1 /* 2 * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved. 3 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 4 * 5 * This code is derived from software contributed to The DragonFly Project 6 * by Jeffrey M. Hsu. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of The DragonFly Project nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific, prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95 67 * $FreeBSD: src/sys/netinet/udp_usrreq.c,v 1.64.2.18 2003/01/24 05:11:34 sam Exp $ 68 * $DragonFly: src/sys/netinet/udp_usrreq.c,v 1.47 2008/11/11 10:46:58 sephe Exp $ 69 */ 70 71 #include "opt_ipsec.h" 72 #include "opt_inet6.h" 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/malloc.h> 78 #include <sys/mbuf.h> 79 #include <sys/domain.h> 80 #include <sys/proc.h> 81 #include <sys/priv.h> 82 #include <sys/protosw.h> 83 #include <sys/socket.h> 84 #include <sys/socketvar.h> 85 #include <sys/sysctl.h> 86 #include <sys/syslog.h> 87 #include <sys/in_cksum.h> 88 89 #include <sys/thread2.h> 90 #include <sys/socketvar2.h> 91 #include <sys/serialize.h> 92 93 #include <machine/stdarg.h> 94 95 #include <net/if.h> 96 #include <net/route.h> 97 #include <net/netmsg2.h> 98 99 #include <netinet/in.h> 100 #include <netinet/in_systm.h> 101 #include <netinet/ip.h> 102 #ifdef INET6 103 #include <netinet/ip6.h> 104 #endif 105 #include <netinet/in_pcb.h> 106 #include <netinet/in_var.h> 107 #include <netinet/ip_var.h> 108 #ifdef INET6 109 #include <netinet6/ip6_var.h> 110 #endif 111 #include <netinet/ip_icmp.h> 112 #include <netinet/icmp_var.h> 113 #include <netinet/udp.h> 114 #include <netinet/udp_var.h> 115 116 #ifdef FAST_IPSEC 117 #include <netproto/ipsec/ipsec.h> 118 #endif 119 120 #ifdef IPSEC 121 #include <netinet6/ipsec.h> 122 #endif 123 124 /* 125 * UDP protocol implementation. 126 * Per RFC 768, August, 1980. 127 */ 128 #ifndef COMPAT_42 129 static int udpcksum = 1; 130 #else 131 static int udpcksum = 0; /* XXX */ 132 #endif 133 SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum, CTLFLAG_RW, 134 &udpcksum, 0, "Enable checksumming of UDP packets"); 135 136 int log_in_vain = 0; 137 SYSCTL_INT(_net_inet_udp, OID_AUTO, log_in_vain, CTLFLAG_RW, 138 &log_in_vain, 0, "Log all incoming UDP packets"); 139 140 static int blackhole = 0; 141 SYSCTL_INT(_net_inet_udp, OID_AUTO, blackhole, CTLFLAG_RW, 142 &blackhole, 0, "Do not send port unreachables for refused connects"); 143 144 static int strict_mcast_mship = 1; 145 SYSCTL_INT(_net_inet_udp, OID_AUTO, strict_mcast_mship, CTLFLAG_RW, 146 &strict_mcast_mship, 0, "Only send multicast to member sockets"); 147 148 struct inpcbinfo udbinfo; 149 150 static struct netisr_barrier *udbinfo_br; 151 static struct lwkt_serialize udbinfo_slize = LWKT_SERIALIZE_INITIALIZER; 152 153 #ifndef UDBHASHSIZE 154 #define UDBHASHSIZE 16 155 #endif 156 157 struct udpstat udpstat; /* from udp_var.h */ 158 SYSCTL_STRUCT(_net_inet_udp, UDPCTL_STATS, stats, CTLFLAG_RW, 159 &udpstat, udpstat, "UDP statistics (struct udpstat, netinet/udp_var.h)"); 160 161 static struct sockaddr_in udp_in = { sizeof udp_in, AF_INET }; 162 #ifdef INET6 163 struct udp_in6 { 164 struct sockaddr_in6 uin6_sin; 165 u_char uin6_init_done : 1; 166 } udp_in6 = { 167 { sizeof udp_in6.uin6_sin, AF_INET6 }, 168 0 169 }; 170 struct udp_ip6 { 171 struct ip6_hdr uip6_ip6; 172 u_char uip6_init_done : 1; 173 } udp_ip6; 174 #endif /* INET6 */ 175 176 static void udp_append (struct inpcb *last, struct ip *ip, 177 struct mbuf *n, int off); 178 #ifdef INET6 179 static void ip_2_ip6_hdr (struct ip6_hdr *ip6, struct ip *ip); 180 #endif 181 182 static int udp_connect_oncpu(struct socket *so, struct thread *td, 183 struct sockaddr_in *sin, struct sockaddr_in *if_sin); 184 static int udp_output (struct inpcb *, struct mbuf *, struct sockaddr *, 185 struct mbuf *, struct thread *); 186 187 void 188 udp_init(void) 189 { 190 in_pcbinfo_init(&udbinfo); 191 udbinfo.hashbase = hashinit(UDBHASHSIZE, M_PCB, &udbinfo.hashmask); 192 udbinfo.porthashbase = hashinit(UDBHASHSIZE, M_PCB, 193 &udbinfo.porthashmask); 194 udbinfo.wildcardhashbase = hashinit(UDBHASHSIZE, M_PCB, 195 &udbinfo.wildcardhashmask); 196 udbinfo.ipi_size = sizeof(struct inpcb); 197 198 udbinfo_br = netisr_barrier_create(); 199 } 200 201 /* 202 * Check multicast packets to make sure they are only sent to sockets with 203 * multicast memberships for the packet's destination address and arrival 204 * interface. Multicast packets to multicast-unaware sockets are also 205 * disallowed. 206 * 207 * Returns 0 if the packet is acceptable, -1 if it is not. 208 */ 209 static __inline int 210 check_multicast_membership(struct ip *ip, struct inpcb *inp, struct mbuf *m) 211 { 212 int mshipno; 213 struct ip_moptions *mopt; 214 215 if (strict_mcast_mship == 0 || 216 !IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) { 217 return (0); 218 } 219 mopt = inp->inp_moptions; 220 if (mopt == NULL) 221 return (-1); 222 for (mshipno = 0; mshipno < mopt->imo_num_memberships; ++mshipno) { 223 struct in_multi *maddr = mopt->imo_membership[mshipno]; 224 225 if (ip->ip_dst.s_addr == maddr->inm_addr.s_addr && 226 m->m_pkthdr.rcvif == maddr->inm_ifp) { 227 return (0); 228 } 229 } 230 return (-1); 231 } 232 233 int 234 udp_input(struct mbuf **mp, int *offp, int proto) 235 { 236 int iphlen; 237 struct ip *ip; 238 struct udphdr *uh; 239 struct inpcb *inp; 240 struct mbuf *m; 241 struct mbuf *opts = NULL; 242 int len, off; 243 struct ip save_ip; 244 struct sockaddr *append_sa; 245 246 off = *offp; 247 m = *mp; 248 *mp = NULL; 249 250 iphlen = off; 251 udpstat.udps_ipackets++; 252 253 /* 254 * Strip IP options, if any; should skip this, 255 * make available to user, and use on returned packets, 256 * but we don't yet have a way to check the checksum 257 * with options still present. 258 */ 259 if (iphlen > sizeof(struct ip)) { 260 ip_stripoptions(m); 261 iphlen = sizeof(struct ip); 262 } 263 264 /* 265 * IP and UDP headers are together in first mbuf. 266 * Already checked and pulled up in ip_demux(). 267 */ 268 KASSERT(m->m_len >= iphlen + sizeof(struct udphdr), 269 ("UDP header not in one mbuf")); 270 271 ip = mtod(m, struct ip *); 272 uh = (struct udphdr *)((caddr_t)ip + iphlen); 273 274 /* destination port of 0 is illegal, based on RFC768. */ 275 if (uh->uh_dport == 0) 276 goto bad; 277 278 /* 279 * Make mbuf data length reflect UDP length. 280 * If not enough data to reflect UDP length, drop. 281 */ 282 len = ntohs((u_short)uh->uh_ulen); 283 if (ip->ip_len != len) { 284 if (len > ip->ip_len || len < sizeof(struct udphdr)) { 285 udpstat.udps_badlen++; 286 goto bad; 287 } 288 m_adj(m, len - ip->ip_len); 289 /* ip->ip_len = len; */ 290 } 291 /* 292 * Save a copy of the IP header in case we want restore it 293 * for sending an ICMP error message in response. 294 */ 295 save_ip = *ip; 296 297 /* 298 * Checksum extended UDP header and data. 299 */ 300 if (uh->uh_sum) { 301 if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) { 302 if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR) 303 uh->uh_sum = m->m_pkthdr.csum_data; 304 else 305 uh->uh_sum = in_pseudo(ip->ip_src.s_addr, 306 ip->ip_dst.s_addr, htonl((u_short)len + 307 m->m_pkthdr.csum_data + IPPROTO_UDP)); 308 uh->uh_sum ^= 0xffff; 309 } else { 310 char b[9]; 311 312 bcopy(((struct ipovly *)ip)->ih_x1, b, 9); 313 bzero(((struct ipovly *)ip)->ih_x1, 9); 314 ((struct ipovly *)ip)->ih_len = uh->uh_ulen; 315 uh->uh_sum = in_cksum(m, len + sizeof(struct ip)); 316 bcopy(b, ((struct ipovly *)ip)->ih_x1, 9); 317 } 318 if (uh->uh_sum) { 319 udpstat.udps_badsum++; 320 m_freem(m); 321 return(IPPROTO_DONE); 322 } 323 } else 324 udpstat.udps_nosum++; 325 326 if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) || 327 in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) { 328 struct inpcb *last; 329 330 /* 331 * Deliver a multicast or broadcast datagram to *all* sockets 332 * for which the local and remote addresses and ports match 333 * those of the incoming datagram. This allows more than 334 * one process to receive multi/broadcasts on the same port. 335 * (This really ought to be done for unicast datagrams as 336 * well, but that would cause problems with existing 337 * applications that open both address-specific sockets and 338 * a wildcard socket listening to the same port -- they would 339 * end up receiving duplicates of every unicast datagram. 340 * Those applications open the multiple sockets to overcome an 341 * inadequacy of the UDP socket interface, but for backwards 342 * compatibility we avoid the problem here rather than 343 * fixing the interface. Maybe 4.5BSD will remedy this?) 344 */ 345 346 /* 347 * Construct sockaddr format source address. 348 */ 349 udp_in.sin_port = uh->uh_sport; 350 udp_in.sin_addr = ip->ip_src; 351 /* 352 * Locate pcb(s) for datagram. 353 * (Algorithm copied from raw_intr().) 354 */ 355 last = NULL; 356 #ifdef INET6 357 udp_in6.uin6_init_done = udp_ip6.uip6_init_done = 0; 358 #endif 359 LIST_FOREACH(inp, &udbinfo.pcblisthead, inp_list) { 360 KKASSERT((inp->inp_flags & INP_PLACEMARKER) == 0); 361 #ifdef INET6 362 if (!(inp->inp_vflag & INP_IPV4)) 363 continue; 364 #endif 365 if (inp->inp_lport != uh->uh_dport) 366 continue; 367 if (inp->inp_laddr.s_addr != INADDR_ANY) { 368 if (inp->inp_laddr.s_addr != 369 ip->ip_dst.s_addr) 370 continue; 371 } 372 if (inp->inp_faddr.s_addr != INADDR_ANY) { 373 if (inp->inp_faddr.s_addr != 374 ip->ip_src.s_addr || 375 inp->inp_fport != uh->uh_sport) 376 continue; 377 } 378 379 if (check_multicast_membership(ip, inp, m) < 0) 380 continue; 381 382 if (last != NULL) { 383 struct mbuf *n; 384 385 #ifdef IPSEC 386 /* check AH/ESP integrity. */ 387 if (ipsec4_in_reject_so(m, last->inp_socket)) 388 ipsecstat.in_polvio++; 389 /* do not inject data to pcb */ 390 else 391 #endif /*IPSEC*/ 392 #ifdef FAST_IPSEC 393 /* check AH/ESP integrity. */ 394 if (ipsec4_in_reject(m, last)) 395 ; 396 else 397 #endif /*FAST_IPSEC*/ 398 if ((n = m_copypacket(m, MB_DONTWAIT)) != NULL) 399 udp_append(last, ip, n, 400 iphlen + 401 sizeof(struct udphdr)); 402 } 403 last = inp; 404 /* 405 * Don't look for additional matches if this one does 406 * not have either the SO_REUSEPORT or SO_REUSEADDR 407 * socket options set. This heuristic avoids searching 408 * through all pcbs in the common case of a non-shared 409 * port. It * assumes that an application will never 410 * clear these options after setting them. 411 */ 412 if (!(last->inp_socket->so_options & 413 (SO_REUSEPORT | SO_REUSEADDR))) 414 break; 415 } 416 417 if (last == NULL) { 418 /* 419 * No matching pcb found; discard datagram. 420 * (No need to send an ICMP Port Unreachable 421 * for a broadcast or multicast datgram.) 422 */ 423 udpstat.udps_noportbcast++; 424 goto bad; 425 } 426 #ifdef IPSEC 427 /* check AH/ESP integrity. */ 428 if (ipsec4_in_reject_so(m, last->inp_socket)) { 429 ipsecstat.in_polvio++; 430 goto bad; 431 } 432 #endif /*IPSEC*/ 433 #ifdef FAST_IPSEC 434 /* check AH/ESP integrity. */ 435 if (ipsec4_in_reject(m, last)) 436 goto bad; 437 #endif /*FAST_IPSEC*/ 438 udp_append(last, ip, m, iphlen + sizeof(struct udphdr)); 439 return(IPPROTO_DONE); 440 } 441 /* 442 * Locate pcb for datagram. 443 */ 444 inp = in_pcblookup_hash(&udbinfo, ip->ip_src, uh->uh_sport, 445 ip->ip_dst, uh->uh_dport, 1, m->m_pkthdr.rcvif); 446 if (inp == NULL) { 447 if (log_in_vain) { 448 char buf[sizeof "aaa.bbb.ccc.ddd"]; 449 450 strcpy(buf, inet_ntoa(ip->ip_dst)); 451 log(LOG_INFO, 452 "Connection attempt to UDP %s:%d from %s:%d\n", 453 buf, ntohs(uh->uh_dport), inet_ntoa(ip->ip_src), 454 ntohs(uh->uh_sport)); 455 } 456 udpstat.udps_noport++; 457 if (m->m_flags & (M_BCAST | M_MCAST)) { 458 udpstat.udps_noportbcast++; 459 goto bad; 460 } 461 if (blackhole) 462 goto bad; 463 #ifdef ICMP_BANDLIM 464 if (badport_bandlim(BANDLIM_ICMP_UNREACH) < 0) 465 goto bad; 466 #endif 467 *ip = save_ip; 468 ip->ip_len += iphlen; 469 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0); 470 return(IPPROTO_DONE); 471 } 472 #ifdef IPSEC 473 if (ipsec4_in_reject_so(m, inp->inp_socket)) { 474 ipsecstat.in_polvio++; 475 goto bad; 476 } 477 #endif /*IPSEC*/ 478 #ifdef FAST_IPSEC 479 if (ipsec4_in_reject(m, inp)) 480 goto bad; 481 #endif /*FAST_IPSEC*/ 482 /* 483 * Check the minimum TTL for socket. 484 */ 485 if (ip->ip_ttl < inp->inp_ip_minttl) 486 goto bad; 487 488 /* 489 * Construct sockaddr format source address. 490 * Stuff source address and datagram in user buffer. 491 */ 492 udp_in.sin_port = uh->uh_sport; 493 udp_in.sin_addr = ip->ip_src; 494 if ((inp->inp_flags & INP_CONTROLOPTS) || 495 (inp->inp_socket->so_options & SO_TIMESTAMP)) { 496 #ifdef INET6 497 if (inp->inp_vflag & INP_IPV6) { 498 int savedflags; 499 500 ip_2_ip6_hdr(&udp_ip6.uip6_ip6, ip); 501 savedflags = inp->inp_flags; 502 inp->inp_flags &= ~INP_UNMAPPABLEOPTS; 503 ip6_savecontrol(inp, &opts, &udp_ip6.uip6_ip6, m); 504 inp->inp_flags = savedflags; 505 } else 506 #endif 507 ip_savecontrol(inp, &opts, ip, m); 508 } 509 m_adj(m, iphlen + sizeof(struct udphdr)); 510 #ifdef INET6 511 if (inp->inp_vflag & INP_IPV6) { 512 in6_sin_2_v4mapsin6(&udp_in, &udp_in6.uin6_sin); 513 append_sa = (struct sockaddr *)&udp_in6; 514 } else 515 #endif 516 append_sa = (struct sockaddr *)&udp_in; 517 518 lwkt_gettoken(&inp->inp_socket->so_rcv.ssb_token); 519 if (ssb_appendaddr(&inp->inp_socket->so_rcv, append_sa, m, opts) == 0) { 520 udpstat.udps_fullsock++; 521 lwkt_reltoken(&inp->inp_socket->so_rcv.ssb_token); 522 goto bad; 523 } 524 lwkt_reltoken(&inp->inp_socket->so_rcv.ssb_token); 525 sorwakeup(inp->inp_socket); 526 return(IPPROTO_DONE); 527 bad: 528 m_freem(m); 529 if (opts) 530 m_freem(opts); 531 return(IPPROTO_DONE); 532 } 533 534 #ifdef INET6 535 static void 536 ip_2_ip6_hdr(struct ip6_hdr *ip6, struct ip *ip) 537 { 538 bzero(ip6, sizeof *ip6); 539 540 ip6->ip6_vfc = IPV6_VERSION; 541 ip6->ip6_plen = ip->ip_len; 542 ip6->ip6_nxt = ip->ip_p; 543 ip6->ip6_hlim = ip->ip_ttl; 544 ip6->ip6_src.s6_addr32[2] = ip6->ip6_dst.s6_addr32[2] = 545 IPV6_ADDR_INT32_SMP; 546 ip6->ip6_src.s6_addr32[3] = ip->ip_src.s_addr; 547 ip6->ip6_dst.s6_addr32[3] = ip->ip_dst.s_addr; 548 } 549 #endif 550 551 /* 552 * subroutine of udp_input(), mainly for source code readability. 553 * caller must properly init udp_ip6 and udp_in6 beforehand. 554 */ 555 static void 556 udp_append(struct inpcb *last, struct ip *ip, struct mbuf *n, int off) 557 { 558 struct sockaddr *append_sa; 559 struct mbuf *opts = NULL; 560 561 if (last->inp_flags & INP_CONTROLOPTS || 562 last->inp_socket->so_options & SO_TIMESTAMP) { 563 #ifdef INET6 564 if (last->inp_vflag & INP_IPV6) { 565 int savedflags; 566 567 if (udp_ip6.uip6_init_done == 0) { 568 ip_2_ip6_hdr(&udp_ip6.uip6_ip6, ip); 569 udp_ip6.uip6_init_done = 1; 570 } 571 savedflags = last->inp_flags; 572 last->inp_flags &= ~INP_UNMAPPABLEOPTS; 573 ip6_savecontrol(last, &opts, &udp_ip6.uip6_ip6, n); 574 last->inp_flags = savedflags; 575 } else 576 #endif 577 ip_savecontrol(last, &opts, ip, n); 578 } 579 #ifdef INET6 580 if (last->inp_vflag & INP_IPV6) { 581 if (udp_in6.uin6_init_done == 0) { 582 in6_sin_2_v4mapsin6(&udp_in, &udp_in6.uin6_sin); 583 udp_in6.uin6_init_done = 1; 584 } 585 append_sa = (struct sockaddr *)&udp_in6.uin6_sin; 586 } else 587 #endif 588 append_sa = (struct sockaddr *)&udp_in; 589 m_adj(n, off); 590 lwkt_gettoken(&last->inp_socket->so_rcv.ssb_token); 591 if (ssb_appendaddr(&last->inp_socket->so_rcv, append_sa, n, opts) == 0) { 592 m_freem(n); 593 if (opts) 594 m_freem(opts); 595 udpstat.udps_fullsock++; 596 } else { 597 sorwakeup(last->inp_socket); 598 } 599 lwkt_reltoken(&last->inp_socket->so_rcv.ssb_token); 600 } 601 602 /* 603 * Notify a udp user of an asynchronous error; 604 * just wake up so that he can collect error status. 605 */ 606 void 607 udp_notify(struct inpcb *inp, int error) 608 { 609 inp->inp_socket->so_error = error; 610 sorwakeup(inp->inp_socket); 611 sowwakeup(inp->inp_socket); 612 } 613 614 struct netmsg_udp_notify { 615 struct netmsg_base base; 616 void (*nm_notify)(struct inpcb *, int); 617 struct in_addr nm_faddr; 618 int nm_arg; 619 }; 620 621 static void 622 udp_notifyall_oncpu(netmsg_t msg) 623 { 624 struct netmsg_udp_notify *nm = (struct netmsg_udp_notify *)msg; 625 #if 0 626 int nextcpu; 627 #endif 628 629 in_pcbnotifyall(&udbinfo.pcblisthead, nm->nm_faddr, 630 nm->nm_arg, nm->nm_notify); 631 lwkt_replymsg(&nm->base.lmsg, 0); 632 633 #if 0 634 /* XXX currently udp only runs on cpu 0 */ 635 nextcpu = mycpuid + 1; 636 if (nextcpu < ncpus2) 637 lwkt_forwardmsg(cpu_portfn(nextcpu), &nm->base.lmsg); 638 else 639 lwkt_replymsg(&nmsg->base.lmsg, 0); 640 #endif 641 } 642 643 static void 644 udp_rtchange(struct inpcb *inp, int err) 645 { 646 #ifdef SMP 647 /* XXX Nuke this, once UDP inpcbs are CPU localized */ 648 if (inp->inp_route.ro_rt && inp->inp_route.ro_rt->rt_cpuid == mycpuid) { 649 rtfree(inp->inp_route.ro_rt); 650 inp->inp_route.ro_rt = NULL; 651 /* 652 * A new route can be allocated the next time 653 * output is attempted. 654 */ 655 } 656 #else 657 in_rtchange(inp, err); 658 #endif 659 } 660 661 void 662 udp_ctlinput(netmsg_t msg) 663 { 664 struct sockaddr *sa = msg->ctlinput.nm_arg; 665 struct ip *ip = msg->ctlinput.nm_extra; 666 int cmd = msg->ctlinput.nm_cmd; 667 struct udphdr *uh; 668 void (*notify) (struct inpcb *, int) = udp_notify; 669 struct in_addr faddr; 670 struct inpcb *inp; 671 672 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 673 674 faddr = ((struct sockaddr_in *)sa)->sin_addr; 675 if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY) 676 goto done; 677 678 if (PRC_IS_REDIRECT(cmd)) { 679 ip = NULL; 680 notify = udp_rtchange; 681 } else if (cmd == PRC_HOSTDEAD) { 682 ip = NULL; 683 } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) { 684 goto done; 685 } 686 687 if (ip) { 688 uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2)); 689 inp = in_pcblookup_hash(&udbinfo, faddr, uh->uh_dport, 690 ip->ip_src, uh->uh_sport, 0, NULL); 691 if (inp != NULL && inp->inp_socket != NULL) 692 (*notify)(inp, inetctlerrmap[cmd]); 693 } else if (PRC_IS_REDIRECT(cmd)) { 694 struct netmsg_udp_notify *nm; 695 696 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 697 nm = kmalloc(sizeof(*nm), M_LWKTMSG, M_INTWAIT); 698 netmsg_init(&nm->base, NULL, &netisr_afree_rport, 699 0, udp_notifyall_oncpu); 700 nm->nm_faddr = faddr; 701 nm->nm_arg = inetctlerrmap[cmd]; 702 nm->nm_notify = notify; 703 lwkt_sendmsg(cpu_portfn(0), &nm->base.lmsg); 704 } else { 705 /* 706 * XXX We should forward msg upon PRC_HOSTHEAD and ip == NULL, 707 * once UDP inpcbs are CPU localized 708 */ 709 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 710 in_pcbnotifyall(&udbinfo.pcblisthead, faddr, inetctlerrmap[cmd], 711 notify); 712 } 713 done: 714 lwkt_replymsg(&msg->lmsg, 0); 715 } 716 717 static int 718 udp_pcblist(SYSCTL_HANDLER_ARGS) 719 { 720 struct xinpcb *xi; 721 int error, nxi, i; 722 723 udbinfo_lock(); 724 error = in_pcblist_global_nomarker(oidp, arg1, arg2, req, &xi, &nxi); 725 udbinfo_unlock(); 726 727 if (error) { 728 KKASSERT(xi == NULL); 729 return error; 730 } 731 if (nxi == 0) { 732 KKASSERT(xi == NULL); 733 return 0; 734 } 735 736 for (i = 0; i < nxi; ++i) { 737 error = SYSCTL_OUT(req, &xi[i], sizeof(xi[i])); 738 if (error) 739 break; 740 } 741 kfree(xi, M_TEMP); 742 743 return error; 744 } 745 SYSCTL_PROC(_net_inet_udp, UDPCTL_PCBLIST, pcblist, CTLFLAG_RD, &udbinfo, 0, 746 udp_pcblist, "S,xinpcb", "List of active UDP sockets"); 747 748 static int 749 udp_getcred(SYSCTL_HANDLER_ARGS) 750 { 751 struct sockaddr_in addrs[2]; 752 struct ucred cred0, *cred = NULL; 753 struct inpcb *inp; 754 int error; 755 756 error = priv_check(req->td, PRIV_ROOT); 757 if (error) 758 return (error); 759 error = SYSCTL_IN(req, addrs, sizeof addrs); 760 if (error) 761 return (error); 762 763 udbinfo_lock(); 764 inp = in_pcblookup_hash(&udbinfo, addrs[1].sin_addr, addrs[1].sin_port, 765 addrs[0].sin_addr, addrs[0].sin_port, 1, NULL); 766 if (inp == NULL || inp->inp_socket == NULL) { 767 error = ENOENT; 768 } else { 769 if (inp->inp_socket->so_cred != NULL) { 770 cred0 = *(inp->inp_socket->so_cred); 771 cred = &cred0; 772 } 773 } 774 udbinfo_unlock(); 775 776 if (error) 777 return error; 778 779 return SYSCTL_OUT(req, cred, sizeof(struct ucred)); 780 } 781 782 SYSCTL_PROC(_net_inet_udp, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW, 783 0, 0, udp_getcred, "S,ucred", "Get the ucred of a UDP connection"); 784 785 static int 786 udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *dstaddr, 787 struct mbuf *control, struct thread *td) 788 { 789 struct udpiphdr *ui; 790 int len = m->m_pkthdr.len; 791 struct sockaddr_in *sin; /* really is initialized before use */ 792 int error = 0, lport_any = 0; 793 794 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) { 795 error = EMSGSIZE; 796 goto release; 797 } 798 799 if (inp->inp_lport == 0) { /* unbound socket */ 800 error = in_pcbbind(inp, NULL, td); 801 if (error) 802 goto release; 803 804 udbinfo_barrier_set(); 805 in_pcbinswildcardhash(inp); 806 udbinfo_barrier_rem(); 807 lport_any = 1; 808 } 809 810 if (dstaddr != NULL) { /* destination address specified */ 811 if (inp->inp_faddr.s_addr != INADDR_ANY) { 812 /* already connected */ 813 error = EISCONN; 814 goto release; 815 } 816 sin = (struct sockaddr_in *)dstaddr; 817 if (!prison_remote_ip(td, (struct sockaddr *)&sin)) { 818 error = EAFNOSUPPORT; /* IPv6 only jail */ 819 goto release; 820 } 821 } else { 822 if (inp->inp_faddr.s_addr == INADDR_ANY) { 823 /* no destination specified and not already connected */ 824 error = ENOTCONN; 825 goto release; 826 } 827 sin = NULL; 828 } 829 830 /* 831 * Calculate data length and get a mbuf 832 * for UDP and IP headers. 833 */ 834 M_PREPEND(m, sizeof(struct udpiphdr), MB_DONTWAIT); 835 if (m == NULL) { 836 error = ENOBUFS; 837 goto release; 838 } 839 840 /* 841 * Fill in mbuf with extended UDP header 842 * and addresses and length put into network format. 843 */ 844 ui = mtod(m, struct udpiphdr *); 845 bzero(ui->ui_x1, sizeof ui->ui_x1); /* XXX still needed? */ 846 ui->ui_pr = IPPROTO_UDP; 847 848 /* 849 * Set destination address. 850 */ 851 if (dstaddr != NULL) { /* use specified destination */ 852 ui->ui_dst = sin->sin_addr; 853 ui->ui_dport = sin->sin_port; 854 } else { /* use connected destination */ 855 ui->ui_dst = inp->inp_faddr; 856 ui->ui_dport = inp->inp_fport; 857 } 858 859 /* 860 * Set source address. 861 */ 862 if (inp->inp_laddr.s_addr == INADDR_ANY) { 863 struct sockaddr_in *if_sin; 864 865 if (dstaddr == NULL) { 866 /* 867 * connect() had (or should have) failed because 868 * the interface had no IP address, but the 869 * application proceeded to call send() anyways. 870 */ 871 error = ENOTCONN; 872 goto release; 873 } 874 875 /* Look up outgoing interface. */ 876 if ((error = in_pcbladdr(inp, dstaddr, &if_sin, td))) 877 goto release; 878 ui->ui_src = if_sin->sin_addr; /* use address of interface */ 879 } else { 880 ui->ui_src = inp->inp_laddr; /* use non-null bound address */ 881 } 882 ui->ui_sport = inp->inp_lport; 883 KASSERT(inp->inp_lport != 0, ("inp lport should have been bound")); 884 885 ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr)); 886 887 /* 888 * Set up checksum and output datagram. 889 */ 890 if (udpcksum) { 891 ui->ui_sum = in_pseudo(ui->ui_src.s_addr, ui->ui_dst.s_addr, 892 htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP)); 893 m->m_pkthdr.csum_flags = CSUM_UDP; 894 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); 895 } else { 896 ui->ui_sum = 0; 897 } 898 ((struct ip *)ui)->ip_len = sizeof(struct udpiphdr) + len; 899 ((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */ 900 ((struct ip *)ui)->ip_tos = inp->inp_ip_tos; /* XXX */ 901 udpstat.udps_opackets++; 902 903 error = ip_output(m, inp->inp_options, &inp->inp_route, 904 (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST)) | 905 IP_DEBUGROUTE, 906 inp->inp_moptions, inp); 907 908 /* 909 * If this is the first data gram sent on an unbound and unconnected 910 * UDP socket, lport will be changed in this function. If target 911 * CPU after this lport changing is no longer the current CPU, then 912 * free the route entry allocated on the current CPU. 913 */ 914 if (lport_any) { 915 if (udp_addrcpu(inp->inp_faddr.s_addr, inp->inp_fport, 916 inp->inp_laddr.s_addr, inp->inp_lport) != mycpuid) { 917 #ifdef notyet 918 struct route *ro = &inp->inp_route; 919 920 if (ro->ro_rt != NULL) 921 RTFREE(ro->ro_rt); 922 bzero(ro, sizeof(*ro)); 923 #else 924 panic("UDP activity should only be in netisr0"); 925 #endif 926 } 927 } 928 return (error); 929 930 release: 931 m_freem(m); 932 return (error); 933 } 934 935 u_long udp_sendspace = 9216; /* really max datagram size */ 936 /* 40 1K datagrams */ 937 SYSCTL_INT(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLFLAG_RW, 938 &udp_sendspace, 0, "Maximum outgoing UDP datagram size"); 939 940 u_long udp_recvspace = 40 * (1024 + 941 #ifdef INET6 942 sizeof(struct sockaddr_in6) 943 #else 944 sizeof(struct sockaddr_in) 945 #endif 946 ); 947 SYSCTL_INT(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW, 948 &udp_recvspace, 0, "Maximum incoming UDP datagram size"); 949 950 /* 951 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort() 952 * will sofree() it when we return. 953 */ 954 static void 955 udp_abort(netmsg_t msg) 956 { 957 struct socket *so = msg->abort.base.nm_so; 958 struct inpcb *inp; 959 int error; 960 961 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 962 963 inp = so->so_pcb; 964 if (inp) { 965 soisdisconnected(so); 966 967 udbinfo_barrier_set(); 968 in_pcbdetach(inp); 969 udbinfo_barrier_rem(); 970 error = 0; 971 } else { 972 error = EINVAL; 973 } 974 lwkt_replymsg(&msg->abort.base.lmsg, error); 975 } 976 977 static void 978 udp_attach(netmsg_t msg) 979 { 980 struct socket *so = msg->attach.base.nm_so; 981 struct pru_attach_info *ai = msg->attach.nm_ai; 982 struct inpcb *inp; 983 int error; 984 985 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 986 987 inp = so->so_pcb; 988 if (inp != NULL) { 989 error = EINVAL; 990 goto out; 991 } 992 error = soreserve(so, udp_sendspace, udp_recvspace, ai->sb_rlimit); 993 if (error) 994 goto out; 995 996 udbinfo_barrier_set(); 997 error = in_pcballoc(so, &udbinfo); 998 udbinfo_barrier_rem(); 999 1000 if (error) 1001 goto out; 1002 1003 /* 1004 * Set default port for protocol processing prior to bind/connect. 1005 */ 1006 sosetport(so, cpu_portfn(0)); 1007 1008 inp = (struct inpcb *)so->so_pcb; 1009 inp->inp_vflag |= INP_IPV4; 1010 inp->inp_ip_ttl = ip_defttl; 1011 error = 0; 1012 out: 1013 lwkt_replymsg(&msg->attach.base.lmsg, error); 1014 } 1015 1016 static void 1017 udp_bind(netmsg_t msg) 1018 { 1019 struct socket *so = msg->bind.base.nm_so; 1020 struct sockaddr *nam = msg->bind.nm_nam; 1021 struct thread *td = msg->bind.nm_td; 1022 struct sockaddr_in *sin = (struct sockaddr_in *)nam; 1023 struct inpcb *inp; 1024 int error; 1025 1026 inp = so->so_pcb; 1027 if (inp) { 1028 error = in_pcbbind(inp, nam, td); 1029 if (error == 0) { 1030 if (sin->sin_addr.s_addr != INADDR_ANY) 1031 inp->inp_flags |= INP_WASBOUND_NOTANY; 1032 1033 udbinfo_barrier_set(); 1034 in_pcbinswildcardhash(inp); 1035 udbinfo_barrier_rem(); 1036 } 1037 } else { 1038 error = EINVAL; 1039 } 1040 lwkt_replymsg(&msg->bind.base.lmsg, error); 1041 } 1042 1043 static void 1044 udp_connect(netmsg_t msg) 1045 { 1046 struct socket *so = msg->connect.base.nm_so; 1047 struct sockaddr *nam = msg->connect.nm_nam; 1048 struct thread *td = msg->connect.nm_td; 1049 struct inpcb *inp; 1050 struct sockaddr_in *sin = (struct sockaddr_in *)nam; 1051 struct sockaddr_in *if_sin; 1052 lwkt_port_t port; 1053 int error; 1054 1055 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 1056 1057 inp = so->so_pcb; 1058 if (inp == NULL) { 1059 error = EINVAL; 1060 goto out; 1061 } 1062 1063 if (msg->connect.nm_reconnect & NMSG_RECONNECT_RECONNECT) { 1064 panic("UDP does not support RECONNECT\n"); 1065 #ifdef notyet 1066 msg->connect.nm_reconnect &= ~NMSG_RECONNECT_RECONNECT; 1067 in_pcblink(inp, &udbinfo); 1068 #endif 1069 } 1070 1071 if (inp->inp_faddr.s_addr != INADDR_ANY) { 1072 error = EISCONN; 1073 goto out; 1074 } 1075 error = 0; 1076 1077 /* 1078 * Bind if we have to 1079 */ 1080 if (td->td_proc && td->td_proc->p_ucred->cr_prison != NULL && 1081 inp->inp_laddr.s_addr == INADDR_ANY) { 1082 error = in_pcbbind(inp, NULL, td); 1083 if (error) 1084 goto out; 1085 } 1086 1087 /* 1088 * Calculate the correct protocol processing thread. The connect 1089 * operation must run there. 1090 */ 1091 error = in_pcbladdr(inp, nam, &if_sin, td); 1092 if (error) 1093 goto out; 1094 if (!prison_remote_ip(td, nam)) { 1095 error = EAFNOSUPPORT; /* IPv6 only jail */ 1096 goto out; 1097 } 1098 1099 port = udp_addrport(sin->sin_addr.s_addr, sin->sin_port, 1100 inp->inp_laddr.s_addr, inp->inp_lport); 1101 #ifdef SMP 1102 if (port != &curthread->td_msgport) { 1103 #ifdef notyet 1104 struct route *ro = &inp->inp_route; 1105 1106 /* 1107 * in_pcbladdr() may have allocated a route entry for us 1108 * on the current CPU, but we need a route entry on the 1109 * inpcb's owner CPU, so free it here. 1110 */ 1111 if (ro->ro_rt != NULL) 1112 RTFREE(ro->ro_rt); 1113 bzero(ro, sizeof(*ro)); 1114 1115 /* 1116 * We are moving the protocol processing port the socket 1117 * is on, we have to unlink here and re-link on the 1118 * target cpu. 1119 */ 1120 in_pcbunlink(so->so_pcb, &udbinfo); 1121 /* in_pcbunlink(so->so_pcb, &udbinfo[mycpu->gd_cpuid]); */ 1122 sosetport(so, port); 1123 msg->connect.nm_reconnect |= NMSG_RECONNECT_RECONNECT; 1124 msg->connect.base.nm_dispatch = udp_connect; 1125 1126 lwkt_forwardmsg(port, &msg->connect.base.lmsg); 1127 /* msg invalid now */ 1128 return; 1129 #else 1130 panic("UDP activity should only be in netisr0"); 1131 #endif 1132 } 1133 #endif 1134 KKASSERT(port == &curthread->td_msgport); 1135 error = udp_connect_oncpu(so, td, sin, if_sin); 1136 out: 1137 KKASSERT(msg->connect.nm_m == NULL); 1138 lwkt_replymsg(&msg->connect.base.lmsg, error); 1139 } 1140 1141 static int 1142 udp_connect_oncpu(struct socket *so, struct thread *td, 1143 struct sockaddr_in *sin, struct sockaddr_in *if_sin) 1144 { 1145 struct inpcb *inp; 1146 int error; 1147 1148 udbinfo_barrier_set(); 1149 1150 inp = so->so_pcb; 1151 if (inp->inp_flags & INP_WILDCARD) 1152 in_pcbremwildcardhash(inp); 1153 error = in_pcbconnect(inp, (struct sockaddr *)sin, td); 1154 1155 if (error == 0) { 1156 /* 1157 * No more errors can occur, finish adjusting the socket 1158 * and change the processing port to reflect the connected 1159 * socket. Once set we can no longer safely mess with the 1160 * socket. 1161 */ 1162 soisconnected(so); 1163 } else if (error == EAFNOSUPPORT) { /* connection dissolved */ 1164 /* 1165 * Follow traditional BSD behavior and retain 1166 * the local port binding. But, fix the old misbehavior 1167 * of overwriting any previously bound local address. 1168 */ 1169 if (!(inp->inp_flags & INP_WASBOUND_NOTANY)) 1170 inp->inp_laddr.s_addr = INADDR_ANY; 1171 in_pcbinswildcardhash(inp); 1172 } 1173 1174 udbinfo_barrier_rem(); 1175 return error; 1176 } 1177 1178 static void 1179 udp_detach(netmsg_t msg) 1180 { 1181 struct socket *so = msg->detach.base.nm_so; 1182 struct inpcb *inp; 1183 int error; 1184 1185 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 1186 1187 inp = so->so_pcb; 1188 if (inp) { 1189 udbinfo_barrier_set(); 1190 in_pcbdetach(inp); 1191 udbinfo_barrier_rem(); 1192 error = 0; 1193 } else { 1194 error = EINVAL; 1195 } 1196 lwkt_replymsg(&msg->detach.base.lmsg, error); 1197 } 1198 1199 static void 1200 udp_disconnect(netmsg_t msg) 1201 { 1202 struct socket *so = msg->disconnect.base.nm_so; 1203 struct route *ro; 1204 struct inpcb *inp; 1205 int error; 1206 1207 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 1208 1209 inp = so->so_pcb; 1210 if (inp == NULL) { 1211 error = EINVAL; 1212 goto out; 1213 } 1214 if (inp->inp_faddr.s_addr == INADDR_ANY) { 1215 error = ENOTCONN; 1216 goto out; 1217 } 1218 1219 soreference(so); 1220 1221 udbinfo_barrier_set(); 1222 in_pcbdisconnect(inp); 1223 udbinfo_barrier_rem(); 1224 1225 soclrstate(so, SS_ISCONNECTED); /* XXX */ 1226 sofree(so); 1227 1228 ro = &inp->inp_route; 1229 if (ro->ro_rt != NULL) 1230 RTFREE(ro->ro_rt); 1231 bzero(ro, sizeof(*ro)); 1232 error = 0; 1233 out: 1234 lwkt_replymsg(&msg->disconnect.base.lmsg, error); 1235 } 1236 1237 static void 1238 udp_send(netmsg_t msg) 1239 { 1240 struct socket *so = msg->send.base.nm_so; 1241 struct inpcb *inp; 1242 int error; 1243 1244 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 1245 1246 inp = so->so_pcb; 1247 if (inp) { 1248 error = udp_output(inp, 1249 msg->send.nm_m, 1250 msg->send.nm_addr, 1251 msg->send.nm_control, 1252 msg->send.nm_td); 1253 } else { 1254 m_freem(msg->send.nm_m); 1255 error = EINVAL; 1256 } 1257 msg->send.nm_m = NULL; 1258 lwkt_replymsg(&msg->send.base.lmsg, error); 1259 } 1260 1261 void 1262 udp_shutdown(netmsg_t msg) 1263 { 1264 struct socket *so = msg->shutdown.base.nm_so; 1265 struct inpcb *inp; 1266 int error; 1267 1268 KKASSERT(&curthread->td_msgport == cpu_portfn(0)); 1269 1270 inp = so->so_pcb; 1271 if (inp) { 1272 socantsendmore(so); 1273 error = 0; 1274 } else { 1275 error = EINVAL; 1276 } 1277 lwkt_replymsg(&msg->shutdown.base.lmsg, error); 1278 } 1279 1280 void 1281 udbinfo_lock(void) 1282 { 1283 lwkt_serialize_enter(&udbinfo_slize); 1284 } 1285 1286 void 1287 udbinfo_unlock(void) 1288 { 1289 lwkt_serialize_exit(&udbinfo_slize); 1290 } 1291 1292 void 1293 udbinfo_barrier_set(void) 1294 { 1295 netisr_barrier_set(udbinfo_br); 1296 udbinfo_lock(); 1297 } 1298 1299 void 1300 udbinfo_barrier_rem(void) 1301 { 1302 udbinfo_unlock(); 1303 netisr_barrier_rem(udbinfo_br); 1304 } 1305 1306 struct pr_usrreqs udp_usrreqs = { 1307 .pru_abort = udp_abort, 1308 .pru_accept = pr_generic_notsupp, 1309 .pru_attach = udp_attach, 1310 .pru_bind = udp_bind, 1311 .pru_connect = udp_connect, 1312 .pru_connect2 = pr_generic_notsupp, 1313 .pru_control = in_control_dispatch, 1314 .pru_detach = udp_detach, 1315 .pru_disconnect = udp_disconnect, 1316 .pru_listen = pr_generic_notsupp, 1317 .pru_peeraddr = in_setpeeraddr_dispatch, 1318 .pru_rcvd = pr_generic_notsupp, 1319 .pru_rcvoob = pr_generic_notsupp, 1320 .pru_send = udp_send, 1321 .pru_sense = pru_sense_null, 1322 .pru_shutdown = udp_shutdown, 1323 .pru_sockaddr = in_setsockaddr_dispatch, 1324 .pru_sosend = sosendudp, 1325 .pru_soreceive = soreceive 1326 }; 1327 1328