); 808 error = ip_setpktopts(control, &pktopts, &flags, inp, cred); 809 if (error != 0) 810 goto release; 811 812 if (control != NULL) { 813 m_freem(control); 814 control = NULL; 815 } 816 817 /* 818 * Fill in mbuf with extended UDP header 819 * and addresses and length put into network format. 820 */ 821 ui = mtod(m, struct udpiphdr *); 822 ui->ui_pr = IPPROTO_UDP; 823 ui->ui_src = pktopts.ippo_laddr.sin_addr; 824 ui->ui_dst = inp->inp_faddr; 825 ui->ui_sport = inp->inp_lport; 826 ui->ui_dport = inp->inp_fport; 827 ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr)); 828 829 ro = &inp->inp_route; 830 831 /* 832 * Set up checksum and output datagram. 833 */ 834 if (udpcksum) { 835 /* 836 * XXX Cache pseudo-header checksum part for 837 * XXX "connected" UDP sockets. 838 */ 839 ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr, 840 ui->ui_dst.s_addr, htons((u_int16_t)len + 841 sizeof(struct udphdr) + IPPROTO_UDP)); 842 m->m_pkthdr.csum_flags = M_CSUM_UDPv4; 843 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); 844 } else 845 ui->ui_sum = 0; 846 847 ((struct ip *)ui)->ip_len = htons(sizeof(struct udpiphdr) + len); 848 ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ 849 ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ 850 UDP_STATINC(UDP_STAT_OPACKETS); 851 852 flags |= inp->inp_socket->so_options & (SO_DONTROUTE|SO_BROADCAST); 853 return ip_output(m, inp->inp_options, ro, flags, pktopts.ippo_imo, inp); 854 855 release: 856 if (control != NULL) 857 m_freem(control); 858 m_freem(m); 859 return error; 860 } 861 862 static int 863 udp_attach(struct socket *so, int proto) 864 { 865 struct inpcb *inp; 866 int error; 867 868 KASSERT(sotoinpcb(so) == NULL); 869 870 /* Assign the lock (must happen even if we will error out). */ 871 sosetlock(so); 872 873 #ifdef MBUFTRACE 874 so->so_mowner = &udp_mowner; 875 so->so_rcv.sb_mowner = &udp_rx_mowner; 876 so->so_snd.sb_mowner = &udp_tx_mowner; 877 #endif 878 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 879 error = soreserve(so, udp_sendspace, udp_recvspace); 880 if (error) { 881 return error; 882 } 883 } 884 885 error = in_pcballoc(so, &udbtable); 886 if (error) { 887 return error; 888 } 889 inp = sotoinpcb(so); 890 inp->inp_ip.ip_ttl = ip_defttl; 891 KASSERT(solocked(so)); 892 893 return error; 894 } 895 896 static void 897 udp_detach(struct socket *so) 898 { 899 struct inpcb *inp; 900 901 KASSERT(solocked(so)); 902 inp = sotoinpcb(so); 903 KASSERT(inp != NULL); 904 in_pcbdetach(inp); 905 } 906 907 static int 908 udp_accept(struct socket *so, struct sockaddr *nam) 909 { 910 KASSERT(solocked(so)); 911 912 panic("udp_accept"); 913 914 return EOPNOTSUPP; 915 } 916 917 static int 918 udp_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 919 { 920 struct inpcb *inp = sotoinpcb(so); 921 struct sockaddr_in *sin = (struct sockaddr_in *)nam; 922 int error = 0; 923 int s; 924 925 KASSERT(solocked(so)); 926 KASSERT(inp != NULL); 927 KASSERT(nam != NULL); 928 929 s = splsoftnet(); 930 error = in_pcbbind(inp, sin, l); 931 splx(s); 932 933 return error; 934 } 935 936 static int 937 udp_listen(struct socket *so, struct lwp *l) 938 { 939 KASSERT(solocked(so)); 940 941 return EOPNOTSUPP; 942 } 943 944 static int 945 udp_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 946 { 947 struct inpcb *inp = sotoinpcb(so); 948 int error = 0; 949 int s; 950 951 KASSERT(solocked(so)); 952 KASSERT(inp != NULL); 953 KASSERT(nam != NULL); 954 955 s = splsoftnet(); 956 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); 957 if (! error) 958 soisconnected(so); 959 splx(s); 960 return error; 961 } 962 963 static int 964 udp_connect2(struct socket *so, struct socket *so2) 965 { 966 KASSERT(solocked(so)); 967 968 return EOPNOTSUPP; 969 } 970 971 static int 972 udp_disconnect(struct socket *so) 973 { 974 struct inpcb *inp = sotoinpcb(so); 975 int s; 976 977 KASSERT(solocked(so)); 978 KASSERT(inp != NULL); 979 980 s = splsoftnet(); 981 /*soisdisconnected(so);*/ 982 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 983 in_pcbdisconnect(inp); 984 inp->inp_laddr = zeroin_addr; /* XXX */ 985 in_pcbstate(inp, INP_BOUND); /* XXX */ 986 splx(s); 987 988 return 0; 989 } 990 991 static int 992 udp_shutdown(struct socket *so) 993 { 994 int s; 995 996 KASSERT(solocked(so)); 997 998 s = splsoftnet(); 999 socantsendmore(so); 1000 splx(s); 1001 1002 return 0; 1003 } 1004 1005 static int 1006 udp_abort(struct socket *so) 1007 { 1008 KASSERT(solocked(so)); 1009 1010 panic("udp_abort"); 1011 1012 return EOPNOTSUPP; 1013 } 1014 1015 static int 1016 udp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1017 { 1018 return in_control(so, cmd, nam, ifp); 1019 } 1020 1021 static int 1022 udp_stat(struct socket *so, struct stat *ub) 1023 { 1024 KASSERT(solocked(so)); 1025 1026 /* stat: don't bother with a blocksize. */ 1027 return 0; 1028 } 1029 1030 static int 1031 udp_peeraddr(struct socket *so, struct sockaddr *nam) 1032 { 1033 int s; 1034 1035 KASSERT(solocked(so)); 1036 KASSERT(sotoinpcb(so) != NULL); 1037 KASSERT(nam != NULL); 1038 1039 s = splsoftnet(); 1040 in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam); 1041 splx(s); 1042 1043 return 0; 1044 } 1045 1046 static int 1047 udp_sockaddr(struct socket *so, struct sockaddr *nam) 1048 { 1049 int s; 1050 1051 KASSERT(solocked(so)); 1052 KASSERT(sotoinpcb(so) != NULL); 1053 KASSERT(nam != NULL); 1054 1055 s = splsoftnet(); 1056 in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam); 1057 splx(s); 1058 1059 return 0; 1060 } 1061 1062 static int 1063 udp_rcvd(struct socket *so, int flags, struct lwp *l) 1064 { 1065 KASSERT(solocked(so)); 1066 1067 return EOPNOTSUPP; 1068 } 1069 1070 static int 1071 udp_recvoob(struct socket *so, struct mbuf *m, int flags) 1072 { 1073 KASSERT(solocked(so)); 1074 1075 return EOPNOTSUPP; 1076 } 1077 1078 static int 1079 udp_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 1080 struct mbuf *control, struct lwp *l) 1081 { 1082 struct inpcb *inp = sotoinpcb(so); 1083 int error = 0; 1084 struct in_addr laddr; /* XXX */ 1085 int s; 1086 1087 KASSERT(solocked(so)); 1088 KASSERT(inp != NULL); 1089 KASSERT(m != NULL); 1090 1091 memset(&laddr, 0, sizeof laddr); 1092 1093 s = splsoftnet(); 1094 if (nam) { 1095 laddr = inp->inp_laddr; /* XXX */ 1096 if ((so->so_state & SS_ISCONNECTED) != 0) { 1097 error = EISCONN; 1098 goto die; 1099 } 1100 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); 1101 if (error) 1102 goto die; 1103 } else { 1104 if ((so->so_state & SS_ISCONNECTED) == 0) { 1105 error = ENOTCONN; 1106 goto die; 1107 } 1108 } 1109 error = udp_output(m, inp, control, l); 1110 m = NULL; 1111 control = NULL; 1112 if (nam) { 1113 in_pcbdisconnect(inp); 1114 inp->inp_laddr = laddr; /* XXX */ 1115 in_pcbstate(inp, INP_BOUND); /* XXX */ 1116 } 1117 die: 1118 if (m != NULL) 1119 m_freem(m); 1120 if (control != NULL) 1121 m_freem(control); 1122 1123 splx(s); 1124 return error; 1125 } 1126 1127 static int 1128 udp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 1129 { 1130 KASSERT(solocked(so)); 1131 1132 m_freem(m); 1133 m_freem(control); 1134 1135 return EOPNOTSUPP; 1136 } 1137 1138 static int 1139 udp_purgeif(struct socket *so, struct ifnet *ifp) 1140 { 1141 int s; 1142 1143 s = splsoftnet(); 1144 mutex_enter(softnet_lock); 1145 in_pcbpurgeif0(&udbtable, ifp); 1146 #ifdef NET_MPSAFE 1147 mutex_exit(softnet_lock); 1148 #endif 1149 in_purgeif(ifp); 1150 #ifdef NET_MPSAFE 1151 mutex_enter(softnet_lock); 1152 #endif 1153 in_pcbpurgeif(&udbtable, ifp); 1154 mutex_exit(softnet_lock); 1155 splx(s); 1156 1157 return 0; 1158 } 1159 1160 static int 1161 sysctl_net_inet_udp_stats(SYSCTLFN_ARGS) 1162 { 1163 1164 return (NETSTAT_SYSCTL(udpstat_percpu, UDP_NSTATS)); 1165 } 1166 1167 /* 1168 * Sysctl for udp variables. 1169 */ 1170 static void 1171 sysctl_net_inet_udp_setup(struct sysctllog **clog) 1172 { 1173 1174 sysctl_createv(clog, 0, NULL, NULL, 1175 CTLFLAG_PERMANENT, 1176 CTLTYPE_NODE, "inet", NULL, 1177 NULL, 0, NULL, 0, 1178 CTL_NET, PF_INET, CTL_EOL); 1179 sysctl_createv(clog, 0, NULL, NULL, 1180 CTLFLAG_PERMANENT, 1181 CTLTYPE_NODE, "udp", 1182 SYSCTL_DESCR("UDPv4 related settings"), 1183 NULL, 0, NULL, 0, 1184 CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL); 1185 1186 sysctl_createv(clog, 0, NULL, NULL, 1187 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1188 CTLTYPE_INT, "checksum", 1189 SYSCTL_DESCR("Compute UDP checksums"), 1190 NULL, 0, &udpcksum, 0, 1191 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM, 1192 CTL_EOL); 1193 sysctl_createv(clog, 0, NULL, NULL, 1194 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1195 CTLTYPE_INT, "sendspace", 1196 SYSCTL_DESCR("Default UDP send buffer size"), 1197 NULL, 0, &udp_sendspace, 0, 1198 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE, 1199 CTL_EOL); 1200 sysctl_createv(clog, 0, NULL, NULL, 1201 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1202 CTLTYPE_INT, "recvspace", 1203 SYSCTL_DESCR("Default UDP receive buffer size"), 1204 NULL, 0, &udp_recvspace, 0, 1205 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE, 1206 CTL_EOL); 1207 sysctl_createv(clog, 0, NULL, NULL, 1208 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1209 CTLTYPE_INT, "do_loopback_cksum", 1210 SYSCTL_DESCR("Perform UDP checksum on loopback"), 1211 NULL, 0, &udp_do_loopback_cksum, 0, 1212 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM, 1213 CTL_EOL); 1214 sysctl_createv(clog, 0, NULL, NULL, 1215 CTLFLAG_PERMANENT, 1216 CTLTYPE_STRUCT, "pcblist", 1217 SYSCTL_DESCR("UDP protocol control block list"), 1218 sysctl_inpcblist, 0, &udbtable, 0, 1219 CTL_NET, PF_INET, IPPROTO_UDP, CTL_CREATE, 1220 CTL_EOL); 1221 sysctl_createv(clog, 0, NULL, NULL, 1222 CTLFLAG_PERMANENT, 1223 CTLTYPE_STRUCT, "stats", 1224 SYSCTL_DESCR("UDP statistics"), 1225 sysctl_net_inet_udp_stats, 0, NULL, 0, 1226 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_STATS, 1227 CTL_EOL); 1228 } 1229 #endif 1230 1231 void 1232 udp_statinc(u_int stat) 1233 { 1234 1235 KASSERT(stat < UDP_NSTATS); 1236 UDP_STATINC(stat); 1237 } 1238 1239 #if defined(INET) && defined(IPSEC) 1240 /* 1241 * Handle ESP-in-UDP packets (RFC3948). 1242 * 1243 * We need to distinguish between ESP packets and IKE packets. We do so by 1244 * looking at the Non-ESP and Non-IKE markers. 1245 * 1246 * If IKE, we process the UDP packet as usual. Otherwise, ESP, we invoke 1247 * IPsec. 1248 * 1249 * Returns: 1250 * 1 if the packet was processed 1251 * 0 if normal UDP processing should take place 1252 * -1 if an error occurred and m was freed 1253 */ 1254 static int 1255 udp4_espinudp(struct mbuf **mp, int off, struct socket *so) 1256 { 1257 size_t len; 1258 uint8_t *data; 1259 struct inpcb *inp; 1260 size_t skip = 0; 1261 size_t minlen; 1262 size_t iphdrlen; 1263 struct ip *ip; 1264 struct m_tag *tag; 1265 struct udphdr *udphdr; 1266 u_int16_t sport, dport; 1267 struct mbuf *m = *mp; 1268 1269 /* 1270 * Collapse the mbuf chain if the first mbuf is too short. 1271 * The longest case is: UDP + max(Non-ESP, Non-IKE) + ESP. 1272 */ 1273 minlen = off + 2 * sizeof(uint32_t) + sizeof(struct esp); 1274 if (minlen > m->m_pkthdr.len) 1275 minlen = m->m_pkthdr.len; 1276 1277 if (m->m_len < minlen) { 1278 if ((*mp = m_pullup(m, minlen)) == NULL) { 1279 return -1; 1280 } 1281 m = *mp; 1282 } 1283 1284 len = m->m_len - off; 1285 data = mtod(m, uint8_t *) + off; 1286 inp = sotoinpcb(so); 1287 1288 /* Ignore keepalive packets. */ 1289 if ((len == 1) && (*data == 0xff)) { 1290 m_freem(m); 1291 *mp = NULL; /* avoid any further processing by caller */ 1292 return 1; 1293 } 1294 1295 /* Handle Non-ESP marker (32bit). If zero, then IKE. */ 1296 if (inp->inp_flags & INP_ESPINUDP) { 1297 uint32_t *marker = (uint32_t *)data; 1298 1299 if (len <= sizeof(uint32_t)) 1300 return 0; 1301 if (marker[0] == 0) 1302 return 0; 1303 1304 skip = sizeof(struct udphdr); 1305 } 1306 1307 /* Handle Non-IKE marker (64bit). If non-zero, then IKE. */ 1308 if (inp->inp_flags & INP_ESPINUDP_NON_IKE) { 1309 uint32_t *marker = (uint32_t *)data; 1310 1311 if (len <= 2 * sizeof(uint32_t) + sizeof(struct esp)) 1312 return 0; 1313 if (marker[0] != 0 || marker[1] != 0) 1314 return 0; 1315 1316 skip = sizeof(struct udphdr) + 2 * sizeof(uint32_t); 1317 } 1318 1319 /* 1320 * Get the UDP ports. They are handled in network order 1321 * everywhere in the IPSEC_NAT_T code. 1322 */ 1323 udphdr = (struct udphdr *)((char *)data - skip); 1324 sport = udphdr->uh_sport; 1325 dport = udphdr->uh_dport; 1326 1327 /* 1328 * Remove the UDP header, plus a possible marker. IP header 1329 * length is iphdrlen. 1330 * 1331 * Before: 1332 * <--- off ---> 1333 * +----+------+-----+ 1334 * | IP | UDP | ESP | 1335 * +----+------+-----+ 1336 * <-skip-> 1337 * After: 1338 * +----+-----+ 1339 * | IP | ESP | 1340 * +----+-----+ 1341 * <-skip-> 1342 */ 1343 iphdrlen = off - sizeof(struct udphdr); 1344 memmove(mtod(m, char *) + skip, mtod(m, void *), iphdrlen); 1345 m_adj(m, skip); 1346 1347 ip = mtod(m, struct ip *); 1348 ip->ip_len = htons(ntohs(ip->ip_len) - skip); 1349 ip->ip_p = IPPROTO_ESP; 1350 1351 /* 1352 * We have modified the packet - it is now ESP, so we should not 1353 * return to UDP processing. 1354 * 1355 * Add a PACKET_TAG_IPSEC_NAT_T_PORTS tag to remember the source 1356 * UDP port. This is required if we want to select the right SPD 1357 * for multiple hosts behind same NAT. 1358 */ 1359 if ((tag = m_tag_get(PACKET_TAG_IPSEC_NAT_T_PORTS, 1360 sizeof(sport) + sizeof(dport), M_DONTWAIT)) == NULL) { 1361 m_freem(m); 1362 return -1; 1363 } 1364 ((u_int16_t *)(tag + 1))[0] = sport; 1365 ((u_int16_t *)(tag + 1))[1] = dport; 1366 m_tag_prepend(m, tag); 1367 1368 if (ipsec_used) 1369 ipsec4_common_input(m, iphdrlen, IPPROTO_ESP); 1370 else 1371 m_freem(m); 1372 1373 /* We handled it, it shouldn't be handled by UDP */ 1374 *mp = NULL; /* avoid free by caller ... */ 1375 return 1; 1376 } 1377 #endif 1378 1379 PR_WRAP_USRREQS(udp) 1380 #define udp_attach udp_attach_wrapper 1381 #define udp_detach udp_detach_wrapper 1382 #define udp_accept udp_accept_wrapper 1383 #define udp_bind udp_bind_wrapper 1384 #define udp_listen udp_listen_wrapper 1385 #define udp_connect udp_connect_wrapper 1386 #define udp_connect2 udp_connect2_wrapper 1387 #define udp_disconnect udp_disconnect_wrapper 1388 #define udp_shutdown udp_shutdown_wrapper 1389 #define udp_abort udp_abort_wrapper 1390 #define udp_ioctl udp_ioctl_wrapper 1391 #define udp_stat udp_stat_wrapper 1392 #define udp_peeraddr udp_peeraddr_wrapper 1393 #define udp_sockaddr udp_sockaddr_wrapper 1394 #define udp_rcvd udp_rcvd_wrapper 1395 #define udp_recvoob udp_recvoob_wrapper 1396 #define udp_send udp_send_wrapper 1397 #define udp_sendoob udp_sendoob_wrapper 1398 #define udp_purgeif udp_purgeif_wrapper 1399 1400 const struct pr_usrreqs udp_usrreqs = { 1401 .pr_attach = udp_attach, 1402 .pr_detach = udp_detach, 1403 .pr_accept = udp_accept, 1404 .pr_bind = udp_bind, 1405 .pr_listen = udp_listen, 1406 .pr_connect = udp_connect, 1407 .pr_connect2 = udp_connect2, 1408 .pr_disconnect = udp_disconnect, 1409 .pr_shutdown = udp_shutdown, 1410 .pr_abort = udp_abort, 1411 .pr_ioctl = udp_ioctl, 1412 .pr_stat = udp_stat, 1413 .pr_peeraddr = udp_peeraddr, 1414 .pr_sockaddr = udp_sockaddr, 1415 .pr_rcvd = udp_rcvd, 1416 .pr_recvoob = udp_recvoob, 1417 .pr_send = udp_send, 1418 .pr_sendoob = udp_sendoob, 1419 .pr_purgeif = udp_purgeif, 1420 }; 1421
Indexes created Fri Sep 26 20:09:58 GMT 2025