1 /* 2 * Copyright (c) 1982, 1986, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #include "opt_inet.h" 33 #include "opt_ipfw.h" 34 #include "opt_ipdivert.h" 35 #include "opt_ipsec.h" 36 #include "opt_mac.h" 37 38 #ifndef INET 39 #error "IPDIVERT requires INET." 40 #endif 41 42 #include <sys/param.h> 43 #include <sys/kernel.h> 44 #include <sys/lock.h> 45 #include <sys/malloc.h> 46 #include <sys/mac.h> 47 #include <sys/mbuf.h> 48 #include <sys/proc.h> 49 #include <sys/protosw.h> 50 #include <sys/signalvar.h> 51 #include <sys/socket.h> 52 #include <sys/socketvar.h> 53 #include <sys/sx.h> 54 #include <sys/sysctl.h> 55 #include <sys/systm.h> 56 57 #include <vm/uma.h> 58 59 #include <net/if.h> 60 #include <net/route.h> 61 62 #include <netinet/in.h> 63 #include <netinet/in_pcb.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 #include <netinet/ip_divert.h> 68 #include <netinet/ip_var.h> 69 70 /* 71 * Divert sockets 72 */ 73 74 /* 75 * Allocate enough space to hold a full IP packet 76 */ 77 #define DIVSNDQ (65536 + 100) 78 #define DIVRCVQ (65536 + 100) 79 80 /* 81 * Divert sockets work in conjunction with ipfw, see the divert(4) 82 * manpage for features. 83 * Internally, packets selected by ipfw in ip_input() or ip_output(), 84 * and never diverted before, are passed to the input queue of the 85 * divert socket with a given 'divert_port' number (as specified in 86 * the matching ipfw rule), and they are tagged with a 16 bit cookie 87 * (representing the rule number of the matching ipfw rule), which 88 * is passed to process reading from the socket. 89 * 90 * Packets written to the divert socket are again tagged with a cookie 91 * (usually the same as above) and a destination address. 92 * If the destination address is INADDR_ANY then the packet is 93 * treated as outgoing and sent to ip_output(), otherwise it is 94 * treated as incoming and sent to ip_input(). 95 * In both cases, the packet is tagged with the cookie. 96 * 97 * On reinjection, processing in ip_input() and ip_output() 98 * will be exactly the same as for the original packet, except that 99 * ipfw processing will start at the rule number after the one 100 * written in the cookie (so, tagging a packet with a cookie of 0 101 * will cause it to be effectively considered as a standard packet). 102 */ 103 104 /* Internal variables */ 105 static struct inpcbhead divcb; 106 static struct inpcbinfo divcbinfo; 107 108 static u_long div_sendspace = DIVSNDQ; /* XXX sysctl ? */ 109 static u_long div_recvspace = DIVRCVQ; /* XXX sysctl ? */ 110 111 /* 112 * Initialize divert connection block queue. 113 */ 114 void 115 div_init(void) 116 { 117 INP_INFO_LOCK_INIT(&divcbinfo, "div"); 118 LIST_INIT(&divcb); 119 divcbinfo.listhead = &divcb; 120 /* 121 * XXX We don't use the hash list for divert IP, but it's easier 122 * to allocate a one entry hash list than it is to check all 123 * over the place for hashbase == NULL. 124 */ 125 divcbinfo.hashbase = hashinit(1, M_PCB, &divcbinfo.hashmask); 126 divcbinfo.porthashbase = hashinit(1, M_PCB, &divcbinfo.porthashmask); 127 divcbinfo.ipi_zone = uma_zcreate("divcb", sizeof(struct inpcb), 128 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 129 uma_zone_set_max(divcbinfo.ipi_zone, maxsockets); 130 } 131 132 /* 133 * IPPROTO_DIVERT is not in the real IP protocol number space; this 134 * function should never be called. Just in case, drop any packets. 135 */ 136 void 137 div_input(struct mbuf *m, int off) 138 { 139 ipstat.ips_noproto++; 140 m_freem(m); 141 } 142 143 /* 144 * Divert a packet by passing it up to the divert socket at port 'port'. 145 * 146 * Setup generic address and protocol structures for div_input routine, 147 * then pass them along with mbuf chain. 148 */ 149 void 150 divert_packet(struct mbuf *m, int incoming) 151 { 152 struct ip *ip; 153 struct inpcb *inp; 154 struct socket *sa; 155 u_int16_t nport; 156 struct sockaddr_in divsrc; 157 struct m_tag *mtag; 158 159 mtag = m_tag_find(m, PACKET_TAG_DIVERT, NULL); 160 if (mtag == NULL) { 161 printf("%s: no divert tag\n", __func__); 162 m_freem(m); 163 return; 164 } 165 /* Assure header */ 166 if (m->m_len < sizeof(struct ip) && 167 (m = m_pullup(m, sizeof(struct ip))) == 0) 168 return; 169 ip = mtod(m, struct ip *); 170 171 /* 172 * Record receive interface address, if any. 173 * But only for incoming packets. 174 */ 175 bzero(&divsrc, sizeof(divsrc)); 176 divsrc.sin_len = sizeof(divsrc); 177 divsrc.sin_family = AF_INET; 178 divsrc.sin_port = divert_cookie(mtag); /* record matching rule */ 179 if (incoming) { 180 struct ifaddr *ifa; 181 182 /* Sanity check */ 183 M_ASSERTPKTHDR(m); 184 185 /* Find IP address for receive interface */ 186 TAILQ_FOREACH(ifa, &m->m_pkthdr.rcvif->if_addrhead, ifa_link) { 187 if (ifa->ifa_addr == NULL) 188 continue; 189 if (ifa->ifa_addr->sa_family != AF_INET) 190 continue; 191 divsrc.sin_addr = 192 ((struct sockaddr_in *) ifa->ifa_addr)->sin_addr; 193 break; 194 } 195 } 196 /* 197 * Record the incoming interface name whenever we have one. 198 */ 199 if (m->m_pkthdr.rcvif) { 200 /* 201 * Hide the actual interface name in there in the 202 * sin_zero array. XXX This needs to be moved to a 203 * different sockaddr type for divert, e.g. 204 * sockaddr_div with multiple fields like 205 * sockaddr_dl. Presently we have only 7 bytes 206 * but that will do for now as most interfaces 207 * are 4 or less + 2 or less bytes for unit. 208 * There is probably a faster way of doing this, 209 * possibly taking it from the sockaddr_dl on the iface. 210 * This solves the problem of a P2P link and a LAN interface 211 * having the same address, which can result in the wrong 212 * interface being assigned to the packet when fed back 213 * into the divert socket. Theoretically if the daemon saves 214 * and re-uses the sockaddr_in as suggested in the man pages, 215 * this iface name will come along for the ride. 216 * (see div_output for the other half of this.) 217 */ 218 strlcpy(divsrc.sin_zero, m->m_pkthdr.rcvif->if_xname, 219 sizeof(divsrc.sin_zero)); 220 } 221 222 /* 223 * XXX sbappendaddr must be protected by Giant until 224 * we have locking at the socket layer. When entered 225 * from below we come in w/o Giant and must take it 226 * here. Unfortunately we cannot tell whether we're 227 * entering from above (already holding Giant), 228 * below (potentially without Giant), or otherwise 229 * (e.g. from tcp_syncache through a timeout) so we 230 * have to grab it regardless. This causes a LOR with 231 * the tcp lock, at least, and possibly others. For 232 * the moment we're ignoring this. Once sockets are 233 * locked this cruft can be removed. 234 */ 235 mtx_lock(&Giant); 236 /* Put packet on socket queue, if any */ 237 sa = NULL; 238 nport = htons((u_int16_t)divert_info(mtag)); 239 INP_INFO_RLOCK(&divcbinfo); 240 LIST_FOREACH(inp, &divcb, inp_list) { 241 INP_LOCK(inp); 242 /* XXX why does only one socket match? */ 243 if (inp->inp_lport == nport) { 244 sa = inp->inp_socket; 245 if (sbappendaddr(&sa->so_rcv, 246 (struct sockaddr *)&divsrc, m, 247 (struct mbuf *)0) == 0) 248 sa = NULL; /* force mbuf reclaim below */ 249 else 250 sorwakeup(sa); 251 INP_UNLOCK(inp); 252 break; 253 } 254 INP_UNLOCK(inp); 255 } 256 INP_INFO_RUNLOCK(&divcbinfo); 257 mtx_unlock(&Giant); 258 if (sa == NULL) { 259 m_freem(m); 260 ipstat.ips_noproto++; 261 ipstat.ips_delivered--; 262 } 263 } 264 265 /* 266 * Deliver packet back into the IP processing machinery. 267 * 268 * If no address specified, or address is 0.0.0.0, send to ip_output(); 269 * otherwise, send to ip_input() and mark as having been received on 270 * the interface with that address. 271 */ 272 static int 273 div_output(struct socket *so, struct mbuf *m, 274 struct sockaddr_in *sin, struct mbuf *control) 275 { 276 int error = 0; 277 278 KASSERT(m->m_pkthdr.rcvif == NULL, ("rcvif not null")); 279 280 #ifdef MAC 281 mac_create_mbuf_from_socket(so, m); 282 #endif 283 284 if (control) 285 m_freem(control); /* XXX */ 286 287 /* Loopback avoidance and state recovery */ 288 if (sin) { 289 struct m_tag *mtag; 290 struct divert_tag *dt; 291 int i; 292 293 mtag = m_tag_get(PACKET_TAG_DIVERT, 294 sizeof(struct divert_tag), M_NOWAIT); 295 if (mtag == NULL) { 296 error = ENOBUFS; 297 goto cantsend; 298 } 299 dt = (struct divert_tag *)(mtag+1); 300 dt->info = 0; 301 dt->cookie = sin->sin_port; 302 m_tag_prepend(m, mtag); 303 304 /* 305 * Find receive interface with the given name, stuffed 306 * (if it exists) in the sin_zero[] field. 307 * The name is user supplied data so don't trust its size 308 * or that it is zero terminated. 309 */ 310 for (i = 0; i < sizeof(sin->sin_zero) && sin->sin_zero[i]; i++) 311 ; 312 if ( i > 0 && i < sizeof(sin->sin_zero)) 313 m->m_pkthdr.rcvif = ifunit(sin->sin_zero); 314 } 315 316 /* Reinject packet into the system as incoming or outgoing */ 317 if (!sin || sin->sin_addr.s_addr == 0) { 318 struct ip *const ip = mtod(m, struct ip *); 319 struct inpcb *inp; 320 321 INP_INFO_WLOCK(&divcbinfo); 322 inp = sotoinpcb(so); 323 INP_LOCK(inp); 324 /* 325 * Don't allow both user specified and setsockopt options, 326 * and don't allow packet length sizes that will crash 327 */ 328 if (((ip->ip_hl != (sizeof (*ip) >> 2)) && inp->inp_options) || 329 ((u_short)ntohs(ip->ip_len) > m->m_pkthdr.len)) { 330 error = EINVAL; 331 m_freem(m); 332 } else { 333 /* Convert fields to host order for ip_output() */ 334 ip->ip_len = ntohs(ip->ip_len); 335 ip->ip_off = ntohs(ip->ip_off); 336 337 /* Send packet to output processing */ 338 ipstat.ips_rawout++; /* XXX */ 339 340 error = ip_output(m, 341 inp->inp_options, NULL, 342 (so->so_options & SO_DONTROUTE) | 343 IP_ALLOWBROADCAST | IP_RAWOUTPUT, 344 inp->inp_moptions, NULL); 345 } 346 INP_UNLOCK(inp); 347 INP_INFO_WUNLOCK(&divcbinfo); 348 } else { 349 if (m->m_pkthdr.rcvif == NULL) { 350 /* 351 * No luck with the name, check by IP address. 352 * Clear the port and the ifname to make sure 353 * there are no distractions for ifa_ifwithaddr. 354 */ 355 struct ifaddr *ifa; 356 357 bzero(sin->sin_zero, sizeof(sin->sin_zero)); 358 sin->sin_port = 0; 359 ifa = ifa_ifwithaddr((struct sockaddr *) sin); 360 if (ifa == NULL) { 361 error = EADDRNOTAVAIL; 362 goto cantsend; 363 } 364 m->m_pkthdr.rcvif = ifa->ifa_ifp; 365 } 366 /* Send packet to input processing */ 367 ip_input(m); 368 } 369 370 return error; 371 372 cantsend: 373 m_freem(m); 374 return error; 375 } 376 377 /* 378 * Return a copy of the specified packet, but without 379 * the divert tag. This is used when packets are ``tee'd'' 380 * and we want the cloned copy to not have divert processing. 381 */ 382 struct mbuf * 383 divert_clone(struct mbuf *m) 384 { 385 struct mbuf *clone; 386 struct m_tag *mtag; 387 388 clone = m_dup(m, M_DONTWAIT); 389 if (clone != NULL) { 390 /* strip divert tag from copy */ 391 mtag = m_tag_find(clone, PACKET_TAG_DIVERT, NULL); 392 if (mtag != NULL) 393 m_tag_delete(clone, mtag); 394 } 395 return clone; 396 } 397 398 static int 399 div_attach(struct socket *so, int proto, struct thread *td) 400 { 401 struct inpcb *inp; 402 int error; 403 404 INP_INFO_WLOCK(&divcbinfo); 405 inp = sotoinpcb(so); 406 if (inp != 0) { 407 INP_INFO_WUNLOCK(&divcbinfo); 408 return EINVAL; 409 } 410 if (td && (error = suser(td)) != 0) { 411 INP_INFO_WUNLOCK(&divcbinfo); 412 return error; 413 } 414 error = soreserve(so, div_sendspace, div_recvspace); 415 if (error) { 416 INP_INFO_WUNLOCK(&divcbinfo); 417 return error; 418 } 419 error = in_pcballoc(so, &divcbinfo, "divinp"); 420 if (error) { 421 INP_INFO_WUNLOCK(&divcbinfo); 422 return error; 423 } 424 inp = (struct inpcb *)so->so_pcb; 425 INP_LOCK(inp); 426 INP_INFO_WUNLOCK(&divcbinfo); 427 inp->inp_ip_p = proto; 428 inp->inp_vflag |= INP_IPV4; 429 inp->inp_flags |= INP_HDRINCL; 430 /* The socket is always "connected" because 431 we always know "where" to send the packet */ 432 INP_UNLOCK(inp); 433 so->so_state |= SS_ISCONNECTED; 434 return 0; 435 } 436 437 static int 438 div_detach(struct socket *so) 439 { 440 struct inpcb *inp; 441 442 INP_INFO_WLOCK(&divcbinfo); 443 inp = sotoinpcb(so); 444 if (inp == 0) { 445 INP_INFO_WUNLOCK(&divcbinfo); 446 return EINVAL; 447 } 448 INP_LOCK(inp); 449 in_pcbdetach(inp); 450 INP_INFO_WUNLOCK(&divcbinfo); 451 return 0; 452 } 453 454 static int 455 div_abort(struct socket *so) 456 { 457 struct inpcb *inp; 458 459 INP_INFO_WLOCK(&divcbinfo); 460 inp = sotoinpcb(so); 461 if (inp == 0) { 462 INP_INFO_WUNLOCK(&divcbinfo); 463 return EINVAL; /* ??? possible? panic instead? */ 464 } 465 INP_LOCK(inp); 466 soisdisconnected(so); 467 in_pcbdetach(inp); 468 INP_INFO_WUNLOCK(&divcbinfo); 469 return 0; 470 } 471 472 static int 473 div_disconnect(struct socket *so) 474 { 475 if ((so->so_state & SS_ISCONNECTED) == 0) 476 return ENOTCONN; 477 return div_abort(so); 478 } 479 480 static int 481 div_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 482 { 483 struct inpcb *inp; 484 int error; 485 486 INP_INFO_WLOCK(&divcbinfo); 487 inp = sotoinpcb(so); 488 if (inp == 0) { 489 INP_INFO_WUNLOCK(&divcbinfo); 490 return EINVAL; 491 } 492 /* in_pcbbind assumes that nam is a sockaddr_in 493 * and in_pcbbind requires a valid address. Since divert 494 * sockets don't we need to make sure the address is 495 * filled in properly. 496 * XXX -- divert should not be abusing in_pcbind 497 * and should probably have its own family. 498 */ 499 if (nam->sa_family != AF_INET) 500 error = EAFNOSUPPORT; 501 else { 502 ((struct sockaddr_in *)nam)->sin_addr.s_addr = INADDR_ANY; 503 INP_LOCK(inp); 504 error = in_pcbbind(inp, nam, td->td_ucred); 505 INP_UNLOCK(inp); 506 } 507 INP_INFO_WUNLOCK(&divcbinfo); 508 return error; 509 } 510 511 static int 512 div_shutdown(struct socket *so) 513 { 514 struct inpcb *inp; 515 516 INP_INFO_RLOCK(&divcbinfo); 517 inp = sotoinpcb(so); 518 if (inp == 0) { 519 INP_INFO_RUNLOCK(&divcbinfo); 520 return EINVAL; 521 } 522 INP_LOCK(inp); 523 INP_INFO_RUNLOCK(&divcbinfo); 524 socantsendmore(so); 525 INP_UNLOCK(inp); 526 return 0; 527 } 528 529 static int 530 div_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 531 struct mbuf *control, struct thread *td) 532 { 533 /* Packet must have a header (but that's about it) */ 534 if (m->m_len < sizeof (struct ip) && 535 (m = m_pullup(m, sizeof (struct ip))) == 0) { 536 ipstat.ips_toosmall++; 537 m_freem(m); 538 return EINVAL; 539 } 540 541 /* Send packet */ 542 return div_output(so, m, (struct sockaddr_in *)nam, control); 543 } 544 545 void 546 div_ctlinput(int cmd, struct sockaddr *sa, void *vip) 547 { 548 struct in_addr faddr; 549 550 faddr = ((struct sockaddr_in *)sa)->sin_addr; 551 if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY) 552 return; 553 if (PRC_IS_REDIRECT(cmd)) 554 return; 555 } 556 557 static int 558 div_pcblist(SYSCTL_HANDLER_ARGS) 559 { 560 int error, i, n; 561 struct inpcb *inp, **inp_list; 562 inp_gen_t gencnt; 563 struct xinpgen xig; 564 565 /* 566 * The process of preparing the TCB list is too time-consuming and 567 * resource-intensive to repeat twice on every request. 568 */ 569 if (req->oldptr == 0) { 570 n = divcbinfo.ipi_count; 571 req->oldidx = 2 * (sizeof xig) 572 + (n + n/8) * sizeof(struct xinpcb); 573 return 0; 574 } 575 576 if (req->newptr != 0) 577 return EPERM; 578 579 /* 580 * OK, now we're committed to doing something. 581 */ 582 INP_INFO_RLOCK(&divcbinfo); 583 gencnt = divcbinfo.ipi_gencnt; 584 n = divcbinfo.ipi_count; 585 INP_INFO_RUNLOCK(&divcbinfo); 586 587 error = sysctl_wire_old_buffer(req, 588 2 * sizeof(xig) + n*sizeof(struct xinpcb)); 589 if (error != 0) 590 return (error); 591 592 xig.xig_len = sizeof xig; 593 xig.xig_count = n; 594 xig.xig_gen = gencnt; 595 xig.xig_sogen = so_gencnt; 596 error = SYSCTL_OUT(req, &xig, sizeof xig); 597 if (error) 598 return error; 599 600 inp_list = malloc(n * sizeof *inp_list, M_TEMP, M_WAITOK); 601 if (inp_list == 0) 602 return ENOMEM; 603 604 INP_INFO_RLOCK(&divcbinfo); 605 for (inp = LIST_FIRST(divcbinfo.listhead), i = 0; inp && i < n; 606 inp = LIST_NEXT(inp, inp_list)) { 607 INP_LOCK(inp); 608 if (inp->inp_gencnt <= gencnt && 609 cr_canseesocket(req->td->td_ucred, inp->inp_socket) == 0) 610 inp_list[i++] = inp; 611 INP_UNLOCK(inp); 612 } 613 INP_INFO_RUNLOCK(&divcbinfo); 614 n = i; 615 616 error = 0; 617 for (i = 0; i < n; i++) { 618 inp = inp_list[i]; 619 if (inp->inp_gencnt <= gencnt) { 620 struct xinpcb xi; 621 xi.xi_len = sizeof xi; 622 /* XXX should avoid extra copy */ 623 bcopy(inp, &xi.xi_inp, sizeof *inp); 624 if (inp->inp_socket) 625 sotoxsocket(inp->inp_socket, &xi.xi_socket); 626 error = SYSCTL_OUT(req, &xi, sizeof xi); 627 } 628 } 629 if (!error) { 630 /* 631 * Give the user an updated idea of our state. 632 * If the generation differs from what we told 633 * her before, she knows that something happened 634 * while we were processing this request, and it 635 * might be necessary to retry. 636 */ 637 INP_INFO_RLOCK(&divcbinfo); 638 xig.xig_gen = divcbinfo.ipi_gencnt; 639 xig.xig_sogen = so_gencnt; 640 xig.xig_count = divcbinfo.ipi_count; 641 INP_INFO_RUNLOCK(&divcbinfo); 642 error = SYSCTL_OUT(req, &xig, sizeof xig); 643 } 644 free(inp_list, M_TEMP); 645 return error; 646 } 647 648 /* 649 * This is the wrapper function for in_setsockaddr. We just pass down 650 * the pcbinfo for in_setpeeraddr to lock. 651 */ 652 static int 653 div_sockaddr(struct socket *so, struct sockaddr **nam) 654 { 655 return (in_setsockaddr(so, nam, &divcbinfo)); 656 } 657 658 /* 659 * This is the wrapper function for in_setpeeraddr. We just pass down 660 * the pcbinfo for in_setpeeraddr to lock. 661 */ 662 static int 663 div_peeraddr(struct socket *so, struct sockaddr **nam) 664 { 665 return (in_setpeeraddr(so, nam, &divcbinfo)); 666 } 667 668 669 SYSCTL_DECL(_net_inet_divert); 670 SYSCTL_PROC(_net_inet_divert, OID_AUTO, pcblist, CTLFLAG_RD, 0, 0, 671 div_pcblist, "S,xinpcb", "List of active divert sockets"); 672 673 struct pr_usrreqs div_usrreqs = { 674 div_abort, pru_accept_notsupp, div_attach, div_bind, 675 pru_connect_notsupp, pru_connect2_notsupp, in_control, div_detach, 676 div_disconnect, pru_listen_notsupp, div_peeraddr, pru_rcvd_notsupp, 677 pru_rcvoob_notsupp, div_send, pru_sense_null, div_shutdown, 678 div_sockaddr, sosend, soreceive, sopoll, in_pcbsosetlabel 679 }; 680