1 /* $NetBSD: raw_ip.c,v 1.153 2015/08/24 22:21:26 pooka 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 /* 64 * Raw interface to IP protocol. 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.153 2015/08/24 22:21:26 pooka Exp $"); 69 70 #ifdef _KERNEL_OPT 71 #include "opt_inet.h" 72 #include "opt_compat_netbsd.h" 73 #include "opt_ipsec.h" 74 #include "opt_mrouting.h" 75 #endif 76 77 #include <sys/param.h> 78 #include <sys/sysctl.h> 79 #include <sys/mbuf.h> 80 #include <sys/socket.h> 81 #include <sys/protosw.h> 82 #include <sys/socketvar.h> 83 #include <sys/errno.h> 84 #include <sys/systm.h> 85 #include <sys/proc.h> 86 #include <sys/kauth.h> 87 88 #include <net/if.h> 89 #include <net/route.h> 90 91 #include <netinet/in.h> 92 #include <netinet/in_systm.h> 93 #include <netinet/ip.h> 94 #include <netinet/ip_var.h> 95 #include <netinet/ip_private.h> 96 #include <netinet/ip_mroute.h> 97 #include <netinet/ip_icmp.h> 98 #include <netinet/in_pcb.h> 99 #include <netinet/in_proto.h> 100 #include <netinet/in_var.h> 101 102 #ifdef IPSEC 103 #include <netipsec/ipsec.h> 104 #include <netipsec/ipsec_var.h> 105 #include <netipsec/ipsec_private.h> 106 #endif /* IPSEC */ 107 108 #ifdef COMPAT_50 109 #include <compat/sys/socket.h> 110 #endif 111 112 struct inpcbtable rawcbtable; 113 114 int rip_pcbnotify(struct inpcbtable *, struct in_addr, 115 struct in_addr, int, int, void (*)(struct inpcb *, int)); 116 static int rip_connect_pcb(struct inpcb *, struct sockaddr_in *); 117 static void rip_disconnect1(struct inpcb *); 118 119 static void sysctl_net_inet_raw_setup(struct sysctllog **); 120 121 /* 122 * Nominal space allocated to a raw ip socket. 123 */ 124 #define RIPSNDQ 8192 125 #define RIPRCVQ 8192 126 127 static u_long rip_sendspace = RIPSNDQ; 128 static u_long rip_recvspace = RIPRCVQ; 129 130 /* 131 * Raw interface to IP protocol. 132 */ 133 134 /* 135 * Initialize raw connection block q. 136 */ 137 void 138 rip_init(void) 139 { 140 141 sysctl_net_inet_raw_setup(NULL); 142 in_pcbinit(&rawcbtable, 1, 1); 143 } 144 145 static void 146 rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa, 147 int hlen, struct mbuf *opts, struct mbuf *n) 148 { 149 if (last->inp_flags & INP_NOHEADER) 150 m_adj(n, hlen); 151 if (last->inp_flags & INP_CONTROLOPTS 152 #ifdef SO_OTIMESTAMP 153 || last->inp_socket->so_options & SO_OTIMESTAMP 154 #endif 155 || last->inp_socket->so_options & SO_TIMESTAMP) 156 ip_savecontrol(last, &opts, ip, n); 157 if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) { 158 /* should notify about lost packet */ 159 m_freem(n); 160 if (opts) 161 m_freem(opts); 162 } else 163 sorwakeup(last->inp_socket); 164 } 165 166 /* 167 * Setup generic address and protocol structures 168 * for raw_input routine, then pass them along with 169 * mbuf chain. 170 */ 171 void 172 rip_input(struct mbuf *m, ...) 173 { 174 int hlen, proto; 175 struct ip *ip = mtod(m, struct ip *); 176 struct inpcb_hdr *inph; 177 struct inpcb *inp; 178 struct inpcb *last = NULL; 179 struct mbuf *n, *opts = NULL; 180 struct sockaddr_in ripsrc; 181 va_list ap; 182 183 va_start(ap, m); 184 (void)va_arg(ap, int); /* ignore value, advance ap */ 185 proto = va_arg(ap, int); 186 va_end(ap); 187 188 sockaddr_in_init(&ripsrc, &ip->ip_src, 0); 189 190 /* 191 * XXX Compatibility: programs using raw IP expect ip_len 192 * XXX to have the header length subtracted, and in host order. 193 * XXX ip_off is also expected to be host order. 194 */ 195 hlen = ip->ip_hl << 2; 196 ip->ip_len = ntohs(ip->ip_len) - hlen; 197 NTOHS(ip->ip_off); 198 199 TAILQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) { 200 inp = (struct inpcb *)inph; 201 if (inp->inp_af != AF_INET) 202 continue; 203 if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) 204 continue; 205 if (!in_nullhost(inp->inp_laddr) && 206 !in_hosteq(inp->inp_laddr, ip->ip_dst)) 207 continue; 208 if (!in_nullhost(inp->inp_faddr) && 209 !in_hosteq(inp->inp_faddr, ip->ip_src)) 210 continue; 211 if (last == NULL) 212 ; 213 #if defined(IPSEC) 214 /* check AH/ESP integrity. */ 215 else if (ipsec_used && 216 ipsec4_in_reject_so(m, last->inp_socket)) { 217 IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); 218 /* do not inject data to pcb */ 219 } 220 #endif /*IPSEC*/ 221 else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { 222 rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, 223 n); 224 opts = NULL; 225 } 226 last = inp; 227 } 228 #if defined(IPSEC) 229 /* check AH/ESP integrity. */ 230 if (ipsec_used && last != NULL 231 && ipsec4_in_reject_so(m, last->inp_socket)) { 232 m_freem(m); 233 IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); 234 IP_STATDEC(IP_STAT_DELIVERED); 235 /* do not inject data to pcb */ 236 } else 237 #endif /*IPSEC*/ 238 if (last != NULL) 239 rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m); 240 else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) { 241 uint64_t *ips; 242 243 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL, 244 0, 0); 245 ips = IP_STAT_GETREF(); 246 ips[IP_STAT_NOPROTO]++; 247 ips[IP_STAT_DELIVERED]--; 248 IP_STAT_PUTREF(); 249 } else 250 m_freem(m); 251 return; 252 } 253 254 int 255 rip_pcbnotify(struct inpcbtable *table, 256 struct in_addr faddr, struct in_addr laddr, int proto, int errno, 257 void (*notify)(struct inpcb *, int)) 258 { 259 struct inpcb_hdr *inph, *ninph; 260 int nmatch; 261 262 nmatch = 0; 263 TAILQ_FOREACH_SAFE(inph, &table->inpt_queue, inph_queue, ninph) { 264 struct inpcb *inp = (struct inpcb *)inph; 265 if (inp->inp_af != AF_INET) 266 continue; 267 if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) 268 continue; 269 if (in_hosteq(inp->inp_faddr, faddr) && 270 in_hosteq(inp->inp_laddr, laddr)) { 271 (*notify)(inp, errno); 272 nmatch++; 273 } 274 } 275 276 return nmatch; 277 } 278 279 void * 280 rip_ctlinput(int cmd, const struct sockaddr *sa, void *v) 281 { 282 struct ip *ip = v; 283 void (*notify)(struct inpcb *, int) = in_rtchange; 284 int errno; 285 286 if (sa->sa_family != AF_INET || 287 sa->sa_len != sizeof(struct sockaddr_in)) 288 return NULL; 289 if ((unsigned)cmd >= PRC_NCMDS) 290 return NULL; 291 errno = inetctlerrmap[cmd]; 292 if (PRC_IS_REDIRECT(cmd)) 293 notify = in_rtchange, ip = 0; 294 else if (cmd == PRC_HOSTDEAD) 295 ip = 0; 296 else if (errno == 0) 297 return NULL; 298 if (ip) { 299 rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr, 300 ip->ip_src, ip->ip_p, errno, notify); 301 302 /* XXX mapped address case */ 303 } else 304 in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno, 305 notify); 306 return NULL; 307 } 308 309 /* 310 * Generate IP header and pass packet to ip_output. 311 * Tack on options user may have setup with control call. 312 */ 313 int 314 rip_output(struct mbuf *m, ...) 315 { 316 struct inpcb *inp; 317 struct ip *ip; 318 struct mbuf *opts; 319 int flags; 320 va_list ap; 321 322 va_start(ap, m); 323 inp = va_arg(ap, struct inpcb *); 324 va_end(ap); 325 326 flags = 327 (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST 328 | IP_RETURNMTU; 329 330 /* 331 * If the user handed us a complete IP packet, use it. 332 * Otherwise, allocate an mbuf for a header and fill it in. 333 */ 334 if ((inp->inp_flags & INP_HDRINCL) == 0) { 335 if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) { 336 m_freem(m); 337 return (EMSGSIZE); 338 } 339 M_PREPEND(m, sizeof(struct ip), M_DONTWAIT); 340 if (!m) 341 return (ENOBUFS); 342 ip = mtod(m, struct ip *); 343 ip->ip_tos = 0; 344 ip->ip_off = htons(0); 345 ip->ip_p = inp->inp_ip.ip_p; 346 ip->ip_len = htons(m->m_pkthdr.len); 347 ip->ip_src = inp->inp_laddr; 348 ip->ip_dst = inp->inp_faddr; 349 ip->ip_ttl = MAXTTL; 350 opts = inp->inp_options; 351 } else { 352 if (m->m_pkthdr.len > IP_MAXPACKET) { 353 m_freem(m); 354 return (EMSGSIZE); 355 } 356 ip = mtod(m, struct ip *); 357 358 /* 359 * If the mbuf is read-only, we need to allocate 360 * a new mbuf for the header, since we need to 361 * modify the header. 362 */ 363 if (M_READONLY(m)) { 364 int hlen = ip->ip_hl << 2; 365 366 m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3); 367 if (m == NULL) 368 return (ENOMEM); /* XXX */ 369 ip = mtod(m, struct ip *); 370 } 371 372 /* XXX userland passes ip_len and ip_off in host order */ 373 if (m->m_pkthdr.len != ip->ip_len) { 374 m_freem(m); 375 return (EINVAL); 376 } 377 HTONS(ip->ip_len); 378 HTONS(ip->ip_off); 379 if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE) 380 flags |= IP_NOIPNEWID; 381 opts = NULL; 382 /* XXX prevent ip_output from overwriting header fields */ 383 flags |= IP_RAWOUTPUT; 384 IP_STATINC(IP_STAT_RAWOUT); 385 } 386 387 /* 388 * IP output. Note: if IP_RETURNMTU flag is set, the MTU size 389 * will be stored in inp_errormtu. 390 */ 391 return ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, 392 inp->inp_socket); 393 } 394 395 /* 396 * Raw IP socket option processing. 397 */ 398 int 399 rip_ctloutput(int op, struct socket *so, struct sockopt *sopt) 400 { 401 struct inpcb *inp = sotoinpcb(so); 402 int error = 0; 403 int optval; 404 405 if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) { 406 if (op == PRCO_GETOPT) { 407 optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0; 408 error = sockopt_set(sopt, &optval, sizeof(optval)); 409 } else if (op == PRCO_SETOPT) { 410 error = sockopt_getint(sopt, &optval); 411 if (error) 412 goto out; 413 if (optval) { 414 inp->inp_flags &= ~INP_HDRINCL; 415 inp->inp_flags |= INP_NOHEADER; 416 } else 417 inp->inp_flags &= ~INP_NOHEADER; 418 } 419 goto out; 420 } else if (sopt->sopt_level != IPPROTO_IP) 421 return ip_ctloutput(op, so, sopt); 422 423 switch (op) { 424 425 case PRCO_SETOPT: 426 switch (sopt->sopt_name) { 427 case IP_HDRINCL: 428 error = sockopt_getint(sopt, &optval); 429 if (error) 430 break; 431 if (optval) 432 inp->inp_flags |= INP_HDRINCL; 433 else 434 inp->inp_flags &= ~INP_HDRINCL; 435 break; 436 437 #ifdef MROUTING 438 case MRT_INIT: 439 case MRT_DONE: 440 case MRT_ADD_VIF: 441 case MRT_DEL_VIF: 442 case MRT_ADD_MFC: 443 case MRT_DEL_MFC: 444 case MRT_ASSERT: 445 case MRT_API_CONFIG: 446 case MRT_ADD_BW_UPCALL: 447 case MRT_DEL_BW_UPCALL: 448 error = ip_mrouter_set(so, sopt); 449 break; 450 #endif 451 452 default: 453 error = ip_ctloutput(op, so, sopt); 454 break; 455 } 456 break; 457 458 case PRCO_GETOPT: 459 switch (sopt->sopt_name) { 460 case IP_HDRINCL: 461 optval = inp->inp_flags & INP_HDRINCL; 462 error = sockopt_set(sopt, &optval, sizeof(optval)); 463 break; 464 465 #ifdef MROUTING 466 case MRT_VERSION: 467 case MRT_ASSERT: 468 case MRT_API_SUPPORT: 469 case MRT_API_CONFIG: 470 error = ip_mrouter_get(so, sopt); 471 break; 472 #endif 473 474 default: 475 error = ip_ctloutput(op, so, sopt); 476 break; 477 } 478 break; 479 } 480 out: 481 return error; 482 } 483 484 int 485 rip_connect_pcb(struct inpcb *inp, struct sockaddr_in *addr) 486 { 487 488 if (IFNET_EMPTY()) 489 return (EADDRNOTAVAIL); 490 if (addr->sin_family != AF_INET) 491 return (EAFNOSUPPORT); 492 inp->inp_faddr = addr->sin_addr; 493 return (0); 494 } 495 496 static void 497 rip_disconnect1(struct inpcb *inp) 498 { 499 500 inp->inp_faddr = zeroin_addr; 501 } 502 503 static int 504 rip_attach(struct socket *so, int proto) 505 { 506 struct inpcb *inp; 507 int error; 508 509 KASSERT(sotoinpcb(so) == NULL); 510 sosetlock(so); 511 512 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 513 error = soreserve(so, rip_sendspace, rip_recvspace); 514 if (error) { 515 return error; 516 } 517 } 518 519 error = in_pcballoc(so, &rawcbtable); 520 if (error) { 521 return error; 522 } 523 inp = sotoinpcb(so); 524 inp->inp_ip.ip_p = proto; 525 KASSERT(solocked(so)); 526 527 return 0; 528 } 529 530 static void 531 rip_detach(struct socket *so) 532 { 533 struct inpcb *inp; 534 535 KASSERT(solocked(so)); 536 inp = sotoinpcb(so); 537 KASSERT(inp != NULL); 538 539 #ifdef MROUTING 540 extern struct socket *ip_mrouter; 541 if (so == ip_mrouter) { 542 ip_mrouter_done(); 543 } 544 #endif 545 in_pcbdetach(inp); 546 } 547 548 static int 549 rip_accept(struct socket *so, struct sockaddr *nam) 550 { 551 KASSERT(solocked(so)); 552 553 panic("rip_accept"); 554 555 return EOPNOTSUPP; 556 } 557 558 static int 559 rip_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 560 { 561 struct inpcb *inp = sotoinpcb(so); 562 struct sockaddr_in *addr = (struct sockaddr_in *)nam; 563 int error = 0; 564 int s; 565 struct ifaddr *ia; 566 567 KASSERT(solocked(so)); 568 KASSERT(inp != NULL); 569 KASSERT(nam != NULL); 570 571 if (addr->sin_len != sizeof(*addr)) 572 return EINVAL; 573 574 s = splsoftnet(); 575 if (IFNET_EMPTY()) { 576 error = EADDRNOTAVAIL; 577 goto release; 578 } 579 if (addr->sin_family != AF_INET) { 580 error = EAFNOSUPPORT; 581 goto release; 582 } 583 if ((ia = ifa_ifwithaddr(sintosa(addr))) == 0 && 584 !in_nullhost(addr->sin_addr)) 585 { 586 error = EADDRNOTAVAIL; 587 goto release; 588 } 589 if (ia && ((struct in_ifaddr *)ia)->ia4_flags & 590 (IN6_IFF_NOTREADY | IN_IFF_DETACHED)) 591 { 592 error = EADDRNOTAVAIL; 593 goto release; 594 } 595 596 inp->inp_laddr = addr->sin_addr; 597 598 release: 599 splx(s); 600 return error; 601 } 602 603 static int 604 rip_listen(struct socket *so, struct lwp *l) 605 { 606 KASSERT(solocked(so)); 607 608 return EOPNOTSUPP; 609 } 610 611 static int 612 rip_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 613 { 614 struct inpcb *inp = sotoinpcb(so); 615 int error = 0; 616 int s; 617 618 KASSERT(solocked(so)); 619 KASSERT(inp != NULL); 620 KASSERT(nam != NULL); 621 622 s = splsoftnet(); 623 error = rip_connect_pcb(inp, (struct sockaddr_in *)nam); 624 if (! error) 625 soisconnected(so); 626 splx(s); 627 628 return error; 629 } 630 631 static int 632 rip_connect2(struct socket *so, struct socket *so2) 633 { 634 KASSERT(solocked(so)); 635 636 return EOPNOTSUPP; 637 } 638 639 static int 640 rip_disconnect(struct socket *so) 641 { 642 struct inpcb *inp = sotoinpcb(so); 643 int s; 644 645 KASSERT(solocked(so)); 646 KASSERT(inp != NULL); 647 648 s = splsoftnet(); 649 soisdisconnected(so); 650 rip_disconnect1(inp); 651 splx(s); 652 653 return 0; 654 } 655 656 static int 657 rip_shutdown(struct socket *so) 658 { 659 int s; 660 661 KASSERT(solocked(so)); 662 663 /* 664 * Mark the connection as being incapable of further input. 665 */ 666 s = splsoftnet(); 667 socantsendmore(so); 668 splx(s); 669 670 return 0; 671 } 672 673 static int 674 rip_abort(struct socket *so) 675 { 676 KASSERT(solocked(so)); 677 678 panic("rip_abort"); 679 680 return EOPNOTSUPP; 681 } 682 683 static int 684 rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 685 { 686 return in_control(so, cmd, nam, ifp); 687 } 688 689 static int 690 rip_stat(struct socket *so, struct stat *ub) 691 { 692 KASSERT(solocked(so)); 693 694 /* stat: don't bother with a blocksize. */ 695 return 0; 696 } 697 698 static int 699 rip_peeraddr(struct socket *so, struct sockaddr *nam) 700 { 701 int s; 702 703 KASSERT(solocked(so)); 704 KASSERT(sotoinpcb(so) != NULL); 705 KASSERT(nam != NULL); 706 707 s = splsoftnet(); 708 in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam); 709 splx(s); 710 711 return 0; 712 } 713 714 static int 715 rip_sockaddr(struct socket *so, struct sockaddr *nam) 716 { 717 int s; 718 719 KASSERT(solocked(so)); 720 KASSERT(sotoinpcb(so) != NULL); 721 KASSERT(nam != NULL); 722 723 s = splsoftnet(); 724 in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam); 725 splx(s); 726 727 return 0; 728 } 729 730 static int 731 rip_rcvd(struct socket *so, int flags, struct lwp *l) 732 { 733 KASSERT(solocked(so)); 734 735 return EOPNOTSUPP; 736 } 737 738 static int 739 rip_recvoob(struct socket *so, struct mbuf *m, int flags) 740 { 741 KASSERT(solocked(so)); 742 743 return EOPNOTSUPP; 744 } 745 746 static int 747 rip_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 748 struct mbuf *control, struct lwp *l) 749 { 750 struct inpcb *inp = sotoinpcb(so); 751 int error = 0; 752 int s; 753 754 KASSERT(solocked(so)); 755 KASSERT(inp != NULL); 756 KASSERT(m != NULL); 757 758 /* 759 * Ship a packet out. The appropriate raw output 760 * routine handles any massaging necessary. 761 */ 762 if (control && control->m_len) { 763 m_freem(control); 764 m_freem(m); 765 return EINVAL; 766 } 767 768 s = splsoftnet(); 769 if (nam) { 770 if ((so->so_state & SS_ISCONNECTED) != 0) { 771 error = EISCONN; 772 goto die; 773 } 774 error = rip_connect_pcb(inp, (struct sockaddr_in *)nam); 775 if (error) { 776 die: 777 m_freem(m); 778 splx(s); 779 return error; 780 } 781 } else { 782 if ((so->so_state & SS_ISCONNECTED) == 0) { 783 error = ENOTCONN; 784 goto die; 785 } 786 } 787 error = rip_output(m, inp); 788 if (nam) 789 rip_disconnect1(inp); 790 791 splx(s); 792 return error; 793 } 794 795 static int 796 rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 797 { 798 KASSERT(solocked(so)); 799 800 m_freem(m); 801 m_freem(control); 802 803 return EOPNOTSUPP; 804 } 805 806 static int 807 rip_purgeif(struct socket *so, struct ifnet *ifp) 808 { 809 int s; 810 811 s = splsoftnet(); 812 mutex_enter(softnet_lock); 813 in_pcbpurgeif0(&rawcbtable, ifp); 814 in_purgeif(ifp); 815 in_pcbpurgeif(&rawcbtable, ifp); 816 mutex_exit(softnet_lock); 817 splx(s); 818 819 return 0; 820 } 821 822 PR_WRAP_USRREQS(rip) 823 #define rip_attach rip_attach_wrapper 824 #define rip_detach rip_detach_wrapper 825 #define rip_accept rip_accept_wrapper 826 #define rip_bind rip_bind_wrapper 827 #define rip_listen rip_listen_wrapper 828 #define rip_connect rip_connect_wrapper 829 #define rip_connect2 rip_connect2_wrapper 830 #define rip_disconnect rip_disconnect_wrapper 831 #define rip_shutdown rip_shutdown_wrapper 832 #define rip_abort rip_abort_wrapper 833 #define rip_ioctl rip_ioctl_wrapper 834 #define rip_stat rip_stat_wrapper 835 #define rip_peeraddr rip_peeraddr_wrapper 836 #define rip_sockaddr rip_sockaddr_wrapper 837 #define rip_rcvd rip_rcvd_wrapper 838 #define rip_recvoob rip_recvoob_wrapper 839 #define rip_send rip_send_wrapper 840 #define rip_sendoob rip_sendoob_wrapper 841 #define rip_purgeif rip_purgeif_wrapper 842 843 const struct pr_usrreqs rip_usrreqs = { 844 .pr_attach = rip_attach, 845 .pr_detach = rip_detach, 846 .pr_accept = rip_accept, 847 .pr_bind = rip_bind, 848 .pr_listen = rip_listen, 849 .pr_connect = rip_connect, 850 .pr_connect2 = rip_connect2, 851 .pr_disconnect = rip_disconnect, 852 .pr_shutdown = rip_shutdown, 853 .pr_abort = rip_abort, 854 .pr_ioctl = rip_ioctl, 855 .pr_stat = rip_stat, 856 .pr_peeraddr = rip_peeraddr, 857 .pr_sockaddr = rip_sockaddr, 858 .pr_rcvd = rip_rcvd, 859 .pr_recvoob = rip_recvoob, 860 .pr_send = rip_send, 861 .pr_sendoob = rip_sendoob, 862 .pr_purgeif = rip_purgeif, 863 }; 864 865 static void 866 sysctl_net_inet_raw_setup(struct sysctllog **clog) 867 { 868 869 sysctl_createv(clog, 0, NULL, NULL, 870 CTLFLAG_PERMANENT, 871 CTLTYPE_NODE, "inet", NULL, 872 NULL, 0, NULL, 0, 873 CTL_NET, PF_INET, CTL_EOL); 874 sysctl_createv(clog, 0, NULL, NULL, 875 CTLFLAG_PERMANENT, 876 CTLTYPE_NODE, "raw", 877 SYSCTL_DESCR("Raw IPv4 settings"), 878 NULL, 0, NULL, 0, 879 CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL); 880 881 sysctl_createv(clog, 0, NULL, NULL, 882 CTLFLAG_PERMANENT, 883 CTLTYPE_STRUCT, "pcblist", 884 SYSCTL_DESCR("Raw IPv4 control block list"), 885 sysctl_inpcblist, 0, &rawcbtable, 0, 886 CTL_NET, PF_INET, IPPROTO_RAW, 887 CTL_CREATE, CTL_EOL); 888 } 889