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/tcp_var.h>
 107 #include <netinet/ip6.h>
 108 #include <netinet/ip_var.h>
 109
 110 #include <netinet6/ip6_var.h>
 111 #include <netinet6/nd6.h>
 112 #include <netinet/in_pcb.h>
 113 #include <netinet/in_pcb_var.h>
 114 #include <netinet6/in6_pcb.h>
 115 #include <netinet6/in6_fib.h>
 116 #include <netinet6/scope6_var.h>
 117
 118 int
 119 in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred)
 120 {
 121         struct socket *so = inp->inp_socket;
 122         u_int16_t lport = 0;
 123         int error, lookupflags = 0;
 124 #ifdef INVARIANTS
 125         struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
 126 #endif
 127
 128         INP_WLOCK_ASSERT(inp);
 129         INP_HASH_WLOCK_ASSERT(pcbinfo);
 130
 131         error = prison_local_ip6(cred, laddr,
 132             ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0));
 133         if (error)
 134                 return(error);
 135
 136         /* XXX: this is redundant when called from in6_pcbbind */
 137         if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)
 138                 lookupflags = INPLOOKUP_WILDCARD;
 139
 140         inp->inp_flags |= INP_ANONPORT;
 141
 142         error = in_pcb_lport(inp, NULL, &lport, cred, lookupflags);
 143         if (error != 0)
 144                 return (error);
 145
 146         inp->inp_lport = lport;
 147         if (in_pcbinshash(inp) != 0) {
 148                 inp->in6p_laddr = in6addr_any;
 149                 inp->inp_lport = 0;
 150                 return (EAGAIN);
 151         }
 152
 153         return (0);
 154 }
 155
 156 int
 157 in6_pcbbind(struct inpcb *inp, struct sockaddr *nam,
 158     struct ucred *cred)
 159 {
 160         struct socket *so = inp->inp_socket;
 161         struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL;
 162         struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
 163         u_short lport = 0;
 164         int error, lookupflags = 0;
 165         int reuseport = (so->so_options & SO_REUSEPORT);
 166
 167         /*
 168          * XXX: Maybe we could let SO_REUSEPORT_LB set SO_REUSEPORT bit here
 169          * so that we don't have to add to the (already messy) code below.
 170          */
 171         int reuseport_lb = (so->so_options & SO_REUSEPORT_LB);
 172
 173         INP_WLOCK_ASSERT(inp);
 174         INP_HASH_WLOCK_ASSERT(pcbinfo);
 175
 176         if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
 177                 return (EINVAL);
 178         if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0)
 179                 lookupflags = INPLOOKUP_WILDCARD;
 180         if (nam == NULL) {
 181                 if ((error = prison_local_ip6(cred, &inp->in6p_laddr,
 182                     ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
 183                         return (error);
 184         } else {
 185                 sin6 = (struct sockaddr_in6 *)nam;
 186                 KASSERT(sin6->sin6_family == AF_INET6,
 187                     ("%s: invalid address family for %p", __func__, sin6));
 188                 KASSERT(sin6->sin6_len == sizeof(*sin6),
 189                     ("%s: invalid address length for %p", __func__, sin6));
 190
 191                 if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0)
 192                         return(error);
 193
 194                 if ((error = prison_local_ip6(cred, &sin6->sin6_addr,
 195                     ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
 196                         return (error);
 197
 198                 lport = sin6->sin6_port;
 199                 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
 200                         /*
 201                          * Treat SO_REUSEADDR as SO_REUSEPORT for multicast;
 202                          * allow compepte duplication of binding if
 203                          * SO_REUSEPORT is set, or if SO_REUSEADDR is set
 204                          * and a multicast address is bound on both
 205                          * new and duplicated sockets.
 206                          */
 207                         if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0)
 208                                 reuseport = SO_REUSEADDR|SO_REUSEPORT;
 209                         /*
 210                          * XXX: How to deal with SO_REUSEPORT_LB here?
 211                          * Treat same as SO_REUSEPORT for now.
 212                          */
 213                         if ((so->so_options &
 214                             (SO_REUSEADDR|SO_REUSEPORT_LB)) != 0)
 215                                 reuseport_lb = SO_REUSEADDR|SO_REUSEPORT_LB;
 216                 } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 217                         struct epoch_tracker et;
 218                         struct ifaddr *ifa;
 219
 220                         sin6->sin6_port = 0;            /* yech... */
 221                         NET_EPOCH_ENTER(et);
 222                         if ((ifa = ifa_ifwithaddr((struct sockaddr *)sin6)) ==
 223                             NULL &&
 224                             (inp->inp_flags & INP_BINDANY) == 0) {
 225                                 NET_EPOCH_EXIT(et);
 226                                 return (EADDRNOTAVAIL);
 227                         }
 228
 229                         /*
 230                          * XXX: bind to an anycast address might accidentally
 231                          * cause sending a packet with anycast source address.
 232                          * We should allow to bind to a deprecated address, since
 233                          * the application dares to use it.
 234                          */
 235                         if (ifa != NULL &&
 236                             ((struct in6_ifaddr *)ifa)->ia6_flags &
 237                             (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) {
 238                                 NET_EPOCH_EXIT(et);
 239                                 return (EADDRNOTAVAIL);
 240                         }
 241                         NET_EPOCH_EXIT(et);
 242                 }
 243                 if (lport) {
 244                         struct inpcb *t;
 245
 246                         /* GROSS */
 247                         if (ntohs(lport) <= V_ipport_reservedhigh &&
 248                             ntohs(lport) >= V_ipport_reservedlow &&
 249                             priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT))
 250                                 return (EACCES);
 251                         if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) &&
 252                             priv_check_cred(inp->inp_cred, PRIV_NETINET_REUSEPORT) != 0) {
 253                                 t = in6_pcblookup_local(pcbinfo,
 254                                     &sin6->sin6_addr, lport,
 255                                     INPLOOKUP_WILDCARD, cred);
 256                                 if (t &&
 257                                     ((inp->inp_flags2 & INP_BINDMULTI) == 0) &&
 258                                     (so->so_type != SOCK_STREAM ||
 259                                      IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) &&
 260                                     (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
 261                                      !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) ||
 262                                      (t->inp_flags2 & INP_REUSEPORT) ||
 263                                      (t->inp_flags2 & INP_REUSEPORT_LB) == 0) &&
 264                                     (inp->inp_cred->cr_uid !=
 265                                      t->inp_cred->cr_uid))
 266                                         return (EADDRINUSE);
 267
 268                                 /*
 269                                  * If the socket is a BINDMULTI socket, then
 270                                  * the credentials need to match and the
 271                                  * original socket also has to have been bound
 272                                  * with BINDMULTI.
 273                                  */
 274                                 if (t && (! in_pcbbind_check_bindmulti(inp, t)))
 275                                         return (EADDRINUSE);
 276
 277 #ifdef INET
 278                                 if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
 279                                     IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 280                                         struct sockaddr_in sin;
 281
 282                                         in6_sin6_2_sin(&sin, sin6);
 283                                         t = in_pcblookup_local(pcbinfo,
 284                                             sin.sin_addr, lport,
 285                                             INPLOOKUP_WILDCARD, cred);
 286                                         if (t &&
 287                                             ((inp->inp_flags2 & INP_BINDMULTI) == 0) &&
 288                                             (so->so_type != SOCK_STREAM ||
 289                                              ntohl(t->inp_faddr.s_addr) ==
 290                                               INADDR_ANY) &&
 291                                             (inp->inp_cred->cr_uid !=
 292                                              t->inp_cred->cr_uid))
 293                                                 return (EADDRINUSE);
 294
 295                                         if (t && (! in_pcbbind_check_bindmulti(inp, t)))
 296                                                 return (EADDRINUSE);
 297                                 }
 298 #endif
 299                         }
 300                         t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr,
 301                             lport, lookupflags, cred);
 302                         if (t && (reuseport & inp_so_options(t)) == 0 &&
 303                             (reuseport_lb & inp_so_options(t)) == 0) {
 304                                 return (EADDRINUSE);
 305                         }
 306 #ifdef INET
 307                         if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
 308                             IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 309                                 struct sockaddr_in sin;
 310
 311                                 in6_sin6_2_sin(&sin, sin6);
 312                                 t = in_pcblookup_local(pcbinfo, sin.sin_addr,
 313                                    lport, lookupflags, cred);
 314                                 if (t &&
 315                                     (reuseport & inp_so_options(t)) == 0 &&
 316                                     (reuseport_lb & inp_so_options(t)) == 0 &&
 317                                     (ntohl(t->inp_laddr.s_addr) != INADDR_ANY ||
 318                                         (t->inp_vflag & INP_IPV6PROTO) != 0)) {
 319                                         return (EADDRINUSE);
 320                                 }
 321                         }
 322 #endif
 323                 }
 324                 inp->in6p_laddr = sin6->sin6_addr;
 325         }
 326         if (lport == 0) {
 327                 if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) {
 328                         /* Undo an address bind that may have occurred. */
 329                         inp->in6p_laddr = in6addr_any;
 330                         return (error);
 331                 }
 332         } else {
 333                 inp->inp_lport = lport;
 334                 if (in_pcbinshash(inp) != 0) {
 335                         inp->in6p_laddr = in6addr_any;
 336                         inp->inp_lport = 0;
 337                         return (EAGAIN);
 338                 }
 339         }
 340         return (0);
 341 }
 342
 343 /*
 344  *   Transform old in6_pcbconnect() into an inner subroutine for new
 345  *   in6_pcbconnect(): Do some validity-checking on the remote
 346  *   address (in mbuf 'nam') and then determine local host address
 347  *   (i.e., which interface) to use to access that remote host.
 348  *
 349  *   This preserves definition of in6_pcbconnect(), while supporting a
 350  *   slightly different version for T/TCP.  (This is more than
 351  *   a bit of a kludge, but cleaning up the internal interfaces would
 352  *   have forced minor changes in every protocol).
 353  */
 354 static int
 355 in6_pcbladdr(struct inpcb *inp, struct sockaddr_in6 *sin6,
 356     struct in6_addr *plocal_addr6)
 357 {
 358         int error = 0;
 359         int scope_ambiguous = 0;
 360         struct in6_addr in6a;
 361         struct epoch_tracker et;
 362
 363         INP_WLOCK_ASSERT(inp);
 364         INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);        /* XXXRW: why? */
 365
 366         if (sin6->sin6_port == 0)
 367                 return (EADDRNOTAVAIL);
 368
 369         if (sin6->sin6_scope_id == 0 && !V_ip6_use_defzone)
 370                 scope_ambiguous = 1;
 371         if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0)
 372                 return(error);
 373
 374         if (!CK_STAILQ_EMPTY(&V_in6_ifaddrhead)) {
 375                 /*
 376                  * If the destination address is UNSPECIFIED addr,
 377                  * use the loopback addr, e.g ::1.
 378                  */
 379                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
 380                         sin6->sin6_addr = in6addr_loopback;
 381         }
 382         if ((error = prison_remote_ip6(inp->inp_cred, &sin6->sin6_addr)) != 0)
 383                 return (error);
 384
 385         NET_EPOCH_ENTER(et);
 386         error = in6_selectsrc_socket(sin6, inp->in6p_outputopts,
 387             inp, inp->inp_cred, scope_ambiguous, &in6a, NULL);
 388         NET_EPOCH_EXIT(et);
 389         if (error)
 390                 return (error);
 391
 392         /*
 393          * Do not update this earlier, in case we return with an error.
 394          *
 395          * XXX: this in6_selectsrc_socket result might replace the bound local
 396          * address with the address specified by setsockopt(IPV6_PKTINFO).
 397          * Is it the intended behavior?
 398          */
 399         *plocal_addr6 = in6a;
 400
 401         /*
 402          * Don't do pcblookup call here; return interface in
 403          * plocal_addr6
 404          * and exit to caller, that will do the lookup.
 405          */
 406
 407         return (0);
 408 }
 409
 410 /*
 411  * Outer subroutine:
 412  * Connect from a socket to a specified address.
 413  * Both address and port must be specified in argument sin.
 414  * If don't have a local address for this socket yet,
 415  * then pick one.
 416  */
 417 int
 418 in6_pcbconnect_mbuf(struct inpcb *inp, struct sockaddr *nam,
 419     struct ucred *cred, struct mbuf *m, bool rehash)
 420 {
 421         struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
 422         struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
 423         struct sockaddr_in6 laddr6;
 424         int error;
 425
 426         KASSERT(sin6->sin6_family == AF_INET6,
 427             ("%s: invalid address family for %p", __func__, sin6));
 428         KASSERT(sin6->sin6_len == sizeof(*sin6),
 429             ("%s: invalid address length for %p", __func__, sin6));
 430
 431         bzero(&laddr6, sizeof(laddr6));
 432         laddr6.sin6_family = AF_INET6;
 433
 434         INP_WLOCK_ASSERT(inp);
 435         INP_HASH_WLOCK_ASSERT(pcbinfo);
 436
 437 #ifdef ROUTE_MPATH
 438         if (CALC_FLOWID_OUTBOUND) {
 439                 uint32_t hash_type, hash_val;
 440
 441                 hash_val = fib6_calc_software_hash(&inp->in6p_laddr,
 442                     &sin6->sin6_addr, 0, sin6->sin6_port,
 443                     inp->inp_socket->so_proto->pr_protocol, &hash_type);
 444                 inp->inp_flowid = hash_val;
 445                 inp->inp_flowtype = hash_type;
 446         }
 447 #endif
 448         /*
 449          * Call inner routine, to assign local interface address.
 450          * in6_pcbladdr() may automatically fill in sin6_scope_id.
 451          */
 452         if ((error = in6_pcbladdr(inp, sin6, &laddr6.sin6_addr)) != 0)
 453                 return (error);
 454
 455         if (in6_pcblookup_hash_locked(pcbinfo, &sin6->sin6_addr,
 456                                sin6->sin6_port,
 457                               IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)
 458                               ? &laddr6.sin6_addr : &inp->in6p_laddr,
 459                               inp->inp_lport, 0, NULL, M_NODOM) != NULL) {
 460                 return (EADDRINUSE);
 461         }
 462         if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
 463                 if (inp->inp_lport == 0) {
 464                         /*
 465                          * rehash was required to be true in the past for
 466                          * this case; retain that convention.  However,
 467                          * we now call in_pcb_lport_dest rather than
 468                          * in6_pcbbind; the former does not insert into
 469                          * the hash table, the latter does.  Change rehash
 470                          * to false to do the in_pcbinshash below.
 471                          */
 472                         KASSERT(rehash == true,
 473                             ("Rehashing required for unbound inps"));
 474                         rehash = false;
 475                         error = in_pcb_lport_dest(inp,
 476                             (struct sockaddr *) &laddr6, &inp->inp_lport,
 477                             (struct sockaddr *) sin6, sin6->sin6_port, cred,
 478                             INPLOOKUP_WILDCARD);
 479                         if (error)
 480                                 return (error);
 481                 }
 482                 inp->in6p_laddr = laddr6.sin6_addr;
 483         }
 484         inp->in6p_faddr = sin6->sin6_addr;
 485         inp->inp_fport = sin6->sin6_port;
 486         /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
 487         inp->inp_flow &= ~IPV6_FLOWLABEL_MASK;
 488         if (inp->inp_flags & IN6P_AUTOFLOWLABEL)
 489                 inp->inp_flow |=
 490                     (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK);
 491
 492         if (rehash) {
 493                 in_pcbrehash(inp);
 494         } else {
 495                 in_pcbinshash(inp);
 496         }
 497
 498         return (0);
 499 }
 500
 501 int
 502 in6_pcbconnect(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
 503 {
 504
 505         return (in6_pcbconnect_mbuf(inp, nam, cred, NULL, true));
 506 }
 507
 508 void
 509 in6_pcbdisconnect(struct inpcb *inp)
 510 {
 511
 512         INP_WLOCK_ASSERT(inp);
 513         INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
 514
 515         bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr));
 516         inp->inp_fport = 0;
 517         /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
 518         inp->inp_flow &= ~IPV6_FLOWLABEL_MASK;
 519         in_pcbrehash(inp);
 520 }
 521
 522 struct sockaddr *
 523 in6_sockaddr(in_port_t port, struct in6_addr *addr_p)
 524 {
 525         struct sockaddr_in6 *sin6;
 526
 527         sin6 = malloc(sizeof *sin6, M_SONAME, M_WAITOK);
 528         bzero(sin6, sizeof *sin6);
 529         sin6->sin6_family = AF_INET6;
 530         sin6->sin6_len = sizeof(*sin6);
 531         sin6->sin6_port = port;
 532         sin6->sin6_addr = *addr_p;
 533         (void)sa6_recoverscope(sin6); /* XXX: should catch errors */
 534
 535         return (struct sockaddr *)sin6;
 536 }
 537
 538 struct sockaddr *
 539 in6_v4mapsin6_sockaddr(in_port_t port, struct in_addr *addr_p)
 540 {
 541         struct sockaddr_in sin;
 542         struct sockaddr_in6 *sin6_p;
 543
 544         bzero(&sin, sizeof sin);
 545         sin.sin_family = AF_INET;
 546         sin.sin_len = sizeof(sin);
 547         sin.sin_port = port;
 548         sin.sin_addr = *addr_p;
 549
 550         sin6_p = malloc(sizeof *sin6_p, M_SONAME,
 551                 M_WAITOK);
 552         in6_sin_2_v4mapsin6(&sin, sin6_p);
 553
 554         return (struct sockaddr *)sin6_p;
 555 }
 556
 557 int
 558 in6_getsockaddr(struct socket *so, struct sockaddr **nam)
 559 {
 560         struct inpcb *inp;
 561         struct in6_addr addr;
 562         in_port_t port;
 563
 564         inp = sotoinpcb(so);
 565         KASSERT(inp != NULL, ("in6_getsockaddr: inp == NULL"));
 566
 567         INP_RLOCK(inp);
 568         port = inp->inp_lport;
 569         addr = inp->in6p_laddr;
 570         INP_RUNLOCK(inp);
 571
 572         *nam = in6_sockaddr(port, &addr);
 573         return 0;
 574 }
 575
 576 int
 577 in6_getpeeraddr(struct socket *so, struct sockaddr **nam)
 578 {
 579         struct inpcb *inp;
 580         struct in6_addr addr;
 581         in_port_t port;
 582
 583         inp = sotoinpcb(so);
 584         KASSERT(inp != NULL, ("in6_getpeeraddr: inp == NULL"));
 585
 586         INP_RLOCK(inp);
 587         port = inp->inp_fport;
 588         addr = inp->in6p_faddr;
 589         INP_RUNLOCK(inp);
 590
 591         *nam = in6_sockaddr(port, &addr);
 592         return 0;
 593 }
 594
 595 int
 596 in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam)
 597 {
 598         struct  inpcb *inp;
 599         int     error;
 600
 601         inp = sotoinpcb(so);
 602         KASSERT(inp != NULL, ("in6_mapped_sockaddr: inp == NULL"));
 603
 604 #ifdef INET
 605         if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) {
 606                 error = in_getsockaddr(so, nam);
 607                 if (error == 0)
 608                         in6_sin_2_v4mapsin6_in_sock(nam);
 609         } else
 610 #endif
 611         {
 612                 /* scope issues will be handled in in6_getsockaddr(). */
 613                 error = in6_getsockaddr(so, nam);
 614         }
 615
 616         return error;
 617 }
 618
 619 int
 620 in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam)
 621 {
 622         struct  inpcb *inp;
 623         int     error;
 624
 625         inp = sotoinpcb(so);
 626         KASSERT(inp != NULL, ("in6_mapped_peeraddr: inp == NULL"));
 627
 628 #ifdef INET
 629         if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) {
 630                 error = in_getpeeraddr(so, nam);
 631                 if (error == 0)
 632                         in6_sin_2_v4mapsin6_in_sock(nam);
 633         } else
 634 #endif
 635         /* scope issues will be handled in in6_getpeeraddr(). */
 636         error = in6_getpeeraddr(so, nam);
 637
 638         return error;
 639 }
 640
 641 /*
 642  * Pass some notification to all connections of a protocol
 643  * associated with address dst.  The local address and/or port numbers
 644  * may be specified to limit the search.  The "usual action" will be
 645  * taken, depending on the ctlinput cmd.  The caller must filter any
 646  * cmds that are uninteresting (e.g., no error in the map).
 647  * Call the protocol specific routine (if any) to report
 648  * any errors for each matching socket.
 649  */
 650 static bool
 651 inp_match6(const struct inpcb *inp, void *v __unused)
 652 {
 653
 654         return ((inp->inp_vflag & INP_IPV6) != 0);
 655 }
 656
 657 void
 658 in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr_in6 *sa6_dst,
 659     u_int fport_arg, const struct sockaddr_in6 *src, u_int lport_arg,
 660     int errno, void *cmdarg,
 661     struct inpcb *(*notify)(struct inpcb *, int))
 662 {
 663         struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_WLOCKPCB,
 664             inp_match6, NULL);
 665         struct inpcb *inp;
 666         struct sockaddr_in6 sa6_src;
 667         u_short fport = fport_arg, lport = lport_arg;
 668         u_int32_t flowinfo;
 669
 670         if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr))
 671                 return;
 672
 673         /*
 674          * note that src can be NULL when we get notify by local fragmentation.
 675          */
 676         sa6_src = (src == NULL) ? sa6_any : *src;
 677         flowinfo = sa6_src.sin6_flowinfo;
 678
 679         while ((inp = inp_next(&inpi)) != NULL) {
 680                 INP_WLOCK_ASSERT(inp);
 681                 /*
 682                  * If the error designates a new path MTU for a destination
 683                  * and the application (associated with this socket) wanted to
 684                  * know the value, notify.
 685                  * XXX: should we avoid to notify the value to TCP sockets?
 686                  */
 687                 if (errno == EMSGSIZE && cmdarg != NULL)
 688                         ip6_notify_pmtu(inp, sa6_dst, *(uint32_t *)cmdarg);
 689
 690                 /*
 691                  * Detect if we should notify the error. If no source and
 692                  * destination ports are specified, but non-zero flowinfo and
 693                  * local address match, notify the error. This is the case
 694                  * when the error is delivered with an encrypted buffer
 695                  * by ESP. Otherwise, just compare addresses and ports
 696                  * as usual.
 697                  */
 698                 if (lport == 0 && fport == 0 && flowinfo &&
 699                     inp->inp_socket != NULL &&
 700                     flowinfo == (inp->inp_flow & IPV6_FLOWLABEL_MASK) &&
 701                     IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr))
 702                         goto do_notify;
 703                 else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr,
 704                                              &sa6_dst->sin6_addr) ||
 705                          inp->inp_socket == 0 ||
 706                          (lport && inp->inp_lport != lport) ||
 707                          (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) &&
 708                           !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr,
 709                                               &sa6_src.sin6_addr)) ||
 710                          (fport && inp->inp_fport != fport)) {
 711                         continue;
 712                 }
 713
 714           do_notify:
 715                 if (notify)
 716                         (*notify)(inp, errno);
 717         }
 718 }
 719
 720 /*
 721  * Lookup a PCB based on the local address and port.  Caller must hold the
 722  * hash lock.  No inpcb locks or references are acquired.
 723  */
 724 struct inpcb *
 725 in6_pcblookup_local(struct inpcbinfo *pcbinfo, struct in6_addr *laddr,
 726     u_short lport, int lookupflags, struct ucred *cred)
 727 {
 728         struct inpcb *inp;
 729         int matchwild = 3, wildcard;
 730
 731         KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
 732             ("%s: invalid lookup flags %d", __func__, lookupflags));
 733
 734         INP_HASH_LOCK_ASSERT(pcbinfo);
 735
 736         if ((lookupflags & INPLOOKUP_WILDCARD) == 0) {
 737                 struct inpcbhead *head;
 738                 /*
 739                  * Look for an unconnected (wildcard foreign addr) PCB that
 740                  * matches the local address and port we're looking for.
 741                  */
 742                 head = &pcbinfo->ipi_hashbase[INP_PCBHASH_WILD(lport,
 743                     pcbinfo->ipi_hashmask)];
 744                 CK_LIST_FOREACH(inp, head, inp_hash) {
 745                         /* XXX inp locking */
 746                         if ((inp->inp_vflag & INP_IPV6) == 0)
 747                                 continue;
 748                         if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) &&
 749                             IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
 750                             inp->inp_lport == lport) {
 751                                 /* Found. */
 752                                 if (prison_equal_ip6(cred->cr_prison,
 753                                     inp->inp_cred->cr_prison))
 754                                         return (inp);
 755                         }
 756                 }
 757                 /*
 758                  * Not found.
 759                  */
 760                 return (NULL);
 761         } else {
 762                 struct inpcbporthead *porthash;
 763                 struct inpcbport *phd;
 764                 struct inpcb *match = NULL;
 765                 /*
 766                  * Best fit PCB lookup.
 767                  *
 768                  * First see if this local port is in use by looking on the
 769                  * port hash list.
 770                  */
 771                 porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport,
 772                     pcbinfo->ipi_porthashmask)];
 773                 CK_LIST_FOREACH(phd, porthash, phd_hash) {
 774                         if (phd->phd_port == lport)
 775                                 break;
 776                 }
 777                 if (phd != NULL) {
 778                         /*
 779                          * Port is in use by one or more PCBs. Look for best
 780                          * fit.
 781                          */
 782                         CK_LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
 783                                 wildcard = 0;
 784                                 if (!prison_equal_ip6(cred->cr_prison,
 785                                     inp->inp_cred->cr_prison))
 786                                         continue;
 787                                 /* XXX inp locking */
 788                                 if ((inp->inp_vflag & INP_IPV6) == 0)
 789                                         continue;
 790                                 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
 791                                         wildcard++;
 792                                 if (!IN6_IS_ADDR_UNSPECIFIED(
 793                                         &inp->in6p_laddr)) {
 794                                         if (IN6_IS_ADDR_UNSPECIFIED(laddr))
 795                                                 wildcard++;
 796                                         else if (!IN6_ARE_ADDR_EQUAL(
 797                                             &inp->in6p_laddr, laddr))
 798                                                 continue;
 799                                 } else {
 800                                         if (!IN6_IS_ADDR_UNSPECIFIED(laddr))
 801                                                 wildcard++;
 802                                 }
 803                                 if (wildcard < matchwild) {
 804                                         match = inp;
 805                                         matchwild = wildcard;
 806                                         if (matchwild == 0)
 807                                                 break;
 808                                 }
 809                         }
 810                 }
 811                 return (match);
 812         }
 813 }
 814
 815 static bool
 816 in6_multi_match(const struct inpcb *inp, void *v __unused)
 817 {
 818
 819         if ((inp->inp_vflag & INP_IPV6) && inp->in6p_moptions != NULL)
 820                 return (true);
 821         else
 822                 return (false);
 823 }
 824
 825 void
 826 in6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
 827 {
 828         struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_RLOCKPCB,
 829             in6_multi_match, NULL);
 830         struct inpcb *inp;
 831         struct in6_multi *inm;
 832         struct in6_mfilter *imf;
 833         struct ip6_moptions *im6o;
 834
 835         IN6_MULTI_LOCK_ASSERT();
 836
 837         while ((inp = inp_next(&inpi)) != NULL) {
 838                 INP_RLOCK_ASSERT(inp);
 839
 840                 im6o = inp->in6p_moptions;
 841                 /*
 842                  * Unselect the outgoing ifp for multicast if it
 843                  * is being detached.
 844                  */
 845                 if (im6o->im6o_multicast_ifp == ifp)
 846                         im6o->im6o_multicast_ifp = NULL;
 847                 /*
 848                  * Drop multicast group membership if we joined
 849                  * through the interface being detached.
 850                  */
 851 restart:
 852                 IP6_MFILTER_FOREACH(imf, &im6o->im6o_head) {
 853                         if ((inm = imf->im6f_in6m) == NULL)
 854                                 continue;
 855                         if (inm->in6m_ifp != ifp)
 856                                 continue;
 857                         ip6_mfilter_remove(&im6o->im6o_head, imf);
 858                         in6_leavegroup_locked(inm, NULL);
 859                         ip6_mfilter_free(imf);
 860                         goto restart;
 861                 }
 862         }
 863 }
 864
 865 /*
 866  * Check for alternatives when higher level complains
 867  * about service problems.  For now, invalidate cached
 868  * routing information.  If the route was created dynamically
 869  * (by a redirect), time to try a default gateway again.
 870  */
 871 void
 872 in6_losing(struct inpcb *inp)
 873 {
 874
 875         RO_INVALIDATE_CACHE(&inp->inp_route6);
 876 }
 877
 878 /*
 879  * After a routing change, flush old routing
 880  * and allocate a (hopefully) better one.
 881  */
 882 struct inpcb *
 883 in6_rtchange(struct inpcb *inp, int errno __unused)
 884 {
 885
 886         RO_INVALIDATE_CACHE(&inp->inp_route6);
 887         return inp;
 888 }
 889
 890 static bool
 891 in6_pcblookup_lb_numa_match(const struct inpcblbgroup *grp, int domain)
 892 {
 893         return (domain == M_NODOM || domain == grp->il_numa_domain);
 894 }
 895
 896 static struct inpcb *
 897 in6_pcblookup_lbgroup(const struct inpcbinfo *pcbinfo,
 898     const struct in6_addr *laddr, uint16_t lport, const struct in6_addr *faddr,
 899     uint16_t fport, int lookupflags, uint8_t domain)
 900 {
 901         const struct inpcblbgrouphead *hdr;
 902         struct inpcblbgroup *grp;
 903         struct inpcblbgroup *jail_exact, *jail_wild, *local_exact, *local_wild;
 904
 905         INP_HASH_LOCK_ASSERT(pcbinfo);
 906
 907         hdr = &pcbinfo->ipi_lbgrouphashbase[
 908             INP_PCBPORTHASH(lport, pcbinfo->ipi_lbgrouphashmask)];
 909
 910         /*
 911          * Search for an LB group match based on the following criteria:
 912          * - prefer jailed groups to non-jailed groups
 913          * - prefer exact source address matches to wildcard matches
 914          * - prefer groups bound to the specified NUMA domain
 915          */
 916         jail_exact = jail_wild = local_exact = local_wild = NULL;
 917         CK_LIST_FOREACH(grp, hdr, il_list) {
 918                 bool injail;
 919
 920 #ifdef INET
 921                 if (!(grp->il_vflag & INP_IPV6))
 922                         continue;
 923 #endif
 924                 if (grp->il_lport != lport)
 925                         continue;
 926
 927                 injail = prison_flag(grp->il_cred, PR_IP6) != 0;
 928                 if (injail && prison_check_ip6_locked(grp->il_cred->cr_prison,
 929                     laddr) != 0)
 930                         continue;
 931
 932                 if (IN6_ARE_ADDR_EQUAL(&grp->il6_laddr, laddr)) {
 933                         if (injail) {
 934                                 jail_exact = grp;
 935                                 if (in6_pcblookup_lb_numa_match(grp, domain))
 936                                         /* This is a perfect match. */
 937                                         goto out;
 938                         } else if (local_exact == NULL ||
 939                             in6_pcblookup_lb_numa_match(grp, domain)) {
 940                                 local_exact = grp;
 941                         }
 942                 } else if (IN6_IS_ADDR_UNSPECIFIED(&grp->il6_laddr) &&
 943                     (lookupflags & INPLOOKUP_WILDCARD) != 0) {
 944                         if (injail) {
 945                                 if (jail_wild == NULL ||
 946                                     in6_pcblookup_lb_numa_match(grp, domain))
 947                                         jail_wild = grp;
 948                         } else if (local_wild == NULL ||
 949                             in6_pcblookup_lb_numa_match(grp, domain)) {
 950                                 local_wild = grp;
 951                         }
 952                 }
 953         }
 954
 955         if (jail_exact != NULL)
 956                 grp = jail_exact;
 957         else if (jail_wild != NULL)
 958                 grp = jail_wild;
 959         else if (local_exact != NULL)
 960                 grp = local_exact;
 961         else
 962                 grp = local_wild;
 963         if (grp == NULL)
 964                 return (NULL);
 965 out:
 966         return (grp->il_inp[INP6_PCBLBGROUP_PKTHASH(faddr, lport, fport) %
 967             grp->il_inpcnt]);
 968 }
 969
 970 /*
 971  * Lookup PCB in hash list.  Used in in_pcb.c as well as here.
 972  */
 973 struct inpcb *
 974 in6_pcblookup_hash_locked(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
 975     u_int fport_arg, struct in6_addr *laddr, u_int lport_arg,
 976     int lookupflags, struct ifnet *ifp, uint8_t numa_domain)
 977 {
 978         struct inpcbhead *head;
 979         struct inpcb *inp, *tmpinp;
 980         u_short fport = fport_arg, lport = lport_arg;
 981
 982         KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
 983             ("%s: invalid lookup flags %d", __func__, lookupflags));
 984
 985         INP_HASH_LOCK_ASSERT(pcbinfo);
 986
 987         /*
 988          * First look for an exact match.
 989          */
 990         tmpinp = NULL;
 991         head = &pcbinfo->ipi_hashbase[INP6_PCBHASH(faddr, lport, fport,
 992             pcbinfo->ipi_hashmask)];
 993         CK_LIST_FOREACH(inp, head, inp_hash) {
 994                 /* XXX inp locking */
 995                 if ((inp->inp_vflag & INP_IPV6) == 0)
 996                         continue;
 997                 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) &&
 998                     IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
 999                     inp->inp_fport == fport &&
1000                     inp->inp_lport == lport) {
1001                         /*
1002                          * XXX We should be able to directly return
1003                          * the inp here, without any checks.
1004                          * Well unless both bound with SO_REUSEPORT?
1005                          */
1006                         if (prison_flag(inp->inp_cred, PR_IP6))
1007                                 return (inp);
1008                         if (tmpinp == NULL)
1009                                 tmpinp = inp;
1010                 }
1011         }
1012         if (tmpinp != NULL)
1013                 return (tmpinp);
1014
1015         /*
1016          * Then look for a wildcard match, if requested.
1017          */
1018         if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
1019                 struct inpcb *local_wild = NULL, *local_exact = NULL;
1020                 struct inpcb *jail_wild = NULL;
1021                 int injail;
1022
1023                 /*
1024                  * First see if an LB group matches the request before scanning
1025                  * all sockets on this port.
1026                  */
1027                 inp = in6_pcblookup_lbgroup(pcbinfo, laddr, lport, faddr,
1028                     fport, lookupflags, numa_domain);
1029                 if (inp != NULL)
1030                         return (inp);
1031
1032                 /*
1033                  * Order of socket selection - we always prefer jails.
1034                  *      1. jailed, non-wild.
1035                  *      2. jailed, wild.
1036                  *      3. non-jailed, non-wild.
1037                  *      4. non-jailed, wild.
1038                  */
1039                 head = &pcbinfo->ipi_hashbase[INP_PCBHASH_WILD(lport,
1040                     pcbinfo->ipi_hashmask)];
1041                 CK_LIST_FOREACH(inp, head, inp_hash) {
1042                         /* XXX inp locking */
1043                         if ((inp->inp_vflag & INP_IPV6) == 0)
1044                                 continue;
1045
1046                         if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
1047                             inp->inp_lport != lport) {
1048                                 continue;
1049                         }
1050
1051                         injail = prison_flag(inp->inp_cred, PR_IP6);
1052                         if (injail) {
1053                                 if (prison_check_ip6_locked(
1054                                     inp->inp_cred->cr_prison, laddr) != 0)
1055                                         continue;
1056                         } else {
1057                                 if (local_exact != NULL)
1058                                         continue;
1059                         }
1060
1061                         if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) {
1062                                 if (injail)
1063                                         return (inp);
1064                                 else
1065                                         local_exact = inp;
1066                         } else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
1067                                 if (injail)
1068                                         jail_wild = inp;
1069                                 else
1070                                         local_wild = inp;
1071                         }
1072                 } /* LIST_FOREACH */
1073
1074                 if (jail_wild != NULL)
1075                         return (jail_wild);
1076                 if (local_exact != NULL)
1077                         return (local_exact);
1078                 if (local_wild != NULL)
1079                         return (local_wild);
1080         } /* if ((lookupflags & INPLOOKUP_WILDCARD) != 0) */
1081
1082         /*
1083          * Not found.
1084          */
1085         return (NULL);
1086 }
1087
1088 /*
1089  * Lookup PCB in hash list, using pcbinfo tables.  This variation locks the
1090  * hash list lock, and will return the inpcb locked (i.e., requires
1091  * INPLOOKUP_LOCKPCB).
1092  */
1093 static struct inpcb *
1094 in6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
1095     u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags,
1096     struct ifnet *ifp, uint8_t numa_domain)
1097 {
1098         struct inpcb *inp;
1099
1100         smr_enter(pcbinfo->ipi_smr);
1101         inp = in6_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport,
1102             lookupflags & INPLOOKUP_WILDCARD, ifp, numa_domain);
1103         if (inp != NULL) {
1104                 if (__predict_false(inp_smr_lock(inp,
1105                     (lookupflags & INPLOOKUP_LOCKMASK)) == false))
1106                         inp = NULL;
1107         } else
1108                 smr_exit(pcbinfo->ipi_smr);
1109
1110         return (inp);
1111 }
1112
1113 /*
1114  * Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf
1115  * from which a pre-calculated hash value may be extracted.
1116  */
1117 struct inpcb *
1118 in6_pcblookup(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, u_int fport,
1119     struct in6_addr *laddr, u_int lport, int lookupflags, struct ifnet *ifp)
1120 {
1121
1122         KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
1123             ("%s: invalid lookup flags %d", __func__, lookupflags));
1124         KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
1125             ("%s: LOCKPCB not set", __func__));
1126
1127         return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
1128             lookupflags, ifp, M_NODOM));
1129 }
1130
1131 struct inpcb *
1132 in6_pcblookup_mbuf(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
1133     u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags,
1134     struct ifnet *ifp, struct mbuf *m)
1135 {
1136
1137         KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
1138             ("%s: invalid lookup flags %d", __func__, lookupflags));
1139         KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
1140             ("%s: LOCKPCB not set", __func__));
1141
1142         return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
1143             lookupflags, ifp, m->m_pkthdr.numa_domain));
1144 }
1145
1146 void
1147 init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m, int srcordst)
1148 {
1149         struct ip6_hdr *ip;
1150
1151         ip = mtod(m, struct ip6_hdr *);
1152         bzero(sin6, sizeof(*sin6));
1153         sin6->sin6_len = sizeof(*sin6);
1154         sin6->sin6_family = AF_INET6;
1155         sin6->sin6_addr = srcordst ? ip->ip6_dst : ip->ip6_src;
1156
1157         (void)sa6_recoverscope(sin6); /* XXX: should catch errors... */
1158
1159         return;
1160 }