sys/netinet6/in6_pcb.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  *
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * Copyright (c) 2010-2011 Juniper Networks, Inc.
   6  * All rights reserved.
   7  *
   8  * Portions of this software were developed by Robert N. M. Watson under
   9  * contract to Juniper Networks, Inc.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the project nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  *      $KAME: in6_pcb.c,v 1.31 2001/05/21 05:45:10 jinmei Exp $
  36  */
  37
  38 /*-
  39  * Copyright (c) 1982, 1986, 1991, 1993
  40  *      The Regents of the University of California.  All rights reserved.
  41  *
  42  * Redistribution and use in source and binary forms, with or without
  43  * modification, are permitted provided that the following conditions
  44  * are met:
  45  * 1. Redistributions of source code must retain the above copyright
  46  *    notice, this list of conditions and the following disclaimer.
  47  * 2. Redistributions in binary form must reproduce the above copyright
  48  *    notice, this list of conditions and the following disclaimer in the
  49  *    documentation and/or other materials provided with the distribution.
  50  * 3. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  *      @(#)in_pcb.c    8.2 (Berkeley) 1/4/94
  67  */
  68
  69 #include <sys/cdefs.h>
  70 __FBSDID("$FreeBSD$");
  71
  72 #include "opt_inet.h"
  73 #include "opt_inet6.h"
  74 #include "opt_ipsec.h"
  75 #include "opt_route.h"
  76 #include "opt_rss.h"
  77
  78 #include <sys/hash.h>
  79 #include <sys/param.h>
  80 #include <sys/systm.h>
  81 #include <sys/malloc.h>
  82 #include <sys/mbuf.h>
  83 #include <sys/domain.h>
  84 #include <sys/protosw.h>
  85 #include <sys/socket.h>
  86 #include <sys/socketvar.h>
  87 #include <sys/sockio.h>
  88 #include <sys/errno.h>
  89 #include <sys/time.h>
  90 #include <sys/priv.h>
  91 #include <sys/proc.h>
  92 #include <sys/jail.h>
  93
  94 #include <vm/uma.h>
  95
  96 #include <net/if.h>
  97 #include <net/if_var.h>
  98 #include <net/if_llatbl.h>
  99 #include <net/if_types.h>
 100 #include <net/route.h>
 101 #include <net/route/nhop.h>
 102
 103 #include <netinet/in.h>
 104 #include <netinet/in_var.h>
 105 #include <netinet/in_systm.h>
 106 #include <netinet/ip6.h>
 107 #include <netinet/ip_var.h>
 108
 109 #include <netinet6/ip6_var.h>
 110 #include <netinet6/nd6.h>
 111 #include <netinet/in_pcb.h>
 112 #include <netinet/in_pcb_var.h>
 113 #include <netinet6/in6_pcb.h>
 114 #include <netinet6/in6_fib.h>
 115 #include <netinet6/scope6_var.h>
 116
 117 int
 118 in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred)
 119 {
 120         struct socket *so = inp->inp_socket;
 121         u_int16_t lport = 0;
 122         int error, lookupflags = 0;
 123 #ifdef INVARIANTS
 124         struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
 125 #endif
 126
 127         INP_WLOCK_ASSERT(inp);
 128         INP_HASH_WLOCK_ASSERT(pcbinfo);
 129
 130         error = prison_local_ip6(cred, laddr,
 131             ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0));
 132         if (error)
 133                 return(error);
 134
 135         /* XXX: this is redundant when called from in6_pcbbind */
 136         if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)
 137                 lookupflags = INPLOOKUP_WILDCARD;
 138
 139         inp->inp_flags |= INP_ANONPORT;
 140
 141         error = in_pcb_lport(inp, NULL, &lport, cred, lookupflags);
 142         if (error != 0)
 143                 return (error);
 144
 145         inp->inp_lport = lport;
 146         if (in_pcbinshash(inp) != 0) {
 147                 inp->in6p_laddr = in6addr_any;
 148                 inp->inp_lport = 0;
 149                 return (EAGAIN);
 150         }
 151
 152         return (0);
 153 }
 154
 155 int
 156 in6_pcbbind(struct inpcb *inp, struct sockaddr *nam,
 157     struct ucred *cred)
 158 {
 159         struct socket *so = inp->inp_socket;
 160         struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL;
 161         struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
 162         u_short lport = 0;
 163         int error, lookupflags = 0;
 164         int reuseport = (so->so_options & SO_REUSEPORT);
 165
 166         /*
 167          * XXX: Maybe we could let SO_REUSEPORT_LB set SO_REUSEPORT bit here
 168          * so that we don't have to add to the (already messy) code below.
 169          */
 170         int reuseport_lb = (so->so_options & SO_REUSEPORT_LB);
 171
 172         INP_WLOCK_ASSERT(inp);
 173         INP_HASH_WLOCK_ASSERT(pcbinfo);
 174
 175         if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
 176                 return (EINVAL);
 177         if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)
 178                 lookupflags = INPLOOKUP_WILDCARD;
 179         if (nam == NULL) {
 180                 if ((error = prison_local_ip6(cred, &inp->in6p_laddr,
 181                     ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
 182                         return (error);
 183         } else {
 184                 sin6 = (struct sockaddr_in6 *)nam;
 185                 KASSERT(sin6->sin6_family == AF_INET6,
 186                     ("%s: invalid address family for %p", __func__, sin6));
 187                 KASSERT(sin6->sin6_len == sizeof(*sin6),
 188                     ("%s: invalid address length for %p", __func__, sin6));
 189
 190                 if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0)
 191                         return(error);
 192
 193                 if ((error = prison_local_ip6(cred, &sin6->sin6_addr,
 194                     ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
 195                         return (error);
 196
 197                 lport = sin6->sin6_port;
 198                 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
 199                         /*
 200                          * Treat SO_REUSEADDR as SO_REUSEPORT for multicast;
 201                          * allow compepte duplication of binding if
 202                          * SO_REUSEPORT is set, or if SO_REUSEADDR is set
 203                          * and a multicast address is bound on both
 204                          * new and duplicated sockets.
 205                          */
 206                         if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0)
 207                                 reuseport = SO_REUSEADDR|SO_REUSEPORT;
 208                         /*
 209                          * XXX: How to deal with SO_REUSEPORT_LB here?
 210                          * Treat same as SO_REUSEPORT for now.
 211                          */
 212                         if ((so->so_options &
 213                             (SO_REUSEADDR|SO_REUSEPORT_LB)) != 0)
 214                                 reuseport_lb = SO_REUSEADDR|SO_REUSEPORT_LB;
 215                 } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 216                         struct epoch_tracker et;
 217                         struct ifaddr *ifa;
 218
 219                         sin6->sin6_port = 0;            /* yech... */
 220                         NET_EPOCH_ENTER(et);
 221                         if ((ifa = ifa_ifwithaddr((struct sockaddr *)sin6)) ==
 222                             NULL &&
 223                             (inp->inp_flags & INP_BINDANY) == 0) {
 224                                 NET_EPOCH_EXIT(et);
 225                                 return (EADDRNOTAVAIL);
 226                         }
 227
 228                         /*
 229                          * XXX: bind to an anycast address might accidentally
 230                          * cause sending a packet with anycast source address.
 231                          * We should allow to bind to a deprecated address, since
 232                          * the application dares to use it.
 233                          */
 234                         if (ifa != NULL &&
 235                             ((struct in6_ifaddr *)ifa)->ia6_flags &
 236                             (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) {
 237                                 NET_EPOCH_EXIT(et);
 238                                 return (EADDRNOTAVAIL);
 239                         }
 240                         NET_EPOCH_EXIT(et);
 241                 }
 242                 if (lport) {
 243                         struct inpcb *t;
 244
 245                         /* GROSS */
 246                         if (ntohs(lport) <= V_ipport_reservedhigh &&
 247                             ntohs(lport) >= V_ipport_reservedlow &&
 248                             priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT))
 249                                 return (EACCES);
 250                         if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) &&
 251                             priv_check_cred(inp->inp_cred, PRIV_NETINET_REUSEPORT) != 0) {
 252                                 t = in6_pcblookup_local(pcbinfo,
 253                                     &sin6->sin6_addr, lport,
 254                                     INPLOOKUP_WILDCARD, cred);
 255                                 if (t &&
 256                                     ((inp->inp_flags2 & INP_BINDMULTI) == 0) &&
 257                                     (so->so_type != SOCK_STREAM ||
 258                                      IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) &&
 259                                     (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
 260                                      !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) ||
 261                                      (t->inp_flags2 & INP_REUSEPORT) ||
 262                                      (t->inp_flags2 & INP_REUSEPORT_LB) == 0) &&
 263                                     (inp->inp_cred->cr_uid !=
 264                                      t->inp_cred->cr_uid))
 265                                         return (EADDRINUSE);
 266
 267                                 /*
 268                                  * If the socket is a BINDMULTI socket, then
 269                                  * the credentials need to match and the
 270                                  * original socket also has to have been bound
 271                                  * with BINDMULTI.
 272                                  */
 273                                 if (t && (! in_pcbbind_check_bindmulti(inp, t)))
 274                                         return (EADDRINUSE);
 275
 276 #ifdef INET
 277                                 if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
 278                                     IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 279                                         struct sockaddr_in sin;
 280
 281                                         in6_sin6_2_sin(&sin, sin6);
 282                                         t = in_pcblookup_local(pcbinfo,
 283                                             sin.sin_addr, lport,
 284                                             INPLOOKUP_WILDCARD, cred);
 285                                         if (t &&
 286                                             ((inp->inp_flags2 & INP_BINDMULTI) == 0) &&
 287                                             (so->so_type != SOCK_STREAM ||
 288                                              ntohl(t->inp_faddr.s_addr) ==
 289                                               INADDR_ANY) &&
 290                                             (inp->inp_cred->cr_uid !=
 291                                              t->inp_cred->cr_uid))
 292                                                 return (EADDRINUSE);
 293
 294                                         if (t && (! in_pcbbind_check_bindmulti(inp, t)))
 295                                                 return (EADDRINUSE);
 296                                 }
 297 #endif
 298                         }
 299                         t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr,
 300                             lport, lookupflags, cred);
 301                         if (t && (reuseport & inp_so_options(t)) == 0 &&
 302                             (reuseport_lb & inp_so_options(t)) == 0) {
 303                                 return (EADDRINUSE);
 304                         }
 305 #ifdef INET
 306                         if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
 307                             IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 308                                 struct sockaddr_in sin;
 309
 310                                 in6_sin6_2_sin(&sin, sin6);
 311                                 t = in_pcblookup_local(pcbinfo, sin.sin_addr,
 312                                    lport, lookupflags, cred);
 313                                 if (t &&
 314                                     (reuseport & inp_so_options(t)) == 0 &&
 315                                     (reuseport_lb & inp_so_options(t)) == 0 &&
 316                                     (ntohl(t->inp_laddr.s_addr) != INADDR_ANY ||
 317                                         (t->inp_vflag & INP_IPV6PROTO) != 0)) {
 318                                         return (EADDRINUSE);
 319                                 }
 320                         }
 321 #endif
 322                 }
 323                 inp->in6p_laddr = sin6->sin6_addr;
 324         }
 325         if (lport == 0) {
 326                 if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) {
 327                         /* Undo an address bind that may have occurred. */
 328                         inp->in6p_laddr = in6addr_any;
 329                         return (error);
 330                 }
 331         } else {
 332                 inp->inp_lport = lport;
 333                 if (in_pcbinshash(inp) != 0) {
 334                         inp->in6p_laddr = in6addr_any;
 335                         inp->inp_lport = 0;
 336                         return (EAGAIN);
 337                 }
 338         }
 339         return (0);
 340 }
 341
 342 /*
 343  *   Transform old in6_pcbconnect() into an inner subroutine for new
 344  *   in6_pcbconnect(): Do some validity-checking on the remote
 345  *   address (in mbuf 'nam') and then determine local host address
 346  *   (i.e., which interface) to use to access that remote host.
 347  *
 348  *   This preserves definition of in6_pcbconnect(), while supporting a
 349  *   slightly different version for T/TCP.  (This is more than
 350  *   a bit of a kludge, but cleaning up the internal interfaces would
 351  *   have forced minor changes in every protocol).
 352  */
 353 static int
 354 in6_pcbladdr(struct inpcb *inp, struct sockaddr_in6 *sin6,
 355     struct in6_addr *plocal_addr6)
 356 {
 357         int error = 0;
 358         int scope_ambiguous = 0;
 359         struct in6_addr in6a;
 360         struct epoch_tracker et;
 361
 362         INP_WLOCK_ASSERT(inp);
 363         INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);        /* XXXRW: why? */
 364
 365         if (sin6->sin6_port == 0)
 366                 return (EADDRNOTAVAIL);
 367
 368         if (sin6->sin6_scope_id == 0 && !V_ip6_use_defzone)
 369                 scope_ambiguous = 1;
 370         if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0)
 371                 return(error);
 372
 373         if (!CK_STAILQ_EMPTY(&V_in6_ifaddrhead)) {
 374                 /*
 375                  * If the destination address is UNSPECIFIED addr,
 376                  * use the loopback addr, e.g ::1.
 377                  */
 378                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
 379                         sin6->sin6_addr = in6addr_loopback;
 380         }
 381         if ((error = prison_remote_ip6(inp->inp_cred, &sin6->sin6_addr)) != 0)
 382                 return (error);
 383
 384         NET_EPOCH_ENTER(et);
 385         error = in6_selectsrc_socket(sin6, inp->in6p_outputopts,
 386             inp, inp->inp_cred, scope_ambiguous, &in6a, NULL);
 387         NET_EPOCH_EXIT(et);
 388         if (error)
 389                 return (error);
 390
 391         /*
 392          * Do not update this earlier, in case we return with an error.
 393          *
 394          * XXX: this in6_selectsrc_socket result might replace the bound local
 395          * address with the address specified by setsockopt(IPV6_PKTINFO).
 396          * Is it the intended behavior?
 397          */
 398         *plocal_addr6 = in6a;
 399
 400         /*
 401          * Don't do pcblookup call here; return interface in
 402          * plocal_addr6
 403          * and exit to caller, that will do the lookup.
 404          */
 405
 406         return (0);
 407 }
 408
 409 /*
 410  * Outer subroutine:
 411  * Connect from a socket to a specified address.
 412  * Both address and port must be specified in argument sin.
 413  * If don't have a local address for this socket yet,
 414  * then pick one.
 415  */
 416 int
 417 in6_pcbconnect_mbuf(struct inpcb *inp, struct sockaddr *nam,
 418     struct ucred *cred, struct mbuf *m, bool rehash)
 419 {
 420         struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
 421         struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
 422         struct sockaddr_in6 laddr6;
 423         int error;
 424
 425         KASSERT(sin6->sin6_family == AF_INET6,
 426             ("%s: invalid address family for %p", __func__, sin6));
 427         KASSERT(sin6->sin6_len == sizeof(*sin6),
 428             ("%s: invalid address length for %p", __func__, sin6));
 429
 430         bzero(&laddr6, sizeof(laddr6));
 431         laddr6.sin6_family = AF_INET6;
 432
 433         INP_WLOCK_ASSERT(inp);
 434         INP_HASH_WLOCK_ASSERT(pcbinfo);
 435
 436 #ifdef ROUTE_MPATH
 437         if (CALC_FLOWID_OUTBOUND) {
 438                 uint32_t hash_type, hash_val;
 439
 440                 hash_val = fib6_calc_software_hash(&inp->in6p_laddr,
 441                     &sin6->sin6_addr, 0, sin6->sin6_port,
 442                     inp->inp_socket->so_proto->pr_protocol, &hash_type);
 443                 inp->inp_flowid = hash_val;
 444                 inp->inp_flowtype = hash_type;
 445         }
 446 #endif
 447         /*
 448          * Call inner routine, to assign local interface address.
 449          * in6_pcbladdr() may automatically fill in sin6_scope_id.
 450          */
 451         if ((error = in6_pcbladdr(inp, sin6, &laddr6.sin6_addr)) != 0)
 452                 return (error);
 453
 454         if (in6_pcblookup_hash_locked(pcbinfo, &sin6->sin6_addr,
 455                                sin6->sin6_port,
 456                               IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)
 457                               ? &laddr6.sin6_addr : &inp->in6p_laddr,
 458                               inp->inp_lport, 0, NULL, M_NODOM) != NULL) {
 459                 return (EADDRINUSE);
 460         }
 461         if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
 462                 if (inp->inp_lport == 0) {
 463                         /*
 464                          * rehash was required to be true in the past for
 465                          * this case; retain that convention.  However,
 466                          * we now call in_pcb_lport_dest rather than
 467                          * in6_pcbbind; the former does not insert into
 468                          * the hash table, the latter does.  Change rehash
 469                          * to false to do the in_pcbinshash below.
 470                          */
 471                         KASSERT(rehash == true,
 472                             ("Rehashing required for unbound inps"));
 473                         rehash = false;
 474                         error = in_pcb_lport_dest(inp,
 475                             (struct sockaddr *) &laddr6, &inp->inp_lport,
 476                             (struct sockaddr *) sin6, sin6->sin6_port, cred,
 477                             INPLOOKUP_WILDCARD);
 478                         if (error)
 479                                 return (error);
 480                 }
 481                 inp->in6p_laddr = laddr6.sin6_addr;
 482         }
 483         inp->in6p_faddr = sin6->sin6_addr;
 484         inp->inp_fport = sin6->sin6_port;
 485         /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
 486         inp->inp_flow &= ~IPV6_FLOWLABEL_MASK;
 487         if (inp->inp_flags & IN6P_AUTOFLOWLABEL)
 488                 inp->inp_flow |=
 489                     (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK);
 490
 491         if (rehash) {
 492                 in_pcbrehash(inp);
 493         } else {
 494                 in_pcbinshash(inp);
 495         }
 496
 497         return (0);
 498 }
 499
 500 int
 501 in6_pcbconnect(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
 502 {
 503
 504         return (in6_pcbconnect_mbuf(inp, nam, cred, NULL, true));
 505 }
 506
 507 void
 508 in6_pcbdisconnect(struct inpcb *inp)
 509 {
 510
 511         INP_WLOCK_ASSERT(inp);
 512         INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
 513
 514         bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr));
 515         inp->inp_fport = 0;
 516         /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
 517         inp->inp_flow &= ~IPV6_FLOWLABEL_MASK;
 518         in_pcbrehash(inp);
 519 }
 520
 521 struct sockaddr *
 522 in6_sockaddr(in_port_t port, struct in6_addr *addr_p)
 523 {
 524         struct sockaddr_in6 *sin6;
 525
 526         sin6 = malloc(sizeof *sin6, M_SONAME, M_WAITOK);
 527         bzero(sin6, sizeof *sin6);
 528         sin6->sin6_family = AF_INET6;
 529         sin6->sin6_len = sizeof(*sin6);
 530         sin6->sin6_port = port;
 531         sin6->sin6_addr = *addr_p;
 532         (void)sa6_recoverscope(sin6); /* XXX: should catch errors */
 533
 534         return (struct sockaddr *)sin6;
 535 }
 536
 537 struct sockaddr *
 538 in6_v4mapsin6_sockaddr(in_port_t port, struct in_addr *addr_p)
 539 {
 540         struct sockaddr_in sin;
 541         struct sockaddr_in6 *sin6_p;
 542
 543         bzero(&sin, sizeof sin);
 544         sin.sin_family = AF_INET;
 545         sin.sin_len = sizeof(sin);
 546         sin.sin_port = port;
 547         sin.sin_addr = *addr_p;
 548
 549         sin6_p = malloc(sizeof *sin6_p, M_SONAME,
 550                 M_WAITOK);
 551         in6_sin_2_v4mapsin6(&sin, sin6_p);
 552
 553         return (struct sockaddr *)sin6_p;
 554 }
 555
 556 int
 557 in6_getsockaddr(struct socket *so, struct sockaddr **nam)
 558 {
 559         struct inpcb *inp;
 560         struct in6_addr addr;
 561         in_port_t port;
 562
 563         inp = sotoinpcb(so);
 564         KASSERT(inp != NULL, ("in6_getsockaddr: inp == NULL"));
 565
 566         INP_RLOCK(inp);
 567         port = inp->inp_lport;
 568         addr = inp->in6p_laddr;
 569         INP_RUNLOCK(inp);
 570
 571         *nam = in6_sockaddr(port, &addr);
 572         return 0;
 573 }
 574
 575 int
 576 in6_getpeeraddr(struct socket *so, struct sockaddr **nam)
 577 {
 578         struct inpcb *inp;
 579         struct in6_addr addr;
 580         in_port_t port;
 581
 582         inp = sotoinpcb(so);
 583         KASSERT(inp != NULL, ("in6_getpeeraddr: inp == NULL"));
 584
 585         INP_RLOCK(inp);
 586         port = inp->inp_fport;
 587         addr = inp->in6p_faddr;
 588         INP_RUNLOCK(inp);
 589
 590         *nam = in6_sockaddr(port, &addr);
 591         return 0;
 592 }
 593
 594 int
 595 in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam)
 596 {
 597         struct  inpcb *inp;
 598         int     error;
 599
 600         inp = sotoinpcb(so);
 601         KASSERT(inp != NULL, ("in6_mapped_sockaddr: inp == NULL"));
 602
 603 #ifdef INET
 604         if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) {
 605                 error = in_getsockaddr(so, nam);
 606                 if (error == 0)
 607                         in6_sin_2_v4mapsin6_in_sock(nam);
 608         } else
 609 #endif
 610         {
 611                 /* scope issues will be handled in in6_getsockaddr(). */
 612                 error = in6_getsockaddr(so, nam);
 613         }
 614
 615         return error;
 616 }
 617
 618 int
 619 in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam)
 620 {
 621         struct  inpcb *inp;
 622         int     error;
 623
 624         inp = sotoinpcb(so);
 625         KASSERT(inp != NULL, ("in6_mapped_peeraddr: inp == NULL"));
 626
 627 #ifdef INET
 628         if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) {
 629                 error = in_getpeeraddr(so, nam);
 630                 if (error == 0)
 631                         in6_sin_2_v4mapsin6_in_sock(nam);
 632         } else
 633 #endif
 634         /* scope issues will be handled in in6_getpeeraddr(). */
 635         error = in6_getpeeraddr(so, nam);
 636
 637         return error;
 638 }
 639
 640 /*
 641  * Pass some notification to all connections of a protocol
 642  * associated with address dst.  The local address and/or port numbers
 643  * may be specified to limit the search.  The "usual action" will be
 644  * taken, depending on the ctlinput cmd.  The caller must filter any
 645  * cmds that are uninteresting (e.g., no error in the map).
 646  * Call the protocol specific routine (if any) to report
 647  * any errors for each matching socket.
 648  */
 649 static bool
 650 inp_match6(const struct inpcb *inp, void *v __unused)
 651 {
 652
 653         return ((inp->inp_vflag & INP_IPV6) != 0);
 654 }
 655
 656 void
 657 in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr_in6 *sa6_dst,
 658     u_int fport_arg, const struct sockaddr_in6 *src, u_int lport_arg,
 659     int errno, void *cmdarg,
 660     struct inpcb *(*notify)(struct inpcb *, int))
 661 {
 662         struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_WLOCKPCB,
 663             inp_match6, NULL);
 664         struct inpcb *inp;
 665         struct sockaddr_in6 sa6_src;
 666         u_short fport = fport_arg, lport = lport_arg;
 667         u_int32_t flowinfo;
 668
 669         if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr))
 670                 return;
 671
 672         /*
 673          * note that src can be NULL when we get notify by local fragmentation.
 674          */
 675         sa6_src = (src == NULL) ? sa6_any : *src;
 676         flowinfo = sa6_src.sin6_flowinfo;
 677
 678         while ((inp = inp_next(&inpi)) != NULL) {
 679                 INP_WLOCK_ASSERT(inp);
 680                 /*
 681                  * If the error designates a new path MTU for a destination
 682                  * and the application (associated with this socket) wanted to
 683                  * know the value, notify.
 684                  * XXX: should we avoid to notify the value to TCP sockets?
 685                  */
 686                 if (errno == EMSGSIZE && cmdarg != NULL)
 687                         ip6_notify_pmtu(inp, sa6_dst, *(uint32_t *)cmdarg);
 688
 689                 /*
 690                  * Detect if we should notify the error. If no source and
 691                  * destination ports are specified, but non-zero flowinfo and
 692                  * local address match, notify the error. This is the case
 693                  * when the error is delivered with an encrypted buffer
 694                  * by ESP. Otherwise, just compare addresses and ports
 695                  * as usual.
 696                  */
 697                 if (lport == 0 && fport == 0 && flowinfo &&
 698                     inp->inp_socket != NULL &&
 699                     flowinfo == (inp->inp_flow & IPV6_FLOWLABEL_MASK) &&
 700                     IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr))
 701                         goto do_notify;
 702                 else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr,
 703                                              &sa6_dst->sin6_addr) ||
 704                          inp->inp_socket == 0 ||
 705                          (lport && inp->inp_lport != lport) ||
 706                          (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) &&
 707                           !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr,
 708                                               &sa6_src.sin6_addr)) ||
 709                          (fport && inp->inp_fport != fport)) {
 710                         continue;
 711                 }
 712
 713           do_notify:
 714                 if (notify)
 715                         (*notify)(inp, errno);
 716         }
 717 }
 718
 719 /*
 720  * Lookup a PCB based on the local address and port.  Caller must hold the
 721  * hash lock.  No inpcb locks or references are acquired.
 722  */
 723 struct inpcb *
 724 in6_pcblookup_local(struct inpcbinfo *pcbinfo, struct in6_addr *laddr,
 725     u_short lport, int lookupflags, struct ucred *cred)
 726 {
 727         struct inpcb *inp;
 728         int matchwild = 3, wildcard;
 729
 730         KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
 731             ("%s: invalid lookup flags %d", __func__, lookupflags));
 732
 733         INP_HASH_LOCK_ASSERT(pcbinfo);
 734
 735         if ((lookupflags & INPLOOKUP_WILDCARD) == 0) {
 736                 struct inpcbhead *head;
 737                 /*
 738                  * Look for an unconnected (wildcard foreign addr) PCB that
 739                  * matches the local address and port we're looking for.
 740                  */
 741                 head = &pcbinfo->ipi_hashbase[INP_PCBHASH_WILD(lport,
 742                     pcbinfo->ipi_hashmask)];
 743                 CK_LIST_FOREACH(inp, head, inp_hash) {
 744                         /* XXX inp locking */
 745                         if ((inp->inp_vflag & INP_IPV6) == 0)
 746                                 continue;
 747                         if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) &&
 748                             IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
 749                             inp->inp_lport == lport) {
 750                                 /* Found. */
 751                                 if (prison_equal_ip6(cred->cr_prison,
 752                                     inp->inp_cred->cr_prison))
 753                                         return (inp);
 754                         }
 755                 }
 756                 /*
 757                  * Not found.
 758                  */
 759                 return (NULL);
 760         } else {
 761                 struct inpcbporthead *porthash;
 762                 struct inpcbport *phd;
 763                 struct inpcb *match = NULL;
 764                 /*
 765                  * Best fit PCB lookup.
 766                  *
 767                  * First see if this local port is in use by looking on the
 768                  * port hash list.
 769                  */
 770                 porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport,
 771                     pcbinfo->ipi_porthashmask)];
 772                 CK_LIST_FOREACH(phd, porthash, phd_hash) {
 773                         if (phd->phd_port == lport)
 774                                 break;
 775                 }
 776                 if (phd != NULL) {
 777                         /*
 778                          * Port is in use by one or more PCBs. Look for best
 779                          * fit.
 780                          */
 781                         CK_LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
 782                                 wildcard = 0;
 783                                 if (!prison_equal_ip6(cred->cr_prison,
 784                                     inp->inp_cred->cr_prison))
 785                                         continue;
 786                                 /* XXX inp locking */
 787                                 if ((inp->inp_vflag & INP_IPV6) == 0)
 788                                         continue;
 789                                 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
 790                                         wildcard++;
 791                                 if (!IN6_IS_ADDR_UNSPECIFIED(
 792                                         &inp->in6p_laddr)) {
 793                                         if (IN6_IS_ADDR_UNSPECIFIED(laddr))
 794                                                 wildcard++;
 795                                         else if (!IN6_ARE_ADDR_EQUAL(
 796                                             &inp->in6p_laddr, laddr))
 797                                                 continue;
 798                                 } else {
 799                                         if (!IN6_IS_ADDR_UNSPECIFIED(laddr))
 800                                                 wildcard++;
 801                                 }
 802                                 if (wildcard < matchwild) {
 803                                         match = inp;
 804                                         matchwild = wildcard;
 805                                         if (matchwild == 0)
 806                                                 break;
 807                                 }
 808                         }
 809                 }
 810                 return (match);
 811         }
 812 }
 813
 814 static bool
 815 in6_multi_match(const struct inpcb *inp, void *v __unused)
 816 {
 817
 818         if ((inp->inp_vflag & INP_IPV6) && inp->in6p_moptions != NULL)
 819                 return (true);
 820         else
 821                 return (false);
 822 }
 823
 824 void
 825 in6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
 826 {
 827         struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_RLOCKPCB,
 828             in6_multi_match, NULL);
 829         struct inpcb *inp;
 830         struct in6_multi *inm;
 831         struct in6_mfilter *imf;
 832         struct ip6_moptions *im6o;
 833
 834         IN6_MULTI_LOCK_ASSERT();
 835
 836         while ((inp = inp_next(&inpi)) != NULL) {
 837                 INP_RLOCK_ASSERT(inp);
 838
 839                 im6o = inp->in6p_moptions;
 840                 /*
 841                  * Unselect the outgoing ifp for multicast if it
 842                  * is being detached.
 843                  */
 844                 if (im6o->im6o_multicast_ifp == ifp)
 845                         im6o->im6o_multicast_ifp = NULL;
 846                 /*
 847                  * Drop multicast group membership if we joined
 848                  * through the interface being detached.
 849                  */
 850 restart:
 851                 IP6_MFILTER_FOREACH(imf, &im6o->im6o_head) {
 852                         if ((inm = imf->im6f_in6m) == NULL)
 853                                 continue;
 854                         if (inm->in6m_ifp != ifp)
 855                                 continue;
 856                         ip6_mfilter_remove(&im6o->im6o_head, imf);
 857                         in6_leavegroup_locked(inm, NULL);
 858                         ip6_mfilter_free(imf);
 859                         goto restart;
 860                 }
 861         }
 862 }
 863
 864 /*
 865  * Check for alternatives when higher level complains
 866  * about service problems.  For now, invalidate cached
 867  * routing information.  If the route was created dynamically
 868  * (by a redirect), time to try a default gateway again.
 869  */
 870 void
 871 in6_losing(struct inpcb *inp)
 872 {
 873
 874         RO_INVALIDATE_CACHE(&inp->inp_route6);
 875 }
 876
 877 /*
 878  * After a routing change, flush old routing
 879  * and allocate a (hopefully) better one.
 880  */
 881 struct inpcb *
 882 in6_rtchange(struct inpcb *inp, int errno __unused)
 883 {
 884
 885         RO_INVALIDATE_CACHE(&inp->inp_route6);
 886         return inp;
 887 }
 888
 889 static bool
 890 in6_pcblookup_lb_numa_match(const struct inpcblbgroup *grp, int domain)
 891 {
 892         return (domain == M_NODOM || domain == grp->il_numa_domain);
 893 }
 894
 895 static struct inpcb *
 896 in6_pcblookup_lbgroup(const struct inpcbinfo *pcbinfo,
 897     const struct in6_addr *laddr, uint16_t lport, const struct in6_addr *faddr,
 898     uint16_t fport, int lookupflags, uint8_t domain)
 899 {
 900         const struct inpcblbgrouphead *hdr;
 901         struct inpcblbgroup *grp;
 902         struct inpcblbgroup *jail_exact, *jail_wild, *local_exact, *local_wild;
 903
 904         INP_HASH_LOCK_ASSERT(pcbinfo);
 905
 906         hdr = &pcbinfo->ipi_lbgrouphashbase[
 907             INP_PCBPORTHASH(lport, pcbinfo->ipi_lbgrouphashmask)];
 908
 909         /*
 910          * Search for an LB group match based on the following criteria:
 911          * - prefer jailed groups to non-jailed groups
 912          * - prefer exact source address matches to wildcard matches
 913          * - prefer groups bound to the specified NUMA domain
 914          */
 915         jail_exact = jail_wild = local_exact = local_wild = NULL;
 916         CK_LIST_FOREACH(grp, hdr, il_list) {
 917                 bool injail;
 918
 919 #ifdef INET
 920                 if (!(grp->il_vflag & INP_IPV6))
 921                         continue;
 922 #endif
 923                 if (grp->il_lport != lport)
 924                         continue;
 925
 926                 injail = prison_flag(grp->il_cred, PR_IP6) != 0;
 927                 if (injail && prison_check_ip6_locked(grp->il_cred->cr_prison,
 928                     laddr) != 0)
 929                         continue;
 930
 931                 if (IN6_ARE_ADDR_EQUAL(&grp->il6_laddr, laddr)) {
 932                         if (injail) {
 933                                 jail_exact = grp;
 934                                 if (in6_pcblookup_lb_numa_match(grp, domain))
 935                                         /* This is a perfect match. */
 936                                         goto out;
 937                         } else if (local_exact == NULL ||
 938                             in6_pcblookup_lb_numa_match(grp, domain)) {
 939                                 local_exact = grp;
 940                         }
 941                 } else if (IN6_IS_ADDR_UNSPECIFIED(&grp->il6_laddr) &&
 942                     (lookupflags & INPLOOKUP_WILDCARD) != 0) {
 943                         if (injail) {
 944                                 if (jail_wild == NULL ||
 945                                     in6_pcblookup_lb_numa_match(grp, domain))
 946                                         jail_wild = grp;
 947                         } else if (local_wild == NULL ||
 948                             in6_pcblookup_lb_numa_match(grp, domain)) {
 949                                 local_wild = grp;
 950                         }
 951                 }
 952         }
 953
 954         if (jail_exact != NULL)
 955                 grp = jail_exact;
 956         else if (jail_wild != NULL)
 957                 grp = jail_wild;
 958         else if (local_exact != NULL)
 959                 grp = local_exact;
 960         else
 961                 grp = local_wild;
 962         if (grp == NULL)
 963                 return (NULL);
 964 out:
 965         return (grp->il_inp[INP6_PCBLBGROUP_PKTHASH(faddr, lport, fport) %
 966             grp->il_inpcnt]);
 967 }
 968
 969 /*
 970  * Lookup PCB in hash list.  Used in in_pcb.c as well as here.
 971  */
 972 struct inpcb *
 973 in6_pcblookup_hash_locked(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
 974     u_int fport_arg, struct in6_addr *laddr, u_int lport_arg,
 975     int lookupflags, struct ifnet *ifp, uint8_t numa_domain)
 976 {
 977         struct inpcbhead *head;
 978         struct inpcb *inp, *tmpinp;
 979         u_short fport = fport_arg, lport = lport_arg;
 980
 981         KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
 982             ("%s: invalid lookup flags %d", __func__, lookupflags));
 983
 984         INP_HASH_LOCK_ASSERT(pcbinfo);
 985
 986         /*
 987          * First look for an exact match.
 988          */
 989         tmpinp = NULL;
 990         head = &pcbinfo->ipi_hashbase[INP6_PCBHASH(faddr, lport, fport,
 991             pcbinfo->ipi_hashmask)];
 992         CK_LIST_FOREACH(inp, head, inp_hash) {
 993                 /* XXX inp locking */
 994                 if ((inp->inp_vflag & INP_IPV6) == 0)
 995                         continue;
 996                 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) &&
 997                     IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
 998                     inp->inp_fport == fport &&
 999                     inp->inp_lport == lport) {
1000                         /*
1001                          * XXX We should be able to directly return
1002                          * the inp here, without any checks.
1003                          * Well unless both bound with SO_REUSEPORT?
1004                          */
1005                         if (prison_flag(inp->inp_cred, PR_IP6))
1006                                 return (inp);
1007                         if (tmpinp == NULL)
1008                                 tmpinp = inp;
1009                 }
1010         }
1011         if (tmpinp != NULL)
1012                 return (tmpinp);
1013
1014         /*
1015          * Then look for a wildcard match, if requested.
1016          */
1017         if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
1018                 struct inpcb *local_wild = NULL, *local_exact = NULL;
1019                 struct inpcb *jail_wild = NULL;
1020                 int injail;
1021
1022                 /*
1023                  * First see if an LB group matches the request before scanning
1024                  * all sockets on this port.
1025                  */
1026                 inp = in6_pcblookup_lbgroup(pcbinfo, laddr, lport, faddr,
1027                     fport, lookupflags, numa_domain);
1028                 if (inp != NULL)
1029                         return (inp);
1030
1031                 /*
1032                  * Order of socket selection - we always prefer jails.
1033                  *      1. jailed, non-wild.
1034                  *      2. jailed, wild.
1035                  *      3. non-jailed, non-wild.
1036                  *      4. non-jailed, wild.
1037                  */
1038                 head = &pcbinfo->ipi_hashbase[INP_PCBHASH_WILD(lport,
1039                     pcbinfo->ipi_hashmask)];
1040                 CK_LIST_FOREACH(inp, head, inp_hash) {
1041                         /* XXX inp locking */
1042                         if ((inp->inp_vflag & INP_IPV6) == 0)
1043                                 continue;
1044
1045                         if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
1046                             inp->inp_lport != lport) {
1047                                 continue;
1048                         }
1049
1050                         injail = prison_flag(inp->inp_cred, PR_IP6);
1051                         if (injail) {
1052                                 if (prison_check_ip6_locked(
1053                                     inp->inp_cred->cr_prison, laddr) != 0)
1054                                         continue;
1055                         } else {
1056                                 if (local_exact != NULL)
1057                                         continue;
1058                         }
1059
1060                         if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) {
1061                                 if (injail)
1062                                         return (inp);
1063                                 else
1064                                         local_exact = inp;
1065                         } else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
1066                                 if (injail)
1067                                         jail_wild = inp;
1068                                 else
1069                                         local_wild = inp;
1070                         }
1071                 } /* LIST_FOREACH */
1072
1073                 if (jail_wild != NULL)
1074                         return (jail_wild);
1075                 if (local_exact != NULL)
1076                         return (local_exact);
1077                 if (local_wild != NULL)
1078                         return (local_wild);
1079         } /* if ((lookupflags & INPLOOKUP_WILDCARD) != 0) */
1080
1081         /*
1082          * Not found.
1083          */
1084         return (NULL);
1085 }
1086
1087 /*
1088  * Lookup PCB in hash list, using pcbinfo tables.  This variation locks the
1089  * hash list lock, and will return the inpcb locked (i.e., requires
1090  * INPLOOKUP_LOCKPCB).
1091  */
1092 static struct inpcb *
1093 in6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
1094     u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags,
1095     struct ifnet *ifp, uint8_t numa_domain)
1096 {
1097         struct inpcb *inp;
1098
1099         smr_enter(pcbinfo->ipi_smr);
1100         inp = in6_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport,
1101             lookupflags & INPLOOKUP_WILDCARD, ifp, numa_domain);
1102         if (inp != NULL) {
1103                 if (__predict_false(inp_smr_lock(inp,
1104                     (lookupflags & INPLOOKUP_LOCKMASK)) == false))
1105                         inp = NULL;
1106         } else
1107                 smr_exit(pcbinfo->ipi_smr);
1108
1109         return (inp);
1110 }
1111
1112 /*
1113  * Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf
1114  * from which a pre-calculated hash value may be extracted.
1115  */
1116 struct inpcb *
1117 in6_pcblookup(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, u_int fport,
1118     struct in6_addr *laddr, u_int lport, int lookupflags, struct ifnet *ifp)
1119 {
1120
1121         KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
1122             ("%s: invalid lookup flags %d", __func__, lookupflags));
1123         KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
1124             ("%s: LOCKPCB not set", __func__));
1125
1126         return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
1127             lookupflags, ifp, M_NODOM));
1128 }
1129
1130 struct inpcb *
1131 in6_pcblookup_mbuf(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
1132     u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags,
1133     struct ifnet *ifp, struct mbuf *m)
1134 {
1135
1136         KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
1137             ("%s: invalid lookup flags %d", __func__, lookupflags));
1138         KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
1139             ("%s: LOCKPCB not set", __func__));
1140
1141         return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
1142             lookupflags, ifp, m->m_pkthdr.numa_domain));
1143 }
1144
1145 void
1146 init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m, int srcordst)
1147 {
1148         struct ip6_hdr *ip;
1149
1150         ip = mtod(m, struct ip6_hdr *);
1151         bzero(sin6, sizeof(*sin6));
1152         sin6->sin6_len = sizeof(*sin6);
1153         sin6->sin6_family = AF_INET6;
1154         sin6->sin6_addr = srcordst ? ip->ip6_dst : ip->ip6_src;
1155
1156         (void)sa6_recoverscope(sin6); /* XXX: should catch errors... */
1157
1158         return;
1159 }