udp_usrreq.c revision 1.226.2.4
1 /* $NetBSD: udp_usrreq.c,v 1.226.2.4 2017/04/26 02:53:29 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 1.226.2.4 2017/04/26 02:53:29 pgoyette Exp $"); 70 71 #ifdef _KERNEL_OPT 72 #include "opt_inet.h" 73 #include "opt_compat_netbsd.h" 74 #include "opt_ipsec.h" 75 #include "opt_inet_csum.h" 76 #include "opt_ipkdb.h" 77 #include "opt_mbuftrace.h" 78 #include "opt_net_mpsafe.h" 79 #endif 80 81 #include <sys/param.h> 82 #include <sys/mbuf.h> 83 #include <sys/once.h> 84 #include <sys/protosw.h> 85 #include <sys/socket.h> 86 #include <sys/socketvar.h> 87 #include <sys/systm.h> 88 #include <sys/proc.h> 89 #include <sys/domain.h> 90 #include <sys/sysctl.h> 91 92 #include <net/if.h> 93 94 #include <netinet/in.h> 95 #include <netinet/in_systm.h> 96 #include <netinet/in_var.h> 97 #include <netinet/ip.h> 98 #include <netinet/in_pcb.h> 99 #include <netinet/ip_var.h> 100 #include <netinet/ip_icmp.h> 101 #include <netinet/udp.h> 102 #include <netinet/udp_var.h> 103 #include <netinet/udp_private.h> 104 105 #ifdef INET6 106 #include <netinet/ip6.h> 107 #include <netinet/icmp6.h> 108 #include <netinet6/ip6_var.h> 109 #include <netinet6/ip6_private.h> 110 #include <netinet6/in6_pcb.h> 111 #include <netinet6/udp6_var.h> 112 #include <netinet6/udp6_private.h> 113 #endif 114 115 #ifndef INET6 116 /* always need ip6.h for IP6_EXTHDR_GET */ 117 #include <netinet/ip6.h> 118 #endif 119 120 #ifdef IPSEC 121 #include <netipsec/ipsec.h> 122 #include <netipsec/ipsec_var.h> 123 #include <netipsec/ipsec_private.h> 124 #include <netipsec/esp.h> 125 #ifdef INET6 126 #include <netipsec/ipsec6.h> 127 #endif 128 #endif /* IPSEC */ 129 130 #ifdef COMPAT_50 131 #include <compat/sys/socket.h> 132 #endif 133 134 #ifdef IPKDB 135 #include <ipkdb/ipkdb.h> 136 #endif 137 138 int udpcksum = 1; 139 int udp_do_loopback_cksum = 0; 140 141 struct inpcbtable udbtable; 142 143 percpu_t *udpstat_percpu; 144 145 #ifdef INET 146 #ifdef IPSEC 147 static int udp4_espinudp (struct mbuf **, int, struct sockaddr *, 148 struct socket *); 149 #endif 150 static void udp4_sendup (struct mbuf *, int, struct sockaddr *, 151 struct socket *); 152 static int udp4_realinput (struct sockaddr_in *, struct sockaddr_in *, 153 struct mbuf **, int); 154 static int udp4_input_checksum(struct mbuf *, const struct udphdr *, int, int); 155 #endif 156 #ifdef INET 157 static void udp_notify (struct inpcb *, int); 158 #endif 159 160 #ifndef UDBHASHSIZE 161 #define UDBHASHSIZE 128 162 #endif 163 int udbhashsize = UDBHASHSIZE; 164 165 /* 166 * For send - really max datagram size; for receive - 40 1K datagrams. 167 */ 168 static int udp_sendspace = 9216; 169 static int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in)); 170 171 #ifdef MBUFTRACE 172 struct mowner udp_mowner = MOWNER_INIT("udp", ""); 173 struct mowner udp_rx_mowner = MOWNER_INIT("udp", "rx"); 174 struct mowner udp_tx_mowner = MOWNER_INIT("udp", "tx"); 175 #endif 176 177 #ifdef UDP_CSUM_COUNTERS 178 #include <sys/device.h> 179 180 #if defined(INET) 181 struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 182 NULL, "udp", "hwcsum bad"); 183 struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 184 NULL, "udp", "hwcsum ok"); 185 struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 186 NULL, "udp", "hwcsum data"); 187 struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, 188 NULL, "udp", "swcsum"); 189 190 EVCNT_ATTACH_STATIC(udp_hwcsum_bad); 191 EVCNT_ATTACH_STATIC(udp_hwcsum_ok); 192 EVCNT_ATTACH_STATIC(udp_hwcsum_data); 193 EVCNT_ATTACH_STATIC(udp_swcsum); 194 #endif /* defined(INET) */ 195 196 #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ 197 #else 198 #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */ 199 #endif /* UDP_CSUM_COUNTERS */ 200 201 static void sysctl_net_inet_udp_setup(struct sysctllog **); 202 203 static int 204 do_udpinit(void) 205 { 206 207 in_pcbinit(&udbtable, udbhashsize, udbhashsize); 208 udpstat_percpu = percpu_alloc(sizeof(uint64_t) * UDP_NSTATS); 209 210 MOWNER_ATTACH(&udp_tx_mowner); 211 MOWNER_ATTACH(&udp_rx_mowner); 212 MOWNER_ATTACH(&udp_mowner); 213 214 return 0; 215 } 216 217 void 218 udp_init_common(void) 219 { 220 static ONCE_DECL(doudpinit); 221 222 RUN_ONCE(&doudpinit, do_udpinit); 223 } 224 225 void 226 udp_init(void) 227 { 228 229 sysctl_net_inet_udp_setup(NULL); 230 231 udp_init_common(); 232 } 233 234 /* 235 * Checksum extended UDP header and data. 236 */ 237 238 int 239 udp_input_checksum(int af, struct mbuf *m, const struct udphdr *uh, 240 int iphlen, int len) 241 { 242 243 switch (af) { 244 #ifdef INET 245 case AF_INET: 246 return udp4_input_checksum(m, uh, iphlen, len); 247 #endif 248 #ifdef INET6 249 case AF_INET6: 250 return udp6_input_checksum(m, uh, iphlen, len); 251 #endif 252 } 253 #ifdef DIAGNOSTIC 254 panic("udp_input_checksum: unknown af %d", af); 255 #endif 256 /* NOTREACHED */ 257 return -1; 258 } 259 260 #ifdef INET 261 262 /* 263 * Checksum extended UDP header and data. 264 */ 265 266 static int 267 udp4_input_checksum(struct mbuf *m, const struct udphdr *uh, 268 int iphlen, int len) 269 { 270 271 /* 272 * XXX it's better to record and check if this mbuf is 273 * already checked. 274 */ 275 276 if (uh->uh_sum == 0) 277 return 0; 278 279 switch (m->m_pkthdr.csum_flags & 280 ((m_get_rcvif_NOMPSAFE(m)->if_csum_flags_rx & M_CSUM_UDPv4) | 281 M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { 282 case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: 283 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); 284 goto badcsum; 285 286 case M_CSUM_UDPv4|M_CSUM_DATA: { 287 u_int32_t hw_csum = m->m_pkthdr.csum_data; 288 289 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); 290 if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR) { 291 const struct ip *ip = 292 mtod(m, const struct ip *); 293 294 hw_csum = in_cksum_phdr(ip->ip_src.s_addr, 295 ip->ip_dst.s_addr, 296 htons(hw_csum + len + IPPROTO_UDP)); 297 } 298 if ((hw_csum ^ 0xffff) != 0) 299 goto badcsum; 300 break; 301 } 302 303 case M_CSUM_UDPv4: 304 /* Checksum was okay. */ 305 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); 306 break; 307 308 default: 309 /* 310 * Need to compute it ourselves. Maybe skip checksum 311 * on loopback interfaces. 312 */ 313 if (__predict_true(!(m_get_rcvif_NOMPSAFE(m)->if_flags & 314 IFF_LOOPBACK) || 315 udp_do_loopback_cksum)) { 316 UDP_CSUM_COUNTER_INCR(&udp_swcsum); 317 if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) 318 goto badcsum; 319 } 320 break; 321 } 322 323 return 0; 324 325 badcsum: 326 UDP_STATINC(UDP_STAT_BADSUM); 327 return -1; 328 } 329 330 void 331 udp_input(struct mbuf *m, ...) 332 { 333 va_list ap; 334 struct sockaddr_in src, dst; 335 struct ip *ip; 336 struct udphdr *uh; 337 int iphlen; 338 int len; 339 int n; 340 u_int16_t ip_len; 341 342 va_start(ap, m); 343 iphlen = va_arg(ap, int); 344 (void)va_arg(ap, int); /* ignore value, advance ap */ 345 va_end(ap); 346 347 MCLAIM(m, &udp_rx_mowner); 348 UDP_STATINC(UDP_STAT_IPACKETS); 349 350 /* 351 * Get IP and UDP header together in first mbuf. 352 */ 353 ip = mtod(m, struct ip *); 354 IP6_EXTHDR_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr)); 355 if (uh == NULL) { 356 UDP_STATINC(UDP_STAT_HDROPS); 357 return; 358 } 359 /* 360 * Enforce alignment requirements that are violated in 361 * some cases, see kern/50766 for details. 362 */ 363 if (UDP_HDR_ALIGNED_P(uh) == 0) { 364 m = m_copyup(m, iphlen + sizeof(struct udphdr), 0); 365 if (m == NULL) { 366 UDP_STATINC(UDP_STAT_HDROPS); 367 return; 368 } 369 ip = mtod(m, struct ip *); 370 uh = (struct udphdr *)(mtod(m, char *) + iphlen); 371 } 372 KASSERT(UDP_HDR_ALIGNED_P(uh)); 373 374 /* destination port of 0 is illegal, based on RFC768. */ 375 if (uh->uh_dport == 0) 376 goto bad; 377 378 /* 379 * Make mbuf data length reflect UDP length. 380 * If not enough data to reflect UDP length, drop. 381 */ 382 ip_len = ntohs(ip->ip_len); 383 len = ntohs((u_int16_t)uh->uh_ulen); 384 if (ip_len != iphlen + len) { 385 if (ip_len < iphlen + len || len < sizeof(struct udphdr)) { 386 UDP_STATINC(UDP_STAT_BADLEN); 387 goto bad; 388 } 389 m_adj(m, iphlen + len - ip_len); 390 } 391 392 /* 393 * Checksum extended UDP header and data. 394 */ 395 if (udp4_input_checksum(m, uh, iphlen, len)) 396 goto badcsum; 397 398 /* construct source and dst sockaddrs. */ 399 sockaddr_in_init(&src, &ip->ip_src, uh->uh_sport); 400 sockaddr_in_init(&dst, &ip->ip_dst, uh->uh_dport); 401 402 if ((n = udp4_realinput(&src, &dst, &m, iphlen)) == -1) { 403 UDP_STATINC(UDP_STAT_HDROPS); 404 return; 405 } 406 if (m == NULL) { 407 /* 408 * packet has been processed by ESP stuff - 409 * e.g. dropped NAT-T-keep-alive-packet ... 410 */ 411 return; 412 } 413 ip = mtod(m, struct ip *); 414 #ifdef INET6 415 if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) { 416 struct sockaddr_in6 src6, dst6; 417 418 memset(&src6, 0, sizeof(src6)); 419 src6.sin6_family = AF_INET6; 420 src6.sin6_len = sizeof(struct sockaddr_in6); 421 in6_in_2_v4mapin6(&ip->ip_src, &src6.sin6_addr); 422 src6.sin6_port = uh->uh_sport; 423 memset(&dst6, 0, sizeof(dst6)); 424 dst6.sin6_family = AF_INET6; 425 dst6.sin6_len = sizeof(struct sockaddr_in6); 426 in6_in_2_v4mapin6(&ip->ip_dst, &dst6.sin6_addr); 427 dst6.sin6_port = uh->uh_dport; 428 429 n += udp6_realinput(AF_INET, &src6, &dst6, m, iphlen); 430 } 431 #endif 432 433 if (n == 0) { 434 if (m->m_flags & (M_BCAST | M_MCAST)) { 435 UDP_STATINC(UDP_STAT_NOPORTBCAST); 436 goto bad; 437 } 438 UDP_STATINC(UDP_STAT_NOPORT); 439 #ifdef IPKDB 440 if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport, 441 m, iphlen + sizeof(struct udphdr), 442 m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) { 443 /* 444 * It was a debugger connect packet, 445 * just drop it now 446 */ 447 goto bad; 448 } 449 #endif 450 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0); 451 m = NULL; 452 } 453 454 bad: 455 if (m) 456 m_freem(m); 457 return; 458 459 badcsum: 460 m_freem(m); 461 } 462 #endif 463 464 #ifdef INET 465 static void 466 udp4_sendup(struct mbuf *m, int off /* offset of data portion */, 467 struct sockaddr *src, struct socket *so) 468 { 469 struct mbuf *opts = NULL; 470 struct mbuf *n; 471 struct inpcb *inp; 472 473 KASSERT(so != NULL); 474 KASSERT(so->so_proto->pr_domain->dom_family == AF_INET); 475 inp = sotoinpcb(so); 476 KASSERT(inp != NULL); 477 478 #if defined(IPSEC) 479 /* check AH/ESP integrity. */ 480 if (ipsec_used && ipsec4_in_reject(m, inp)) { 481 IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); 482 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) 483 icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT, 484 0, 0); 485 return; 486 } 487 #endif /*IPSEC*/ 488 489 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { 490 if (inp->inp_flags & INP_CONTROLOPTS 491 #ifdef SO_OTIMESTAMP 492 || so->so_options & SO_OTIMESTAMP 493 #endif 494 || so->so_options & SO_TIMESTAMP) { 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, 501 opts) == 0) { 502 m_freem(n); 503 if (opts) 504 m_freem(opts); 505 so->so_rcv.sb_overflowed++; 506 UDP_STATINC(UDP_STAT_FULLSOCK); 507 } else 508 sorwakeup(so); 509 } 510 } 511 #endif 512 513 #ifdef INET 514 static int 515 udp4_realinput(struct sockaddr_in *src, struct sockaddr_in *dst, 516 struct mbuf **mp, int off /* offset of udphdr */) 517 { 518 u_int16_t *sport, *dport; 519 int rcvcnt; 520 struct in_addr *src4, *dst4; 521 struct inpcb_hdr *inph; 522 struct inpcb *inp; 523 struct mbuf *m = *mp; 524 525 rcvcnt = 0; 526 off += sizeof(struct udphdr); /* now, offset of payload */ 527 528 if (src->sin_family != AF_INET || dst->sin_family != AF_INET) 529 goto bad; 530 531 src4 = &src->sin_addr; 532 sport = &src->sin_port; 533 dst4 = &dst->sin_addr; 534 dport = &dst->sin_port; 535 536 if (IN_MULTICAST(dst4->s_addr) || 537 in_broadcast(*dst4, m_get_rcvif_NOMPSAFE(m))) { 538 /* 539 * Deliver a multicast or broadcast datagram to *all* sockets 540 * for which the local and remote addresses and ports match 541 * those of the incoming datagram. This allows more than 542 * one process to receive multi/broadcasts on the same port. 543 * (This really ought to be done for unicast datagrams as 544 * well, but that would cause problems with existing 545 * applications that open both address-specific sockets and 546 * a wildcard socket listening to the same port -- they would 547 * end up receiving duplicates of every unicast datagram. 548 * Those applications open the multiple sockets to overcome an 549 * inadequacy of the UDP socket interface, but for backwards 550 * compatibility we avoid the problem here rather than 551 * fixing the interface. Maybe 4.5BSD will remedy this?) 552 */ 553 554 /* 555 * KAME note: traditionally we dropped udpiphdr from mbuf here. 556 * we need udpiphdr for IPsec processing so we do that later. 557 */ 558 /* 559 * Locate pcb(s) for datagram. 560 */ 561 TAILQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) { 562 inp = (struct inpcb *)inph; 563 if (inp->inp_af != AF_INET) 564 continue; 565 566 if (inp->inp_lport != *dport) 567 continue; 568 if (!in_nullhost(inp->inp_laddr)) { 569 if (!in_hosteq(inp->inp_laddr, *dst4)) 570 continue; 571 } 572 if (!in_nullhost(inp->inp_faddr)) { 573 if (!in_hosteq(inp->inp_faddr, *src4) || 574 inp->inp_fport != *sport) 575 continue; 576 } 577 578 udp4_sendup(m, off, (struct sockaddr *)src, 579 inp->inp_socket); 580 rcvcnt++; 581 582 /* 583 * Don't look for additional matches if this one does 584 * not have either the SO_REUSEPORT or SO_REUSEADDR 585 * socket options set. This heuristic avoids searching 586 * through all pcbs in the common case of a non-shared 587 * port. It assumes that an application will never 588 * clear these options after setting them. 589 */ 590 if ((inp->inp_socket->so_options & 591 (SO_REUSEPORT|SO_REUSEADDR)) == 0) 592 break; 593 } 594 } else { 595 /* 596 * Locate pcb for datagram. 597 */ 598 inp = in_pcblookup_connect(&udbtable, *src4, *sport, *dst4, 599 *dport, 0); 600 if (inp == 0) { 601 UDP_STATINC(UDP_STAT_PCBHASHMISS); 602 inp = in_pcblookup_bind(&udbtable, *dst4, *dport); 603 if (inp == 0) 604 return rcvcnt; 605 } 606 607 #ifdef IPSEC 608 /* Handle ESP over UDP */ 609 if (inp->inp_flags & INP_ESPINUDP_ALL) { 610 struct sockaddr *sa = (struct sockaddr *)src; 611 612 switch(udp4_espinudp(mp, off, sa, inp->inp_socket)) { 613 case -1: /* Error, m was freeed */ 614 rcvcnt = -1; 615 goto bad; 616 break; 617 618 case 1: /* ESP over UDP */ 619 rcvcnt++; 620 goto bad; 621 break; 622 623 case 0: /* plain UDP */ 624 default: /* Unexpected */ 625 /* 626 * Normal UDP processing will take place 627 * m may have changed. 628 */ 629 m = *mp; 630 break; 631 } 632 } 633 #endif 634 635 /* 636 * Check the minimum TTL for socket. 637 */ 638 if (mtod(m, struct ip *)->ip_ttl < inp->inp_ip_minttl) 639 goto bad; 640 641 udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket); 642 rcvcnt++; 643 } 644 645 bad: 646 return rcvcnt; 647 } 648 #endif 649 650 #ifdef INET 651 /* 652 * Notify a udp user of an asynchronous error; 653 * just wake up so that he can collect error status. 654 */ 655 static void 656 udp_notify(struct inpcb *inp, int errno) 657 { 658 inp->inp_socket->so_error = errno; 659 sorwakeup(inp->inp_socket); 660 sowwakeup(inp->inp_socket); 661 } 662 663 void * 664 udp_ctlinput(int cmd, const struct sockaddr *sa, void *v) 665 { 666 struct ip *ip = v; 667 struct udphdr *uh; 668 void (*notify)(struct inpcb *, int) = udp_notify; 669 int errno; 670 671 if (sa->sa_family != AF_INET 672 || sa->sa_len != sizeof(struct sockaddr_in)) 673 return NULL; 674 if ((unsigned)cmd >= PRC_NCMDS) 675 return NULL; 676 errno = inetctlerrmap[cmd]; 677 if (PRC_IS_REDIRECT(cmd)) 678 notify = in_rtchange, ip = 0; 679 else if (cmd == PRC_HOSTDEAD) 680 ip = 0; 681 else if (errno == 0) 682 return NULL; 683 if (ip) { 684 uh = (struct udphdr *)((char *)ip + (ip->ip_hl << 2)); 685 in_pcbnotify(&udbtable, satocsin(sa)->sin_addr, uh->uh_dport, 686 ip->ip_src, uh->uh_sport, errno, notify); 687 688 /* XXX mapped address case */ 689 } else 690 in_pcbnotifyall(&udbtable, satocsin(sa)->sin_addr, errno, 691 notify); 692 return NULL; 693 } 694 695 int 696 udp_ctloutput(int op, struct socket *so, struct sockopt *sopt) 697 { 698 int s; 699 int error = 0; 700 struct inpcb *inp; 701 int family; 702 int optval; 703 704 family = so->so_proto->pr_domain->dom_family; 705 706 s = splsoftnet(); 707 switch (family) { 708 #ifdef INET 709 case PF_INET: 710 if (sopt->sopt_level != IPPROTO_UDP) { 711 error = ip_ctloutput(op, so, sopt); 712 goto end; 713 } 714 break; 715 #endif 716 #ifdef INET6 717 case PF_INET6: 718 if (sopt->sopt_level != IPPROTO_UDP) { 719 error = ip6_ctloutput(op, so, sopt); 720 goto end; 721 } 722 break; 723 #endif 724 default: 725 error = EAFNOSUPPORT; 726 goto end; 727 } 728 729 730 switch (op) { 731 case PRCO_SETOPT: 732 inp = sotoinpcb(so); 733 734 switch (sopt->sopt_name) { 735 case UDP_ENCAP: 736 error = sockopt_getint(sopt, &optval); 737 if (error) 738 break; 739 740 switch(optval) { 741 case 0: 742 inp->inp_flags &= ~INP_ESPINUDP_ALL; 743 break; 744 745 case UDP_ENCAP_ESPINUDP: 746 inp->inp_flags &= ~INP_ESPINUDP_ALL; 747 inp->inp_flags |= INP_ESPINUDP; 748 break; 749 750 case UDP_ENCAP_ESPINUDP_NON_IKE: 751 inp->inp_flags &= ~INP_ESPINUDP_ALL; 752 inp->inp_flags |= INP_ESPINUDP_NON_IKE; 753 break; 754 default: 755 error = EINVAL; 756 break; 757 } 758 break; 759 760 default: 761 error = ENOPROTOOPT; 762 break; 763 } 764 break; 765 766 default: 767 error = EINVAL; 768 break; 769 } 770 771 end: 772 splx(s); 773 return error; 774 } 775 776 777 int 778 udp_output(struct mbuf *m, struct inpcb *inp) 779 { 780 struct udpiphdr *ui; 781 struct route *ro; 782 int len = m->m_pkthdr.len; 783 int error = 0; 784 785 MCLAIM(m, &udp_tx_mowner); 786 787 /* 788 * Calculate data length and get a mbuf 789 * for UDP and IP headers. 790 */ 791 M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT); 792 if (m == 0) { 793 error = ENOBUFS; 794 goto release; 795 } 796 797 /* 798 * Compute the packet length of the IP header, and 799 * punt if the length looks bogus. 800 */ 801 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) { 802 error = EMSGSIZE; 803 goto release; 804 } 805 806 /* 807 * Fill in mbuf with extended UDP header 808 * and addresses and length put into network format. 809 */ 810 ui = mtod(m, struct udpiphdr *); 811 ui->ui_pr = IPPROTO_UDP; 812 ui->ui_src = inp->inp_laddr; 813 ui->ui_dst = inp->inp_faddr; 814 ui->ui_sport = inp->inp_lport; 815 ui->ui_dport = inp->inp_fport; 816 ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr)); 817 818 ro = &inp->inp_route; 819 820 /* 821 * Set up checksum and output datagram. 822 */ 823 if (udpcksum) { 824 /* 825 * XXX Cache pseudo-header checksum part for 826 * XXX "connected" UDP sockets. 827 */ 828 ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr, 829 ui->ui_dst.s_addr, htons((u_int16_t)len + 830 sizeof(struct udphdr) + IPPROTO_UDP)); 831 m->m_pkthdr.csum_flags = M_CSUM_UDPv4; 832 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); 833 } else 834 ui->ui_sum = 0; 835 ((struct ip *)ui)->ip_len = htons(sizeof (struct udpiphdr) + len); 836 ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ 837 ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ 838 UDP_STATINC(UDP_STAT_OPACKETS); 839 840 return (ip_output(m, inp->inp_options, ro, 841 inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST), 842 inp->inp_moptions, inp)); 843 844 release: 845 m_freem(m); 846 return (error); 847 } 848 849 static int 850 udp_attach(struct socket *so, int proto) 851 { 852 struct inpcb *inp; 853 int error; 854 855 KASSERT(sotoinpcb(so) == NULL); 856 857 /* Assign the lock (must happen even if we will error out). */ 858 sosetlock(so); 859 860 #ifdef MBUFTRACE 861 so->so_mowner = &udp_mowner; 862 so->so_rcv.sb_mowner = &udp_rx_mowner; 863 so->so_snd.sb_mowner = &udp_tx_mowner; 864 #endif 865 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 866 error = soreserve(so, udp_sendspace, udp_recvspace); 867 if (error) { 868 return error; 869 } 870 } 871 872 error = in_pcballoc(so, &udbtable); 873 if (error) { 874 return error; 875 } 876 inp = sotoinpcb(so); 877 inp->inp_ip.ip_ttl = ip_defttl; 878 KASSERT(solocked(so)); 879 880 return error; 881 } 882 883 static void 884 udp_detach(struct socket *so) 885 { 886 struct inpcb *inp; 887 888 KASSERT(solocked(so)); 889 inp = sotoinpcb(so); 890 KASSERT(inp != NULL); 891 in_pcbdetach(inp); 892 } 893 894 static int 895 udp_accept(struct socket *so, struct sockaddr *nam) 896 { 897 KASSERT(solocked(so)); 898 899 panic("udp_accept"); 900 901 return EOPNOTSUPP; 902 } 903 904 static int 905 udp_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 906 { 907 struct inpcb *inp = sotoinpcb(so); 908 struct sockaddr_in *sin = (struct sockaddr_in *)nam; 909 int error = 0; 910 int s; 911 912 KASSERT(solocked(so)); 913 KASSERT(inp != NULL); 914 KASSERT(nam != NULL); 915 916 s = splsoftnet(); 917 error = in_pcbbind(inp, sin, l); 918 splx(s); 919 920 return error; 921 } 922 923 static int 924 udp_listen(struct socket *so, struct lwp *l) 925 { 926 KASSERT(solocked(so)); 927 928 return EOPNOTSUPP; 929 } 930 931 static int 932 udp_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 933 { 934 struct inpcb *inp = sotoinpcb(so); 935 int error = 0; 936 int s; 937 938 KASSERT(solocked(so)); 939 KASSERT(inp != NULL); 940 KASSERT(nam != NULL); 941 942 s = splsoftnet(); 943 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); 944 if (! error) 945 soisconnected(so); 946 splx(s); 947 return error; 948 } 949 950 static int 951 udp_connect2(struct socket *so, struct socket *so2) 952 { 953 KASSERT(solocked(so)); 954 955 return EOPNOTSUPP; 956 } 957 958 static int 959 udp_disconnect(struct socket *so) 960 { 961 struct inpcb *inp = sotoinpcb(so); 962 int s; 963 964 KASSERT(solocked(so)); 965 KASSERT(inp != NULL); 966 967 s = splsoftnet(); 968 /*soisdisconnected(so);*/ 969 so->so_state &= ~SS_ISCONNECTED; /* XXX */ 970 in_pcbdisconnect(inp); 971 inp->inp_laddr = zeroin_addr; /* XXX */ 972 in_pcbstate(inp, INP_BOUND); /* XXX */ 973 splx(s); 974 975 return 0; 976 } 977 978 static int 979 udp_shutdown(struct socket *so) 980 { 981 int s; 982 983 KASSERT(solocked(so)); 984 985 s = splsoftnet(); 986 socantsendmore(so); 987 splx(s); 988 989 return 0; 990 } 991 992 static int 993 udp_abort(struct socket *so) 994 { 995 KASSERT(solocked(so)); 996 997 panic("udp_abort"); 998 999 return EOPNOTSUPP; 1000 } 1001 1002 static int 1003 udp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1004 { 1005 return in_control(so, cmd, nam, ifp); 1006 } 1007 1008 static int 1009 udp_stat(struct socket *so, struct stat *ub) 1010 { 1011 KASSERT(solocked(so)); 1012 1013 /* stat: don't bother with a blocksize. */ 1014 return 0; 1015 } 1016 1017 static int 1018 udp_peeraddr(struct socket *so, struct sockaddr *nam) 1019 { 1020 int s; 1021 1022 KASSERT(solocked(so)); 1023 KASSERT(sotoinpcb(so) != NULL); 1024 KASSERT(nam != NULL); 1025 1026 s = splsoftnet(); 1027 in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam); 1028 splx(s); 1029 1030 return 0; 1031 } 1032 1033 static int 1034 udp_sockaddr(struct socket *so, struct sockaddr *nam) 1035 { 1036 int s; 1037 1038 KASSERT(solocked(so)); 1039 KASSERT(sotoinpcb(so) != NULL); 1040 KASSERT(nam != NULL); 1041 1042 s = splsoftnet(); 1043 in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam); 1044 splx(s); 1045 1046 return 0; 1047 } 1048 1049 static int 1050 udp_rcvd(struct socket *so, int flags, struct lwp *l) 1051 { 1052 KASSERT(solocked(so)); 1053 1054 return EOPNOTSUPP; 1055 } 1056 1057 static int 1058 udp_recvoob(struct socket *so, struct mbuf *m, int flags) 1059 { 1060 KASSERT(solocked(so)); 1061 1062 return EOPNOTSUPP; 1063 } 1064 1065 static int 1066 udp_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 1067 struct mbuf *control, struct lwp *l) 1068 { 1069 struct inpcb *inp = sotoinpcb(so); 1070 int error = 0; 1071 struct in_addr laddr; /* XXX */ 1072 int s; 1073 1074 KASSERT(solocked(so)); 1075 KASSERT(inp != NULL); 1076 KASSERT(m != NULL); 1077 1078 if (control && control->m_len) { 1079 m_freem(control); 1080 m_freem(m); 1081 return EINVAL; 1082 } 1083 1084 memset(&laddr, 0, sizeof laddr); 1085 1086 s = splsoftnet(); 1087 if (nam) { 1088 laddr = inp->inp_laddr; /* XXX */ 1089 if ((so->so_state & SS_ISCONNECTED) != 0) { 1090 error = EISCONN; 1091 goto die; 1092 } 1093 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); 1094 if (error) 1095 goto die; 1096 } else { 1097 if ((so->so_state & SS_ISCONNECTED) == 0) { 1098 error = ENOTCONN; 1099 goto die; 1100 } 1101 } 1102 error = udp_output(m, inp); 1103 m = NULL; 1104 if (nam) { 1105 in_pcbdisconnect(inp); 1106 inp->inp_laddr = laddr; /* XXX */ 1107 in_pcbstate(inp, INP_BOUND); /* XXX */ 1108 } 1109 die: 1110 if (m) 1111 m_freem(m); 1112 1113 splx(s); 1114 return error; 1115 } 1116 1117 static int 1118 udp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 1119 { 1120 KASSERT(solocked(so)); 1121 1122 m_freem(m); 1123 m_freem(control); 1124 1125 return EOPNOTSUPP; 1126 } 1127 1128 static int 1129 udp_purgeif(struct socket *so, struct ifnet *ifp) 1130 { 1131 int s; 1132 1133 s = splsoftnet(); 1134 mutex_enter(softnet_lock); 1135 in_pcbpurgeif0(&udbtable, ifp); 1136 #ifdef NET_MPSAFE 1137 mutex_exit(softnet_lock); 1138 #endif 1139 in_purgeif(ifp); 1140 #ifdef NET_MPSAFE 1141 mutex_enter(softnet_lock); 1142 #endif 1143 in_pcbpurgeif(&udbtable, ifp); 1144 mutex_exit(softnet_lock); 1145 splx(s); 1146 1147 return 0; 1148 } 1149 1150 static int 1151 sysctl_net_inet_udp_stats(SYSCTLFN_ARGS) 1152 { 1153 1154 return (NETSTAT_SYSCTL(udpstat_percpu, UDP_NSTATS)); 1155 } 1156 1157 /* 1158 * Sysctl for udp variables. 1159 */ 1160 static void 1161 sysctl_net_inet_udp_setup(struct sysctllog **clog) 1162 { 1163 1164 sysctl_createv(clog, 0, NULL, NULL, 1165 CTLFLAG_PERMANENT, 1166 CTLTYPE_NODE, "inet", NULL, 1167 NULL, 0, NULL, 0, 1168 CTL_NET, PF_INET, CTL_EOL); 1169 sysctl_createv(clog, 0, NULL, NULL, 1170 CTLFLAG_PERMANENT, 1171 CTLTYPE_NODE, "udp", 1172 SYSCTL_DESCR("UDPv4 related settings"), 1173 NULL, 0, NULL, 0, 1174 CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL); 1175 1176 sysctl_createv(clog, 0, NULL, NULL, 1177 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1178 CTLTYPE_INT, "checksum", 1179 SYSCTL_DESCR("Compute UDP checksums"), 1180 NULL, 0, &udpcksum, 0, 1181 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM, 1182 CTL_EOL); 1183 sysctl_createv(clog, 0, NULL, NULL, 1184 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1185 CTLTYPE_INT, "sendspace", 1186 SYSCTL_DESCR("Default UDP send buffer size"), 1187 NULL, 0, &udp_sendspace, 0, 1188 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE, 1189 CTL_EOL); 1190 sysctl_createv(clog, 0, NULL, NULL, 1191 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1192 CTLTYPE_INT, "recvspace", 1193 SYSCTL_DESCR("Default UDP receive buffer size"), 1194 NULL, 0, &udp_recvspace, 0, 1195 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE, 1196 CTL_EOL); 1197 sysctl_createv(clog, 0, NULL, NULL, 1198 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1199 CTLTYPE_INT, "do_loopback_cksum", 1200 SYSCTL_DESCR("Perform UDP checksum on loopback"), 1201 NULL, 0, &udp_do_loopback_cksum, 0, 1202 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM, 1203 CTL_EOL); 1204 sysctl_createv(clog, 0, NULL, NULL, 1205 CTLFLAG_PERMANENT, 1206 CTLTYPE_STRUCT, "pcblist", 1207 SYSCTL_DESCR("UDP protocol control block list"), 1208 sysctl_inpcblist, 0, &udbtable, 0, 1209 CTL_NET, PF_INET, IPPROTO_UDP, CTL_CREATE, 1210 CTL_EOL); 1211 sysctl_createv(clog, 0, NULL, NULL, 1212 CTLFLAG_PERMANENT, 1213 CTLTYPE_STRUCT, "stats", 1214 SYSCTL_DESCR("UDP statistics"), 1215 sysctl_net_inet_udp_stats, 0, NULL, 0, 1216 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_STATS, 1217 CTL_EOL); 1218 } 1219 #endif 1220 1221 void 1222 udp_statinc(u_int stat) 1223 { 1224 1225 KASSERT(stat < UDP_NSTATS); 1226 UDP_STATINC(stat); 1227 } 1228 1229 #if defined(INET) && defined(IPSEC) 1230 /* 1231 * Returns: 1232 * 1 if the packet was processed 1233 * 0 if normal UDP processing should take place 1234 * -1 if an error occurent and m was freed 1235 */ 1236 static int 1237 udp4_espinudp(struct mbuf **mp, int off, struct sockaddr *src, 1238 struct socket *so) 1239 { 1240 size_t len; 1241 void *data; 1242 struct inpcb *inp; 1243 size_t skip = 0; 1244 size_t minlen; 1245 size_t iphdrlen; 1246 struct ip *ip; 1247 struct m_tag *tag; 1248 struct udphdr *udphdr; 1249 u_int16_t sport, dport; 1250 struct mbuf *m = *mp; 1251 1252 /* 1253 * Collapse the mbuf chain if the first mbuf is too short 1254 * The longest case is: UDP + non ESP marker + ESP 1255 */ 1256 minlen = off + sizeof(u_int64_t) + sizeof(struct esp); 1257 if (minlen > m->m_pkthdr.len) 1258 minlen = m->m_pkthdr.len; 1259 1260 if (m->m_len < minlen) { 1261 if ((*mp = m_pullup(m, minlen)) == NULL) { 1262 printf("udp4_espinudp: m_pullup failed\n"); 1263 return -1; 1264 } 1265 m = *mp; 1266 } 1267 1268 len = m->m_len - off; 1269 data = mtod(m, char *) + off; 1270 inp = sotoinpcb(so); 1271 1272 /* Ignore keepalive packets */ 1273 if ((len == 1) && (*(unsigned char *)data == 0xff)) { 1274 m_free(m); 1275 *mp = NULL; /* avoid any further processiong by caller ... */ 1276 return 1; 1277 } 1278 1279 /* 1280 * Check that the payload is long enough to hold 1281 * an ESP header and compute the length of encapsulation 1282 * header to remove 1283 */ 1284 if (inp->inp_flags & INP_ESPINUDP) { 1285 u_int32_t *st = (u_int32_t *)data; 1286 1287 if ((len <= sizeof(struct esp)) || (*st == 0)) 1288 return 0; /* Normal UDP processing */ 1289 1290 skip = sizeof(struct udphdr); 1291 } 1292 1293 if (inp->inp_flags & INP_ESPINUDP_NON_IKE) { 1294 u_int32_t *st = (u_int32_t *)data; 1295 1296 if ((len <= sizeof(u_int64_t) + sizeof(struct esp)) 1297 || ((st[0] | st[1]) != 0)) 1298 return 0; /* Normal UDP processing */ 1299 1300 skip = sizeof(struct udphdr) + sizeof(u_int64_t); 1301 } 1302 1303 /* 1304 * Get the UDP ports. They are handled in network 1305 * order everywhere in IPSEC_NAT_T code. 1306 */ 1307 udphdr = (struct udphdr *)((char *)data - skip); 1308 sport = udphdr->uh_sport; 1309 dport = udphdr->uh_dport; 1310 1311 /* 1312 * Remove the UDP header (and possibly the non ESP marker) 1313 * IP header lendth is iphdrlen 1314 * Before: 1315 * <--- off ---> 1316 * +----+------+-----+ 1317 * | IP | UDP | ESP | 1318 * +----+------+-----+ 1319 * <-skip-> 1320 * After: 1321 * +----+-----+ 1322 * | IP | ESP | 1323 * +----+-----+ 1324 * <-skip-> 1325 */ 1326 iphdrlen = off - sizeof(struct udphdr); 1327 memmove(mtod(m, char *) + skip, mtod(m, void *), iphdrlen); 1328 m_adj(m, skip); 1329 1330 ip = mtod(m, struct ip *); 1331 ip->ip_len = htons(ntohs(ip->ip_len) - skip); 1332 ip->ip_p = IPPROTO_ESP; 1333 1334 /* 1335 * We have modified the packet - it is now ESP, so we should not 1336 * return to UDP processing ... 1337 * 1338 * Add a PACKET_TAG_IPSEC_NAT_T_PORT tag to remember 1339 * the source UDP port. This is required if we want 1340 * to select the right SPD for multiple hosts behind 1341 * same NAT 1342 */ 1343 if ((tag = m_tag_get(PACKET_TAG_IPSEC_NAT_T_PORTS, 1344 sizeof(sport) + sizeof(dport), M_DONTWAIT)) == NULL) { 1345 printf("udp4_espinudp: m_tag_get failed\n"); 1346 m_freem(m); 1347 return -1; 1348 } 1349 ((u_int16_t *)(tag + 1))[0] = sport; 1350 ((u_int16_t *)(tag + 1))[1] = dport; 1351 m_tag_prepend(m, tag); 1352 1353 if (ipsec_used) 1354 ipsec4_common_input(m, iphdrlen, IPPROTO_ESP); 1355 /* XXX: else */ 1356 1357 /* We handled it, it shouldn't be handled by UDP */ 1358 *mp = NULL; /* avoid free by caller ... */ 1359 return 1; 1360 } 1361 #endif 1362 1363 PR_WRAP_USRREQS(udp) 1364 #define udp_attach udp_attach_wrapper 1365 #define udp_detach udp_detach_wrapper 1366 #define udp_accept udp_accept_wrapper 1367 #define udp_bind udp_bind_wrapper 1368 #define udp_listen udp_listen_wrapper 1369 #define udp_connect udp_connect_wrapper 1370 #define udp_connect2 udp_connect2_wrapper 1371 #define udp_disconnect udp_disconnect_wrapper 1372 #define udp_shutdown udp_shutdown_wrapper 1373 #define udp_abort udp_abort_wrapper 1374 #define udp_ioctl udp_ioctl_wrapper 1375 #define udp_stat udp_stat_wrapper 1376 #define udp_peeraddr udp_peeraddr_wrapper 1377 #define udp_sockaddr udp_sockaddr_wrapper 1378 #define udp_rcvd udp_rcvd_wrapper 1379 #define udp_recvoob udp_recvoob_wrapper 1380 #define udp_send udp_send_wrapper 1381 #define udp_sendoob udp_sendoob_wrapper 1382 #define udp_purgeif udp_purgeif_wrapper 1383 1384 const struct pr_usrreqs udp_usrreqs = { 1385 .pr_attach = udp_attach, 1386 .pr_detach = udp_detach, 1387 .pr_accept = udp_accept, 1388 .pr_bind = udp_bind, 1389 .pr_listen = udp_listen, 1390 .pr_connect = udp_connect, 1391 .pr_connect2 = udp_connect2, 1392 .pr_disconnect = udp_disconnect, 1393 .pr_shutdown = udp_shutdown, 1394 .pr_abort = udp_abort, 1395 .pr_ioctl = udp_ioctl, 1396 .pr_stat = udp_stat, 1397 .pr_peeraddr = udp_peeraddr, 1398 .pr_sockaddr = udp_sockaddr, 1399 .pr_rcvd = udp_rcvd, 1400 .pr_recvoob = udp_recvoob, 1401 .pr_send = udp_send, 1402 .pr_sendoob = udp_sendoob, 1403 .pr_purgeif = udp_purgeif, 1404 }; 1405
Indexes created Fri Sep 26 20:09:58 GMT 2025