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 1.16 2004/06/07 02:36:22 dillon Exp $ 36 */ 37 38 #include "opt_inet6.h" 39 #include "opt_ipsec.h" 40 #include "opt_random_ip_id.h" 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.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 53 #include <machine/stdarg.h> 54 55 #include <vm/vm_zone.h> 56 57 #include <net/if.h> 58 #include <net/route.h> 59 60 #define _IP_VHL 61 #include <netinet/in.h> 62 #include <netinet/in_systm.h> 63 #include <netinet/ip.h> 64 #include <netinet/in_pcb.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip_var.h> 67 68 #include <net/ip_mroute/ip_mroute.h> 69 #include <net/ipfw/ip_fw.h> 70 #include <net/dummynet/ip_dummynet.h> 71 72 #ifdef FAST_IPSEC 73 #include <netipsec/ipsec.h> 74 #endif /*FAST_IPSEC*/ 75 76 #ifdef IPSEC 77 #include <netinet6/ipsec.h> 78 #endif /*IPSEC*/ 79 80 struct inpcbinfo ripcbinfo; 81 82 /* control hooks for ipfw and dummynet */ 83 ip_fw_ctl_t *ip_fw_ctl_ptr; 84 ip_dn_ctl_t *ip_dn_ctl_ptr; 85 86 /* 87 * hooks for multicast routing. They all default to NULL, 88 * so leave them not initialized and rely on BSS being set to 0. 89 */ 90 91 /* The socket used to communicate with the multicast routing daemon. */ 92 struct socket *ip_mrouter; 93 94 /* The various mrouter and rsvp functions */ 95 int (*ip_mrouter_set)(struct socket *, struct sockopt *); 96 int (*ip_mrouter_get)(struct socket *, struct sockopt *); 97 int (*ip_mrouter_done)(void); 98 int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *, 99 struct ip_moptions *); 100 int (*mrt_ioctl)(int, caddr_t); 101 int (*legal_vif_num)(int); 102 u_long (*ip_mcast_src)(int); 103 104 void (*rsvp_input_p)(struct mbuf *m, ...); 105 int (*ip_rsvp_vif)(struct socket *, struct sockopt *); 106 void (*ip_rsvp_force_done)(struct socket *); 107 108 /* 109 * Nominal space allocated to a raw ip socket. 110 */ 111 #define RIPSNDQ 8192 112 #define RIPRCVQ 8192 113 114 /* 115 * Raw interface to IP protocol. 116 */ 117 118 /* 119 * Initialize raw connection block queue. 120 */ 121 void 122 rip_init(void) 123 { 124 in_pcbinfo_init(&ripcbinfo); 125 /* 126 * XXX We don't use the hash list for raw IP, but it's easier 127 * to allocate a one entry hash list than it is to check all 128 * over the place for hashbase == NULL. 129 */ 130 ripcbinfo.hashbase = hashinit(1, M_PCB, &ripcbinfo.hashmask); 131 ripcbinfo.porthashbase = hashinit(1, M_PCB, &ripcbinfo.porthashmask); 132 ripcbinfo.wildcardhashbase = hashinit(1, M_PCB, 133 &ripcbinfo.wildcardhashmask); 134 ripcbinfo.ipi_zone = zinit("ripcb", sizeof(struct inpcb), 135 maxsockets, ZONE_INTERRUPT, 0); 136 } 137 138 /* 139 * XXX ripsrc is modified in rip_input, so we must be fix this 140 * when we want to make this code smp-friendly. 141 */ 142 static struct sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET }; 143 144 /* 145 * Setup generic address and protocol structures 146 * for raw_input routine, then pass them along with 147 * mbuf chain. 148 */ 149 void 150 rip_input(struct mbuf *m, ...) 151 { 152 struct ip *ip = mtod(m, struct ip *); 153 struct inpcb *inp; 154 struct inpcb *last = NULL; 155 struct mbuf *opts = NULL; 156 int off, proto; 157 __va_list ap; 158 159 __va_start(ap, m); 160 off = __va_arg(ap, int); 161 proto = __va_arg(ap, int); 162 __va_end(ap); 163 164 ripsrc.sin_addr = ip->ip_src; 165 LIST_FOREACH(inp, &ripcbinfo.pcblisthead, inp_list) { 166 if (inp->inp_flags & INP_PLACEMARKER) 167 continue; 168 #ifdef INET6 169 if ((inp->inp_vflag & INP_IPV4) == 0) 170 continue; 171 #endif 172 if (inp->inp_ip_p && inp->inp_ip_p != proto) 173 continue; 174 if (inp->inp_laddr.s_addr != INADDR_ANY && 175 inp->inp_laddr.s_addr != ip->ip_dst.s_addr) 176 continue; 177 if (inp->inp_faddr.s_addr != INADDR_ANY && 178 inp->inp_faddr.s_addr != ip->ip_src.s_addr) 179 continue; 180 if (last) { 181 struct mbuf *n = m_copypacket(m, MB_DONTWAIT); 182 183 #ifdef IPSEC 184 /* check AH/ESP integrity. */ 185 if (n && ipsec4_in_reject_so(n, last->inp_socket)) { 186 m_freem(n); 187 ipsecstat.in_polvio++; 188 /* do not inject data to pcb */ 189 } else 190 #endif /*IPSEC*/ 191 #ifdef FAST_IPSEC 192 /* check AH/ESP integrity. */ 193 if (ipsec4_in_reject(n, last)) { 194 m_freem(n); 195 /* do not inject data to pcb */ 196 } else 197 #endif /*FAST_IPSEC*/ 198 if (n) { 199 if (last->inp_flags & INP_CONTROLOPTS || 200 last->inp_socket->so_options & SO_TIMESTAMP) 201 ip_savecontrol(last, &opts, ip, n); 202 if (sbappendaddr(&last->inp_socket->so_rcv, 203 (struct sockaddr *)&ripsrc, n, 204 opts) == 0) { 205 /* should notify about lost packet */ 206 m_freem(n); 207 if (opts) 208 m_freem(opts); 209 } else 210 sorwakeup(last->inp_socket); 211 opts = 0; 212 } 213 } 214 last = inp; 215 } 216 #ifdef IPSEC 217 /* check AH/ESP integrity. */ 218 if (last && ipsec4_in_reject_so(m, last->inp_socket)) { 219 m_freem(m); 220 ipsecstat.in_polvio++; 221 ipstat.ips_delivered--; 222 /* do not inject data to pcb */ 223 } else 224 #endif /*IPSEC*/ 225 #ifdef FAST_IPSEC 226 /* check AH/ESP integrity. */ 227 if (last && ipsec4_in_reject(m, last)) { 228 m_freem(m); 229 ipstat.ips_delivered--; 230 /* do not inject data to pcb */ 231 } else 232 #endif /*FAST_IPSEC*/ 233 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 (sbappendaddr(&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 = sotoinpcb(so); 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 if (m->m_pkthdr.len > IP_MAXPACKET) { 290 m_freem(m); 291 return(EMSGSIZE); 292 } 293 ip = mtod(m, struct ip *); 294 /* don't allow both user specified and setsockopt options, 295 and don't allow packet length sizes that will crash */ 296 if (((IP_VHL_HL(ip->ip_vhl) != (sizeof (*ip) >> 2)) 297 && inp->inp_options) 298 || (ip->ip_len > m->m_pkthdr.len) 299 || (ip->ip_len < (IP_VHL_HL(ip->ip_vhl) << 2))) { 300 m_freem(m); 301 return EINVAL; 302 } 303 if (ip->ip_id == 0) 304 #ifdef RANDOM_IP_ID 305 ip->ip_id = ip_randomid(); 306 #else 307 ip->ip_id = htons(ip_id++); 308 #endif 309 /* XXX prevent ip_output from overwriting header fields */ 310 flags |= IP_RAWOUTPUT; 311 ipstat.ips_rawout++; 312 } 313 314 return (ip_output(m, inp->inp_options, &inp->inp_route, flags, 315 inp->inp_moptions, inp)); 316 } 317 318 /* 319 * Raw IP socket option processing. 320 */ 321 int 322 rip_ctloutput(struct socket *so, struct sockopt *sopt) 323 { 324 struct inpcb *inp = sotoinpcb(so); 325 int error, optval; 326 327 if (sopt->sopt_level != IPPROTO_IP) 328 return (EINVAL); 329 330 error = 0; 331 332 switch (sopt->sopt_dir) { 333 case SOPT_GET: 334 switch (sopt->sopt_name) { 335 case IP_HDRINCL: 336 optval = inp->inp_flags & INP_HDRINCL; 337 error = sooptcopyout(sopt, &optval, sizeof optval); 338 break; 339 340 case IP_FW_ADD: /* ADD actually returns the body... */ 341 case IP_FW_GET: 342 if (IPFW_LOADED) 343 error = ip_fw_ctl_ptr(sopt); 344 else 345 error = ENOPROTOOPT; 346 break; 347 348 case IP_DUMMYNET_GET: 349 if (DUMMYNET_LOADED) 350 error = ip_dn_ctl_ptr(sopt); 351 else 352 error = ENOPROTOOPT; 353 break ; 354 355 case MRT_INIT: 356 case MRT_DONE: 357 case MRT_ADD_VIF: 358 case MRT_DEL_VIF: 359 case MRT_ADD_MFC: 360 case MRT_DEL_MFC: 361 case MRT_VERSION: 362 case MRT_ASSERT: 363 case MRT_API_SUPPORT: 364 case MRT_API_CONFIG: 365 case MRT_ADD_BW_UPCALL: 366 case MRT_DEL_BW_UPCALL: 367 error = ip_mrouter_get ? ip_mrouter_get(so, sopt) : 368 EOPNOTSUPP; 369 break; 370 371 default: 372 error = ip_ctloutput(so, sopt); 373 break; 374 } 375 break; 376 377 case SOPT_SET: 378 switch (sopt->sopt_name) { 379 case IP_HDRINCL: 380 error = sooptcopyin(sopt, &optval, sizeof optval, 381 sizeof optval); 382 if (error) 383 break; 384 if (optval) 385 inp->inp_flags |= INP_HDRINCL; 386 else 387 inp->inp_flags &= ~INP_HDRINCL; 388 break; 389 390 case IP_FW_ADD: 391 case IP_FW_DEL: 392 case IP_FW_FLUSH: 393 case IP_FW_ZERO: 394 case IP_FW_RESETLOG: 395 if (IPFW_LOADED) 396 error = ip_fw_ctl_ptr(sopt); 397 else 398 error = ENOPROTOOPT; 399 break; 400 401 case IP_DUMMYNET_CONFIGURE: 402 case IP_DUMMYNET_DEL: 403 case IP_DUMMYNET_FLUSH: 404 if (DUMMYNET_LOADED) 405 error = ip_dn_ctl_ptr(sopt); 406 else 407 error = ENOPROTOOPT ; 408 break ; 409 410 case IP_RSVP_ON: 411 error = ip_rsvp_init(so); 412 break; 413 414 case IP_RSVP_OFF: 415 error = ip_rsvp_done(); 416 break; 417 418 case IP_RSVP_VIF_ON: 419 case IP_RSVP_VIF_OFF: 420 error = ip_rsvp_vif ? 421 ip_rsvp_vif(so, sopt) : EINVAL; 422 break; 423 424 case MRT_INIT: 425 case MRT_DONE: 426 case MRT_ADD_VIF: 427 case MRT_DEL_VIF: 428 case MRT_ADD_MFC: 429 case MRT_DEL_MFC: 430 case MRT_VERSION: 431 case MRT_ASSERT: 432 case MRT_API_SUPPORT: 433 case MRT_API_CONFIG: 434 case MRT_ADD_BW_UPCALL: 435 case MRT_DEL_BW_UPCALL: 436 error = ip_mrouter_set ? ip_mrouter_set(so, sopt) : 437 EOPNOTSUPP; 438 break; 439 440 default: 441 error = ip_ctloutput(so, sopt); 442 break; 443 } 444 break; 445 } 446 447 return (error); 448 } 449 450 /* 451 * This function exists solely to receive the PRC_IFDOWN messages which 452 * are sent by if_down(). It looks for an ifaddr whose ifa_addr is sa, 453 * and calls in_ifadown() to remove all routes corresponding to that address. 454 * It also receives the PRC_IFUP messages from if_up() and reinstalls the 455 * interface routes. 456 */ 457 void 458 rip_ctlinput(int cmd, struct sockaddr *sa, void *vip) 459 { 460 struct in_ifaddr *ia; 461 struct ifnet *ifp; 462 int err; 463 int flags; 464 465 switch (cmd) { 466 case PRC_IFDOWN: 467 TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) { 468 if (ia->ia_ifa.ifa_addr == sa 469 && (ia->ia_flags & IFA_ROUTE)) { 470 /* 471 * in_ifscrub kills the interface route. 472 */ 473 in_ifscrub(ia->ia_ifp, ia); 474 /* 475 * in_ifadown gets rid of all the rest of 476 * the routes. This is not quite the right 477 * thing to do, but at least if we are running 478 * a routing process they will come back. 479 */ 480 in_ifadown(&ia->ia_ifa, 0); 481 break; 482 } 483 } 484 break; 485 486 case PRC_IFUP: 487 TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) { 488 if (ia->ia_ifa.ifa_addr == sa) 489 break; 490 } 491 if (ia == 0 || (ia->ia_flags & IFA_ROUTE)) 492 return; 493 flags = RTF_UP; 494 ifp = ia->ia_ifa.ifa_ifp; 495 496 if ((ifp->if_flags & IFF_LOOPBACK) 497 || (ifp->if_flags & IFF_POINTOPOINT)) 498 flags |= RTF_HOST; 499 500 err = rtinit(&ia->ia_ifa, RTM_ADD, flags); 501 if (err == 0) 502 ia->ia_flags |= IFA_ROUTE; 503 break; 504 } 505 } 506 507 u_long rip_sendspace = RIPSNDQ; 508 u_long rip_recvspace = RIPRCVQ; 509 510 SYSCTL_INT(_net_inet_raw, OID_AUTO, maxdgram, CTLFLAG_RW, 511 &rip_sendspace, 0, "Maximum outgoing raw IP datagram size"); 512 SYSCTL_INT(_net_inet_raw, OID_AUTO, recvspace, CTLFLAG_RW, 513 &rip_recvspace, 0, "Maximum incoming raw IP datagram size"); 514 515 static int 516 rip_attach(struct socket *so, int proto, struct pru_attach_info *ai) 517 { 518 struct inpcb *inp; 519 int error, s; 520 521 inp = sotoinpcb(so); 522 if (inp) 523 panic("rip_attach"); 524 if ((error = suser_cred(ai->p_ucred, NULL_CRED_OKAY)) != 0) 525 return error; 526 527 error = soreserve(so, rip_sendspace, rip_recvspace, ai->sb_rlimit); 528 if (error) 529 return error; 530 s = splnet(); 531 error = in_pcballoc(so, &ripcbinfo); 532 splx(s); 533 if (error) 534 return error; 535 inp = (struct inpcb *)so->so_pcb; 536 inp->inp_vflag |= INP_IPV4; 537 inp->inp_ip_p = proto; 538 inp->inp_ip_ttl = ip_defttl; 539 return 0; 540 } 541 542 static int 543 rip_detach(struct socket *so) 544 { 545 struct inpcb *inp; 546 547 inp = sotoinpcb(so); 548 if (inp == 0) 549 panic("rip_detach"); 550 if (so == ip_mrouter && ip_mrouter_done) 551 ip_mrouter_done(); 552 if (ip_rsvp_force_done) 553 ip_rsvp_force_done(so); 554 if (so == ip_rsvpd) 555 ip_rsvp_done(); 556 in_pcbdetach(inp); 557 return 0; 558 } 559 560 static int 561 rip_abort(struct socket *so) 562 { 563 soisdisconnected(so); 564 if (so->so_state & SS_NOFDREF) 565 return rip_detach(so); 566 return 0; 567 } 568 569 static int 570 rip_disconnect(struct socket *so) 571 { 572 if ((so->so_state & SS_ISCONNECTED) == 0) 573 return ENOTCONN; 574 return rip_abort(so); 575 } 576 577 static int 578 rip_bind(struct socket *so, struct sockaddr *nam, struct thread *td) 579 { 580 struct inpcb *inp = sotoinpcb(so); 581 struct sockaddr_in *addr = (struct sockaddr_in *)nam; 582 583 if (nam->sa_len != sizeof(*addr)) 584 return EINVAL; 585 586 if (TAILQ_EMPTY(&ifnet) || ((addr->sin_family != AF_INET) && 587 (addr->sin_family != AF_IMPLINK)) || 588 (addr->sin_addr.s_addr != INADDR_ANY && 589 ifa_ifwithaddr((struct sockaddr *)addr) == 0)) 590 return EADDRNOTAVAIL; 591 inp->inp_laddr = addr->sin_addr; 592 return 0; 593 } 594 595 static int 596 rip_connect(struct socket *so, struct sockaddr *nam, struct thread *td) 597 { 598 struct inpcb *inp = sotoinpcb(so); 599 struct sockaddr_in *addr = (struct sockaddr_in *)nam; 600 601 if (nam->sa_len != sizeof(*addr)) 602 return EINVAL; 603 if (TAILQ_EMPTY(&ifnet)) 604 return EADDRNOTAVAIL; 605 if ((addr->sin_family != AF_INET) && 606 (addr->sin_family != AF_IMPLINK)) 607 return EAFNOSUPPORT; 608 inp->inp_faddr = addr->sin_addr; 609 soisconnected(so); 610 return 0; 611 } 612 613 static int 614 rip_shutdown(struct socket *so) 615 { 616 socantsendmore(so); 617 return 0; 618 } 619 620 static int 621 rip_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 622 struct mbuf *control, struct thread *td) 623 { 624 struct inpcb *inp = sotoinpcb(so); 625 u_long dst; 626 627 if (so->so_state & SS_ISCONNECTED) { 628 if (nam) { 629 m_freem(m); 630 return EISCONN; 631 } 632 dst = inp->inp_faddr.s_addr; 633 } else { 634 if (nam == NULL) { 635 m_freem(m); 636 return ENOTCONN; 637 } 638 dst = ((struct sockaddr_in *)nam)->sin_addr.s_addr; 639 } 640 return rip_output(m, so, dst); 641 } 642 643 static int 644 rip_pcblist(SYSCTL_HANDLER_ARGS) 645 { 646 int error, i, n; 647 struct inpcb *inp; 648 struct inpcb *marker; 649 inp_gen_t gencnt; 650 struct xinpgen xig; 651 struct xinpcb xi; 652 653 /* 654 * The process of preparing the TCB list is too time-consuming and 655 * resource-intensive to repeat twice on every request. 656 */ 657 if (req->oldptr == 0) { 658 n = ripcbinfo.ipi_count; 659 req->oldidx = 2 * (sizeof xig) 660 + (n + n/8) * sizeof(struct xinpcb); 661 return 0; 662 } 663 664 if (req->newptr != 0) 665 return EPERM; 666 667 /* 668 * OK, now we're committed to doing something. 669 */ 670 gencnt = ripcbinfo.ipi_gencnt; 671 n = ripcbinfo.ipi_count; 672 673 xig.xig_len = sizeof xig; 674 xig.xig_count = n; 675 xig.xig_gen = gencnt; 676 xig.xig_sogen = so_gencnt; 677 xig.xig_cpu = 0; 678 error = SYSCTL_OUT(req, &xig, sizeof xig); 679 if (error) 680 return error; 681 682 marker = malloc(sizeof(struct inpcb), M_TEMP, M_WAITOK|M_ZERO); 683 marker->inp_flags |= INP_PLACEMARKER; 684 LIST_INSERT_HEAD(&ripcbinfo.pcblisthead, marker, inp_list); 685 686 i = 0; 687 while ((inp = LIST_NEXT(marker, inp_list)) != NULL && i < n) { 688 LIST_REMOVE(marker, inp_list); 689 LIST_INSERT_AFTER(inp, marker, inp_list); 690 691 if (inp->inp_flags & INP_PLACEMARKER) 692 continue; 693 if (inp->inp_gencnt > gencnt) 694 continue; 695 696 xi.xi_len = sizeof xi; 697 bcopy(inp, &xi.xi_inp, sizeof *inp); 698 if (inp->inp_socket) 699 sotoxsocket(inp->inp_socket, &xi.xi_socket); 700 if ((error = SYSCTL_OUT(req, &xi, sizeof xi)) != 0) 701 break; 702 ++i; 703 } 704 LIST_REMOVE(marker, inp_list); 705 if (error == 0 && i < n) { 706 bzero(&xi, sizeof(xi)); 707 xi.xi_len = sizeof(xi); 708 while (i < n) { 709 error = SYSCTL_OUT(req, &xi, sizeof(xi)); 710 ++i; 711 } 712 } 713 if (error == 0) { 714 /* 715 * Give the user an updated idea of our state. 716 * If the generation differs from what we told 717 * her before, she knows that something happened 718 * while we were processing this request, and it 719 * might be necessary to retry. 720 */ 721 xig.xig_gen = ripcbinfo.ipi_gencnt; 722 xig.xig_sogen = so_gencnt; 723 xig.xig_count = ripcbinfo.ipi_count; 724 error = SYSCTL_OUT(req, &xig, sizeof xig); 725 } 726 free(marker, M_TEMP); 727 return error; 728 } 729 730 SYSCTL_PROC(_net_inet_raw, OID_AUTO/*XXX*/, pcblist, CTLFLAG_RD, 0, 0, 731 rip_pcblist, "S,xinpcb", "List of active raw IP sockets"); 732 733 struct pr_usrreqs rip_usrreqs = { 734 rip_abort, pru_accept_notsupp, rip_attach, rip_bind, rip_connect, 735 pru_connect2_notsupp, in_control, rip_detach, rip_disconnect, 736 pru_listen_notsupp, in_setpeeraddr, pru_rcvd_notsupp, 737 pru_rcvoob_notsupp, rip_send, pru_sense_null, rip_shutdown, 738 in_setsockaddr, sosend, soreceive, sopoll 739 }; 740