1 /* $NetBSD: raw_ip.c,v 1.107 2008/04/24 11:38:38 ad 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, 1993 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 * @(#)raw_ip.c 8.7 (Berkeley) 5/15/95 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.107 2008/04/24 11:38:38 ad Exp $"); 65 66 #include "opt_inet.h" 67 #include "opt_ipsec.h" 68 #include "opt_mrouting.h" 69 70 #include <sys/param.h> 71 #include <sys/sysctl.h> 72 #include <sys/malloc.h> 73 #include <sys/mbuf.h> 74 #include <sys/socket.h> 75 #include <sys/protosw.h> 76 #include <sys/socketvar.h> 77 #include <sys/errno.h> 78 #include <sys/systm.h> 79 #include <sys/proc.h> 80 #include <sys/kauth.h> 81 82 #include <net/if.h> 83 #include <net/route.h> 84 85 #include <netinet/in.h> 86 #include <netinet/in_systm.h> 87 #include <netinet/ip.h> 88 #include <netinet/ip_var.h> 89 #include <netinet/ip_private.h> 90 #include <netinet/ip_mroute.h> 91 #include <netinet/ip_icmp.h> 92 #include <netinet/in_pcb.h> 93 #include <netinet/in_proto.h> 94 #include <netinet/in_var.h> 95 96 #include <machine/stdarg.h> 97 98 #ifdef IPSEC 99 #include <netinet6/ipsec.h> 100 #include <netinet6/ipsec_private.h> 101 #endif /* IPSEC */ 102 103 #ifdef FAST_IPSEC 104 #include <netipsec/ipsec.h> 105 #include <netipsec/ipsec_var.h> 106 #include <netipsec/ipsec_private.h> 107 #endif /* FAST_IPSEC */ 108 109 struct inpcbtable rawcbtable; 110 111 int rip_pcbnotify(struct inpcbtable *, struct in_addr, 112 struct in_addr, int, int, void (*)(struct inpcb *, int)); 113 int rip_bind(struct inpcb *, struct mbuf *); 114 int rip_connect(struct inpcb *, struct mbuf *); 115 void rip_disconnect(struct inpcb *); 116 117 /* 118 * Nominal space allocated to a raw ip socket. 119 */ 120 #define RIPSNDQ 8192 121 #define RIPRCVQ 8192 122 123 /* 124 * Raw interface to IP protocol. 125 */ 126 127 /* 128 * Initialize raw connection block q. 129 */ 130 void 131 rip_init(void) 132 { 133 134 in_pcbinit(&rawcbtable, 1, 1); 135 } 136 137 static void 138 rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa, 139 int hlen, struct mbuf *opts, struct mbuf *n) 140 { 141 if (last->inp_flags & INP_NOHEADER) 142 m_adj(n, hlen); 143 if (last->inp_flags & INP_CONTROLOPTS || 144 last->inp_socket->so_options & SO_TIMESTAMP) 145 ip_savecontrol(last, &opts, ip, n); 146 if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) { 147 /* should notify about lost packet */ 148 m_freem(n); 149 if (opts) 150 m_freem(opts); 151 } else 152 sorwakeup(last->inp_socket); 153 } 154 155 /* 156 * Setup generic address and protocol structures 157 * for raw_input routine, then pass them along with 158 * mbuf chain. 159 */ 160 void 161 rip_input(struct mbuf *m, ...) 162 { 163 int hlen, proto; 164 struct ip *ip = mtod(m, struct ip *); 165 struct inpcb_hdr *inph; 166 struct inpcb *inp; 167 struct inpcb *last = NULL; 168 struct mbuf *n, *opts = NULL; 169 struct sockaddr_in ripsrc; 170 va_list ap; 171 172 va_start(ap, m); 173 (void)va_arg(ap, int); /* ignore value, advance ap */ 174 proto = va_arg(ap, int); 175 va_end(ap); 176 177 sockaddr_in_init(&ripsrc, &ip->ip_src, 0); 178 179 /* 180 * XXX Compatibility: programs using raw IP expect ip_len 181 * XXX to have the header length subtracted, and in host order. 182 * XXX ip_off is also expected to be host order. 183 */ 184 hlen = ip->ip_hl << 2; 185 ip->ip_len = ntohs(ip->ip_len) - hlen; 186 NTOHS(ip->ip_off); 187 188 CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) { 189 inp = (struct inpcb *)inph; 190 if (inp->inp_af != AF_INET) 191 continue; 192 if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) 193 continue; 194 if (!in_nullhost(inp->inp_laddr) && 195 !in_hosteq(inp->inp_laddr, ip->ip_dst)) 196 continue; 197 if (!in_nullhost(inp->inp_faddr) && 198 !in_hosteq(inp->inp_faddr, ip->ip_src)) 199 continue; 200 if (last == NULL) 201 ; 202 #if defined(IPSEC) || defined(FAST_IPSEC) 203 /* check AH/ESP integrity. */ 204 else if (ipsec4_in_reject_so(m, last->inp_socket)) { 205 IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); 206 /* do not inject data to pcb */ 207 } 208 #endif /*IPSEC*/ 209 else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { 210 rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, 211 n); 212 opts = NULL; 213 } 214 last = inp; 215 } 216 #if defined(IPSEC) || defined(FAST_IPSEC) 217 /* check AH/ESP integrity. */ 218 if (last != NULL && ipsec4_in_reject_so(m, last->inp_socket)) { 219 m_freem(m); 220 IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); 221 IP_STATDEC(IP_STAT_DELIVERED); 222 /* do not inject data to pcb */ 223 } else 224 #endif /*IPSEC*/ 225 if (last != NULL) 226 rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m); 227 else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) { 228 uint64_t *ips; 229 230 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL, 231 0, 0); 232 ips = IP_STAT_GETREF(); 233 ips[IP_STAT_NOPROTO]++; 234 ips[IP_STAT_DELIVERED]--; 235 IP_STAT_PUTREF(); 236 } else 237 m_freem(m); 238 return; 239 } 240 241 int 242 rip_pcbnotify(struct inpcbtable *table, 243 struct in_addr faddr, struct in_addr laddr, int proto, int errno, 244 void (*notify)(struct inpcb *, int)) 245 { 246 struct inpcb *inp, *ninp; 247 int nmatch; 248 249 nmatch = 0; 250 for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue); 251 inp != (struct inpcb *)&table->inpt_queue; 252 inp = ninp) { 253 ninp = (struct inpcb *)inp->inp_queue.cqe_next; 254 if (inp->inp_af != AF_INET) 255 continue; 256 if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) 257 continue; 258 if (in_hosteq(inp->inp_faddr, faddr) && 259 in_hosteq(inp->inp_laddr, laddr)) { 260 (*notify)(inp, errno); 261 nmatch++; 262 } 263 } 264 265 return nmatch; 266 } 267 268 void * 269 rip_ctlinput(int cmd, const struct sockaddr *sa, void *v) 270 { 271 struct ip *ip = v; 272 void (*notify)(struct inpcb *, int) = in_rtchange; 273 int errno; 274 275 if (sa->sa_family != AF_INET || 276 sa->sa_len != sizeof(struct sockaddr_in)) 277 return NULL; 278 if ((unsigned)cmd >= PRC_NCMDS) 279 return NULL; 280 errno = inetctlerrmap[cmd]; 281 if (PRC_IS_REDIRECT(cmd)) 282 notify = in_rtchange, ip = 0; 283 else if (cmd == PRC_HOSTDEAD) 284 ip = 0; 285 else if (errno == 0) 286 return NULL; 287 if (ip) { 288 rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr, 289 ip->ip_src, ip->ip_p, errno, notify); 290 291 /* XXX mapped address case */ 292 } else 293 in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno, 294 notify); 295 return NULL; 296 } 297 298 /* 299 * Generate IP header and pass packet to ip_output. 300 * Tack on options user may have setup with control call. 301 */ 302 int 303 rip_output(struct mbuf *m, ...) 304 { 305 struct inpcb *inp; 306 struct ip *ip; 307 struct mbuf *opts; 308 int flags; 309 va_list ap; 310 311 va_start(ap, m); 312 inp = va_arg(ap, struct inpcb *); 313 va_end(ap); 314 315 flags = 316 (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST 317 | IP_RETURNMTU; 318 319 /* 320 * If the user handed us a complete IP packet, use it. 321 * Otherwise, allocate an mbuf for a header and fill it in. 322 */ 323 if ((inp->inp_flags & INP_HDRINCL) == 0) { 324 if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) { 325 m_freem(m); 326 return (EMSGSIZE); 327 } 328 M_PREPEND(m, sizeof(struct ip), M_DONTWAIT); 329 if (!m) 330 return (ENOBUFS); 331 ip = mtod(m, struct ip *); 332 ip->ip_tos = 0; 333 ip->ip_off = htons(0); 334 ip->ip_p = inp->inp_ip.ip_p; 335 ip->ip_len = htons(m->m_pkthdr.len); 336 ip->ip_src = inp->inp_laddr; 337 ip->ip_dst = inp->inp_faddr; 338 ip->ip_ttl = MAXTTL; 339 opts = inp->inp_options; 340 } else { 341 if (m->m_pkthdr.len > IP_MAXPACKET) { 342 m_freem(m); 343 return (EMSGSIZE); 344 } 345 ip = mtod(m, struct ip *); 346 347 /* 348 * If the mbuf is read-only, we need to allocate 349 * a new mbuf for the header, since we need to 350 * modify the header. 351 */ 352 if (M_READONLY(m)) { 353 int hlen = ip->ip_hl << 2; 354 355 m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3); 356 if (m == NULL) 357 return (ENOMEM); /* XXX */ 358 ip = mtod(m, struct ip *); 359 } 360 361 /* XXX userland passes ip_len and ip_off in host order */ 362 if (m->m_pkthdr.len != ip->ip_len) { 363 m_freem(m); 364 return (EINVAL); 365 } 366 HTONS(ip->ip_len); 367 HTONS(ip->ip_off); 368 if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE) 369 flags |= IP_NOIPNEWID; 370 opts = NULL; 371 /* XXX prevent ip_output from overwriting header fields */ 372 flags |= IP_RAWOUTPUT; 373 IP_STATINC(IP_STAT_RAWOUT); 374 } 375 return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, 376 inp->inp_socket, &inp->inp_errormtu)); 377 } 378 379 /* 380 * Raw IP socket option processing. 381 */ 382 int 383 rip_ctloutput(int op, struct socket *so, int level, int optname, 384 struct mbuf **m) 385 { 386 struct inpcb *inp = sotoinpcb(so); 387 int error = 0; 388 389 if (level == SOL_SOCKET && optname == SO_NOHEADER) { 390 if (op == PRCO_GETOPT) { 391 *m = m_intopt(so, 392 (inp->inp_flags & INP_NOHEADER) ? 1 : 0); 393 return 0; 394 } else if (*m == NULL || (*m)->m_len != sizeof(int)) 395 error = EINVAL; 396 else if (*mtod(*m, int *)) { 397 inp->inp_flags &= ~INP_HDRINCL; 398 inp->inp_flags |= INP_NOHEADER; 399 } else 400 inp->inp_flags &= ~INP_NOHEADER; 401 goto free_m; 402 } else if (level != IPPROTO_IP) 403 return ip_ctloutput(op, so, level, optname, m); 404 405 switch (op) { 406 407 case PRCO_SETOPT: 408 switch (optname) { 409 case IP_HDRINCL: 410 if (*m == NULL || (*m)->m_len != sizeof(int)) 411 error = EINVAL; 412 else if (*mtod(*m, int *)) 413 inp->inp_flags |= INP_HDRINCL; 414 else 415 inp->inp_flags &= ~INP_HDRINCL; 416 goto free_m; 417 418 #ifdef MROUTING 419 case MRT_INIT: 420 case MRT_DONE: 421 case MRT_ADD_VIF: 422 case MRT_DEL_VIF: 423 case MRT_ADD_MFC: 424 case MRT_DEL_MFC: 425 case MRT_ASSERT: 426 case MRT_API_CONFIG: 427 case MRT_ADD_BW_UPCALL: 428 case MRT_DEL_BW_UPCALL: 429 error = ip_mrouter_set(so, optname, m); 430 break; 431 #endif 432 433 default: 434 error = ip_ctloutput(op, so, level, optname, m); 435 break; 436 } 437 break; 438 439 case PRCO_GETOPT: 440 switch (optname) { 441 case IP_HDRINCL: 442 *m = m_intopt(so, inp->inp_flags & INP_HDRINCL ? 1 : 0); 443 break; 444 445 #ifdef MROUTING 446 case MRT_VERSION: 447 case MRT_ASSERT: 448 case MRT_API_SUPPORT: 449 case MRT_API_CONFIG: 450 error = ip_mrouter_get(so, optname, m); 451 break; 452 #endif 453 454 default: 455 error = ip_ctloutput(op, so, level, optname, m); 456 break; 457 } 458 break; 459 } 460 return error; 461 free_m: 462 if (op == PRCO_SETOPT && *m != NULL) 463 (void)m_free(*m); 464 return error; 465 } 466 467 int 468 rip_bind(struct inpcb *inp, struct mbuf *nam) 469 { 470 struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *); 471 472 if (nam->m_len != sizeof(*addr)) 473 return (EINVAL); 474 if (TAILQ_FIRST(&ifnet) == 0) 475 return (EADDRNOTAVAIL); 476 if (addr->sin_family != AF_INET && 477 addr->sin_family != AF_IMPLINK) 478 return (EAFNOSUPPORT); 479 if (!in_nullhost(addr->sin_addr) && 480 ifa_ifwithaddr(sintosa(addr)) == 0) 481 return (EADDRNOTAVAIL); 482 inp->inp_laddr = addr->sin_addr; 483 return (0); 484 } 485 486 int 487 rip_connect(struct inpcb *inp, struct mbuf *nam) 488 { 489 struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *); 490 491 if (nam->m_len != sizeof(*addr)) 492 return (EINVAL); 493 if (TAILQ_FIRST(&ifnet) == 0) 494 return (EADDRNOTAVAIL); 495 if (addr->sin_family != AF_INET && 496 addr->sin_family != AF_IMPLINK) 497 return (EAFNOSUPPORT); 498 inp->inp_faddr = addr->sin_addr; 499 return (0); 500 } 501 502 void 503 rip_disconnect(struct inpcb *inp) 504 { 505 506 inp->inp_faddr = zeroin_addr; 507 } 508 509 u_long rip_sendspace = RIPSNDQ; 510 u_long rip_recvspace = RIPRCVQ; 511 512 /*ARGSUSED*/ 513 int 514 rip_usrreq(struct socket *so, int req, 515 struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l) 516 { 517 struct inpcb *inp; 518 int s; 519 int error = 0; 520 #ifdef MROUTING 521 extern struct socket *ip_mrouter; 522 #endif 523 524 if (req == PRU_CONTROL) 525 return (in_control(so, (long)m, (void *)nam, 526 (struct ifnet *)control, l)); 527 528 s = splsoftnet(); 529 530 if (req == PRU_PURGEIF) { 531 mutex_enter(softnet_lock); 532 in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control); 533 in_purgeif((struct ifnet *)control); 534 in_pcbpurgeif(&rawcbtable, (struct ifnet *)control); 535 mutex_exit(softnet_lock); 536 splx(s); 537 return (0); 538 } 539 540 inp = sotoinpcb(so); 541 #ifdef DIAGNOSTIC 542 if (req != PRU_SEND && req != PRU_SENDOOB && control) 543 panic("rip_usrreq: unexpected control mbuf"); 544 #endif 545 if (inp == 0 && req != PRU_ATTACH) { 546 error = EINVAL; 547 goto release; 548 } 549 550 switch (req) { 551 552 case PRU_ATTACH: 553 sosetlock(so); 554 if (inp != 0) { 555 error = EISCONN; 556 break; 557 } 558 559 if (l == NULL) { 560 error = EACCES; 561 break; 562 } 563 564 /* XXX: raw socket permissions are checked in socreate() */ 565 566 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 567 error = soreserve(so, rip_sendspace, rip_recvspace); 568 if (error) 569 break; 570 } 571 error = in_pcballoc(so, &rawcbtable); 572 if (error) 573 break; 574 inp = sotoinpcb(so); 575 inp->inp_ip.ip_p = (long)nam; 576 break; 577 578 case PRU_DETACH: 579 #ifdef MROUTING 580 if (so == ip_mrouter) 581 ip_mrouter_done(); 582 #endif 583 in_pcbdetach(inp); 584 break; 585 586 case PRU_BIND: 587 error = rip_bind(inp, nam); 588 break; 589 590 case PRU_LISTEN: 591 error = EOPNOTSUPP; 592 break; 593 594 case PRU_CONNECT: 595 error = rip_connect(inp, nam); 596 if (error) 597 break; 598 soisconnected(so); 599 break; 600 601 case PRU_CONNECT2: 602 error = EOPNOTSUPP; 603 break; 604 605 case PRU_DISCONNECT: 606 soisdisconnected(so); 607 rip_disconnect(inp); 608 break; 609 610 /* 611 * Mark the connection as being incapable of further input. 612 */ 613 case PRU_SHUTDOWN: 614 socantsendmore(so); 615 break; 616 617 case PRU_RCVD: 618 error = EOPNOTSUPP; 619 break; 620 621 /* 622 * Ship a packet out. The appropriate raw output 623 * routine handles any massaging necessary. 624 */ 625 case PRU_SEND: 626 if (control && control->m_len) { 627 m_freem(control); 628 m_freem(m); 629 error = EINVAL; 630 break; 631 } 632 { 633 if (nam) { 634 if ((so->so_state & SS_ISCONNECTED) != 0) { 635 error = EISCONN; 636 goto die; 637 } 638 error = rip_connect(inp, nam); 639 if (error) { 640 die: 641 m_freem(m); 642 break; 643 } 644 } else { 645 if ((so->so_state & SS_ISCONNECTED) == 0) { 646 error = ENOTCONN; 647 goto die; 648 } 649 } 650 error = rip_output(m, inp); 651 if (nam) 652 rip_disconnect(inp); 653 } 654 break; 655 656 case PRU_SENSE: 657 /* 658 * stat: don't bother with a blocksize. 659 */ 660 splx(s); 661 return (0); 662 663 case PRU_RCVOOB: 664 error = EOPNOTSUPP; 665 break; 666 667 case PRU_SENDOOB: 668 m_freem(control); 669 m_freem(m); 670 error = EOPNOTSUPP; 671 break; 672 673 case PRU_SOCKADDR: 674 in_setsockaddr(inp, nam); 675 break; 676 677 case PRU_PEERADDR: 678 in_setpeeraddr(inp, nam); 679 break; 680 681 default: 682 panic("rip_usrreq"); 683 } 684 685 release: 686 splx(s); 687 return (error); 688 } 689 690 SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup") 691 { 692 693 sysctl_createv(clog, 0, NULL, NULL, 694 CTLFLAG_PERMANENT, 695 CTLTYPE_NODE, "net", NULL, 696 NULL, 0, NULL, 0, 697 CTL_NET, CTL_EOL); 698 sysctl_createv(clog, 0, NULL, NULL, 699 CTLFLAG_PERMANENT, 700 CTLTYPE_NODE, "inet", NULL, 701 NULL, 0, NULL, 0, 702 CTL_NET, PF_INET, CTL_EOL); 703 sysctl_createv(clog, 0, NULL, NULL, 704 CTLFLAG_PERMANENT, 705 CTLTYPE_NODE, "raw", 706 SYSCTL_DESCR("Raw IPv4 settings"), 707 NULL, 0, NULL, 0, 708 CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL); 709 710 sysctl_createv(clog, 0, NULL, NULL, 711 CTLFLAG_PERMANENT, 712 CTLTYPE_STRUCT, "pcblist", 713 SYSCTL_DESCR("Raw IPv4 control block list"), 714 sysctl_inpcblist, 0, &rawcbtable, 0, 715 CTL_NET, PF_INET, IPPROTO_RAW, 716 CTL_CREATE, CTL_EOL); 717 } 718