bsd/netinet6/raw_ip6.c

   1 /*
   2  * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  30  * All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. Neither the name of the project nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  *
  56  * $FreeBSD: src/sys/netinet6/raw_ip6.c,v 1.7.2.4 2001/07/29 19:32:40 ume Exp $
  57  */
  58
  59 /*
  60  * Copyright (c) 1982, 1986, 1988, 1993
  61  *      The Regents of the University of California.  All rights reserved.
  62  *
  63  * Redistribution and use in source and binary forms, with or without
  64  * modification, are permitted provided that the following conditions
  65  * are met:
  66  * 1. Redistributions of source code must retain the above copyright
  67  *    notice, this list of conditions and the following disclaimer.
  68  * 2. Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in the
  70  *    documentation and/or other materials provided with the distribution.
  71  * 3. All advertising materials mentioning features or use of this software
  72  *    must display the following acknowledgement:
  73  *      This product includes software developed by the University of
  74  *      California, Berkeley and its contributors.
  75  * 4. Neither the name of the University nor the names of its contributors
  76  *    may be used to endorse or promote products derived from this software
  77  *    without specific prior written permission.
  78  *
  79  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  80  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  81  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  82  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  83  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  84  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  85  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  86  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  87  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  88  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  89  * SUCH DAMAGE.
  90  *
  91  *      @(#)raw_ip.c    8.2 (Berkeley) 1/4/94
  92  */
  93 #include <sys/param.h>
  94 #include <sys/malloc.h>
  95 #include <sys/proc.h>
  96 #include <sys/mcache.h>
  97 #include <sys/mbuf.h>
  98 #include <sys/socket.h>
  99 #include <sys/protosw.h>
 100 #include <sys/socketvar.h>
 101 #include <sys/errno.h>
 102 #include <sys/systm.h>
 103
 104 #include <net/if.h>
 105 #include <net/net_api_stats.h>
 106 #include <net/route.h>
 107 #include <net/if_types.h>
 108 #include <net/content_filter.h>
 109
 110 #include <netinet/in.h>
 111 #include <netinet/in_var.h>
 112 #include <netinet/in_systm.h>
 113 #include <netinet/in_tclass.h>
 114 #include <netinet/ip6.h>
 115 #include <netinet6/ip6_var.h>
 116 #include <netinet/icmp6.h>
 117 #include <netinet/in_pcb.h>
 118 #include <netinet6/in6_pcb.h>
 119 #include <netinet6/nd6.h>
 120 #include <netinet6/ip6protosw.h>
 121 #include <netinet6/scope6_var.h>
 122 #include <netinet6/raw_ip6.h>
 123
 124 #if IPSEC
 125 #include <netinet6/ipsec.h>
 126 #include <netinet6/ipsec6.h>
 127 #endif /*IPSEC*/
 128
 129 #if NECP
 130 #include <net/necp.h>
 131 #endif
 132
 133 /*
 134  * Raw interface to IP6 protocol.
 135  */
 136
 137 extern struct   inpcbhead ripcb;
 138 extern struct   inpcbinfo ripcbinfo;
 139 extern u_int32_t        rip_sendspace;
 140 extern u_int32_t        rip_recvspace;
 141
 142 struct rip6stat rip6stat;
 143
 144 /*
 145  * Setup generic address and protocol structures
 146  * for raw_input routine, then pass them along with
 147  * mbuf chain.
 148  */
 149 int
 150 rip6_input(
 151         struct  mbuf **mp,
 152         int     *offp,
 153         int     proto)
 154 {
 155         struct mbuf *m = *mp;
 156         struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
 157         struct inpcb *in6p;
 158         struct inpcb *last = 0;
 159         struct mbuf *opts = NULL;
 160         struct sockaddr_in6 rip6src;
 161         int ret;
 162         struct ifnet *ifp = m->m_pkthdr.rcvif;
 163
 164         /* Expect 32-bit aligned data pointer on strict-align platforms */
 165         MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m);
 166
 167         rip6stat.rip6s_ipackets++;
 168
 169         init_sin6(&rip6src, m); /* general init */
 170
 171         lck_rw_lock_shared(ripcbinfo.ipi_lock);
 172         LIST_FOREACH(in6p, &ripcb, inp_list) {
 173                 if ((in6p->in6p_vflag & INP_IPV6) == 0) {
 174                         continue;
 175                 }
 176                 if (in6p->in6p_ip6_nxt &&
 177                     in6p->in6p_ip6_nxt != proto) {
 178                         continue;
 179                 }
 180                 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
 181                     !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst)) {
 182                         continue;
 183                 }
 184                 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
 185                     !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src)) {
 186                         continue;
 187                 }
 188
 189                 if (inp_restricted_recv(in6p, ifp)) {
 190                         continue;
 191                 }
 192
 193                 if (proto == IPPROTO_ICMPV6 || in6p->in6p_cksum != -1) {
 194                         rip6stat.rip6s_isum++;
 195                         if (in6_cksum(m, ip6->ip6_nxt, *offp,
 196                             m->m_pkthdr.len - *offp)) {
 197                                 rip6stat.rip6s_badsum++;
 198                                 continue;
 199                         }
 200                 }
 201                 if (last) {
 202                         struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
 203
 204 #if NECP
 205                         if (n && !necp_socket_is_allowed_to_send_recv_v6(in6p, 0, 0,
 206                             &ip6->ip6_dst, &ip6->ip6_src, ifp, NULL, NULL, NULL)) {
 207                                 m_freem(n);
 208                                 /* do not inject data into pcb */
 209                         } else
 210 #endif /* NECP */
 211                         if (n) {
 212                                 if ((last->in6p_flags & INP_CONTROLOPTS) != 0 ||
 213                                     (last->in6p_socket->so_options & SO_TIMESTAMP) != 0 ||
 214                                     (last->in6p_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0 ||
 215                                     (last->in6p_socket->so_options & SO_TIMESTAMP_CONTINUOUS) != 0) {
 216                                         ret = ip6_savecontrol(last, n, &opts);
 217                                         if (ret != 0) {
 218                                                 m_freem(n);
 219                                                 m_freem(opts);
 220                                                 last = in6p;
 221                                                 continue;
 222                                         }
 223                                 }
 224                                 /* strip intermediate headers */
 225                                 m_adj(n, *offp);
 226                                 so_recv_data_stat(last->in6p_socket, m, 0);
 227                                 if (sbappendaddr(&last->in6p_socket->so_rcv,
 228                                     (struct sockaddr *)&rip6src,
 229                                     n, opts, NULL) == 0) {
 230                                         rip6stat.rip6s_fullsock++;
 231                                 } else {
 232                                         sorwakeup(last->in6p_socket);
 233                                 }
 234                                 opts = NULL;
 235                         }
 236                 }
 237                 last = in6p;
 238         }
 239
 240 #if NECP
 241         if (last && !necp_socket_is_allowed_to_send_recv_v6(in6p, 0, 0,
 242             &ip6->ip6_dst, &ip6->ip6_src, ifp, NULL, NULL, NULL)) {
 243                 m_freem(m);
 244                 ip6stat.ip6s_delivered--;
 245                 /* do not inject data into pcb */
 246         } else
 247 #endif /* NECP */
 248         if (last) {
 249                 if ((last->in6p_flags & INP_CONTROLOPTS) != 0 ||
 250                     (last->in6p_socket->so_options & SO_TIMESTAMP) != 0 ||
 251                     (last->in6p_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0 ||
 252                     (last->in6p_socket->so_options & SO_TIMESTAMP_CONTINUOUS) != 0) {
 253                         ret = ip6_savecontrol(last, m, &opts);
 254                         if (ret != 0) {
 255                                 m_freem(m);
 256                                 m_freem(opts);
 257                                 ip6stat.ip6s_delivered--;
 258                                 goto unlock;
 259                         }
 260                 }
 261                 /* strip intermediate headers */
 262                 m_adj(m, *offp);
 263                 so_recv_data_stat(last->in6p_socket, m, 0);
 264                 if (sbappendaddr(&last->in6p_socket->so_rcv,
 265                     (struct sockaddr *)&rip6src, m, opts, NULL) == 0) {
 266                         rip6stat.rip6s_fullsock++;
 267                 } else {
 268                         sorwakeup(last->in6p_socket);
 269                 }
 270         } else {
 271                 rip6stat.rip6s_nosock++;
 272                 if (m->m_flags & M_MCAST) {
 273                         rip6stat.rip6s_nosockmcast++;
 274                 }
 275                 if (proto == IPPROTO_NONE) {
 276                         m_freem(m);
 277                 } else {
 278                         char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
 279                         icmp6_error(m, ICMP6_PARAM_PROB,
 280                             ICMP6_PARAMPROB_NEXTHEADER,
 281                             prvnxtp - mtod(m, char *));
 282                 }
 283                 ip6stat.ip6s_delivered--;
 284         }
 285
 286 unlock:
 287         lck_rw_done(ripcbinfo.ipi_lock);
 288
 289         return IPPROTO_DONE;
 290 }
 291
 292 void
 293 rip6_ctlinput(
 294         int cmd,
 295         struct sockaddr *sa,
 296         void *d,
 297         __unused struct ifnet *ifp)
 298 {
 299         struct ip6_hdr *ip6;
 300         struct mbuf *m;
 301         void *cmdarg = NULL;
 302         int off = 0;
 303         struct ip6ctlparam *ip6cp = NULL;
 304         const struct sockaddr_in6 *sa6_src = NULL;
 305         void (*notify)(struct inpcb *, int) = in6_rtchange;
 306
 307         if (sa->sa_family != AF_INET6 ||
 308             sa->sa_len != sizeof(struct sockaddr_in6)) {
 309                 return;
 310         }
 311
 312         if ((unsigned)cmd >= PRC_NCMDS) {
 313                 return;
 314         }
 315         if (PRC_IS_REDIRECT(cmd)) {
 316                 notify = in6_rtchange;
 317                 d = NULL;
 318         } else if (cmd == PRC_HOSTDEAD) {
 319                 d = NULL;
 320         } else if (inet6ctlerrmap[cmd] == 0) {
 321                 return;
 322         }
 323
 324         /* if the parameter is from icmp6, decode it. */
 325         if (d != NULL) {
 326                 ip6cp = (struct ip6ctlparam *)d;
 327                 m = ip6cp->ip6c_m;
 328                 ip6 = ip6cp->ip6c_ip6;
 329                 off = ip6cp->ip6c_off;
 330                 cmdarg = ip6cp->ip6c_cmdarg;
 331                 sa6_src = ip6cp->ip6c_src;
 332         } else {
 333                 m = NULL;
 334                 ip6 = NULL;
 335                 sa6_src = &sa6_any;
 336         }
 337
 338         (void) in6_pcbnotify(&ripcbinfo, sa, 0, (const struct sockaddr *)sa6_src,
 339             0, cmd, cmdarg, notify);
 340 }
 341
 342 /*
 343  * Generate IPv6 header and pass packet to ip6_output.
 344  * Tack on options user may have setup with control call.
 345  */
 346 int
 347 rip6_output(
 348         struct mbuf *m,
 349         struct socket *so,
 350         struct sockaddr_in6 *dstsock,
 351         struct mbuf *control,
 352         int israw)
 353 {
 354         struct in6_addr *dst;
 355         struct ip6_hdr *ip6;
 356         struct inpcb *in6p;
 357         u_int   plen = m->m_pkthdr.len;
 358         int error = 0;
 359         struct ip6_pktopts opt, *optp = NULL;
 360         struct ip6_moptions *im6o = NULL;
 361         struct ifnet *oifp = NULL;
 362         int type = 0, code = 0;         /* for ICMPv6 output statistics only */
 363         int sotc = SO_TC_UNSPEC;
 364         int netsvctype = _NET_SERVICE_TYPE_UNSPEC;
 365         struct ip6_out_args ip6oa;
 366         int flags = IPV6_OUTARGS;
 367         struct sockaddr_in6 tmp;
 368 #if CONTENT_FILTER
 369         struct m_tag *cfil_tag = NULL;
 370         bool cfil_faddr_use = false;
 371         uint32_t cfil_so_state_change_cnt = 0;
 372         short cfil_so_options = 0;
 373         struct sockaddr *cfil_faddr = NULL;
 374         struct sockaddr_in6 *cfil_sin6 = NULL;
 375 #endif
 376
 377         in6p = sotoin6pcb(so);
 378         if (in6p == NULL) {
 379                 error = EINVAL;
 380                 goto bad;
 381         }
 382
 383 #if CONTENT_FILTER
 384         /*
 385          * If socket is subject to Content Filter and no addr is passed in,
 386          * retrieve CFIL saved state from mbuf and use it if necessary.
 387          */
 388         if (so->so_cfil_db && !dstsock) {
 389                 cfil_tag = cfil_dgram_get_socket_state(m, &cfil_so_state_change_cnt, &cfil_so_options, &cfil_faddr, NULL);
 390                 if (cfil_tag) {
 391                         cfil_sin6 = SIN6(cfil_faddr);
 392                         if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
 393                                 /*
 394                                  * Socket is unconnected, simply use the saved faddr as 'addr' to go through
 395                                  * the connect/disconnect logic.
 396                                  */
 397                                 dstsock = cfil_sin6;
 398                         } else if ((so->so_state_change_cnt != cfil_so_state_change_cnt) &&
 399                             (in6p->in6p_fport != cfil_sin6->sin6_port ||
 400                             !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &cfil_sin6->sin6_addr))) {
 401                                 /*
 402                                  * Socket is connected but socket state and dest addr/port changed.
 403                                  * We need to use the saved faddr and socket options.
 404                                  */
 405                                 cfil_faddr_use = true;
 406                         }
 407                 }
 408         }
 409 #endif
 410
 411         /* always copy sockaddr to avoid overwrites */
 412         if (so->so_state & SS_ISCONNECTED) {
 413                 if (dstsock != NULL) {
 414                         error = EISCONN;
 415                         goto bad;
 416                 }
 417                 /* XXX */
 418                 bzero(&tmp, sizeof(tmp));
 419                 tmp.sin6_family = AF_INET6;
 420                 tmp.sin6_len = sizeof(struct sockaddr_in6);
 421                 bcopy(
 422 #if CONTENT_FILTER
 423                         cfil_faddr_use ? &cfil_sin6->sin6_addr :
 424 #endif
 425                         &in6p->in6p_faddr, &tmp.sin6_addr, sizeof(struct in6_addr));
 426                 dstsock = &tmp;
 427         } else {
 428                 if (dstsock == NULL) {
 429                         error = ENOTCONN;
 430                         goto bad;
 431                 }
 432                 tmp = *dstsock;
 433                 dstsock = &tmp;
 434         }
 435
 436 #if ENABLE_DEFAULT_SCOPE
 437         if (dstsock->sin6_scope_id == 0) { /* not change if specified  */
 438                 dstsock->sin6_scope_id = scope6_addr2default(&dstsock->sin6_addr);
 439         }
 440 #endif
 441
 442         bzero(&ip6oa, sizeof(ip6oa));
 443         ip6oa.ip6oa_boundif = IFSCOPE_NONE;
 444         ip6oa.ip6oa_flags = IP6OAF_SELECT_SRCIF;
 445
 446         if (in6p == NULL
 447 #if NECP
 448             || (necp_socket_should_use_flow_divert(in6p))
 449 #endif /* NECP */
 450             ) {
 451                 if (in6p == NULL) {
 452                         error = EINVAL;
 453                 } else {
 454                         error = EPROTOTYPE;
 455                 }
 456                 goto bad;
 457         }
 458         if (dstsock != NULL && IN6_IS_ADDR_V4MAPPED(&dstsock->sin6_addr)) {
 459                 error = EINVAL;
 460                 goto bad;
 461         }
 462
 463         if (in6p->inp_flags & INP_BOUND_IF) {
 464                 ip6oa.ip6oa_boundif = in6p->inp_boundifp->if_index;
 465                 ip6oa.ip6oa_flags |= IP6OAF_BOUND_IF;
 466         }
 467         if (INP_NO_CELLULAR(in6p)) {
 468                 ip6oa.ip6oa_flags |= IP6OAF_NO_CELLULAR;
 469         }
 470         if (INP_NO_EXPENSIVE(in6p)) {
 471                 ip6oa.ip6oa_flags |= IP6OAF_NO_EXPENSIVE;
 472         }
 473         if (INP_NO_CONSTRAINED(in6p)) {
 474                 ip6oa.ip6oa_flags |= IP6OAF_NO_CONSTRAINED;
 475         }
 476         if (INP_AWDL_UNRESTRICTED(in6p)) {
 477                 ip6oa.ip6oa_flags |= IP6OAF_AWDL_UNRESTRICTED;
 478         }
 479         if (INP_INTCOPROC_ALLOWED(in6p)) {
 480                 ip6oa.ip6oa_flags |= IP6OAF_INTCOPROC_ALLOWED;
 481         }
 482
 483         dst = &dstsock->sin6_addr;
 484         if (control) {
 485                 sotc = so_tc_from_control(control, &netsvctype);
 486
 487                 if ((error = ip6_setpktopts(control, &opt, NULL,
 488                     SOCK_PROTO(so))) != 0) {
 489                         goto bad;
 490                 }
 491                 optp = &opt;
 492         } else {
 493                 optp = in6p->in6p_outputopts;
 494         }
 495         if (sotc == SO_TC_UNSPEC) {
 496                 sotc = so->so_traffic_class;
 497                 netsvctype = so->so_netsvctype;
 498         }
 499         ip6oa.ip6oa_sotc = sotc;
 500         ip6oa.ip6oa_netsvctype = netsvctype;
 501
 502         /*
 503          * For an ICMPv6 packet, we should know its type and code
 504          * to update statistics.
 505          */
 506         if (SOCK_PROTO(so) == IPPROTO_ICMPV6) {
 507                 struct icmp6_hdr *icmp6;
 508                 if (m->m_len < sizeof(struct icmp6_hdr) &&
 509                     (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
 510                         error = ENOBUFS;
 511                         goto bad;
 512                 }
 513                 icmp6 = mtod(m, struct icmp6_hdr *);
 514                 type = icmp6->icmp6_type;
 515                 code = icmp6->icmp6_code;
 516         }
 517
 518         if (in6p->inp_flowhash == 0) {
 519                 in6p->inp_flowhash = inp_calc_flowhash(in6p);
 520         }
 521         /* update flowinfo - RFC 6437 */
 522         if (in6p->inp_flow == 0 && in6p->in6p_flags & IN6P_AUTOFLOWLABEL) {
 523                 in6p->inp_flow &= ~IPV6_FLOWLABEL_MASK;
 524                 in6p->inp_flow |=
 525                     (htonl(in6p->inp_flowhash) & IPV6_FLOWLABEL_MASK);
 526         }
 527
 528         M_PREPEND(m, sizeof(*ip6), M_WAIT, 1);
 529         if (m == NULL) {
 530                 error = ENOBUFS;
 531                 goto bad;
 532         }
 533         ip6 = mtod(m, struct ip6_hdr *);
 534
 535         /*
 536          * Next header might not be ICMP6 but use its pseudo header anyway.
 537          */
 538         ip6->ip6_dst = *dst;
 539
 540         im6o = in6p->in6p_moptions;
 541
 542         /*
 543          * If the scope of the destination is link-local, embed the interface
 544          * index in the address.
 545          *
 546          * XXX advanced-api value overrides sin6_scope_id
 547          */
 548         if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
 549                 struct in6_pktinfo *pi;
 550                 struct ifnet *im6o_multicast_ifp = NULL;
 551
 552                 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) && im6o != NULL) {
 553                         IM6O_LOCK(im6o);
 554                         im6o_multicast_ifp = im6o->im6o_multicast_ifp;
 555                         IM6O_UNLOCK(im6o);
 556                 }
 557                 /*
 558                  * XXX Boundary check is assumed to be already done in
 559                  * ip6_setpktoptions().
 560                  */
 561                 ifnet_head_lock_shared();
 562                 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
 563                         ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
 564                         oifp = ifindex2ifnet[pi->ipi6_ifindex];
 565                         if (oifp != NULL) {
 566                                 ifnet_reference(oifp);
 567                         }
 568                 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
 569                     im6o != NULL && im6o_multicast_ifp != NULL) {
 570                         oifp = im6o_multicast_ifp;
 571                         ifnet_reference(oifp);
 572                         ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
 573                 } else if (dstsock->sin6_scope_id) {
 574                         /*
 575                          * boundary check
 576                          *
 577                          * Sinced stsock->sin6_scope_id is unsigned, we don't
 578                          * need to check if it's < 0
 579                          */
 580                         if (if_index < dstsock->sin6_scope_id) {
 581                                 error = ENXIO;  /* XXX EINVAL? */
 582                                 ifnet_head_done();
 583                                 goto bad;
 584                         }
 585                         ip6->ip6_dst.s6_addr16[1]
 586                                 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/
 587                 }
 588                 ifnet_head_done();
 589         }
 590
 591         /*
 592          * Source address selection.
 593          */
 594         {
 595                 struct in6_addr *in6a;
 596                 struct in6_addr storage;
 597                 u_short index = 0;
 598
 599                 if (israw != 0 && optp && optp->ip6po_pktinfo && !IN6_IS_ADDR_UNSPECIFIED(&optp->ip6po_pktinfo->ipi6_addr)) {
 600                         in6a = &optp->ip6po_pktinfo->ipi6_addr;
 601                         flags |= IPV6_FLAG_NOSRCIFSEL;
 602                 } else if ((in6a = in6_selectsrc(dstsock, optp, in6p,
 603                     &in6p->in6p_route, NULL, &storage, ip6oa.ip6oa_boundif,
 604                     &error)) == 0) {
 605                         if (error == 0) {
 606                                 error = EADDRNOTAVAIL;
 607                         }
 608                         goto bad;
 609                 } else {
 610                         ip6oa.ip6oa_flags |= IP6OAF_BOUND_SRCADDR;
 611                 }
 612                 ip6->ip6_src = *in6a;
 613                 if (in6p->in6p_route.ro_rt != NULL) {
 614                         RT_LOCK(in6p->in6p_route.ro_rt);
 615                         if (in6p->in6p_route.ro_rt->rt_ifp != NULL) {
 616                                 index = in6p->in6p_route.ro_rt->rt_ifp->if_index;
 617                         }
 618                         RT_UNLOCK(in6p->in6p_route.ro_rt);
 619                         if (oifp != NULL) {
 620                                 ifnet_release(oifp);
 621                         }
 622                         ifnet_head_lock_shared();
 623                         if (index == 0 || if_index < index) {
 624                                 panic("bad if_index on interface from route");
 625                         }
 626                         oifp = ifindex2ifnet[index];
 627                         if (oifp != NULL) {
 628                                 ifnet_reference(oifp);
 629                         }
 630                         ifnet_head_done();
 631                 }
 632         }
 633         ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
 634             (in6p->inp_flow & IPV6_FLOWINFO_MASK);
 635         ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
 636             (IPV6_VERSION & IPV6_VERSION_MASK);
 637         /* ip6_plen will be filled in ip6_output, so not fill it here. */
 638         ip6->ip6_nxt = in6p->in6p_ip6_nxt;
 639         ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
 640
 641         if (SOCK_PROTO(so) == IPPROTO_ICMPV6 || in6p->in6p_cksum != -1) {
 642                 struct mbuf *n;
 643                 int off;
 644                 u_int16_t *p;
 645
 646                 /* compute checksum */
 647                 if (SOCK_PROTO(so) == IPPROTO_ICMPV6) {
 648                         off = offsetof(struct icmp6_hdr, icmp6_cksum);
 649                 } else {
 650                         off = in6p->in6p_cksum;
 651                 }
 652                 if (plen < (unsigned int)(off + 1)) {
 653                         error = EINVAL;
 654                         goto bad;
 655                 }
 656                 off += sizeof(struct ip6_hdr);
 657
 658                 n = m;
 659                 while (n && n->m_len <= off) {
 660                         off -= n->m_len;
 661                         n = n->m_next;
 662                 }
 663                 if (!n) {
 664                         goto bad;
 665                 }
 666                 p = (u_int16_t *)(void *)(mtod(n, caddr_t) + off);
 667                 *p = 0;
 668                 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
 669         }
 670
 671 #if NECP
 672         {
 673                 necp_kernel_policy_id policy_id;
 674                 necp_kernel_policy_id skip_policy_id;
 675                 u_int32_t route_rule_id;
 676
 677                 /*
 678                  * We need a route to perform NECP route rule checks
 679                  */
 680                 if ((net_qos_policy_restricted != 0 &&
 681                     ROUTE_UNUSABLE(&in6p->in6p_route))
 682 #if CONTENT_FILTER
 683                     || cfil_faddr_use
 684 #endif
 685                     ) {
 686                         struct sockaddr_in6 to;
 687                         struct sockaddr_in6 from;
 688
 689                         ROUTE_RELEASE(&in6p->in6p_route);
 690
 691                         bzero(&from, sizeof(struct sockaddr_in6));
 692                         from.sin6_family = AF_INET6;
 693                         from.sin6_len = sizeof(struct sockaddr_in6);
 694                         from.sin6_addr = ip6->ip6_src;
 695
 696                         bzero(&to, sizeof(struct sockaddr_in6));
 697                         to.sin6_family = AF_INET6;
 698                         to.sin6_len = sizeof(struct sockaddr_in6);
 699                         to.sin6_addr = ip6->ip6_dst;
 700
 701                         in6p->in6p_route.ro_dst.sin6_family = AF_INET6;
 702                         in6p->in6p_route.ro_dst.sin6_len = sizeof(struct sockaddr_in6);
 703                         ((struct sockaddr_in6 *)(void *)&in6p->in6p_route.ro_dst)->sin6_addr =
 704                             ip6->ip6_dst;
 705
 706                         rtalloc_scoped((struct route *)&in6p->in6p_route, ip6oa.ip6oa_boundif);
 707
 708                         inp_update_necp_policy(in6p, (struct sockaddr *)&from,
 709                             (struct sockaddr *)&to, ip6oa.ip6oa_boundif);
 710                         in6p->inp_policyresult.results.qos_marking_gencount = 0;
 711                 }
 712
 713                 if (!necp_socket_is_allowed_to_send_recv_v6(in6p, 0, 0,
 714                     &ip6->ip6_src, &ip6->ip6_dst, NULL, &policy_id, &route_rule_id, &skip_policy_id)) {
 715                         error = EHOSTUNREACH;
 716                         goto bad;
 717                 }
 718
 719                 necp_mark_packet_from_socket(m, in6p, policy_id, route_rule_id, skip_policy_id);
 720
 721                 if (net_qos_policy_restricted != 0) {
 722                         necp_socket_update_qos_marking(in6p, in6p->in6p_route.ro_rt,
 723                             NULL, route_rule_id);
 724                 }
 725         }
 726 #endif /* NECP */
 727         if ((so->so_flags1 & SOF1_QOSMARKING_ALLOWED)) {
 728                 ip6oa.ip6oa_flags |= IP6OAF_QOSMARKING_ALLOWED;
 729         }
 730
 731 #if IPSEC
 732         if (in6p->in6p_sp != NULL && ipsec_setsocket(m, so) != 0) {
 733                 error = ENOBUFS;
 734                 goto bad;
 735         }
 736 #endif /*IPSEC*/
 737
 738         if (ROUTE_UNUSABLE(&in6p->in6p_route)) {
 739                 ROUTE_RELEASE(&in6p->in6p_route);
 740         }
 741
 742         if (oifp != NULL) {
 743                 ifnet_release(oifp);
 744                 oifp = NULL;
 745         }
 746
 747         set_packet_service_class(m, so, sotc, PKT_SCF_IPV6);
 748         m->m_pkthdr.pkt_flowsrc = FLOWSRC_INPCB;
 749         m->m_pkthdr.pkt_flowid = in6p->inp_flowhash;
 750         m->m_pkthdr.pkt_flags |= (PKTF_FLOW_ID | PKTF_FLOW_LOCALSRC |
 751             PKTF_FLOW_RAWSOCK);
 752         m->m_pkthdr.pkt_proto = in6p->in6p_ip6_nxt;
 753         m->m_pkthdr.tx_rawip_pid = so->last_pid;
 754         if (so->so_flags & SOF_DELEGATED) {
 755                 m->m_pkthdr.tx_rawip_e_pid = so->e_pid;
 756         } else {
 757                 m->m_pkthdr.tx_rawip_e_pid = 0;
 758         }
 759
 760         if (im6o != NULL) {
 761                 IM6O_ADDREF(im6o);
 762         }
 763
 764         error = ip6_output(m, optp, &in6p->in6p_route, flags, im6o,
 765             &oifp, &ip6oa);
 766
 767         if (im6o != NULL) {
 768                 IM6O_REMREF(im6o);
 769         }
 770
 771         if (in6p->in6p_route.ro_rt != NULL) {
 772                 struct rtentry *rt = in6p->in6p_route.ro_rt;
 773                 struct ifnet *outif;
 774
 775                 if ((rt->rt_flags & RTF_MULTICAST) ||
 776                     in6p->in6p_socket == NULL ||
 777 #if CONTENT_FILTER
 778                     /* Discard temporary route for cfil case */
 779                     cfil_faddr_use ||
 780 #endif
 781                     !(in6p->in6p_socket->so_state & SS_ISCONNECTED)) {
 782                         rt = NULL;      /* unusable */
 783                 }
 784                 /*
 785                  * Always discard the cached route for unconnected
 786                  * socket or if it is a multicast route.
 787                  */
 788                 if (rt == NULL) {
 789                         ROUTE_RELEASE(&in6p->in6p_route);
 790                 }
 791
 792                 /*
 793                  * If this is a connected socket and the destination
 794                  * route is not multicast, update outif with that of
 795                  * the route interface index used by IP.
 796                  */
 797                 if (rt != NULL) {
 798                         /*
 799                          * When an NECP IP tunnel policy forces the outbound interface,
 800                          * ip6_output_list() informs the transport layer what is the actual
 801                          * outgoing interface
 802                          */
 803                         if (ip6oa.ip6oa_flags & IP6OAF_BOUND_IF) {
 804                                 outif = ifindex2ifnet[ip6oa.ip6oa_boundif];
 805                         } else {
 806                                 outif = rt->rt_ifp;
 807                         }
 808                         if (outif != NULL) {
 809                                 in6p->in6p_last_outifp = outif;
 810                         }
 811                 }
 812         } else {
 813                 ROUTE_RELEASE(&in6p->in6p_route);
 814         }
 815
 816         /*
 817          * If output interface was cellular/expensive, and this socket is
 818          * denied access to it, generate an event.
 819          */
 820         if (error != 0 && (ip6oa.ip6oa_retflags & IP6OARF_IFDENIED) &&
 821             (INP_NO_CELLULAR(in6p) || INP_NO_EXPENSIVE(in6p) || INP_NO_CONSTRAINED(in6p))) {
 822                 soevent(in6p->inp_socket, (SO_FILT_HINT_LOCKED |
 823                     SO_FILT_HINT_IFDENIED));
 824         }
 825
 826         if (SOCK_PROTO(so) == IPPROTO_ICMPV6) {
 827                 if (oifp) {
 828                         icmp6_ifoutstat_inc(oifp, type, code);
 829                 }
 830                 icmp6stat.icp6s_outhist[type]++;
 831         } else {
 832                 rip6stat.rip6s_opackets++;
 833         }
 834
 835         goto freectl;
 836
 837 bad:
 838         if (m != NULL) {
 839                 m_freem(m);
 840         }
 841
 842 freectl:
 843         if (optp == &opt && optp->ip6po_rthdr) {
 844                 ROUTE_RELEASE(&optp->ip6po_route);
 845         }
 846
 847         if (control != NULL) {
 848                 if (optp == &opt) {
 849                         ip6_clearpktopts(optp, -1);
 850                 }
 851                 m_freem(control);
 852         }
 853         if (oifp != NULL) {
 854                 ifnet_release(oifp);
 855         }
 856 #if CONTENT_FILTER
 857         if (cfil_tag) {
 858                 m_tag_free(cfil_tag);
 859         }
 860 #endif
 861
 862         return error;
 863 }
 864
 865 /*
 866  * Raw IPv6 socket option processing.
 867  */
 868 int
 869 rip6_ctloutput(
 870         struct socket *so,
 871         struct sockopt *sopt)
 872 {
 873         int error, optval;
 874
 875         /* Allow <SOL_SOCKET,SO_FLUSH> at this level */
 876         if (sopt->sopt_level == IPPROTO_ICMPV6) {
 877                 /*
 878                  * XXX: is it better to call icmp6_ctloutput() directly
 879                  * from protosw?
 880                  */
 881                 return icmp6_ctloutput(so, sopt);
 882         } else if (sopt->sopt_level != IPPROTO_IPV6 &&
 883             !(sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_FLUSH)) {
 884                 return EINVAL;
 885         }
 886
 887         error = 0;
 888
 889         switch (sopt->sopt_dir) {
 890         case SOPT_GET:
 891                 switch (sopt->sopt_name) {
 892                 case IPV6_CHECKSUM:
 893                         error = ip6_raw_ctloutput(so, sopt);
 894                         break;
 895                 default:
 896                         error = ip6_ctloutput(so, sopt);
 897                         break;
 898                 }
 899                 break;
 900
 901         case SOPT_SET:
 902                 switch (sopt->sopt_name) {
 903                 case IPV6_CHECKSUM:
 904                         error = ip6_raw_ctloutput(so, sopt);
 905                         break;
 906
 907                 case SO_FLUSH:
 908                         if ((error = sooptcopyin(sopt, &optval, sizeof(optval),
 909                             sizeof(optval))) != 0) {
 910                                 break;
 911                         }
 912
 913                         error = inp_flush(sotoinpcb(so), optval);
 914                         break;
 915
 916                 default:
 917                         error = ip6_ctloutput(so, sopt);
 918                         break;
 919                 }
 920                 break;
 921         }
 922
 923         return error;
 924 }
 925
 926 static int
 927 rip6_attach(struct socket *so, int proto, struct proc *p)
 928 {
 929         struct inpcb *inp;
 930         int error;
 931
 932         inp = sotoinpcb(so);
 933         if (inp) {
 934                 panic("rip6_attach");
 935         }
 936         if ((error = proc_suser(p)) != 0) {
 937                 return error;
 938         }
 939
 940         error = soreserve(so, rip_sendspace, rip_recvspace);
 941         if (error) {
 942                 return error;
 943         }
 944         error = in_pcballoc(so, &ripcbinfo, p);
 945         if (error) {
 946                 return error;
 947         }
 948         inp = (struct inpcb *)so->so_pcb;
 949         inp->inp_vflag |= INP_IPV6;
 950         inp->in6p_ip6_nxt = (char)proto;
 951         inp->in6p_hops = -1;    /* use kernel default */
 952         inp->in6p_cksum = -1;
 953         MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
 954             sizeof(struct icmp6_filter), M_PCB, M_WAITOK);
 955         if (inp->in6p_icmp6filt == NULL) {
 956                 return ENOMEM;
 957         }
 958         ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
 959         return 0;
 960 }
 961
 962 static int
 963 rip6_detach(struct socket *so)
 964 {
 965         struct inpcb *inp;
 966
 967         inp = sotoinpcb(so);
 968         if (inp == 0) {
 969                 panic("rip6_detach");
 970         }
 971         /* xxx: RSVP */
 972         if (inp->in6p_icmp6filt) {
 973                 FREE(inp->in6p_icmp6filt, M_PCB);
 974                 inp->in6p_icmp6filt = NULL;
 975         }
 976         in6_pcbdetach(inp);
 977         return 0;
 978 }
 979
 980 static int
 981 rip6_abort(struct socket *so)
 982 {
 983         soisdisconnected(so);
 984         return rip6_detach(so);
 985 }
 986
 987 static int
 988 rip6_disconnect(struct socket *so)
 989 {
 990         struct inpcb *inp = sotoinpcb(so);
 991
 992         if ((so->so_state & SS_ISCONNECTED) == 0) {
 993                 return ENOTCONN;
 994         }
 995         inp->in6p_faddr = in6addr_any;
 996         return rip6_abort(so);
 997 }
 998
 999 static int
1000 rip6_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
1001 {
1002 #pragma unused(p)
1003         struct inpcb *inp = sotoinpcb(so);
1004         struct sockaddr_in6 sin6;
1005         struct ifaddr *ifa = NULL;
1006         struct ifnet *outif = NULL;
1007         int error;
1008
1009         if (inp == NULL
1010 #if NECP
1011             || (necp_socket_should_use_flow_divert(inp))
1012 #endif /* NECP */
1013             ) {
1014                 return inp == NULL ? EINVAL : EPROTOTYPE;
1015         }
1016
1017         if (nam->sa_len != sizeof(struct sockaddr_in6)) {
1018                 return EINVAL;
1019         }
1020
1021         if (TAILQ_EMPTY(&ifnet_head) || SIN6(nam)->sin6_family != AF_INET6) {
1022                 return EADDRNOTAVAIL;
1023         }
1024
1025         bzero(&sin6, sizeof(sin6));
1026         *(&sin6) = *SIN6(nam);
1027
1028         if ((error = sa6_embedscope(&sin6, ip6_use_defzone)) != 0) {
1029                 return error;
1030         }
1031
1032         /* Sanitize local copy for address searches */
1033         sin6.sin6_flowinfo = 0;
1034         sin6.sin6_scope_id = 0;
1035         sin6.sin6_port = 0;
1036
1037         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr) &&
1038             (ifa = ifa_ifwithaddr(SA(&sin6))) == 0) {
1039                 return EADDRNOTAVAIL;
1040         }
1041         if (ifa != NULL) {
1042                 IFA_LOCK(ifa);
1043                 if (((struct in6_ifaddr *)ifa)->ia6_flags &
1044                     (IN6_IFF_ANYCAST | IN6_IFF_NOTREADY | IN6_IFF_CLAT46 |
1045                     IN6_IFF_DETACHED | IN6_IFF_DEPRECATED)) {
1046                         IFA_UNLOCK(ifa);
1047                         IFA_REMREF(ifa);
1048                         return EADDRNOTAVAIL;
1049                 }
1050                 outif = ifa->ifa_ifp;
1051                 IFA_UNLOCK(ifa);
1052                 IFA_REMREF(ifa);
1053         }
1054         inp->in6p_laddr = sin6.sin6_addr;
1055         inp->in6p_last_outifp = outif;
1056
1057         return 0;
1058 }
1059
1060 static int
1061 rip6_connect(struct socket *so, struct sockaddr *nam, __unused struct proc *p)
1062 {
1063         struct inpcb *inp = sotoinpcb(so);
1064         struct sockaddr_in6 *addr = (struct sockaddr_in6 *)(void *)nam;
1065         struct in6_addr *in6a = NULL;
1066         struct in6_addr storage;
1067         int error = 0;
1068 #if ENABLE_DEFAULT_SCOPE
1069         struct sockaddr_in6 tmp;
1070 #endif
1071         unsigned int ifscope;
1072         struct ifnet *outif = NULL;
1073
1074         if (inp == NULL
1075 #if NECP
1076             || (necp_socket_should_use_flow_divert(inp))
1077 #endif /* NECP */
1078             ) {
1079                 return inp == NULL ? EINVAL : EPROTOTYPE;
1080         }
1081         if (nam->sa_len != sizeof(*addr)) {
1082                 return EINVAL;
1083         }
1084         if (TAILQ_EMPTY(&ifnet_head)) {
1085                 return EADDRNOTAVAIL;
1086         }
1087         if (addr->sin6_family != AF_INET6) {
1088                 return EAFNOSUPPORT;
1089         }
1090
1091         if (!(so->so_flags1 & SOF1_CONNECT_COUNTED)) {
1092                 so->so_flags1 |= SOF1_CONNECT_COUNTED;
1093                 INC_ATOMIC_INT64_LIM(net_api_stats.nas_socket_inet6_dgram_connected);
1094         }
1095
1096 #if ENABLE_DEFAULT_SCOPE
1097         if (addr->sin6_scope_id == 0) { /* not change if specified  */
1098                 /* avoid overwrites */
1099                 tmp = *addr;
1100                 addr = &tmp;
1101                 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
1102         }
1103 #endif
1104
1105         /* KAME hack: embed scopeid */
1106         if (in6_embedscope(&SIN6(nam)->sin6_addr, SIN6(nam), inp, NULL, NULL) != 0) {
1107                 return EINVAL;
1108         }
1109
1110         ifscope = (inp->inp_flags & INP_BOUND_IF) ?
1111             inp->inp_boundifp->if_index : IFSCOPE_NONE;
1112
1113         /* Source address selection. XXX: need pcblookup? */
1114         in6a = in6_selectsrc(addr, inp->in6p_outputopts, inp, &inp->in6p_route,
1115             NULL, &storage, ifscope, &error);
1116         if (in6a == NULL) {
1117                 return error ? error : EADDRNOTAVAIL;
1118         }
1119         inp->in6p_laddr = *in6a;
1120         inp->in6p_faddr = addr->sin6_addr;
1121         if (inp->in6p_route.ro_rt != NULL) {
1122                 outif = inp->in6p_route.ro_rt->rt_ifp;
1123         }
1124         inp->in6p_last_outifp = outif;
1125
1126         soisconnected(so);
1127         return 0;
1128 }
1129
1130 static int
1131 rip6_shutdown(struct socket *so)
1132 {
1133         socantsendmore(so);
1134         return 0;
1135 }
1136
1137 static int
1138 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
1139     struct mbuf *control, struct proc *p)
1140 {
1141 #pragma unused(flags, p)
1142         struct inpcb *inp = sotoinpcb(so);
1143         int error = 0;
1144
1145         if (inp == NULL
1146 #if NECP
1147             || (necp_socket_should_use_flow_divert(inp))
1148 #endif /* NECP */
1149             ) {
1150                 if (inp == NULL) {
1151                         error = EINVAL;
1152                 } else {
1153                         error = EPROTOTYPE;
1154                 }
1155                 goto bad;
1156         }
1157
1158         return rip6_output(m, so, SIN6(nam), control, 1);
1159
1160 bad:
1161         VERIFY(error != 0);
1162
1163         if (m != NULL) {
1164                 m_freem(m);
1165         }
1166         if (control != NULL) {
1167                 m_freem(control);
1168         }
1169
1170         return error;
1171 }
1172
1173 struct pr_usrreqs rip6_usrreqs = {
1174         .pru_abort =            rip6_abort,
1175         .pru_attach =           rip6_attach,
1176         .pru_bind =             rip6_bind,
1177         .pru_connect =          rip6_connect,
1178         .pru_control =          in6_control,
1179         .pru_detach =           rip6_detach,
1180         .pru_disconnect =       rip6_disconnect,
1181         .pru_peeraddr =         in6_getpeeraddr,
1182         .pru_send =             rip6_send,
1183         .pru_shutdown =         rip6_shutdown,
1184         .pru_sockaddr =         in6_getsockaddr,
1185         .pru_sosend =           sosend,
1186         .pru_soreceive =        soreceive,
1187 };
1188
1189 __private_extern__ struct pr_usrreqs icmp6_dgram_usrreqs = {
1190         .pru_abort =            rip6_abort,
1191         .pru_attach =           icmp6_dgram_attach,
1192         .pru_bind =             rip6_bind,
1193         .pru_connect =          rip6_connect,
1194         .pru_control =          in6_control,
1195         .pru_detach =           rip6_detach,
1196         .pru_disconnect =       rip6_disconnect,
1197         .pru_peeraddr =         in6_getpeeraddr,
1198         .pru_send =             icmp6_dgram_send,
1199         .pru_shutdown =         rip6_shutdown,
1200         .pru_sockaddr =         in6_getsockaddr,
1201         .pru_sosend =           sosend,
1202         .pru_soreceive =        soreceive,
1203 };