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 67#include <sys/cdefs.h> 68#include "opt_inet.h" 69#include "opt_inet6.h" 70#include "opt_ipsec.h" 71#include "opt_route.h" 72#include "opt_rss.h" 73 74#include <sys/hash.h> 75#include <sys/param.h> 76#include <sys/systm.h> 77#include <sys/malloc.h> 78#include <sys/mbuf.h> 79#include <sys/domain.h> 80#include <sys/proc.h> 81#include <sys/protosw.h> 82#include <sys/smr.h> 83#include <sys/socket.h> 84#include <sys/socketvar.h> 85#include <sys/sockio.h> 86#include <sys/errno.h> 87#include <sys/time.h> 88#include <sys/priv.h> 89#include <sys/proc.h> 90#include <sys/jail.h> 91 92#include <vm/uma.h> 93 94#include <net/if.h> 95#include <net/if_var.h> 96#include <net/if_llatbl.h> 97#include <net/if_types.h> 98#include <net/route.h> 99#include <net/route/nhop.h> 100 101#include <netinet/in.h> 102#include <netinet/in_var.h> 103#include <netinet/in_systm.h> 104#include <netinet/ip6.h> 105#include <netinet/ip_var.h> 106 107#include <netinet6/ip6_var.h> 108#include <netinet6/nd6.h> 109#include <netinet/in_pcb.h> 110#include <netinet/in_pcb_var.h> 111#include <netinet6/in6_pcb.h> 112#include <netinet6/in6_fib.h> 113#include <netinet6/scope6_var.h> 114 115int 116in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred) 117{ 118 struct socket *so = inp->inp_socket; 119 u_int16_t lport = 0; 120 int error, lookupflags = 0; 121#ifdef INVARIANTS 122 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 123#endif 124 125 INP_WLOCK_ASSERT(inp); 126 INP_HASH_WLOCK_ASSERT(pcbinfo); 127 128 error = prison_local_ip6(cred, laddr, 129 ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0)); 130 if (error) 131 return(error); 132 133 /* XXX: this is redundant when called from in6_pcbbind */ 134 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0) 135 lookupflags = INPLOOKUP_WILDCARD; 136 137 inp->inp_flags |= INP_ANONPORT; 138 139 error = in_pcb_lport(inp, NULL, &lport, cred, lookupflags); 140 if (error != 0) 141 return (error); 142 143 inp->inp_lport = lport; 144 if (in_pcbinshash(inp) != 0) { 145 inp->in6p_laddr = in6addr_any; 146 inp->inp_lport = 0; 147 return (EAGAIN); 148 } 149 150 return (0); 151} 152 153int 154in6_pcbbind(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred) 155{ 156 struct socket *so = inp->inp_socket; 157 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 158 u_short lport = 0; 159 int error, lookupflags = 0; 160 int reuseport = (so->so_options & SO_REUSEPORT); 161 162 /* 163 * XXX: Maybe we could let SO_REUSEPORT_LB set SO_REUSEPORT bit here 164 * so that we don't have to add to the (already messy) code below. 165 */ 166 int reuseport_lb = (so->so_options & SO_REUSEPORT_LB); 167 168 INP_WLOCK_ASSERT(inp); 169 INP_HASH_WLOCK_ASSERT(pcbinfo); 170 171 if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 172 return (EINVAL); 173 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0) 174 lookupflags = INPLOOKUP_WILDCARD; 175 if (sin6 == NULL) { 176 if ((error = prison_local_ip6(cred, &inp->in6p_laddr, 177 ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0) 178 return (error); 179 } else { 180 KASSERT(sin6->sin6_family == AF_INET6, 181 ("%s: invalid address family for %p", __func__, sin6)); 182 KASSERT(sin6->sin6_len == sizeof(*sin6), 183 ("%s: invalid address length for %p", __func__, sin6)); 184 185 if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0) 186 return(error); 187 188 if ((error = prison_local_ip6(cred, &sin6->sin6_addr, 189 ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0) 190 return (error); 191 192 lport = sin6->sin6_port; 193 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 194 /* 195 * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 196 * allow compepte duplication of binding if 197 * SO_REUSEPORT is set, or if SO_REUSEADDR is set 198 * and a multicast address is bound on both 199 * new and duplicated sockets. 200 */ 201 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0) 202 reuseport = SO_REUSEADDR|SO_REUSEPORT; 203 /* 204 * XXX: How to deal with SO_REUSEPORT_LB here? 205 * Treat same as SO_REUSEPORT for now. 206 */ 207 if ((so->so_options & 208 (SO_REUSEADDR|SO_REUSEPORT_LB)) != 0) 209 reuseport_lb = SO_REUSEADDR|SO_REUSEPORT_LB; 210 } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 211 struct epoch_tracker et; 212 struct ifaddr *ifa; 213 214 sin6->sin6_port = 0; /* yech... */ 215 NET_EPOCH_ENTER(et); 216 if ((ifa = ifa_ifwithaddr((struct sockaddr *)sin6)) == 217 NULL && 218 (inp->inp_flags & INP_BINDANY) == 0) { 219 NET_EPOCH_EXIT(et); 220 return (EADDRNOTAVAIL); 221 } 222 223 /* 224 * XXX: bind to an anycast address might accidentally 225 * cause sending a packet with anycast source address. 226 * We should allow to bind to a deprecated address, since 227 * the application dares to use it. 228 */ 229 if (ifa != NULL && 230 ((struct in6_ifaddr *)ifa)->ia6_flags & 231 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) { 232 NET_EPOCH_EXIT(et); 233 return (EADDRNOTAVAIL); 234 } 235 NET_EPOCH_EXIT(et); 236 } 237 if (lport) { 238 struct inpcb *t; 239 240 /* GROSS */ 241 if (ntohs(lport) <= V_ipport_reservedhigh && 242 ntohs(lport) >= V_ipport_reservedlow && 243 priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT)) 244 return (EACCES); 245 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) && 246 priv_check_cred(inp->inp_cred, PRIV_NETINET_REUSEPORT) != 0) { 247 t = in6_pcblookup_local(pcbinfo, 248 &sin6->sin6_addr, lport, 249 INPLOOKUP_WILDCARD, cred); 250 if (t != NULL && 251 (so->so_type != SOCK_STREAM || 252 IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) && 253 (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 254 !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) || 255 (t->inp_socket->so_options & SO_REUSEPORT) || 256 (t->inp_socket->so_options & SO_REUSEPORT_LB) == 0) && 257 (inp->inp_cred->cr_uid != 258 t->inp_cred->cr_uid)) 259 return (EADDRINUSE); 260 261#ifdef INET 262 if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 263 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 264 struct sockaddr_in sin; 265 266 in6_sin6_2_sin(&sin, sin6); 267 t = in_pcblookup_local(pcbinfo, 268 sin.sin_addr, lport, 269 INPLOOKUP_WILDCARD, cred); 270 if (t != NULL && 271 (so->so_type != SOCK_STREAM || 272 ntohl(t->inp_faddr.s_addr) == 273 INADDR_ANY) && 274 (inp->inp_cred->cr_uid != 275 t->inp_cred->cr_uid)) 276 return (EADDRINUSE); 277 } 278#endif 279 } 280 t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr, 281 lport, lookupflags, cred); 282 if (t && (reuseport & t->inp_socket->so_options) == 0 && 283 (reuseport_lb & t->inp_socket->so_options) == 0) { 284 return (EADDRINUSE); 285 } 286#ifdef INET 287 if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 288 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 289 struct sockaddr_in sin; 290 291 in6_sin6_2_sin(&sin, sin6); 292 t = in_pcblookup_local(pcbinfo, sin.sin_addr, 293 lport, lookupflags, cred); 294 if (t && 295 (reuseport & t->inp_socket->so_options) == 0 && 296 (reuseport_lb & t->inp_socket->so_options) == 0 && 297 (ntohl(t->inp_laddr.s_addr) != INADDR_ANY || 298 (t->inp_vflag & INP_IPV6PROTO) != 0)) { 299 return (EADDRINUSE); 300 } 301 } 302#endif 303 } 304 inp->in6p_laddr = sin6->sin6_addr; 305 } 306 if (lport == 0) { 307 if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) { 308 /* Undo an address bind that may have occurred. */ 309 inp->in6p_laddr = in6addr_any; 310 return (error); 311 } 312 } else { 313 inp->inp_lport = lport; 314 if (in_pcbinshash(inp) != 0) { 315 inp->in6p_laddr = in6addr_any; 316 inp->inp_lport = 0; 317 return (EAGAIN); 318 } 319 } 320 return (0); 321} 322 323/* 324 * Transform old in6_pcbconnect() into an inner subroutine for new 325 * in6_pcbconnect(): Do some validity-checking on the remote 326 * address (in mbuf 'nam') and then determine local host address 327 * (i.e., which interface) to use to access that remote host. 328 * 329 * This preserves definition of in6_pcbconnect(), while supporting a 330 * slightly different version for T/TCP. (This is more than 331 * a bit of a kludge, but cleaning up the internal interfaces would 332 * have forced minor changes in every protocol). 333 */ 334static int 335in6_pcbladdr(struct inpcb *inp, struct sockaddr_in6 *sin6, 336 struct in6_addr *plocal_addr6, bool sas_required) 337{ 338 int error = 0; 339 int scope_ambiguous = 0; 340 struct in6_addr in6a; 341 342 NET_EPOCH_ASSERT(); 343 INP_WLOCK_ASSERT(inp); 344 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); /* XXXRW: why? */ 345 346 if (sin6->sin6_port == 0) 347 return (EADDRNOTAVAIL); 348 349 if (sin6->sin6_scope_id == 0 && !V_ip6_use_defzone) 350 scope_ambiguous = 1; 351 if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0) 352 return(error); 353 354 if (!CK_STAILQ_EMPTY(&V_in6_ifaddrhead)) { 355 /* 356 * If the destination address is UNSPECIFIED addr, 357 * use the loopback addr, e.g ::1. 358 */ 359 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 360 sin6->sin6_addr = in6addr_loopback; 361 } 362 if ((error = prison_remote_ip6(inp->inp_cred, &sin6->sin6_addr)) != 0) 363 return (error); 364 365 if (sas_required) { 366 error = in6_selectsrc_socket(sin6, inp->in6p_outputopts, 367 inp, inp->inp_cred, scope_ambiguous, &in6a, NULL); 368 if (error) 369 return (error); 370 } else { 371 /* 372 * Source address selection isn't required when syncache 373 * has already established connection and both source and 374 * destination addresses was chosen. 375 * 376 * This also includes the case when fwd_tag was used to 377 * select source address in tcp_input(). 378 */ 379 in6a = inp->in6p_laddr; 380 } 381 382 if (IN6_IS_ADDR_UNSPECIFIED(&in6a)) 383 return (EHOSTUNREACH); 384 /* 385 * Do not update this earlier, in case we return with an error. 386 * 387 * XXX: this in6_selectsrc_socket result might replace the bound local 388 * address with the address specified by setsockopt(IPV6_PKTINFO). 389 * Is it the intended behavior? 390 */ 391 *plocal_addr6 = in6a; 392 393 /* 394 * Don't do pcblookup call here; return interface in 395 * plocal_addr6 396 * and exit to caller, that will do the lookup. 397 */ 398 399 return (0); 400} 401 402/* 403 * Outer subroutine: 404 * Connect from a socket to a specified address. 405 * Both address and port must be specified in argument sin. 406 * If don't have a local address for this socket yet, 407 * then pick one. 408 */ 409int 410in6_pcbconnect(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred, 411 bool sas_required) 412{ 413 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 414 struct sockaddr_in6 laddr6; 415 int error; 416 417 NET_EPOCH_ASSERT(); 418 INP_WLOCK_ASSERT(inp); 419 INP_HASH_WLOCK_ASSERT(pcbinfo); 420 KASSERT(sin6->sin6_family == AF_INET6, 421 ("%s: invalid address family for %p", __func__, sin6)); 422 KASSERT(sin6->sin6_len == sizeof(*sin6), 423 ("%s: invalid address length for %p", __func__, sin6)); 424 KASSERT(IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr), 425 ("%s: inp is already connected", __func__)); 426 427 bzero(&laddr6, sizeof(laddr6)); 428 laddr6.sin6_family = AF_INET6; 429 430#ifdef ROUTE_MPATH 431 if (CALC_FLOWID_OUTBOUND) { 432 uint32_t hash_type, hash_val; 433 434 hash_val = fib6_calc_software_hash(&inp->in6p_laddr, 435 &sin6->sin6_addr, 0, sin6->sin6_port, 436 inp->inp_socket->so_proto->pr_protocol, &hash_type); 437 inp->inp_flowid = hash_val; 438 inp->inp_flowtype = hash_type; 439 } 440#endif 441 /* 442 * Call inner routine, to assign local interface address. 443 * in6_pcbladdr() may automatically fill in sin6_scope_id. 444 */ 445 if ((error = in6_pcbladdr(inp, sin6, &laddr6.sin6_addr, 446 sas_required)) != 0) 447 return (error); 448 449 if (in6_pcblookup_hash_locked(pcbinfo, &sin6->sin6_addr, 450 sin6->sin6_port, IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) ? 451 &laddr6.sin6_addr : &inp->in6p_laddr, inp->inp_lport, 0, 452 M_NODOM) != NULL) 453 return (EADDRINUSE); 454 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) { 455 if (inp->inp_lport == 0) { 456 error = in_pcb_lport_dest(inp, 457 (struct sockaddr *) &laddr6, &inp->inp_lport, 458 (struct sockaddr *) sin6, sin6->sin6_port, cred, 459 INPLOOKUP_WILDCARD); 460 if (error) 461 return (error); 462 } 463 inp->in6p_laddr = laddr6.sin6_addr; 464 } 465 inp->in6p_faddr = sin6->sin6_addr; 466 inp->inp_fport = sin6->sin6_port; 467 /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 468 inp->inp_flow &= ~IPV6_FLOWLABEL_MASK; 469 if (inp->inp_flags & IN6P_AUTOFLOWLABEL) 470 inp->inp_flow |= 471 (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK); 472 473 if ((inp->inp_flags & INP_INHASHLIST) != 0) { 474 in_pcbrehash(inp); 475 } else { 476 in_pcbinshash(inp); 477 } 478 479 return (0); 480} 481 482void 483in6_pcbdisconnect(struct inpcb *inp) 484{ 485 486 INP_WLOCK_ASSERT(inp); 487 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); 488 KASSERT(inp->inp_smr == SMR_SEQ_INVALID, 489 ("%s: inp %p was already disconnected", __func__, inp)); 490 491 in_pcbremhash_locked(inp); 492 493 /* See the comment in in_pcbinshash(). */ 494 inp->inp_smr = smr_advance(inp->inp_pcbinfo->ipi_smr); 495 496 /* XXX-MJ torn writes are visible to SMR lookup */ 497 memset(&inp->in6p_laddr, 0, sizeof(inp->in6p_laddr)); 498 memset(&inp->in6p_faddr, 0, sizeof(inp->in6p_faddr)); 499 inp->inp_fport = 0; 500 /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 501 inp->inp_flow &= ~IPV6_FLOWLABEL_MASK; 502} 503 504int 505in6_getsockaddr(struct socket *so, struct sockaddr *sa) 506{ 507 struct inpcb *inp; 508 509 inp = sotoinpcb(so); 510 KASSERT(inp != NULL, ("in6_getsockaddr: inp == NULL")); 511 512 *(struct sockaddr_in6 *)sa = (struct sockaddr_in6 ){ 513 .sin6_len = sizeof(struct sockaddr_in6), 514 .sin6_family = AF_INET6, 515 .sin6_port = inp->inp_lport, 516 .sin6_addr = inp->in6p_laddr, 517 }; 518 /* XXX: should catch errors */ 519 (void)sa6_recoverscope((struct sockaddr_in6 *)sa); 520 521 return (0); 522} 523 524int 525in6_getpeeraddr(struct socket *so, struct sockaddr *sa) 526{ 527 struct inpcb *inp; 528 529 inp = sotoinpcb(so); 530 KASSERT(inp != NULL, ("in6_getpeeraddr: inp == NULL")); 531 532 *(struct sockaddr_in6 *)sa = (struct sockaddr_in6 ){ 533 .sin6_len = sizeof(struct sockaddr_in6), 534 .sin6_family = AF_INET6, 535 .sin6_port = inp->inp_fport, 536 .sin6_addr = inp->in6p_faddr, 537 }; 538 /* XXX: should catch errors */ 539 (void)sa6_recoverscope((struct sockaddr_in6 *)sa); 540 541 return (0); 542} 543 544int 545in6_mapped_sockaddr(struct socket *so, struct sockaddr *sa) 546{ 547 int error; 548#ifdef INET 549 struct inpcb *inp; 550 551 inp = sotoinpcb(so); 552 KASSERT(inp != NULL, ("in6_mapped_sockaddr: inp == NULL")); 553 554 if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 555 struct sockaddr_in sin; 556 557 error = in_getsockaddr(so, (struct sockaddr *)&sin); 558 if (error == 0) 559 in6_sin_2_v4mapsin6(&sin, (struct sockaddr_in6 *)sa); 560 } else 561#endif 562 { 563 /* scope issues will be handled in in6_getsockaddr(). */ 564 error = in6_getsockaddr(so, sa); 565 } 566 567 return error; 568} 569 570int 571in6_mapped_peeraddr(struct socket *so, struct sockaddr *sa) 572{ 573 int error; 574#ifdef INET 575 struct inpcb *inp; 576 577 inp = sotoinpcb(so); 578 KASSERT(inp != NULL, ("in6_mapped_peeraddr: inp == NULL")); 579 580 if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 581 struct sockaddr_in sin; 582 583 error = in_getpeeraddr(so, (struct sockaddr *)&sin); 584 if (error == 0) 585 in6_sin_2_v4mapsin6(&sin, (struct sockaddr_in6 *)sa); 586 } else 587#endif 588 { 589 /* scope issues will be handled in in6_getpeeraddr(). */ 590 error = in6_getpeeraddr(so, sa); 591 } 592 593 return error; 594} 595 596/* 597 * Pass some notification to all connections of a protocol 598 * associated with address dst. The local address and/or port numbers 599 * may be specified to limit the search. The "usual action" will be 600 * taken, depending on the ctlinput cmd. The caller must filter any 601 * cmds that are uninteresting (e.g., no error in the map). 602 * Call the protocol specific routine (if any) to report 603 * any errors for each matching socket. 604 */ 605static bool 606inp_match6(const struct inpcb *inp, void *v __unused) 607{ 608 609 return ((inp->inp_vflag & INP_IPV6) != 0); 610} 611 612void 613in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr_in6 *sa6_dst, 614 u_int fport_arg, const struct sockaddr_in6 *src, u_int lport_arg, 615 int errno, void *cmdarg, 616 struct inpcb *(*notify)(struct inpcb *, int)) 617{ 618 struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_WLOCKPCB, 619 inp_match6, NULL); 620 struct inpcb *inp; 621 struct sockaddr_in6 sa6_src; 622 u_short fport = fport_arg, lport = lport_arg; 623 u_int32_t flowinfo; 624 625 if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr)) 626 return; 627 628 /* 629 * note that src can be NULL when we get notify by local fragmentation. 630 */ 631 sa6_src = (src == NULL) ? sa6_any : *src; 632 flowinfo = sa6_src.sin6_flowinfo; 633 634 while ((inp = inp_next(&inpi)) != NULL) { 635 INP_WLOCK_ASSERT(inp); 636 /* 637 * If the error designates a new path MTU for a destination 638 * and the application (associated with this socket) wanted to 639 * know the value, notify. 640 * XXX: should we avoid to notify the value to TCP sockets? 641 */ 642 if (errno == EMSGSIZE && cmdarg != NULL) 643 ip6_notify_pmtu(inp, sa6_dst, *(uint32_t *)cmdarg); 644 645 /* 646 * Detect if we should notify the error. If no source and 647 * destination ports are specified, but non-zero flowinfo and 648 * local address match, notify the error. This is the case 649 * when the error is delivered with an encrypted buffer 650 * by ESP. Otherwise, just compare addresses and ports 651 * as usual. 652 */ 653 if (lport == 0 && fport == 0 && flowinfo && 654 inp->inp_socket != NULL && 655 flowinfo == (inp->inp_flow & IPV6_FLOWLABEL_MASK) && 656 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr)) 657 goto do_notify; 658 else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, 659 &sa6_dst->sin6_addr) || 660 inp->inp_socket == 0 || 661 (lport && inp->inp_lport != lport) || 662 (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) && 663 !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 664 &sa6_src.sin6_addr)) || 665 (fport && inp->inp_fport != fport)) { 666 continue; 667 } 668 669 do_notify: 670 if (notify) 671 (*notify)(inp, errno); 672 } 673} 674 675/* 676 * Lookup a PCB based on the local address and port. Caller must hold the 677 * hash lock. No inpcb locks or references are acquired. 678 */ 679struct inpcb * 680in6_pcblookup_local(struct inpcbinfo *pcbinfo, struct in6_addr *laddr, 681 u_short lport, int lookupflags, struct ucred *cred) 682{ 683 struct inpcb *inp; 684 int matchwild = 3, wildcard; 685 686 KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0, 687 ("%s: invalid lookup flags %d", __func__, lookupflags)); 688 689 INP_HASH_LOCK_ASSERT(pcbinfo); 690 691 if ((lookupflags & INPLOOKUP_WILDCARD) == 0) { 692 struct inpcbhead *head; 693 /* 694 * Look for an unconnected (wildcard foreign addr) PCB that 695 * matches the local address and port we're looking for. 696 */ 697 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 698 pcbinfo->ipi_hashmask)]; 699 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 700 /* XXX inp locking */ 701 if ((inp->inp_vflag & INP_IPV6) == 0) 702 continue; 703 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 704 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 705 inp->inp_lport == lport) { 706 /* Found. */ 707 if (prison_equal_ip6(cred->cr_prison, 708 inp->inp_cred->cr_prison)) 709 return (inp); 710 } 711 } 712 /* 713 * Not found. 714 */ 715 return (NULL); 716 } else { 717 struct inpcbporthead *porthash; 718 struct inpcbport *phd; 719 struct inpcb *match = NULL; 720 /* 721 * Best fit PCB lookup. 722 * 723 * First see if this local port is in use by looking on the 724 * port hash list. 725 */ 726 porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport, 727 pcbinfo->ipi_porthashmask)]; 728 CK_LIST_FOREACH(phd, porthash, phd_hash) { 729 if (phd->phd_port == lport) 730 break; 731 } 732 if (phd != NULL) { 733 /* 734 * Port is in use by one or more PCBs. Look for best 735 * fit. 736 */ 737 CK_LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) { 738 wildcard = 0; 739 if (!prison_equal_ip6(cred->cr_prison, 740 inp->inp_cred->cr_prison)) 741 continue; 742 /* XXX inp locking */ 743 if ((inp->inp_vflag & INP_IPV6) == 0) 744 continue; 745 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) 746 wildcard++; 747 if (!IN6_IS_ADDR_UNSPECIFIED( 748 &inp->in6p_laddr)) { 749 if (IN6_IS_ADDR_UNSPECIFIED(laddr)) 750 wildcard++; 751 else if (!IN6_ARE_ADDR_EQUAL( 752 &inp->in6p_laddr, laddr)) 753 continue; 754 } else { 755 if (!IN6_IS_ADDR_UNSPECIFIED(laddr)) 756 wildcard++; 757 } 758 if (wildcard < matchwild) { 759 match = inp; 760 matchwild = wildcard; 761 if (matchwild == 0) 762 break; 763 } 764 } 765 } 766 return (match); 767 } 768} 769 770static bool 771in6_multi_match(const struct inpcb *inp, void *v __unused) 772{ 773 774 if ((inp->inp_vflag & INP_IPV6) && inp->in6p_moptions != NULL) 775 return (true); 776 else 777 return (false); 778} 779 780void 781in6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp) 782{ 783 struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_RLOCKPCB, 784 in6_multi_match, NULL); 785 struct inpcb *inp; 786 struct in6_multi *inm; 787 struct in6_mfilter *imf; 788 struct ip6_moptions *im6o; 789 790 IN6_MULTI_LOCK_ASSERT(); 791 792 while ((inp = inp_next(&inpi)) != NULL) { 793 INP_RLOCK_ASSERT(inp); 794 795 im6o = inp->in6p_moptions; 796 /* 797 * Unselect the outgoing ifp for multicast if it 798 * is being detached. 799 */ 800 if (im6o->im6o_multicast_ifp == ifp) 801 im6o->im6o_multicast_ifp = NULL; 802 /* 803 * Drop multicast group membership if we joined 804 * through the interface being detached. 805 */ 806restart: 807 IP6_MFILTER_FOREACH(imf, &im6o->im6o_head) { 808 if ((inm = imf->im6f_in6m) == NULL) 809 continue; 810 if (inm->in6m_ifp != ifp) 811 continue; 812 ip6_mfilter_remove(&im6o->im6o_head, imf); 813 in6_leavegroup_locked(inm, NULL); 814 ip6_mfilter_free(imf); 815 goto restart; 816 } 817 } 818} 819 820/* 821 * Check for alternatives when higher level complains 822 * about service problems. For now, invalidate cached 823 * routing information. If the route was created dynamically 824 * (by a redirect), time to try a default gateway again. 825 */ 826void 827in6_losing(struct inpcb *inp) 828{ 829 830 RO_INVALIDATE_CACHE(&inp->inp_route6); 831} 832 833/* 834 * After a routing change, flush old routing 835 * and allocate a (hopefully) better one. 836 */ 837struct inpcb * 838in6_rtchange(struct inpcb *inp, int errno __unused) 839{ 840 841 RO_INVALIDATE_CACHE(&inp->inp_route6); 842 return inp; 843} 844 845static bool 846in6_pcblookup_lb_numa_match(const struct inpcblbgroup *grp, int domain) 847{ 848 return (domain == M_NODOM || domain == grp->il_numa_domain); 849} 850 851static struct inpcb * 852in6_pcblookup_lbgroup(const struct inpcbinfo *pcbinfo, 853 const struct in6_addr *faddr, uint16_t fport, const struct in6_addr *laddr, 854 uint16_t lport, uint8_t domain) 855{ 856 const struct inpcblbgrouphead *hdr; 857 struct inpcblbgroup *grp; 858 struct inpcblbgroup *jail_exact, *jail_wild, *local_exact, *local_wild; 859 860 INP_HASH_LOCK_ASSERT(pcbinfo); 861 862 hdr = &pcbinfo->ipi_lbgrouphashbase[ 863 INP_PCBPORTHASH(lport, pcbinfo->ipi_lbgrouphashmask)]; 864 865 /* 866 * Search for an LB group match based on the following criteria: 867 * - prefer jailed groups to non-jailed groups 868 * - prefer exact source address matches to wildcard matches 869 * - prefer groups bound to the specified NUMA domain 870 */ 871 jail_exact = jail_wild = local_exact = local_wild = NULL; 872 CK_LIST_FOREACH(grp, hdr, il_list) { 873 bool injail; 874 875#ifdef INET 876 if (!(grp->il_vflag & INP_IPV6)) 877 continue; 878#endif 879 if (grp->il_lport != lport) 880 continue; 881 882 injail = prison_flag(grp->il_cred, PR_IP6) != 0; 883 if (injail && prison_check_ip6_locked(grp->il_cred->cr_prison, 884 laddr) != 0) 885 continue; 886 887 if (IN6_ARE_ADDR_EQUAL(&grp->il6_laddr, laddr)) { 888 if (injail) { 889 jail_exact = grp; 890 if (in6_pcblookup_lb_numa_match(grp, domain)) 891 /* This is a perfect match. */ 892 goto out; 893 } else if (local_exact == NULL || 894 in6_pcblookup_lb_numa_match(grp, domain)) { 895 local_exact = grp; 896 } 897 } else if (IN6_IS_ADDR_UNSPECIFIED(&grp->il6_laddr)) { 898 if (injail) { 899 if (jail_wild == NULL || 900 in6_pcblookup_lb_numa_match(grp, domain)) 901 jail_wild = grp; 902 } else if (local_wild == NULL || 903 in6_pcblookup_lb_numa_match(grp, domain)) { 904 local_wild = grp; 905 } 906 } 907 } 908 909 if (jail_exact != NULL) 910 grp = jail_exact; 911 else if (jail_wild != NULL) 912 grp = jail_wild; 913 else if (local_exact != NULL) 914 grp = local_exact; 915 else 916 grp = local_wild; 917 if (grp == NULL) 918 return (NULL); 919out: 920 return (grp->il_inp[INP6_PCBLBGROUP_PKTHASH(faddr, lport, fport) % 921 grp->il_inpcnt]); 922} 923 924static bool 925in6_pcblookup_exact_match(const struct inpcb *inp, const struct in6_addr *faddr, 926 u_short fport, const struct in6_addr *laddr, u_short lport) 927{ 928 /* XXX inp locking */ 929 if ((inp->inp_vflag & INP_IPV6) == 0) 930 return (false); 931 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) && 932 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 933 inp->inp_fport == fport && inp->inp_lport == lport) 934 return (true); 935 return (false); 936} 937 938static struct inpcb * 939in6_pcblookup_hash_exact(struct inpcbinfo *pcbinfo, 940 const struct in6_addr *faddr, u_short fport, 941 const struct in6_addr *laddr, u_short lport) 942{ 943 struct inpcbhead *head; 944 struct inpcb *inp; 945 946 INP_HASH_LOCK_ASSERT(pcbinfo); 947 948 /* 949 * First look for an exact match. 950 */ 951 head = &pcbinfo->ipi_hash_exact[INP6_PCBHASH(faddr, lport, fport, 952 pcbinfo->ipi_hashmask)]; 953 CK_LIST_FOREACH(inp, head, inp_hash_exact) { 954 if (in6_pcblookup_exact_match(inp, faddr, fport, laddr, lport)) 955 return (inp); 956 } 957 return (NULL); 958} 959 960typedef enum { 961 INPLOOKUP_MATCH_NONE = 0, 962 INPLOOKUP_MATCH_WILD = 1, 963 INPLOOKUP_MATCH_LADDR = 2, 964} inp_lookup_match_t; 965 966static inp_lookup_match_t 967in6_pcblookup_wild_match(const struct inpcb *inp, const struct in6_addr *laddr, 968 u_short lport) 969{ 970 /* XXX inp locking */ 971 if ((inp->inp_vflag & INP_IPV6) == 0) 972 return (INPLOOKUP_MATCH_NONE); 973 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) || 974 inp->inp_lport != lport) 975 return (INPLOOKUP_MATCH_NONE); 976 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 977 return (INPLOOKUP_MATCH_WILD); 978 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) 979 return (INPLOOKUP_MATCH_LADDR); 980 return (INPLOOKUP_MATCH_NONE); 981} 982 983#define INP_LOOKUP_AGAIN ((struct inpcb *)(uintptr_t)-1) 984 985static struct inpcb * 986in6_pcblookup_hash_wild_smr(struct inpcbinfo *pcbinfo, 987 const struct in6_addr *faddr, u_short fport, const struct in6_addr *laddr, 988 u_short lport, const inp_lookup_t lockflags) 989{ 990 struct inpcbhead *head; 991 struct inpcb *inp; 992 993 KASSERT(SMR_ENTERED(pcbinfo->ipi_smr), 994 ("%s: not in SMR read section", __func__)); 995 996 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 997 pcbinfo->ipi_hashmask)]; 998 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 999 inp_lookup_match_t match; 1000 1001 match = in6_pcblookup_wild_match(inp, laddr, lport); 1002 if (match == INPLOOKUP_MATCH_NONE) 1003 continue; 1004 1005 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1006 match = in6_pcblookup_wild_match(inp, laddr, lport); 1007 if (match != INPLOOKUP_MATCH_NONE && 1008 prison_check_ip6_locked(inp->inp_cred->cr_prison, 1009 laddr) == 0) 1010 return (inp); 1011 inp_unlock(inp, lockflags); 1012 } 1013 1014 /* 1015 * The matching socket disappeared out from under us. Fall back 1016 * to a serialized lookup. 1017 */ 1018 return (INP_LOOKUP_AGAIN); 1019 } 1020 return (NULL); 1021} 1022 1023static struct inpcb * 1024in6_pcblookup_hash_wild_locked(struct inpcbinfo *pcbinfo, 1025 const struct in6_addr *faddr, u_short fport, const struct in6_addr *laddr, 1026 u_short lport) 1027{ 1028 struct inpcbhead *head; 1029 struct inpcb *inp, *jail_wild, *local_exact, *local_wild; 1030 1031 INP_HASH_LOCK_ASSERT(pcbinfo); 1032 1033 /* 1034 * Order of socket selection - we always prefer jails. 1035 * 1. jailed, non-wild. 1036 * 2. jailed, wild. 1037 * 3. non-jailed, non-wild. 1038 * 4. non-jailed, wild. 1039 */ 1040 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 1041 pcbinfo->ipi_hashmask)]; 1042 local_wild = local_exact = jail_wild = NULL; 1043 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 1044 inp_lookup_match_t match; 1045 bool injail; 1046 1047 match = in6_pcblookup_wild_match(inp, laddr, lport); 1048 if (match == INPLOOKUP_MATCH_NONE) 1049 continue; 1050 1051 injail = prison_flag(inp->inp_cred, PR_IP6) != 0; 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 (match == INPLOOKUP_MATCH_LADDR) { 1062 if (injail) 1063 return (inp); 1064 else 1065 local_exact = inp; 1066 } else { 1067 if (injail) 1068 jail_wild = inp; 1069 else 1070 local_wild = inp; 1071 } 1072 } 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 return (NULL); 1081} 1082 1083struct inpcb * 1084in6_pcblookup_hash_locked(struct inpcbinfo *pcbinfo, 1085 const struct in6_addr *faddr, u_int fport_arg, 1086 const struct in6_addr *laddr, u_int lport_arg, 1087 int lookupflags, uint8_t numa_domain) 1088{ 1089 struct inpcb *inp; 1090 u_short fport = fport_arg, lport = lport_arg; 1091 1092 KASSERT((lookupflags & ~INPLOOKUP_WILDCARD) == 0, 1093 ("%s: invalid lookup flags %d", __func__, lookupflags)); 1094 KASSERT(!IN6_IS_ADDR_UNSPECIFIED(faddr), 1095 ("%s: invalid foreign address", __func__)); 1096 KASSERT(!IN6_IS_ADDR_UNSPECIFIED(laddr), 1097 ("%s: invalid local address", __func__)); 1098 INP_HASH_LOCK_ASSERT(pcbinfo); 1099 1100 inp = in6_pcblookup_hash_exact(pcbinfo, faddr, fport, laddr, lport); 1101 if (inp != NULL) 1102 return (inp); 1103 1104 if ((lookupflags & INPLOOKUP_WILDCARD) != 0) { 1105 inp = in6_pcblookup_lbgroup(pcbinfo, faddr, fport, laddr, 1106 lport, numa_domain); 1107 if (inp == NULL) { 1108 inp = in6_pcblookup_hash_wild_locked(pcbinfo, faddr, 1109 fport, laddr, lport); 1110 } 1111 } 1112 return (inp); 1113} 1114 1115static struct inpcb * 1116in6_pcblookup_hash(struct inpcbinfo *pcbinfo, const struct in6_addr *faddr, 1117 u_int fport, const struct in6_addr *laddr, u_int lport, int lookupflags, 1118 uint8_t numa_domain) 1119{ 1120 struct inpcb *inp; 1121 const inp_lookup_t lockflags = lookupflags & INPLOOKUP_LOCKMASK; 1122 1123 KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0, 1124 ("%s: LOCKPCB not set", __func__)); 1125 1126 INP_HASH_WLOCK(pcbinfo); 1127 inp = in6_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport, 1128 lookupflags & ~INPLOOKUP_LOCKMASK, numa_domain); 1129 if (inp != NULL && !inp_trylock(inp, lockflags)) { 1130 in_pcbref(inp); 1131 INP_HASH_WUNLOCK(pcbinfo); 1132 inp_lock(inp, lockflags); 1133 if (in_pcbrele(inp, lockflags)) 1134 /* XXX-MJ or retry until we get a negative match? */ 1135 inp = NULL; 1136 } else { 1137 INP_HASH_WUNLOCK(pcbinfo); 1138 } 1139 return (inp); 1140} 1141 1142static struct inpcb * 1143in6_pcblookup_hash_smr(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 1144 u_int fport_arg, struct in6_addr *laddr, u_int lport_arg, int lookupflags, 1145 uint8_t numa_domain) 1146{ 1147 struct inpcb *inp; 1148 const inp_lookup_t lockflags = lookupflags & INPLOOKUP_LOCKMASK; 1149 const u_short fport = fport_arg, lport = lport_arg; 1150 1151 KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0, 1152 ("%s: invalid lookup flags %d", __func__, lookupflags)); 1153 KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0, 1154 ("%s: LOCKPCB not set", __func__)); 1155 1156 smr_enter(pcbinfo->ipi_smr); 1157 inp = in6_pcblookup_hash_exact(pcbinfo, faddr, fport, laddr, lport); 1158 if (inp != NULL) { 1159 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1160 if (__predict_true(in6_pcblookup_exact_match(inp, 1161 faddr, fport, laddr, lport))) 1162 return (inp); 1163 inp_unlock(inp, lockflags); 1164 } 1165 /* 1166 * We failed to lock the inpcb, or its connection state changed 1167 * out from under us. Fall back to a precise search. 1168 */ 1169 return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport, 1170 lookupflags, numa_domain)); 1171 } 1172 1173 if ((lookupflags & INPLOOKUP_WILDCARD) != 0) { 1174 inp = in6_pcblookup_lbgroup(pcbinfo, faddr, fport, 1175 laddr, lport, numa_domain); 1176 if (inp != NULL) { 1177 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1178 if (__predict_true(in6_pcblookup_wild_match(inp, 1179 laddr, lport) != INPLOOKUP_MATCH_NONE)) 1180 return (inp); 1181 inp_unlock(inp, lockflags); 1182 } 1183 inp = INP_LOOKUP_AGAIN; 1184 } else { 1185 inp = in6_pcblookup_hash_wild_smr(pcbinfo, faddr, fport, 1186 laddr, lport, lockflags); 1187 } 1188 if (inp == INP_LOOKUP_AGAIN) { 1189 return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, 1190 lport, lookupflags, numa_domain)); 1191 } 1192 } 1193 1194 if (inp == NULL) 1195 smr_exit(pcbinfo->ipi_smr); 1196 1197 return (inp); 1198} 1199 1200/* 1201 * Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf 1202 * from which a pre-calculated hash value may be extracted. 1203 */ 1204struct inpcb * 1205in6_pcblookup(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, u_int fport, 1206 struct in6_addr *laddr, u_int lport, int lookupflags, 1207 struct ifnet *ifp __unused) 1208{ 1209 return (in6_pcblookup_hash_smr(pcbinfo, faddr, fport, laddr, lport, 1210 lookupflags, M_NODOM)); 1211} 1212 1213struct inpcb * 1214in6_pcblookup_mbuf(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 1215 u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags, 1216 struct ifnet *ifp __unused, struct mbuf *m) 1217{ 1218 return (in6_pcblookup_hash_smr(pcbinfo, faddr, fport, laddr, lport, 1219 lookupflags, m->m_pkthdr.numa_domain)); 1220} 1221 1222void 1223init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m, int srcordst) 1224{ 1225 struct ip6_hdr *ip; 1226 1227 ip = mtod(m, struct ip6_hdr *); 1228 bzero(sin6, sizeof(*sin6)); 1229 sin6->sin6_len = sizeof(*sin6); 1230 sin6->sin6_family = AF_INET6; 1231 sin6->sin6_addr = srcordst ? ip->ip6_dst : ip->ip6_src; 1232 1233 (void)sa6_recoverscope(sin6); /* XXX: should catch errors... */ 1234 1235 return; 1236} 1237