udp_usrreq.c revision 1.187.2.3
1 /* $NetBSD: udp_usrreq.c,v 1.187.2.3 2017/12/03 11:39:04 jdolecek 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 1.187.2.3 2017/12/03 11:39:04 jdolecek 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/ipsec_private.h> 123 #include <netipsec/esp.h> 124 #ifdef INET6 125 #include <netipsec/ipsec6.h> 126 #endif 127 #endif /* IPSEC */ 128 129 #ifdef IPKDB 130 #include <ipkdb/ipkdb.h> 131 #endif 132 133 int udpcksum = 1; 134 int udp_do_loopback_cksum = 0; 135 136 struct inpcbtable udbtable; 137 138 percpu_t *udpstat_percpu; 139 140 #ifdef INET 141 #ifdef IPSEC 142 static int udp4_espinudp (struct mbuf **, int, struct sockaddr *, 143 struct socket *); 144 #endif 145 static void udp4_sendup (struct mbuf *, int, struct sockaddr *, 146 struct socket *); 147 static int udp4_realinput (struct sockaddr_in *, struct sockaddr_in *, 148 struct mbuf **, int); 149 static int udp4_input_checksum(struct mbuf *, const struct udphdr *, int, int); 150 #endif 151 #ifdef INET 152 static void udp_notify (struct inpcb *, int); 153 #endif 154 155 #ifndef UDBHASHSIZE 156 #define UDBHASHSIZE 128 157 #endif 158 int udbhashsize = UDBHASHSIZE; 159 160 /* 161 * For send - really max datagram size; for receive - 40 1K datagrams. 162 */ 163 static int udp_sendspace = 9216; 164 static int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in)); 165 166 #ifdef MBUFTRACE 167 struct mowner udp_mowner = MOWNER_INIT("udp", ""); 168 struct mowner udp_rx_mowner = MOWNER_INIT("udp", "rx"); 169 struct mowner udp_tx_mowner = MOWNER_INIT("udp", "tx"); 170 #endif 171 172 #ifdef UDP_CSUM_COUNTERS 173 #include <sys/device.h> 174 175 #if defined(INET) 176 struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 177 NULL, "udp", "hwcsum bad"); 178 struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 179 NULL, "udp", "hwcsum ok"); 180 struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 181 NULL, "udp", "hwcsum data"); 182 struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 183 NULL, "udp", "swcsum"); 184 185 EVCNT_ATTACH_STATIC(udp_hwcsum_bad); 186 EVCNT_ATTACH_STATIC(udp_hwcsum_ok); 187 EVCNT_ATTACH_STATIC(udp_hwcsum_data); 188 EVCNT_ATTACH_STATIC(udp_swcsum); 189 #endif /* defined(INET) */ 190 191 #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ 192 #else 193 #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */ 194 #endif /* UDP_CSUM_COUNTERS */ 195 196 static void sysctl_net_inet_udp_setup(struct sysctllog **); 197 198 static int 199 do_udpinit(void) 200 { 201 202 in_pcbinit(&udbtable, udbhashsize, udbhashsize); 203 udpstat_percpu = percpu_alloc(sizeof(uint64_t) * UDP_NSTATS); 204 205 MOWNER_ATTACH(&udp_tx_mowner); 206 MOWNER_ATTACH(&udp_rx_mowner); 207 MOWNER_ATTACH(&udp_mowner); 208 209 return 0; 210 } 211 212 void 213 udp_init_common(void) 214 { 215 static ONCE_DECL(doudpinit); 216 217 RUN_ONCE(&doudpinit, do_udpinit); 218 } 219 220 void 221 udp_init(void) 222 { 223 224 sysctl_net_inet_udp_setup(NULL); 225 226 udp_init_common(); 227 } 228 229 /* 230 * Checksum extended UDP header and data. 231 */ 232 233 int 234 udp_input_checksum(int af, struct mbuf *m, const struct udphdr *uh, 235 int iphlen, int len) 236 { 237 238 switch (af) { 239 #ifdef INET 240 case AF_INET: 241 return udp4_input_checksum(m, uh, iphlen, len); 242 #endif 243 #ifdef INET6 244 case AF_INET6: 245 return udp6_input_checksum(m, uh, iphlen, len); 246 #endif 247 } 248 #ifdef DIAGNOSTIC 249 panic("udp_input_checksum: unknown af %d", af); 250 #endif 251 /* NOTREACHED */ 252 return -1; 253 } 254 255 #ifdef INET 256 257 /* 258 * Checksum extended UDP header and data. 259 */ 260 261 static int 262 udp4_input_checksum(struct mbuf *m, const struct udphdr *uh, 263 int iphlen, int len) 264 { 265 266 /* 267 * XXX it's better to record and check if this mbuf is 268 * already checked. 269 */ 270 271 if (uh->uh_sum == 0) 272 return 0; 273 274 switch (m->m_pkthdr.csum_flags & 275 ((m_get_rcvif_NOMPSAFE(m)->if_csum_flags_rx & M_CSUM_UDPv4) | 276 M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { 277 case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: 278 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); 279 goto badcsum; 280 281 case M_CSUM_UDPv4|M_CSUM_DATA: { 282 u_int32_t hw_csum = m->m_pkthdr.csum_data; 283 284 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); 285 if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR) { 286 const struct ip *ip = 287 mtod(m, const struct ip *); 288 289 hw_csum = in_cksum_phdr(ip->ip_src.s_addr, 290 ip->ip_dst.s_addr, 291 htons(hw_csum + len + IPPROTO_UDP)); 292 } 293 if ((hw_csum ^ 0xffff) != 0) 294 goto badcsum; 295 break; 296 } 297 298 case M_CSUM_UDPv4: 299 /* Checksum was okay. */ 300 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); 301 break; 302 303 default: 304 /* 305 * Need to compute it ourselves. Maybe skip checksum 306 * on loopback interfaces. 307 */ 308 if (__predict_true(!(m_get_rcvif_NOMPSAFE(m)->if_flags & 309 IFF_LOOPBACK) || 310 udp_do_loopback_cksum)) { 311 UDP_CSUM_COUNTER_INCR(&udp_swcsum); 312 if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) 313 goto badcsum; 314 } 315 break; 316 } 317 318 return 0; 319 320 badcsum: 321 UDP_STATINC(UDP_STAT_BADSUM); 322 return -1; 323 } 324 325 void 326 udp_input(struct mbuf *m, ...) 327 { 328 va_list ap; 329 struct sockaddr_in src, dst; 330 struct ip *ip; 331 struct udphdr *uh; 332 int iphlen; 333 int len; 334 int n; 335 u_int16_t ip_len; 336 337 va_start(ap, m); 338 iphlen = va_arg(ap, int); 339 (void)va_arg(ap, int); /* ignore value, advance ap */ 340 va_end(ap); 341 342 MCLAIM(m, &udp_rx_mowner); 343 UDP_STATINC(UDP_STAT_IPACKETS); 344 345 /* 346 * Get IP and UDP header together in first mbuf. 347 */ 348 ip = mtod(m, struct ip *); 349 IP6_EXTHDR_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr)); 350 if (uh == NULL) { 351 UDP_STATINC(UDP_STAT_HDROPS); 352 return; 353 } 354 /* 355 * Enforce alignment requirements that are violated in 356 * some cases, see kern/50766 for details. 357 */ 358 if (UDP_HDR_ALIGNED_P(uh) == 0) { 359 m = m_copyup(m, iphlen + sizeof(struct udphdr), 0); 360 if (m == NULL) { 361 UDP_STATINC(UDP_STAT_HDROPS); 362 return; 363 } 364 ip = mtod(m, struct ip *); 365 uh = (struct udphdr *)(mtod(m, char *) + iphlen); 366 } 367 KASSERT(UDP_HDR_ALIGNED_P(uh)); 368 369 /* destination port of 0 is illegal, based on RFC768. */ 370 if (uh->uh_dport == 0) 371 goto bad; 372 373 /* 374 * Make mbuf data length reflect UDP length. 375 * If not enough data to reflect UDP length, drop. 376 */ 377 ip_len = ntohs(ip->ip_len); 378 len = ntohs((u_int16_t)uh->uh_ulen); 379 if (ip_len != iphlen + len) { 380 if (ip_len < iphlen + len || len < sizeof(struct udphdr)) { 381 UDP_STATINC(UDP_STAT_BADLEN); 382 goto bad; 383 } 384 m_adj(m, iphlen + len - ip_len); 385 } 386 387 /* 388 * Checksum extended UDP header and data. 389 */ 390 if (udp4_input_checksum(m, uh, iphlen, len)) 391 goto badcsum; 392 393 /* construct source and dst sockaddrs. */ 394 sockaddr_in_init(&src, &ip->ip_src, uh->uh_sport); 395 sockaddr_in_init(&dst, &ip->ip_dst, uh->uh_dport); 396 397 if ((n = udp4_realinput(&src, &dst, &m, iphlen)) == -1) { 398 UDP_STATINC(UDP_STAT_HDROPS); 399 return; 400 } 401 if (m == NULL) { 402 /* 403 * packet has been processed by ESP stuff - 404 * e.g. dropped NAT-T-keep-alive-packet ... 405 */ 406 return; 407 } 408 ip = mtod(m, struct ip *); 409 #ifdef INET6 410 if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) { 411 struct sockaddr_in6 src6, dst6; 412 413 memset(&src6, 0, sizeof(src6)); 414 src6.sin6_family = AF_INET6; 415 src6.sin6_len = sizeof(struct sockaddr_in6); 416 in6_in_2_v4mapin6(&ip->ip_src, &src6.sin6_addr); 417 src6.sin6_port = uh->uh_sport; 418 memset(&dst6, 0, sizeof(dst6)); 419 dst6.sin6_family = AF_INET6; 420 dst6.sin6_len = sizeof(struct sockaddr_in6); 421 in6_in_2_v4mapin6(&ip->ip_dst, &dst6.sin6_addr); 422 dst6.sin6_port = uh->uh_dport; 423 424 n += udp6_realinput(AF_INET, &src6, &dst6, m, iphlen); 425 } 426 #endif 427 428 if (n == 0) { 429 if (m->m_flags & (M_BCAST | M_MCAST)) { 430 UDP_STATINC(UDP_STAT_NOPORTBCAST); 431 goto bad; 432 } 433 UDP_STATINC(UDP_STAT_NOPORT); 434 #ifdef IPKDB 435 if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport, 436 m, iphlen + sizeof(struct udphdr), 437 m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) { 438 /* 439 * It was a debugger connect packet, 440 * just drop it now 441 */ 442 goto bad; 443 } 444 #endif 445 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0); 446 m = NULL; 447 } 448 449 bad: 450 if (m) 451 m_freem(m); 452 return; 453 454 badcsum: 455 m_freem(m); 456 } 457 #endif 458 459 #ifdef INET 460 static void 461 udp4_sendup(struct mbuf *m, int off /* offset of data portion */, 462 struct sockaddr *src, struct socket *so) 463 { 464 struct mbuf *opts = NULL; 465 struct mbuf *n; 466 struct inpcb *inp; 467 468 KASSERT(so != NULL); 469 KASSERT(so->so_proto->pr_domain->dom_family == AF_INET); 470 inp = sotoinpcb(so); 471 KASSERT(inp != NULL); 472 473 #if defined(IPSEC) 474 /* check AH/ESP integrity. */ 475 if (ipsec_used && ipsec4_in_reject(m, inp)) { 476 IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); 477 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) 478 icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT, 479 0, 0); 480 return; 481 } 482 #endif /*IPSEC*/ 483 484 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { 485 if (inp->inp_flags & INP_CONTROLOPTS 486 || SOOPT_TIMESTAMP(so->so_options)) { 487 struct ip *ip = mtod(n, struct ip *); 488 ip_savecontrol(inp, &opts, ip, n); 489 } 490 491 m_adj(n, off); 492 if (sbappendaddr(&so->so_rcv, src, n, 493 opts) == 0) { 494 m_freem(n); 495 if (opts) 496 m_freem(opts); 497 so->so_rcv.sb_overflowed++; 498 UDP_STATINC(UDP_STAT_FULLSOCK); 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 struct sockaddr *sa = (struct sockaddr *)src; 603 604 switch(udp4_espinudp(mp, off, sa, inp->inp_socket)) { 605 case -1: /* Error, m was freeed */ 606 rcvcnt = -1; 607 goto bad; 608 break; 609 610 case 1: /* ESP over UDP */ 611 rcvcnt++; 612 goto bad; 613 break; 614 615 case 0: /* plain UDP */ 616 default: /* Unexpected */ 617 /* 618 * Normal UDP processing will take place 619 * m may have changed. 620 */ 621 m = *mp; 622 break; 623 } 624 } 625 #endif 626 627 /* 628 * Check the minimum TTL for socket. 629 */ 630 if (mtod(m, struct ip *)->ip_ttl < inp->inp_ip_minttl) 631 goto bad; 632 633 udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket); 634 rcvcnt++; 635 } 636 637 bad: 638 return rcvcnt; 639 } 640 #endif 641 642 #ifdef INET 643 /* 644 * Notify a udp user of an asynchronous error; 645 * just wake up so that he can collect error status. 646 */ 647 static void 648 udp_notify(struct inpcb *inp, int errno) 649 { 650 inp->inp_socket->so_error = errno; 651 sorwakeup(inp->inp_socket); 652 sowwakeup(inp->inp_socket); 653 } 654 655 void * 656 udp_ctlinput(int cmd, const struct sockaddr *sa, void *v) 657 { 658 struct ip *ip = v; 659 struct udphdr *uh; 660 void (*notify)(struct inpcb *, int) = udp_notify; 661 int errno; 662 663 if (sa->sa_family != AF_INET 664 || sa->sa_len != sizeof(struct sockaddr_in)) 665 return NULL; 666 if ((unsigned)cmd >= PRC_NCMDS) 667 return NULL; 668 errno = inetctlerrmap[cmd]; 669 if (PRC_IS_REDIRECT(cmd)) 670 notify = in_rtchange, ip = 0; 671 else if (cmd == PRC_HOSTDEAD) 672 ip = 0; 673 else if (errno == 0) 674 return NULL; 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); 679 680 /* XXX mapped address case */ 681 } else 682 in_pcbnotifyall(&udbtable, satocsin(sa)->sin_addr, errno, 683 notify); 684 return NULL; 685 } 686 687 int 688 udp_ctloutput(int op, struct socket *so, struct sockopt *sopt) 689 { 690 int s; 691 int error = 0; 692 struct inpcb *inp; 693 int family; 694 int optval; 695 696 family = so->so_proto->pr_domain->dom_family; 697 698 s = splsoftnet(); 699 switch (family) { 700 #ifdef INET 701 case PF_INET: 702 if (sopt->sopt_level != IPPROTO_UDP) { 703 error = ip_ctloutput(op, so, sopt); 704 goto end; 705 } 706 break; 707 #endif 708 #ifdef INET6 709 case PF_INET6: 710 if (sopt->sopt_level != IPPROTO_UDP) { 711 error = ip6_ctloutput(op, so, sopt); 712 goto end; 713 } 714 break; 715 #endif 716 default: 717 error = EAFNOSUPPORT; 718 goto end; 719 } 720 721 722 switch (op) { 723 case PRCO_SETOPT: 724 inp = sotoinpcb(so); 725 726 switch (sopt->sopt_name) { 727 case UDP_ENCAP: 728 error = sockopt_getint(sopt, &optval); 729 if (error) 730 break; 731 732 switch(optval) { 733 case 0: 734 inp->inp_flags &= ~INP_ESPINUDP_ALL; 735 break; 736 737 case UDP_ENCAP_ESPINUDP: 738 inp->inp_flags &= ~INP_ESPINUDP_ALL; 739 inp->inp_flags |= INP_ESPINUDP; 740 break; 741 742 case UDP_ENCAP_ESPINUDP_NON_IKE: 743 inp->inp_flags &= ~INP_ESPINUDP_ALL; 744 inp->inp_flags |= INP_ESPINUDP_NON_IKE; 745 break; 746 default: 747 error = EINVAL; 748 break; 749 } 750 break; 751 752 default: 753 error = ENOPROTOOPT; 754 break; 755 } 756 break; 757 758 default: 759 error = EINVAL; 760 break; 761 } 762 763 end: 764 splx(s); 765 return error; 766 } 767 768 int 769 udp_output(struct mbuf *m, struct inpcb *inp, struct mbuf *control, 770 struct lwp *l) 771 { 772 struct udpiphdr *ui; 773 struct route *ro; 774 struct ip_pktopts pktopts; 775 kauth_cred_t cred; 776 int len = m->m_pkthdr.len; 777 int error, flags = 0; 778 779 MCLAIM(m, &udp_tx_mowner); 780 781 /* 782 * Calculate data length and get a mbuf 783 * for UDP and IP headers. 784 */ 785 M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT); 786 if (m == 0) { 787 error = ENOBUFS; 788 goto release; 789 } 790 791 /* 792 * Compute the packet length of the IP header, and 793 * punt if the length looks bogus. 794 */ 795 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) { 796 error = EMSGSIZE; 797 goto release; 798 } 799 800 if (l == NULL) 801 cred = NULL; 802 else 803 cred = l->l_cred; 804 805 /* Setup IP outgoing packet options */ 806 memset(&pktopts, 0, sizeof(pktopts)); 807 error = ip_setpktopts(control, &pktopts, &flags, inp, cred, 808 IPPROTO_UDP); 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 ((struct ip *)ui)->ip_len = htons(sizeof (struct udpiphdr) + len); 847 ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ 848 ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ 849 UDP_STATINC(UDP_STAT_OPACKETS); 850 851 flags |= inp->inp_socket->so_options & (SO_DONTROUTE|SO_BROADCAST); 852 return ip_output(m, inp->inp_options, ro, flags, pktopts.ippo_imo, inp); 853 854 release: 855 if (control != NULL) 856 m_freem(control); 857 m_freem(m); 858 return error; 859 } 860 861 static int 862 udp_attach(struct socket *so, int proto) 863 { 864 struct inpcb *inp; 865 int error; 866 867 KASSERT(sotoinpcb(so) == NULL); 868 869 /* Assign the lock (must happen even if we will error out). */ 870 sosetlock(so); 871 872 #ifdef MBUFTRACE 873 so->so_mowner = &udp_mowner; 874 so->so_rcv.sb_mowner = &udp_rx_mowner; 875 so->so_snd.sb_mowner = &udp_tx_mowner; 876 #endif 877 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 878 error = soreserve(so, udp_sendspace, udp_recvspace); 879 if (error) { 880 return error; 881 } 882 } 883 884 error = in_pcballoc(so, &udbtable); 885 if (error) { 886 return error; 887 } 888 inp = sotoinpcb(so); 889 inp->inp_ip.ip_ttl = ip_defttl; 890 KASSERT(solocked(so)); 891 892 return error; 893 } 894 895 static void 896 udp_detach(struct socket *so) 897 { 898 struct inpcb *inp; 899 900 KASSERT(solocked(so)); 901 inp = sotoinpcb(so); 902 KASSERT(inp != NULL); 903 in_pcbdetach(inp); 904 } 905 906 static int 907 udp_accept(struct socket *so, struct sockaddr *nam) 908 { 909 KASSERT(solocked(so)); 910 911 panic("udp_accept"); 912 913 return EOPNOTSUPP; 914 } 915 916 static int 917 udp_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 918 { 919 struct inpcb *inp = sotoinpcb(so); 920 struct sockaddr_in *sin = (struct sockaddr_in *)nam; 921 int error = 0; 922 int s; 923 924 KASSERT(solocked(so)); 925 KASSERT(inp != NULL); 926 KASSERT(nam != NULL); 927 928 s = splsoftnet(); 929 error = in_pcbbind(inp, sin, l); 930 splx(s); 931 932 return error; 933 } 934 935 static int 936 udp_listen(struct socket *so, struct lwp *l) 937 { 938 KASSERT(solocked(so)); 939 940 return EOPNOTSUPP; 941 } 942 943 static int 944 udp_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 945 { 946 struct inpcb *inp = sotoinpcb(so); 947 int error = 0; 948 int s; 949 950 KASSERT(solocked(so)); 951 KASSERT(inp != NULL); 952 KASSERT(nam != NULL); 953 954 s = splsoftnet(); 955 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); 956 if (! error) 957 soisconnected(so); 958 splx(s); 959 return error; 960 } 961 962 static int 963 udp_connect2(struct socket *so, struct socket *so2) 964 { 965 KASSERT(solocked(so)); 966 967 return EOPNOTSUPP; 968 } 969 970 static int 971 udp_disconnect(struct socket *so) 972 { 973 struct inpcb *inp = sotoinpcb(so); 974 int s; 975 976 KASSERT(solocked(so)); 977 KASSERT(inp != NULL); 978 979 s = splsoftnet(); 980 /*soisdisconnected(so);*/ 981 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 982 in_pcbdisconnect(inp); 983 inp->inp_laddr = zeroin_addr; /* XXX */ 984 in_pcbstate(inp, INP_BOUND); /* XXX */ 985 splx(s); 986 987 return 0; 988 } 989 990 static int 991 udp_shutdown(struct socket *so) 992 { 993 int s; 994 995 KASSERT(solocked(so)); 996 997 s = splsoftnet(); 998 socantsendmore(so); 999 splx(s); 1000 1001 return 0; 1002 } 1003 1004 static int 1005 udp_abort(struct socket *so) 1006 { 1007 KASSERT(solocked(so)); 1008 1009 panic("udp_abort"); 1010 1011 return EOPNOTSUPP; 1012 } 1013 1014 static int 1015 udp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1016 { 1017 return in_control(so, cmd, nam, ifp); 1018 } 1019 1020 static int 1021 udp_stat(struct socket *so, struct stat *ub) 1022 { 1023 KASSERT(solocked(so)); 1024 1025 /* stat: don't bother with a blocksize. */ 1026 return 0; 1027 } 1028 1029 static int 1030 udp_peeraddr(struct socket *so, struct sockaddr *nam) 1031 { 1032 int s; 1033 1034 KASSERT(solocked(so)); 1035 KASSERT(sotoinpcb(so) != NULL); 1036 KASSERT(nam != NULL); 1037 1038 s = splsoftnet(); 1039 in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam); 1040 splx(s); 1041 1042 return 0; 1043 } 1044 1045 static int 1046 udp_sockaddr(struct socket *so, struct sockaddr *nam) 1047 { 1048 int s; 1049 1050 KASSERT(solocked(so)); 1051 KASSERT(sotoinpcb(so) != NULL); 1052 KASSERT(nam != NULL); 1053 1054 s = splsoftnet(); 1055 in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam); 1056 splx(s); 1057 1058 return 0; 1059 } 1060 1061 static int 1062 udp_rcvd(struct socket *so, int flags, struct lwp *l) 1063 { 1064 KASSERT(solocked(so)); 1065 1066 return EOPNOTSUPP; 1067 } 1068 1069 static int 1070 udp_recvoob(struct socket *so, struct mbuf *m, int flags) 1071 { 1072 KASSERT(solocked(so)); 1073 1074 return EOPNOTSUPP; 1075 } 1076 1077 static int 1078 udp_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 1079 struct mbuf *control, struct lwp *l) 1080 { 1081 struct inpcb *inp = sotoinpcb(so); 1082 int error = 0; 1083 struct in_addr laddr; /* XXX */ 1084 int s; 1085 1086 KASSERT(solocked(so)); 1087 KASSERT(inp != NULL); 1088 KASSERT(m != NULL); 1089 1090 memset(&laddr, 0, sizeof laddr); 1091 1092 s = splsoftnet(); 1093 if (nam) { 1094 laddr = inp->inp_laddr; /* XXX */ 1095 if ((so->so_state & SS_ISCONNECTED) != 0) { 1096 error = EISCONN; 1097 goto die; 1098 } 1099 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); 1100 if (error) 1101 goto die; 1102 } else { 1103 if ((so->so_state & SS_ISCONNECTED) == 0) { 1104 error = ENOTCONN; 1105 goto die; 1106 } 1107 } 1108 error = udp_output(m, inp, control, l); 1109 m = NULL; 1110 control = NULL; 1111 if (nam) { 1112 in_pcbdisconnect(inp); 1113 inp->inp_laddr = laddr; /* XXX */ 1114 in_pcbstate(inp, INP_BOUND); /* XXX */ 1115 } 1116 die: 1117 if (m != NULL) 1118 m_freem(m); 1119 if (control != NULL) 1120 m_freem(control); 1121 1122 splx(s); 1123 return error; 1124 } 1125 1126 static int 1127 udp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 1128 { 1129 KASSERT(solocked(so)); 1130 1131 m_freem(m); 1132 m_freem(control); 1133 1134 return EOPNOTSUPP; 1135 } 1136 1137 static int 1138 udp_purgeif(struct socket *so, struct ifnet *ifp) 1139 { 1140 int s; 1141 1142 s = splsoftnet(); 1143 mutex_enter(softnet_lock); 1144 in_pcbpurgeif0(&udbtable, ifp); 1145 #ifdef NET_MPSAFE 1146 mutex_exit(softnet_lock); 1147 #endif 1148 in_purgeif(ifp); 1149 #ifdef NET_MPSAFE 1150 mutex_enter(softnet_lock); 1151 #endif 1152 in_pcbpurgeif(&udbtable, ifp); 1153 mutex_exit(softnet_lock); 1154 splx(s); 1155 1156 return 0; 1157 } 1158 1159 static int 1160 sysctl_net_inet_udp_stats(SYSCTLFN_ARGS) 1161 { 1162 1163 return (NETSTAT_SYSCTL(udpstat_percpu, UDP_NSTATS)); 1164 } 1165 1166 /* 1167 * Sysctl for udp variables. 1168 */ 1169 static void 1170 sysctl_net_inet_udp_setup(struct sysctllog **clog) 1171 { 1172 1173 sysctl_createv(clog, 0, NULL, NULL, 1174 CTLFLAG_PERMANENT, 1175 CTLTYPE_NODE, "inet", NULL, 1176 NULL, 0, NULL, 0, 1177 CTL_NET, PF_INET, CTL_EOL); 1178 sysctl_createv(clog, 0, NULL, NULL, 1179 CTLFLAG_PERMANENT, 1180 CTLTYPE_NODE, "udp", 1181 SYSCTL_DESCR("UDPv4 related settings"), 1182 NULL, 0, NULL, 0, 1183 CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL); 1184 1185 sysctl_createv(clog, 0, NULL, NULL, 1186 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1187 CTLTYPE_INT, "checksum", 1188 SYSCTL_DESCR("Compute UDP checksums"), 1189 NULL, 0, &udpcksum, 0, 1190 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM, 1191 CTL_EOL); 1192 sysctl_createv(clog, 0, NULL, NULL, 1193 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1194 CTLTYPE_INT, "sendspace", 1195 SYSCTL_DESCR("Default UDP send buffer size"), 1196 NULL, 0, &udp_sendspace, 0, 1197 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE, 1198 CTL_EOL); 1199 sysctl_createv(clog, 0, NULL, NULL, 1200 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1201 CTLTYPE_INT, "recvspace", 1202 SYSCTL_DESCR("Default UDP receive buffer size"), 1203 NULL, 0, &udp_recvspace, 0, 1204 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE, 1205 CTL_EOL); 1206 sysctl_createv(clog, 0, NULL, NULL, 1207 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1208 CTLTYPE_INT, "do_loopback_cksum", 1209 SYSCTL_DESCR("Perform UDP checksum on loopback"), 1210 NULL, 0, &udp_do_loopback_cksum, 0, 1211 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM, 1212 CTL_EOL); 1213 sysctl_createv(clog, 0, NULL, NULL, 1214 CTLFLAG_PERMANENT, 1215 CTLTYPE_STRUCT, "pcblist", 1216 SYSCTL_DESCR("UDP protocol control block list"), 1217 sysctl_inpcblist, 0, &udbtable, 0, 1218 CTL_NET, PF_INET, IPPROTO_UDP, CTL_CREATE, 1219 CTL_EOL); 1220 sysctl_createv(clog, 0, NULL, NULL, 1221 CTLFLAG_PERMANENT, 1222 CTLTYPE_STRUCT, "stats", 1223 SYSCTL_DESCR("UDP statistics"), 1224 sysctl_net_inet_udp_stats, 0, NULL, 0, 1225 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_STATS, 1226 CTL_EOL); 1227 } 1228 #endif 1229 1230 void 1231 udp_statinc(u_int stat) 1232 { 1233 1234 KASSERT(stat < UDP_NSTATS); 1235 UDP_STATINC(stat); 1236 } 1237 1238 #if defined(INET) && defined(IPSEC) 1239 /* 1240 * Returns: 1241 * 1 if the packet was processed 1242 * 0 if normal UDP processing should take place 1243 * -1 if an error occurent and m was freed 1244 */ 1245 static int 1246 udp4_espinudp(struct mbuf **mp, int off, struct sockaddr *src, 1247 struct socket *so) 1248 { 1249 size_t len; 1250 void *data; 1251 struct inpcb *inp; 1252 size_t skip = 0; 1253 size_t minlen; 1254 size_t iphdrlen; 1255 struct ip *ip; 1256 struct m_tag *tag; 1257 struct udphdr *udphdr; 1258 u_int16_t sport, dport; 1259 struct mbuf *m = *mp; 1260 1261 /* 1262 * Collapse the mbuf chain if the first mbuf is too short 1263 * The longest case is: UDP + non ESP marker + ESP 1264 */ 1265 minlen = off + sizeof(u_int64_t) + sizeof(struct esp); 1266 if (minlen > m->m_pkthdr.len) 1267 minlen = m->m_pkthdr.len; 1268 1269 if (m->m_len < minlen) { 1270 if ((*mp = m_pullup(m, minlen)) == NULL) { 1271 printf("udp4_espinudp: m_pullup failed\n"); 1272 return -1; 1273 } 1274 m = *mp; 1275 } 1276 1277 len = m->m_len - off; 1278 data = mtod(m, char *) + off; 1279 inp = sotoinpcb(so); 1280 1281 /* Ignore keepalive packets */ 1282 if ((len == 1) && (*(unsigned char *)data == 0xff)) { 1283 m_free(m); 1284 *mp = NULL; /* avoid any further processiong by caller ... */ 1285 return 1; 1286 } 1287 1288 /* 1289 * Check that the payload is long enough to hold 1290 * an ESP header and compute the length of encapsulation 1291 * header to remove 1292 */ 1293 if (inp->inp_flags & INP_ESPINUDP) { 1294 u_int32_t *st = (u_int32_t *)data; 1295 1296 if ((len <= sizeof(struct esp)) || (*st == 0)) 1297 return 0; /* Normal UDP processing */ 1298 1299 skip = sizeof(struct udphdr); 1300 } 1301 1302 if (inp->inp_flags & INP_ESPINUDP_NON_IKE) { 1303 u_int32_t *st = (u_int32_t *)data; 1304 1305 if ((len <= sizeof(u_int64_t) + sizeof(struct esp)) 1306 || ((st[0] | st[1]) != 0)) 1307 return 0; /* Normal UDP processing */ 1308 1309 skip = sizeof(struct udphdr) + sizeof(u_int64_t); 1310 } 1311 1312 /* 1313 * Get the UDP ports. They are handled in network 1314 * order everywhere in IPSEC_NAT_T code. 1315 */ 1316 udphdr = (struct udphdr *)((char *)data - skip); 1317 sport = udphdr->uh_sport; 1318 dport = udphdr->uh_dport; 1319 1320 /* 1321 * Remove the UDP header (and possibly the non ESP marker) 1322 * IP header lendth is iphdrlen 1323 * Before: 1324 * <--- off ---> 1325 * +----+------+-----+ 1326 * | IP | UDP | ESP | 1327 * +----+------+-----+ 1328 * <-skip-> 1329 * After: 1330 * +----+-----+ 1331 * | IP | ESP | 1332 * +----+-----+ 1333 * <-skip-> 1334 */ 1335 iphdrlen = off - sizeof(struct udphdr); 1336 memmove(mtod(m, char *) + skip, mtod(m, void *), iphdrlen); 1337 m_adj(m, skip); 1338 1339 ip = mtod(m, struct ip *); 1340 ip->ip_len = htons(ntohs(ip->ip_len) - skip); 1341 ip->ip_p = IPPROTO_ESP; 1342 1343 /* 1344 * We have modified the packet - it is now ESP, so we should not 1345 * return to UDP processing ... 1346 * 1347 * Add a PACKET_TAG_IPSEC_NAT_T_PORT tag to remember 1348 * the source UDP port. This is required if we want 1349 * to select the right SPD for multiple hosts behind 1350 * same NAT 1351 */ 1352 if ((tag = m_tag_get(PACKET_TAG_IPSEC_NAT_T_PORTS, 1353 sizeof(sport) + sizeof(dport), M_DONTWAIT)) == NULL) { 1354 printf("udp4_espinudp: m_tag_get failed\n"); 1355 m_freem(m); 1356 return -1; 1357 } 1358 ((u_int16_t *)(tag + 1))[0] = sport; 1359 ((u_int16_t *)(tag + 1))[1] = dport; 1360 m_tag_prepend(m, tag); 1361 1362 if (ipsec_used) 1363 ipsec4_common_input(m, iphdrlen, IPPROTO_ESP); 1364 /* XXX: else */ 1365 1366 /* We handled it, it shouldn't be handled by UDP */ 1367 *mp = NULL; /* avoid free by caller ... */ 1368 return 1; 1369 } 1370 #endif 1371 1372 PR_WRAP_USRREQS(udp) 1373 #define udp_attach udp_attach_wrapper 1374 #define udp_detach udp_detach_wrapper 1375 #define udp_accept udp_accept_wrapper 1376 #define udp_bind udp_bind_wrapper 1377 #define udp_listen udp_listen_wrapper 1378 #define udp_connect udp_connect_wrapper 1379 #define udp_connect2 udp_connect2_wrapper 1380 #define udp_disconnect udp_disconnect_wrapper 1381 #define udp_shutdown udp_shutdown_wrapper 1382 #define udp_abort udp_abort_wrapper 1383 #define udp_ioctl udp_ioctl_wrapper 1384 #define udp_stat udp_stat_wrapper 1385 #define udp_peeraddr udp_peeraddr_wrapper 1386 #define udp_sockaddr udp_sockaddr_wrapper 1387 #define udp_rcvd udp_rcvd_wrapper 1388 #define udp_recvoob udp_recvoob_wrapper 1389 #define udp_send udp_send_wrapper 1390 #define udp_sendoob udp_sendoob_wrapper 1391 #define udp_purgeif udp_purgeif_wrapper 1392 1393 const struct pr_usrreqs udp_usrreqs = { 1394 .pr_attach = udp_attach, 1395 .pr_detach = udp_detach, 1396 .pr_accept = udp_accept, 1397 .pr_bind = udp_bind, 1398 .pr_listen = udp_listen, 1399 .pr_connect = udp_connect, 1400 .pr_connect2 = udp_connect2, 1401 .pr_disconnect = udp_disconnect, 1402 .pr_shutdown = udp_shutdown, 1403 .pr_abort = udp_abort, 1404 .pr_ioctl = udp_ioctl, 1405 .pr_stat = udp_stat, 1406 .pr_peeraddr = udp_peeraddr, 1407 .pr_sockaddr = udp_sockaddr, 1408 .pr_rcvd = udp_rcvd, 1409 .pr_recvoob = udp_recvoob, 1410 .pr_send = udp_send, 1411 .pr_sendoob = udp_sendoob, 1412 .pr_purgeif = udp_purgeif, 1413 }; 1414
Indexes created Fri Sep 26 20:09:58 GMT 2025