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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)raw_ip.c 8.7 (Berkeley) 5/15/95 34 * $FreeBSD: src/sys/netinet/raw_ip.c,v 1.64.2.16 2003/08/24 08:24:38 hsu Exp $ 35 * $DragonFly: src/sys/netinet/raw_ip.c,v 1.33 2008/10/28 03:07:28 sephe Exp $ 36 */ 37 38 #include "opt_inet6.h" 39 #include "opt_ipsec.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/jail.h> 45 #include <sys/malloc.h> 46 #include <sys/mbuf.h> 47 #include <sys/proc.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 #include <sys/socketvar.h> 51 #include <sys/sysctl.h> 52 #include <sys/thread2.h> 53 54 #include <machine/stdarg.h> 55 56 #include <vm/vm_zone.h> 57 58 #include <net/if.h> 59 #include <net/route.h> 60 61 #define _IP_VHL 62 #include <netinet/in.h> 63 #include <netinet/in_systm.h> 64 #include <netinet/ip.h> 65 #include <netinet/in_pcb.h> 66 #include <netinet/in_var.h> 67 #include <netinet/ip_var.h> 68 69 #include <net/ip_mroute/ip_mroute.h> 70 #include <net/ipfw/ip_fw.h> 71 #include <net/dummynet/ip_dummynet.h> 72 73 #ifdef FAST_IPSEC 74 #include <netproto/ipsec/ipsec.h> 75 #endif /*FAST_IPSEC*/ 76 77 #ifdef IPSEC 78 #include <netinet6/ipsec.h> 79 #endif /*IPSEC*/ 80 81 struct inpcbinfo ripcbinfo; 82 83 /* control hooks for ipfw and dummynet */ 84 ip_fw_ctl_t *ip_fw_ctl_ptr; 85 ip_dn_ctl_t *ip_dn_ctl_ptr; 86 87 /* 88 * hooks for multicast routing. They all default to NULL, 89 * so leave them not initialized and rely on BSS being set to 0. 90 */ 91 92 /* The socket used to communicate with the multicast routing daemon. */ 93 struct socket *ip_mrouter; 94 95 /* The various mrouter and rsvp functions */ 96 int (*ip_mrouter_set)(struct socket *, struct sockopt *); 97 int (*ip_mrouter_get)(struct socket *, struct sockopt *); 98 int (*ip_mrouter_done)(void); 99 int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *, 100 struct ip_moptions *); 101 int (*mrt_ioctl)(int, caddr_t); 102 int (*legal_vif_num)(int); 103 u_long (*ip_mcast_src)(int); 104 105 void (*rsvp_input_p)(struct mbuf *m, ...); 106 int (*ip_rsvp_vif)(struct socket *, struct sockopt *); 107 void (*ip_rsvp_force_done)(struct socket *); 108 109 /* 110 * Nominal space allocated to a raw ip socket. 111 */ 112 #define RIPSNDQ 8192 113 #define RIPRCVQ 8192 114 115 /* 116 * Raw interface to IP protocol. 117 */ 118 119 /* 120 * Initialize raw connection block queue. 121 */ 122 void 123 rip_init(void) 124 { 125 in_pcbinfo_init(&ripcbinfo); 126 /* 127 * XXX We don't use the hash list for raw IP, but it's easier 128 * to allocate a one entry hash list than it is to check all 129 * over the place for hashbase == NULL. 130 */ 131 ripcbinfo.hashbase = hashinit(1, M_PCB, &ripcbinfo.hashmask); 132 ripcbinfo.porthashbase = hashinit(1, M_PCB, &ripcbinfo.porthashmask); 133 ripcbinfo.wildcardhashbase = hashinit(1, M_PCB, 134 &ripcbinfo.wildcardhashmask); 135 ripcbinfo.ipi_zone = zinit("ripcb", sizeof(struct inpcb), 136 maxsockets, ZONE_INTERRUPT, 0); 137 } 138 139 /* 140 * Setup generic address and protocol structures 141 * for raw_input routine, then pass them along with 142 * mbuf chain. 143 */ 144 void 145 rip_input(struct mbuf *m, ...) 146 { 147 struct sockaddr_in ripsrc = { sizeof ripsrc, AF_INET }; 148 struct ip *ip = mtod(m, struct ip *); 149 struct inpcb *inp; 150 struct inpcb *last = NULL; 151 struct mbuf *opts = NULL; 152 int off, proto; 153 __va_list ap; 154 155 __va_start(ap, m); 156 off = __va_arg(ap, int); 157 proto = __va_arg(ap, int); 158 __va_end(ap); 159 160 ripsrc.sin_addr = ip->ip_src; 161 LIST_FOREACH(inp, &ripcbinfo.pcblisthead, inp_list) { 162 if (inp->inp_flags & INP_PLACEMARKER) 163 continue; 164 #ifdef INET6 165 if ((inp->inp_vflag & INP_IPV4) == 0) 166 continue; 167 #endif 168 if (inp->inp_ip_p && inp->inp_ip_p != proto) 169 continue; 170 if (inp->inp_laddr.s_addr != INADDR_ANY && 171 inp->inp_laddr.s_addr != ip->ip_dst.s_addr) 172 continue; 173 if (inp->inp_faddr.s_addr != INADDR_ANY && 174 inp->inp_faddr.s_addr != ip->ip_src.s_addr) 175 continue; 176 if (last) { 177 struct mbuf *n = m_copypacket(m, MB_DONTWAIT); 178 179 #ifdef IPSEC 180 /* check AH/ESP integrity. */ 181 if (n && ipsec4_in_reject_so(n, last->inp_socket)) { 182 m_freem(n); 183 ipsecstat.in_polvio++; 184 /* do not inject data to pcb */ 185 } else 186 #endif /*IPSEC*/ 187 #ifdef FAST_IPSEC 188 /* check AH/ESP integrity. */ 189 if (ipsec4_in_reject(n, last)) { 190 m_freem(n); 191 /* do not inject data to pcb */ 192 } else 193 #endif /*FAST_IPSEC*/ 194 if (n) { 195 if (last->inp_flags & INP_CONTROLOPTS || 196 last->inp_socket->so_options & SO_TIMESTAMP) 197 ip_savecontrol(last, &opts, ip, n); 198 if (ssb_appendaddr(&last->inp_socket->so_rcv, 199 (struct sockaddr *)&ripsrc, n, 200 opts) == 0) { 201 /* should notify about lost packet */ 202 m_freem(n); 203 if (opts) 204 m_freem(opts); 205 } else 206 sorwakeup(last->inp_socket); 207 opts = 0; 208 } 209 } 210 last = inp; 211 } 212 #ifdef IPSEC 213 /* check AH/ESP integrity. */ 214 if (last && ipsec4_in_reject_so(m, last->inp_socket)) { 215 m_freem(m); 216 ipsecstat.in_polvio++; 217 ipstat.ips_delivered--; 218 /* do not inject data to pcb */ 219 } else 220 #endif /*IPSEC*/ 221 #ifdef FAST_IPSEC 222 /* check AH/ESP integrity. */ 223 if (last && ipsec4_in_reject(m, last)) { 224 m_freem(m); 225 ipstat.ips_delivered--; 226 /* do not inject data to pcb */ 227 } else 228 #endif /*FAST_IPSEC*/ 229 /* Check the minimum TTL for socket. */ 230 if (last && ip->ip_ttl < last->inp_ip_minttl) { 231 m_freem(opts); 232 ipstat.ips_delivered--; 233 } else if (last) { 234 if (last->inp_flags & INP_CONTROLOPTS || 235 last->inp_socket->so_options & SO_TIMESTAMP) 236 ip_savecontrol(last, &opts, ip, m); 237 if (ssb_appendaddr(&last->inp_socket->so_rcv, 238 (struct sockaddr *)&ripsrc, m, opts) == 0) { 239 m_freem(m); 240 if (opts) 241 m_freem(opts); 242 } else 243 sorwakeup(last->inp_socket); 244 } else { 245 m_freem(m); 246 ipstat.ips_noproto++; 247 ipstat.ips_delivered--; 248 } 249 } 250 251 /* 252 * Generate IP header and pass packet to ip_output. 253 * Tack on options user may have setup with control call. 254 */ 255 int 256 rip_output(struct mbuf *m, struct socket *so, ...) 257 { 258 struct ip *ip; 259 struct inpcb *inp = so->so_pcb; 260 __va_list ap; 261 int flags = (so->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST; 262 u_long dst; 263 264 __va_start(ap, so); 265 dst = __va_arg(ap, u_long); 266 __va_end(ap); 267 268 /* 269 * If the user handed us a complete IP packet, use it. 270 * Otherwise, allocate an mbuf for a header and fill it in. 271 */ 272 if ((inp->inp_flags & INP_HDRINCL) == 0) { 273 if (m->m_pkthdr.len + sizeof(struct ip) > IP_MAXPACKET) { 274 m_freem(m); 275 return(EMSGSIZE); 276 } 277 M_PREPEND(m, sizeof(struct ip), MB_WAIT); 278 if (m == NULL) 279 return(ENOBUFS); 280 ip = mtod(m, struct ip *); 281 ip->ip_tos = inp->inp_ip_tos; 282 ip->ip_off = 0; 283 ip->ip_p = inp->inp_ip_p; 284 ip->ip_len = m->m_pkthdr.len; 285 ip->ip_src = inp->inp_laddr; 286 ip->ip_dst.s_addr = dst; 287 ip->ip_ttl = inp->inp_ip_ttl; 288 } else { 289 int hlen; 290 291 if (m->m_pkthdr.len > IP_MAXPACKET) { 292 m_freem(m); 293 return(EMSGSIZE); 294 } 295 if (m->m_len < sizeof(struct ip)) { 296 m = m_pullup(m, sizeof(struct ip)); 297 if (m == NULL) 298 return ENOBUFS; 299 } 300 ip = mtod(m, struct ip *); 301 hlen = IP_VHL_HL(ip->ip_vhl) << 2; 302 303 /* Don't allow header length less than the minimum. */ 304 if (hlen < sizeof(struct ip)) { 305 m_freem(m); 306 return EINVAL; 307 } 308 309 /* 310 * Don't allow both user specified and setsockopt options. 311 * Don't allow packet length sizes that will crash. 312 */ 313 if ((hlen != sizeof(struct ip) && inp->inp_options) || 314 ip->ip_len > m->m_pkthdr.len || ip->ip_len < hlen) { 315 m_freem(m); 316 return EINVAL; 317 } 318 if (ip->ip_id == 0) 319 ip->ip_id = ip_newid(); 320 321 /* Prevent ip_output from overwriting header fields */ 322 flags |= IP_RAWOUTPUT; 323 ipstat.ips_rawout++; 324 } 325 326 return ip_output(m, inp->inp_options, &inp->inp_route, flags, 327 inp->inp_moptions, inp); 328 } 329 330 /* 331 * Raw IP socket option processing. 332 */ 333 int 334 rip_ctloutput(struct socket *so, struct sockopt *sopt) 335 { 336 struct inpcb *inp = so->so_pcb; 337 int error, optval; 338 339 if (sopt->sopt_level != IPPROTO_IP) 340 return (EINVAL); 341 342 error = 0; 343 344 switch (sopt->sopt_dir) { 345 case SOPT_GET: 346 switch (sopt->sopt_name) { 347 case IP_HDRINCL: 348 optval = inp->inp_flags & INP_HDRINCL; 349 soopt_from_kbuf(sopt, &optval, sizeof optval); 350 break; 351 352 case IP_FW_ADD: /* ADD actually returns the body... */ 353 case IP_FW_GET: 354 if (IPFW_LOADED) 355 error = ip_fw_sockopt(sopt); 356 else 357 error = ENOPROTOOPT; 358 break; 359 360 case IP_DUMMYNET_GET: 361 error = ip_dn_sockopt(sopt); 362 break ; 363 364 case MRT_INIT: 365 case MRT_DONE: 366 case MRT_ADD_VIF: 367 case MRT_DEL_VIF: 368 case MRT_ADD_MFC: 369 case MRT_DEL_MFC: 370 case MRT_VERSION: 371 case MRT_ASSERT: 372 case MRT_API_SUPPORT: 373 case MRT_API_CONFIG: 374 case MRT_ADD_BW_UPCALL: 375 case MRT_DEL_BW_UPCALL: 376 error = ip_mrouter_get ? ip_mrouter_get(so, sopt) : 377 EOPNOTSUPP; 378 break; 379 380 default: 381 error = ip_ctloutput(so, sopt); 382 break; 383 } 384 break; 385 386 case SOPT_SET: 387 switch (sopt->sopt_name) { 388 case IP_HDRINCL: 389 error = soopt_to_kbuf(sopt, &optval, sizeof optval, 390 sizeof optval); 391 if (error) 392 break; 393 if (optval) 394 inp->inp_flags |= INP_HDRINCL; 395 else 396 inp->inp_flags &= ~INP_HDRINCL; 397 break; 398 399 case IP_FW_ADD: 400 case IP_FW_DEL: 401 case IP_FW_FLUSH: 402 case IP_FW_ZERO: 403 case IP_FW_RESETLOG: 404 if (IPFW_LOADED) 405 error = ip_fw_ctl_ptr(sopt); 406 else 407 error = ENOPROTOOPT; 408 break; 409 410 case IP_DUMMYNET_CONFIGURE: 411 case IP_DUMMYNET_DEL: 412 case IP_DUMMYNET_FLUSH: 413 error = ip_dn_sockopt(sopt); 414 break ; 415 416 case IP_RSVP_ON: 417 error = ip_rsvp_init(so); 418 break; 419 420 case IP_RSVP_OFF: 421 error = ip_rsvp_done(); 422 break; 423 424 case IP_RSVP_VIF_ON: 425 case IP_RSVP_VIF_OFF: 426 error = ip_rsvp_vif ? 427 ip_rsvp_vif(so, sopt) : EINVAL; 428 break; 429 430 case MRT_INIT: 431 case MRT_DONE: 432 case MRT_ADD_VIF: 433 case MRT_DEL_VIF: 434 case MRT_ADD_MFC: 435 case MRT_DEL_MFC: 436 case MRT_VERSION: 437 case MRT_ASSERT: 438 case MRT_API_SUPPORT: 439 case MRT_API_CONFIG: 440 case MRT_ADD_BW_UPCALL: 441 case MRT_DEL_BW_UPCALL: 442 error = ip_mrouter_set ? ip_mrouter_set(so, sopt) : 443 EOPNOTSUPP; 444 break; 445 446 default: 447 error = ip_ctloutput(so, sopt); 448 break; 449 } 450 break; 451 } 452 453 return (error); 454 } 455 456 /* 457 * This function exists solely to receive the PRC_IFDOWN messages which 458 * are sent by if_down(). It looks for an ifaddr whose ifa_addr is sa, 459 * and calls in_ifadown() to remove all routes corresponding to that address. 460 * It also receives the PRC_IFUP messages from if_up() and reinstalls the 461 * interface routes. 462 */ 463 void 464 rip_ctlinput(int cmd, struct sockaddr *sa, void *vip) 465 { 466 struct in_ifaddr *ia; 467 struct in_ifaddr_container *iac; 468 struct ifnet *ifp; 469 int err; 470 int flags; 471 472 switch (cmd) { 473 case PRC_IFDOWN: 474 TAILQ_FOREACH(iac, &in_ifaddrheads[mycpuid], ia_link) { 475 ia = iac->ia; 476 477 if (ia->ia_ifa.ifa_addr == sa && 478 (ia->ia_flags & IFA_ROUTE)) { 479 /* 480 * in_ifscrub kills the interface route. 481 */ 482 in_ifscrub(ia->ia_ifp, ia); 483 /* 484 * in_ifadown gets rid of all the rest of 485 * the routes. This is not quite the right 486 * thing to do, but at least if we are running 487 * a routing process they will come back. 488 */ 489 in_ifadown(&ia->ia_ifa, 0); 490 break; 491 } 492 } 493 break; 494 495 case PRC_IFUP: 496 ia = NULL; 497 TAILQ_FOREACH(iac, &in_ifaddrheads[mycpuid], ia_link) { 498 if (iac->ia->ia_ifa.ifa_addr == sa) { 499 ia = iac->ia; 500 break; 501 } 502 } 503 if (ia == NULL || (ia->ia_flags & IFA_ROUTE)) 504 return; 505 flags = RTF_UP; 506 ifp = ia->ia_ifa.ifa_ifp; 507 508 if ((ifp->if_flags & IFF_LOOPBACK) || 509 (ifp->if_flags & IFF_POINTOPOINT)) 510 flags |= RTF_HOST; 511 512 err = rtinit(&ia->ia_ifa, RTM_ADD, flags); 513 if (err == 0) 514 ia->ia_flags |= IFA_ROUTE; 515 break; 516 } 517 } 518 519 u_long rip_sendspace = RIPSNDQ; 520 u_long rip_recvspace = RIPRCVQ; 521 522 SYSCTL_INT(_net_inet_raw, OID_AUTO, maxdgram, CTLFLAG_RW, 523 &rip_sendspace, 0, "Maximum outgoing raw IP datagram size"); 524 SYSCTL_INT(_net_inet_raw, OID_AUTO, recvspace, CTLFLAG_RW, 525 &rip_recvspace, 0, "Maximum incoming raw IP datagram size"); 526 527 static int 528 rip_attach(struct socket *so, int proto, struct pru_attach_info *ai) 529 { 530 struct inpcb *inp; 531 int error; 532 int flag; 533 534 if (jailed(ai->p_ucred) && jail_allow_raw_sockets) 535 flag = NULL_CRED_OKAY | PRISON_ROOT; 536 else 537 flag = NULL_CRED_OKAY; 538 539 inp = so->so_pcb; 540 if (inp) 541 panic("rip_attach"); 542 if ((error = suser_cred(ai->p_ucred, flag)) != 0) 543 return error; 544 545 error = soreserve(so, rip_sendspace, rip_recvspace, ai->sb_rlimit); 546 if (error) 547 return error; 548 crit_enter(); 549 error = in_pcballoc(so, &ripcbinfo); 550 crit_exit(); 551 if (error) 552 return error; 553 inp = (struct inpcb *)so->so_pcb; 554 inp->inp_vflag |= INP_IPV4; 555 inp->inp_ip_p = proto; 556 inp->inp_ip_ttl = ip_defttl; 557 return 0; 558 } 559 560 static int 561 rip_detach(struct socket *so) 562 { 563 struct inpcb *inp; 564 565 inp = so->so_pcb; 566 if (inp == 0) 567 panic("rip_detach"); 568 if (so == ip_mrouter && ip_mrouter_done) 569 ip_mrouter_done(); 570 if (ip_rsvp_force_done) 571 ip_rsvp_force_done(so); 572 if (so == ip_rsvpd) 573 ip_rsvp_done(); 574 in_pcbdetach(inp); 575 return 0; 576 } 577 578 static int 579 rip_abort(struct socket *so) 580 { 581 soisdisconnected(so); 582 if (so->so_state & SS_NOFDREF) 583 return rip_detach(so); 584 return 0; 585 } 586 587 static int 588 rip_disconnect(struct socket *so) 589 { 590 if ((so->so_state & SS_ISCONNECTED) == 0) 591 return ENOTCONN; 592 return rip_abort(so); 593 } 594 595 static int 596 rip_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 597 { 598 struct inpcb *inp = so->so_pcb; 599 struct sockaddr_in *addr = (struct sockaddr_in *)nam; 600 601 if (nam->sa_len != sizeof(*addr)) 602 return EINVAL; 603 604 if (TAILQ_EMPTY(&ifnet) || ((addr->sin_family != AF_INET) && 605 (addr->sin_family != AF_IMPLINK)) || 606 (addr->sin_addr.s_addr != INADDR_ANY && 607 ifa_ifwithaddr((struct sockaddr *)addr) == 0)) 608 return EADDRNOTAVAIL; 609 inp->inp_laddr = addr->sin_addr; 610 return 0; 611 } 612 613 static int 614 rip_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 615 { 616 struct inpcb *inp = so->so_pcb; 617 struct sockaddr_in *addr = (struct sockaddr_in *)nam; 618 619 if (nam->sa_len != sizeof(*addr)) 620 return EINVAL; 621 if (TAILQ_EMPTY(&ifnet)) 622 return EADDRNOTAVAIL; 623 if ((addr->sin_family != AF_INET) && 624 (addr->sin_family != AF_IMPLINK)) 625 return EAFNOSUPPORT; 626 inp->inp_faddr = addr->sin_addr; 627 soisconnected(so); 628 return 0; 629 } 630 631 static int 632 rip_shutdown(struct socket *so) 633 { 634 socantsendmore(so); 635 return 0; 636 } 637 638 static int 639 rip_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 640 struct mbuf *control, struct thread *td) 641 { 642 struct inpcb *inp = so->so_pcb; 643 u_long dst; 644 645 if (so->so_state & SS_ISCONNECTED) { 646 if (nam) { 647 m_freem(m); 648 return EISCONN; 649 } 650 dst = inp->inp_faddr.s_addr; 651 } else { 652 if (nam == NULL) { 653 m_freem(m); 654 return ENOTCONN; 655 } 656 dst = ((struct sockaddr_in *)nam)->sin_addr.s_addr; 657 } 658 return rip_output(m, so, dst); 659 } 660 661 SYSCTL_PROC(_net_inet_raw, OID_AUTO/*XXX*/, pcblist, CTLFLAG_RD, &ripcbinfo, 0, 662 in_pcblist_global, "S,xinpcb", "List of active raw IP sockets"); 663 664 struct pr_usrreqs rip_usrreqs = { 665 .pru_abort = rip_abort, 666 .pru_accept = pru_accept_notsupp, 667 .pru_attach = rip_attach, 668 .pru_bind = rip_bind, 669 .pru_connect = rip_connect, 670 .pru_connect2 = pru_connect2_notsupp, 671 .pru_control = in_control, 672 .pru_detach = rip_detach, 673 .pru_disconnect = rip_disconnect, 674 .pru_listen = pru_listen_notsupp, 675 .pru_peeraddr = in_setpeeraddr, 676 .pru_rcvd = pru_rcvd_notsupp, 677 .pru_rcvoob = pru_rcvoob_notsupp, 678 .pru_send = rip_send, 679 .pru_sense = pru_sense_null, 680 .pru_shutdown = rip_shutdown, 681 .pru_sockaddr = in_setsockaddr, 682 .pru_sosend = sosend, 683 .pru_soreceive = soreceive, 684 .pru_sopoll = sopoll 685 }; 686