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/proc.h> 85 #include <sys/protosw.h> 86 #include <sys/smr.h> 87 #include <sys/socket.h> 88 #include <sys/socketvar.h> 89 #include <sys/sockio.h> 90 #include <sys/errno.h> 91 #include <sys/time.h> 92 #include <sys/priv.h> 93 #include <sys/proc.h> 94 #include <sys/jail.h> 95 96 #include <vm/uma.h> 97 98 #include <net/if.h> 99 #include <net/if_var.h> 100 #include <net/if_llatbl.h> 101 #include <net/if_types.h> 102 #include <net/route.h> 103 #include <net/route/nhop.h> 104 105 #include <netinet/in.h> 106 #include <netinet/in_var.h> 107 #include <netinet/in_systm.h> 108 #include <netinet/ip6.h> 109 #include <netinet/ip_var.h> 110 111 #include <netinet6/ip6_var.h> 112 #include <netinet6/nd6.h> 113 #include <netinet/in_pcb.h> 114 #include <netinet/in_pcb_var.h> 115 #include <netinet6/in6_pcb.h> 116 #include <netinet6/in6_fib.h> 117 #include <netinet6/scope6_var.h> 118 119 int 120 in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred) 121 { 122 struct socket *so = inp->inp_socket; 123 u_int16_t lport = 0; 124 int error, lookupflags = 0; 125 #ifdef INVARIANTS 126 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 127 #endif 128 129 INP_WLOCK_ASSERT(inp); 130 INP_HASH_WLOCK_ASSERT(pcbinfo); 131 132 error = prison_local_ip6(cred, laddr, 133 ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0)); 134 if (error) 135 return(error); 136 137 /* XXX: this is redundant when called from in6_pcbbind */ 138 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0) 139 lookupflags = INPLOOKUP_WILDCARD; 140 141 inp->inp_flags |= INP_ANONPORT; 142 143 error = in_pcb_lport(inp, NULL, &lport, cred, lookupflags); 144 if (error != 0) 145 return (error); 146 147 inp->inp_lport = lport; 148 if (in_pcbinshash(inp) != 0) { 149 inp->in6p_laddr = in6addr_any; 150 inp->inp_lport = 0; 151 return (EAGAIN); 152 } 153 154 return (0); 155 } 156 157 int 158 in6_pcbbind(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred) 159 { 160 struct socket *so = inp->inp_socket; 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 (sin6 == 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 KASSERT(sin6->sin6_family == AF_INET6, 185 ("%s: invalid address family for %p", __func__, sin6)); 186 KASSERT(sin6->sin6_len == sizeof(*sin6), 187 ("%s: invalid address length for %p", __func__, sin6)); 188 189 if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0) 190 return(error); 191 192 if ((error = prison_local_ip6(cred, &sin6->sin6_addr, 193 ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0) 194 return (error); 195 196 lport = sin6->sin6_port; 197 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 198 /* 199 * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 200 * allow compepte duplication of binding if 201 * SO_REUSEPORT is set, or if SO_REUSEADDR is set 202 * and a multicast address is bound on both 203 * new and duplicated sockets. 204 */ 205 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0) 206 reuseport = SO_REUSEADDR|SO_REUSEPORT; 207 /* 208 * XXX: How to deal with SO_REUSEPORT_LB here? 209 * Treat same as SO_REUSEPORT for now. 210 */ 211 if ((so->so_options & 212 (SO_REUSEADDR|SO_REUSEPORT_LB)) != 0) 213 reuseport_lb = SO_REUSEADDR|SO_REUSEPORT_LB; 214 } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 215 struct epoch_tracker et; 216 struct ifaddr *ifa; 217 218 sin6->sin6_port = 0; /* yech... */ 219 NET_EPOCH_ENTER(et); 220 if ((ifa = ifa_ifwithaddr((struct sockaddr *)sin6)) == 221 NULL && 222 (inp->inp_flags & INP_BINDANY) == 0) { 223 NET_EPOCH_EXIT(et); 224 return (EADDRNOTAVAIL); 225 } 226 227 /* 228 * XXX: bind to an anycast address might accidentally 229 * cause sending a packet with anycast source address. 230 * We should allow to bind to a deprecated address, since 231 * the application dares to use it. 232 */ 233 if (ifa != NULL && 234 ((struct in6_ifaddr *)ifa)->ia6_flags & 235 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) { 236 NET_EPOCH_EXIT(et); 237 return (EADDRNOTAVAIL); 238 } 239 NET_EPOCH_EXIT(et); 240 } 241 if (lport) { 242 struct inpcb *t; 243 244 /* GROSS */ 245 if (ntohs(lport) <= V_ipport_reservedhigh && 246 ntohs(lport) >= V_ipport_reservedlow && 247 priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT)) 248 return (EACCES); 249 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) && 250 priv_check_cred(inp->inp_cred, PRIV_NETINET_REUSEPORT) != 0) { 251 t = in6_pcblookup_local(pcbinfo, 252 &sin6->sin6_addr, lport, 253 INPLOOKUP_WILDCARD, cred); 254 if (t != NULL && 255 (so->so_type != SOCK_STREAM || 256 IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) && 257 (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 258 !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) || 259 (t->inp_flags2 & INP_REUSEPORT) || 260 (t->inp_flags2 & INP_REUSEPORT_LB) == 0) && 261 (inp->inp_cred->cr_uid != 262 t->inp_cred->cr_uid)) 263 return (EADDRINUSE); 264 265 #ifdef INET 266 if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 267 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 268 struct sockaddr_in sin; 269 270 in6_sin6_2_sin(&sin, sin6); 271 t = in_pcblookup_local(pcbinfo, 272 sin.sin_addr, lport, 273 INPLOOKUP_WILDCARD, cred); 274 if (t != NULL && 275 (so->so_type != SOCK_STREAM || 276 ntohl(t->inp_faddr.s_addr) == 277 INADDR_ANY) && 278 (inp->inp_cred->cr_uid != 279 t->inp_cred->cr_uid)) 280 return (EADDRINUSE); 281 } 282 #endif 283 } 284 t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr, 285 lport, lookupflags, cred); 286 if (t && (reuseport & inp_so_options(t)) == 0 && 287 (reuseport_lb & inp_so_options(t)) == 0) { 288 return (EADDRINUSE); 289 } 290 #ifdef INET 291 if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 292 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 293 struct sockaddr_in sin; 294 295 in6_sin6_2_sin(&sin, sin6); 296 t = in_pcblookup_local(pcbinfo, sin.sin_addr, 297 lport, lookupflags, cred); 298 if (t && 299 (reuseport & inp_so_options(t)) == 0 && 300 (reuseport_lb & inp_so_options(t)) == 0 && 301 (ntohl(t->inp_laddr.s_addr) != INADDR_ANY || 302 (t->inp_vflag & INP_IPV6PROTO) != 0)) { 303 return (EADDRINUSE); 304 } 305 } 306 #endif 307 } 308 inp->in6p_laddr = sin6->sin6_addr; 309 } 310 if (lport == 0) { 311 if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) { 312 /* Undo an address bind that may have occurred. */ 313 inp->in6p_laddr = in6addr_any; 314 return (error); 315 } 316 } else { 317 inp->inp_lport = lport; 318 if (in_pcbinshash(inp) != 0) { 319 inp->in6p_laddr = in6addr_any; 320 inp->inp_lport = 0; 321 return (EAGAIN); 322 } 323 } 324 return (0); 325 } 326 327 /* 328 * Transform old in6_pcbconnect() into an inner subroutine for new 329 * in6_pcbconnect(): Do some validity-checking on the remote 330 * address (in mbuf 'nam') and then determine local host address 331 * (i.e., which interface) to use to access that remote host. 332 * 333 * This preserves definition of in6_pcbconnect(), while supporting a 334 * slightly different version for T/TCP. (This is more than 335 * a bit of a kludge, but cleaning up the internal interfaces would 336 * have forced minor changes in every protocol). 337 */ 338 static int 339 in6_pcbladdr(struct inpcb *inp, struct sockaddr_in6 *sin6, 340 struct in6_addr *plocal_addr6) 341 { 342 int error = 0; 343 int scope_ambiguous = 0; 344 struct in6_addr in6a; 345 346 NET_EPOCH_ASSERT(); 347 INP_WLOCK_ASSERT(inp); 348 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); /* XXXRW: why? */ 349 350 if (sin6->sin6_port == 0) 351 return (EADDRNOTAVAIL); 352 353 if (sin6->sin6_scope_id == 0 && !V_ip6_use_defzone) 354 scope_ambiguous = 1; 355 if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0) 356 return(error); 357 358 if (!CK_STAILQ_EMPTY(&V_in6_ifaddrhead)) { 359 /* 360 * If the destination address is UNSPECIFIED addr, 361 * use the loopback addr, e.g ::1. 362 */ 363 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 364 sin6->sin6_addr = in6addr_loopback; 365 } 366 if ((error = prison_remote_ip6(inp->inp_cred, &sin6->sin6_addr)) != 0) 367 return (error); 368 369 error = in6_selectsrc_socket(sin6, inp->in6p_outputopts, 370 inp, inp->inp_cred, scope_ambiguous, &in6a, NULL); 371 if (error) 372 return (error); 373 if (IN6_IS_ADDR_UNSPECIFIED(&in6a)) 374 return (EHOSTUNREACH); 375 376 /* 377 * Do not update this earlier, in case we return with an error. 378 * 379 * XXX: this in6_selectsrc_socket result might replace the bound local 380 * address with the address specified by setsockopt(IPV6_PKTINFO). 381 * Is it the intended behavior? 382 */ 383 *plocal_addr6 = in6a; 384 385 /* 386 * Don't do pcblookup call here; return interface in 387 * plocal_addr6 388 * and exit to caller, that will do the lookup. 389 */ 390 391 return (0); 392 } 393 394 /* 395 * Outer subroutine: 396 * Connect from a socket to a specified address. 397 * Both address and port must be specified in argument sin. 398 * If don't have a local address for this socket yet, 399 * then pick one. 400 */ 401 int 402 in6_pcbconnect(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred, 403 bool rehash __unused) 404 { 405 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 406 struct sockaddr_in6 laddr6; 407 int error; 408 409 NET_EPOCH_ASSERT(); 410 INP_WLOCK_ASSERT(inp); 411 INP_HASH_WLOCK_ASSERT(pcbinfo); 412 KASSERT(sin6->sin6_family == AF_INET6, 413 ("%s: invalid address family for %p", __func__, sin6)); 414 KASSERT(sin6->sin6_len == sizeof(*sin6), 415 ("%s: invalid address length for %p", __func__, sin6)); 416 KASSERT(IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr), 417 ("%s: inp is already connected", __func__)); 418 419 bzero(&laddr6, sizeof(laddr6)); 420 laddr6.sin6_family = AF_INET6; 421 422 #ifdef ROUTE_MPATH 423 if (CALC_FLOWID_OUTBOUND) { 424 uint32_t hash_type, hash_val; 425 426 hash_val = fib6_calc_software_hash(&inp->in6p_laddr, 427 &sin6->sin6_addr, 0, sin6->sin6_port, 428 inp->inp_socket->so_proto->pr_protocol, &hash_type); 429 inp->inp_flowid = hash_val; 430 inp->inp_flowtype = hash_type; 431 } 432 #endif 433 /* 434 * Call inner routine, to assign local interface address. 435 * in6_pcbladdr() may automatically fill in sin6_scope_id. 436 */ 437 if ((error = in6_pcbladdr(inp, sin6, &laddr6.sin6_addr)) != 0) 438 return (error); 439 440 if (in6_pcblookup_hash_locked(pcbinfo, &sin6->sin6_addr, 441 sin6->sin6_port, IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) ? 442 &laddr6.sin6_addr : &inp->in6p_laddr, inp->inp_lport, 0, 443 M_NODOM) != NULL) 444 return (EADDRINUSE); 445 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) { 446 if (inp->inp_lport == 0) { 447 error = in_pcb_lport_dest(inp, 448 (struct sockaddr *) &laddr6, &inp->inp_lport, 449 (struct sockaddr *) sin6, sin6->sin6_port, cred, 450 INPLOOKUP_WILDCARD); 451 if (error) 452 return (error); 453 } 454 inp->in6p_laddr = laddr6.sin6_addr; 455 } 456 inp->in6p_faddr = sin6->sin6_addr; 457 inp->inp_fport = sin6->sin6_port; 458 /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 459 inp->inp_flow &= ~IPV6_FLOWLABEL_MASK; 460 if (inp->inp_flags & IN6P_AUTOFLOWLABEL) 461 inp->inp_flow |= 462 (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK); 463 464 if ((inp->inp_flags & INP_INHASHLIST) != 0) { 465 in_pcbrehash(inp); 466 } else { 467 in_pcbinshash(inp); 468 } 469 470 return (0); 471 } 472 473 void 474 in6_pcbdisconnect(struct inpcb *inp) 475 { 476 477 INP_WLOCK_ASSERT(inp); 478 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); 479 KASSERT(inp->inp_smr == SMR_SEQ_INVALID, 480 ("%s: inp %p was already disconnected", __func__, inp)); 481 482 in_pcbremhash_locked(inp); 483 484 /* See the comment in in_pcbinshash(). */ 485 inp->inp_smr = smr_advance(inp->inp_pcbinfo->ipi_smr); 486 487 /* XXX-MJ torn writes are visible to SMR lookup */ 488 memset(&inp->in6p_laddr, 0, sizeof(inp->in6p_laddr)); 489 memset(&inp->in6p_faddr, 0, sizeof(inp->in6p_faddr)); 490 inp->inp_fport = 0; 491 /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 492 inp->inp_flow &= ~IPV6_FLOWLABEL_MASK; 493 } 494 495 struct sockaddr * 496 in6_sockaddr(in_port_t port, struct in6_addr *addr_p) 497 { 498 struct sockaddr_in6 *sin6; 499 500 sin6 = malloc(sizeof *sin6, M_SONAME, M_WAITOK); 501 bzero(sin6, sizeof *sin6); 502 sin6->sin6_family = AF_INET6; 503 sin6->sin6_len = sizeof(*sin6); 504 sin6->sin6_port = port; 505 sin6->sin6_addr = *addr_p; 506 (void)sa6_recoverscope(sin6); /* XXX: should catch errors */ 507 508 return (struct sockaddr *)sin6; 509 } 510 511 struct sockaddr * 512 in6_v4mapsin6_sockaddr(in_port_t port, struct in_addr *addr_p) 513 { 514 struct sockaddr_in sin; 515 struct sockaddr_in6 *sin6_p; 516 517 bzero(&sin, sizeof sin); 518 sin.sin_family = AF_INET; 519 sin.sin_len = sizeof(sin); 520 sin.sin_port = port; 521 sin.sin_addr = *addr_p; 522 523 sin6_p = malloc(sizeof *sin6_p, M_SONAME, 524 M_WAITOK); 525 in6_sin_2_v4mapsin6(&sin, sin6_p); 526 527 return (struct sockaddr *)sin6_p; 528 } 529 530 int 531 in6_getsockaddr(struct socket *so, struct sockaddr **nam) 532 { 533 struct inpcb *inp; 534 struct in6_addr addr; 535 in_port_t port; 536 537 inp = sotoinpcb(so); 538 KASSERT(inp != NULL, ("in6_getsockaddr: inp == NULL")); 539 540 INP_RLOCK(inp); 541 port = inp->inp_lport; 542 addr = inp->in6p_laddr; 543 INP_RUNLOCK(inp); 544 545 *nam = in6_sockaddr(port, &addr); 546 return 0; 547 } 548 549 int 550 in6_getpeeraddr(struct socket *so, struct sockaddr **nam) 551 { 552 struct inpcb *inp; 553 struct in6_addr addr; 554 in_port_t port; 555 556 inp = sotoinpcb(so); 557 KASSERT(inp != NULL, ("in6_getpeeraddr: inp == NULL")); 558 559 INP_RLOCK(inp); 560 port = inp->inp_fport; 561 addr = inp->in6p_faddr; 562 INP_RUNLOCK(inp); 563 564 *nam = in6_sockaddr(port, &addr); 565 return 0; 566 } 567 568 int 569 in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam) 570 { 571 struct inpcb *inp; 572 int error; 573 574 inp = sotoinpcb(so); 575 KASSERT(inp != NULL, ("in6_mapped_sockaddr: inp == NULL")); 576 577 #ifdef INET 578 if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 579 error = in_getsockaddr(so, nam); 580 if (error == 0) 581 in6_sin_2_v4mapsin6_in_sock(nam); 582 } else 583 #endif 584 { 585 /* scope issues will be handled in in6_getsockaddr(). */ 586 error = in6_getsockaddr(so, nam); 587 } 588 589 return error; 590 } 591 592 int 593 in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam) 594 { 595 struct inpcb *inp; 596 int error; 597 598 inp = sotoinpcb(so); 599 KASSERT(inp != NULL, ("in6_mapped_peeraddr: inp == NULL")); 600 601 #ifdef INET 602 if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 603 error = in_getpeeraddr(so, nam); 604 if (error == 0) 605 in6_sin_2_v4mapsin6_in_sock(nam); 606 } else 607 #endif 608 /* scope issues will be handled in in6_getpeeraddr(). */ 609 error = in6_getpeeraddr(so, nam); 610 611 return error; 612 } 613 614 /* 615 * Pass some notification to all connections of a protocol 616 * associated with address dst. The local address and/or port numbers 617 * may be specified to limit the search. The "usual action" will be 618 * taken, depending on the ctlinput cmd. The caller must filter any 619 * cmds that are uninteresting (e.g., no error in the map). 620 * Call the protocol specific routine (if any) to report 621 * any errors for each matching socket. 622 */ 623 static bool 624 inp_match6(const struct inpcb *inp, void *v __unused) 625 { 626 627 return ((inp->inp_vflag & INP_IPV6) != 0); 628 } 629 630 void 631 in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr_in6 *sa6_dst, 632 u_int fport_arg, const struct sockaddr_in6 *src, u_int lport_arg, 633 int errno, void *cmdarg, 634 struct inpcb *(*notify)(struct inpcb *, int)) 635 { 636 struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_WLOCKPCB, 637 inp_match6, NULL); 638 struct inpcb *inp; 639 struct sockaddr_in6 sa6_src; 640 u_short fport = fport_arg, lport = lport_arg; 641 u_int32_t flowinfo; 642 643 if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr)) 644 return; 645 646 /* 647 * note that src can be NULL when we get notify by local fragmentation. 648 */ 649 sa6_src = (src == NULL) ? sa6_any : *src; 650 flowinfo = sa6_src.sin6_flowinfo; 651 652 while ((inp = inp_next(&inpi)) != NULL) { 653 INP_WLOCK_ASSERT(inp); 654 /* 655 * If the error designates a new path MTU for a destination 656 * and the application (associated with this socket) wanted to 657 * know the value, notify. 658 * XXX: should we avoid to notify the value to TCP sockets? 659 */ 660 if (errno == EMSGSIZE && cmdarg != NULL) 661 ip6_notify_pmtu(inp, sa6_dst, *(uint32_t *)cmdarg); 662 663 /* 664 * Detect if we should notify the error. If no source and 665 * destination ports are specified, but non-zero flowinfo and 666 * local address match, notify the error. This is the case 667 * when the error is delivered with an encrypted buffer 668 * by ESP. Otherwise, just compare addresses and ports 669 * as usual. 670 */ 671 if (lport == 0 && fport == 0 && flowinfo && 672 inp->inp_socket != NULL && 673 flowinfo == (inp->inp_flow & IPV6_FLOWLABEL_MASK) && 674 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr)) 675 goto do_notify; 676 else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, 677 &sa6_dst->sin6_addr) || 678 inp->inp_socket == 0 || 679 (lport && inp->inp_lport != lport) || 680 (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) && 681 !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 682 &sa6_src.sin6_addr)) || 683 (fport && inp->inp_fport != fport)) { 684 continue; 685 } 686 687 do_notify: 688 if (notify) 689 (*notify)(inp, errno); 690 } 691 } 692 693 /* 694 * Lookup a PCB based on the local address and port. Caller must hold the 695 * hash lock. No inpcb locks or references are acquired. 696 */ 697 struct inpcb * 698 in6_pcblookup_local(struct inpcbinfo *pcbinfo, struct in6_addr *laddr, 699 u_short lport, int lookupflags, struct ucred *cred) 700 { 701 struct inpcb *inp; 702 int matchwild = 3, wildcard; 703 704 KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0, 705 ("%s: invalid lookup flags %d", __func__, lookupflags)); 706 707 INP_HASH_LOCK_ASSERT(pcbinfo); 708 709 if ((lookupflags & INPLOOKUP_WILDCARD) == 0) { 710 struct inpcbhead *head; 711 /* 712 * Look for an unconnected (wildcard foreign addr) PCB that 713 * matches the local address and port we're looking for. 714 */ 715 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 716 pcbinfo->ipi_hashmask)]; 717 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 718 /* XXX inp locking */ 719 if ((inp->inp_vflag & INP_IPV6) == 0) 720 continue; 721 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 722 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 723 inp->inp_lport == lport) { 724 /* Found. */ 725 if (prison_equal_ip6(cred->cr_prison, 726 inp->inp_cred->cr_prison)) 727 return (inp); 728 } 729 } 730 /* 731 * Not found. 732 */ 733 return (NULL); 734 } else { 735 struct inpcbporthead *porthash; 736 struct inpcbport *phd; 737 struct inpcb *match = NULL; 738 /* 739 * Best fit PCB lookup. 740 * 741 * First see if this local port is in use by looking on the 742 * port hash list. 743 */ 744 porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport, 745 pcbinfo->ipi_porthashmask)]; 746 CK_LIST_FOREACH(phd, porthash, phd_hash) { 747 if (phd->phd_port == lport) 748 break; 749 } 750 if (phd != NULL) { 751 /* 752 * Port is in use by one or more PCBs. Look for best 753 * fit. 754 */ 755 CK_LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) { 756 wildcard = 0; 757 if (!prison_equal_ip6(cred->cr_prison, 758 inp->inp_cred->cr_prison)) 759 continue; 760 /* XXX inp locking */ 761 if ((inp->inp_vflag & INP_IPV6) == 0) 762 continue; 763 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) 764 wildcard++; 765 if (!IN6_IS_ADDR_UNSPECIFIED( 766 &inp->in6p_laddr)) { 767 if (IN6_IS_ADDR_UNSPECIFIED(laddr)) 768 wildcard++; 769 else if (!IN6_ARE_ADDR_EQUAL( 770 &inp->in6p_laddr, laddr)) 771 continue; 772 } else { 773 if (!IN6_IS_ADDR_UNSPECIFIED(laddr)) 774 wildcard++; 775 } 776 if (wildcard < matchwild) { 777 match = inp; 778 matchwild = wildcard; 779 if (matchwild == 0) 780 break; 781 } 782 } 783 } 784 return (match); 785 } 786 } 787 788 static bool 789 in6_multi_match(const struct inpcb *inp, void *v __unused) 790 { 791 792 if ((inp->inp_vflag & INP_IPV6) && inp->in6p_moptions != NULL) 793 return (true); 794 else 795 return (false); 796 } 797 798 void 799 in6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp) 800 { 801 struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_RLOCKPCB, 802 in6_multi_match, NULL); 803 struct inpcb *inp; 804 struct in6_multi *inm; 805 struct in6_mfilter *imf; 806 struct ip6_moptions *im6o; 807 808 IN6_MULTI_LOCK_ASSERT(); 809 810 while ((inp = inp_next(&inpi)) != NULL) { 811 INP_RLOCK_ASSERT(inp); 812 813 im6o = inp->in6p_moptions; 814 /* 815 * Unselect the outgoing ifp for multicast if it 816 * is being detached. 817 */ 818 if (im6o->im6o_multicast_ifp == ifp) 819 im6o->im6o_multicast_ifp = NULL; 820 /* 821 * Drop multicast group membership if we joined 822 * through the interface being detached. 823 */ 824 restart: 825 IP6_MFILTER_FOREACH(imf, &im6o->im6o_head) { 826 if ((inm = imf->im6f_in6m) == NULL) 827 continue; 828 if (inm->in6m_ifp != ifp) 829 continue; 830 ip6_mfilter_remove(&im6o->im6o_head, imf); 831 in6_leavegroup_locked(inm, NULL); 832 ip6_mfilter_free(imf); 833 goto restart; 834 } 835 } 836 } 837 838 /* 839 * Check for alternatives when higher level complains 840 * about service problems. For now, invalidate cached 841 * routing information. If the route was created dynamically 842 * (by a redirect), time to try a default gateway again. 843 */ 844 void 845 in6_losing(struct inpcb *inp) 846 { 847 848 RO_INVALIDATE_CACHE(&inp->inp_route6); 849 } 850 851 /* 852 * After a routing change, flush old routing 853 * and allocate a (hopefully) better one. 854 */ 855 struct inpcb * 856 in6_rtchange(struct inpcb *inp, int errno __unused) 857 { 858 859 RO_INVALIDATE_CACHE(&inp->inp_route6); 860 return inp; 861 } 862 863 static bool 864 in6_pcblookup_lb_numa_match(const struct inpcblbgroup *grp, int domain) 865 { 866 return (domain == M_NODOM || domain == grp->il_numa_domain); 867 } 868 869 static struct inpcb * 870 in6_pcblookup_lbgroup(const struct inpcbinfo *pcbinfo, 871 const struct in6_addr *faddr, uint16_t fport, const struct in6_addr *laddr, 872 uint16_t lport, uint8_t domain) 873 { 874 const struct inpcblbgrouphead *hdr; 875 struct inpcblbgroup *grp; 876 struct inpcblbgroup *jail_exact, *jail_wild, *local_exact, *local_wild; 877 878 INP_HASH_LOCK_ASSERT(pcbinfo); 879 880 hdr = &pcbinfo->ipi_lbgrouphashbase[ 881 INP_PCBPORTHASH(lport, pcbinfo->ipi_lbgrouphashmask)]; 882 883 /* 884 * Search for an LB group match based on the following criteria: 885 * - prefer jailed groups to non-jailed groups 886 * - prefer exact source address matches to wildcard matches 887 * - prefer groups bound to the specified NUMA domain 888 */ 889 jail_exact = jail_wild = local_exact = local_wild = NULL; 890 CK_LIST_FOREACH(grp, hdr, il_list) { 891 bool injail; 892 893 #ifdef INET 894 if (!(grp->il_vflag & INP_IPV6)) 895 continue; 896 #endif 897 if (grp->il_lport != lport) 898 continue; 899 900 injail = prison_flag(grp->il_cred, PR_IP6) != 0; 901 if (injail && prison_check_ip6_locked(grp->il_cred->cr_prison, 902 laddr) != 0) 903 continue; 904 905 if (IN6_ARE_ADDR_EQUAL(&grp->il6_laddr, laddr)) { 906 if (injail) { 907 jail_exact = grp; 908 if (in6_pcblookup_lb_numa_match(grp, domain)) 909 /* This is a perfect match. */ 910 goto out; 911 } else if (local_exact == NULL || 912 in6_pcblookup_lb_numa_match(grp, domain)) { 913 local_exact = grp; 914 } 915 } else if (IN6_IS_ADDR_UNSPECIFIED(&grp->il6_laddr)) { 916 if (injail) { 917 if (jail_wild == NULL || 918 in6_pcblookup_lb_numa_match(grp, domain)) 919 jail_wild = grp; 920 } else if (local_wild == NULL || 921 in6_pcblookup_lb_numa_match(grp, domain)) { 922 local_wild = grp; 923 } 924 } 925 } 926 927 if (jail_exact != NULL) 928 grp = jail_exact; 929 else if (jail_wild != NULL) 930 grp = jail_wild; 931 else if (local_exact != NULL) 932 grp = local_exact; 933 else 934 grp = local_wild; 935 if (grp == NULL) 936 return (NULL); 937 out: 938 return (grp->il_inp[INP6_PCBLBGROUP_PKTHASH(faddr, lport, fport) % 939 grp->il_inpcnt]); 940 } 941 942 static bool 943 in6_pcblookup_exact_match(const struct inpcb *inp, const struct in6_addr *faddr, 944 u_short fport, const struct in6_addr *laddr, u_short lport) 945 { 946 /* XXX inp locking */ 947 if ((inp->inp_vflag & INP_IPV6) == 0) 948 return (false); 949 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) && 950 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 951 inp->inp_fport == fport && inp->inp_lport == lport) 952 return (true); 953 return (false); 954 } 955 956 static struct inpcb * 957 in6_pcblookup_hash_exact(struct inpcbinfo *pcbinfo, 958 const struct in6_addr *faddr, u_short fport, 959 const struct in6_addr *laddr, u_short lport) 960 { 961 struct inpcbhead *head; 962 struct inpcb *inp; 963 964 INP_HASH_LOCK_ASSERT(pcbinfo); 965 966 /* 967 * First look for an exact match. 968 */ 969 head = &pcbinfo->ipi_hash_exact[INP6_PCBHASH(faddr, lport, fport, 970 pcbinfo->ipi_hashmask)]; 971 CK_LIST_FOREACH(inp, head, inp_hash_exact) { 972 if (in6_pcblookup_exact_match(inp, faddr, fport, laddr, lport)) 973 return (inp); 974 } 975 return (NULL); 976 } 977 978 typedef enum { 979 INPLOOKUP_MATCH_NONE = 0, 980 INPLOOKUP_MATCH_WILD = 1, 981 INPLOOKUP_MATCH_LADDR = 2, 982 } inp_lookup_match_t; 983 984 static inp_lookup_match_t 985 in6_pcblookup_wild_match(const struct inpcb *inp, const struct in6_addr *laddr, 986 u_short lport) 987 { 988 /* XXX inp locking */ 989 if ((inp->inp_vflag & INP_IPV6) == 0) 990 return (INPLOOKUP_MATCH_NONE); 991 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) || 992 inp->inp_lport != lport) 993 return (INPLOOKUP_MATCH_NONE); 994 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 995 return (INPLOOKUP_MATCH_WILD); 996 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) 997 return (INPLOOKUP_MATCH_LADDR); 998 return (INPLOOKUP_MATCH_NONE); 999 } 1000 1001 #define INP_LOOKUP_AGAIN ((struct inpcb *)(uintptr_t)-1) 1002 1003 static struct inpcb * 1004 in6_pcblookup_hash_wild_smr(struct inpcbinfo *pcbinfo, 1005 const struct in6_addr *faddr, u_short fport, const struct in6_addr *laddr, 1006 u_short lport, const inp_lookup_t lockflags) 1007 { 1008 struct inpcbhead *head; 1009 struct inpcb *inp; 1010 1011 KASSERT(SMR_ENTERED(pcbinfo->ipi_smr), 1012 ("%s: not in SMR read section", __func__)); 1013 1014 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 1015 pcbinfo->ipi_hashmask)]; 1016 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 1017 inp_lookup_match_t match; 1018 1019 match = in6_pcblookup_wild_match(inp, laddr, lport); 1020 if (match == INPLOOKUP_MATCH_NONE) 1021 continue; 1022 1023 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1024 if (__predict_true(in6_pcblookup_wild_match(inp, laddr, 1025 lport) != INPLOOKUP_MATCH_NONE)) 1026 return (inp); 1027 inp_unlock(inp, lockflags); 1028 } 1029 1030 /* 1031 * The matching socket disappeared out from under us. Fall back 1032 * to a serialized lookup. 1033 */ 1034 return (INP_LOOKUP_AGAIN); 1035 } 1036 return (NULL); 1037 } 1038 1039 static struct inpcb * 1040 in6_pcblookup_hash_wild_locked(struct inpcbinfo *pcbinfo, 1041 const struct in6_addr *faddr, u_short fport, const struct in6_addr *laddr, 1042 u_short lport) 1043 { 1044 struct inpcbhead *head; 1045 struct inpcb *inp, *jail_wild, *local_exact, *local_wild; 1046 1047 INP_HASH_LOCK_ASSERT(pcbinfo); 1048 1049 /* 1050 * Order of socket selection - we always prefer jails. 1051 * 1. jailed, non-wild. 1052 * 2. jailed, wild. 1053 * 3. non-jailed, non-wild. 1054 * 4. non-jailed, wild. 1055 */ 1056 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 1057 pcbinfo->ipi_hashmask)]; 1058 local_wild = local_exact = jail_wild = NULL; 1059 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 1060 inp_lookup_match_t match; 1061 bool injail; 1062 1063 match = in6_pcblookup_wild_match(inp, laddr, lport); 1064 if (match == INPLOOKUP_MATCH_NONE) 1065 continue; 1066 1067 injail = prison_flag(inp->inp_cred, PR_IP6) != 0; 1068 if (injail) { 1069 if (prison_check_ip6_locked( 1070 inp->inp_cred->cr_prison, laddr) != 0) 1071 continue; 1072 } else { 1073 if (local_exact != NULL) 1074 continue; 1075 } 1076 1077 if (match == INPLOOKUP_MATCH_LADDR) { 1078 if (injail) 1079 return (inp); 1080 else 1081 local_exact = inp; 1082 } else { 1083 if (injail) 1084 jail_wild = inp; 1085 else 1086 local_wild = inp; 1087 } 1088 } 1089 1090 if (jail_wild != NULL) 1091 return (jail_wild); 1092 if (local_exact != NULL) 1093 return (local_exact); 1094 if (local_wild != NULL) 1095 return (local_wild); 1096 return (NULL); 1097 } 1098 1099 struct inpcb * 1100 in6_pcblookup_hash_locked(struct inpcbinfo *pcbinfo, 1101 const struct in6_addr *faddr, u_int fport_arg, 1102 const struct in6_addr *laddr, u_int lport_arg, 1103 int lookupflags, uint8_t numa_domain) 1104 { 1105 struct inpcb *inp; 1106 u_short fport = fport_arg, lport = lport_arg; 1107 1108 KASSERT((lookupflags & ~INPLOOKUP_WILDCARD) == 0, 1109 ("%s: invalid lookup flags %d", __func__, lookupflags)); 1110 KASSERT(!IN6_IS_ADDR_UNSPECIFIED(faddr), 1111 ("%s: invalid foreign address", __func__)); 1112 KASSERT(!IN6_IS_ADDR_UNSPECIFIED(laddr), 1113 ("%s: invalid local address", __func__)); 1114 INP_HASH_LOCK_ASSERT(pcbinfo); 1115 1116 inp = in6_pcblookup_hash_exact(pcbinfo, faddr, fport, laddr, lport); 1117 if (inp != NULL) 1118 return (inp); 1119 1120 if ((lookupflags & INPLOOKUP_WILDCARD) != 0) { 1121 inp = in6_pcblookup_lbgroup(pcbinfo, faddr, fport, laddr, 1122 lport, numa_domain); 1123 if (inp == NULL) { 1124 inp = in6_pcblookup_hash_wild_locked(pcbinfo, faddr, 1125 fport, laddr, lport); 1126 } 1127 } 1128 return (inp); 1129 } 1130 1131 static struct inpcb * 1132 in6_pcblookup_hash(struct inpcbinfo *pcbinfo, const struct in6_addr *faddr, 1133 u_int fport, const struct in6_addr *laddr, u_int lport, int lookupflags, 1134 uint8_t numa_domain) 1135 { 1136 struct inpcb *inp; 1137 const inp_lookup_t lockflags = lookupflags & INPLOOKUP_LOCKMASK; 1138 1139 KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0, 1140 ("%s: LOCKPCB not set", __func__)); 1141 1142 INP_HASH_WLOCK(pcbinfo); 1143 inp = in6_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport, 1144 lookupflags & ~INPLOOKUP_LOCKMASK, numa_domain); 1145 if (inp != NULL && !inp_trylock(inp, lockflags)) { 1146 in_pcbref(inp); 1147 INP_HASH_WUNLOCK(pcbinfo); 1148 inp_lock(inp, lockflags); 1149 if (in_pcbrele(inp, lockflags)) 1150 /* XXX-MJ or retry until we get a negative match? */ 1151 inp = NULL; 1152 } else { 1153 INP_HASH_WUNLOCK(pcbinfo); 1154 } 1155 return (inp); 1156 } 1157 1158 static struct inpcb * 1159 in6_pcblookup_hash_smr(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 1160 u_int fport_arg, struct in6_addr *laddr, u_int lport_arg, int lookupflags, 1161 uint8_t numa_domain) 1162 { 1163 struct inpcb *inp; 1164 const inp_lookup_t lockflags = lookupflags & INPLOOKUP_LOCKMASK; 1165 const u_short fport = fport_arg, lport = lport_arg; 1166 1167 KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0, 1168 ("%s: invalid lookup flags %d", __func__, lookupflags)); 1169 KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0, 1170 ("%s: LOCKPCB not set", __func__)); 1171 1172 smr_enter(pcbinfo->ipi_smr); 1173 inp = in6_pcblookup_hash_exact(pcbinfo, faddr, fport, laddr, lport); 1174 if (inp != NULL) { 1175 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1176 if (__predict_true(in6_pcblookup_exact_match(inp, 1177 faddr, fport, laddr, lport))) 1178 return (inp); 1179 inp_unlock(inp, lockflags); 1180 } 1181 /* 1182 * We failed to lock the inpcb, or its connection state changed 1183 * out from under us. Fall back to a precise search. 1184 */ 1185 return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport, 1186 lookupflags, numa_domain)); 1187 } 1188 1189 if ((lookupflags & INPLOOKUP_WILDCARD) != 0) { 1190 inp = in6_pcblookup_lbgroup(pcbinfo, faddr, fport, 1191 laddr, lport, numa_domain); 1192 if (inp != NULL) { 1193 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1194 if (__predict_true(in6_pcblookup_wild_match(inp, 1195 laddr, lport) != INPLOOKUP_MATCH_NONE)) 1196 return (inp); 1197 inp_unlock(inp, lockflags); 1198 } 1199 inp = INP_LOOKUP_AGAIN; 1200 } else { 1201 inp = in6_pcblookup_hash_wild_smr(pcbinfo, faddr, fport, 1202 laddr, lport, lockflags); 1203 } 1204 if (inp == INP_LOOKUP_AGAIN) { 1205 return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, 1206 lport, lookupflags, numa_domain)); 1207 } 1208 } 1209 1210 if (inp == NULL) 1211 smr_exit(pcbinfo->ipi_smr); 1212 1213 return (inp); 1214 } 1215 1216 /* 1217 * Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf 1218 * from which a pre-calculated hash value may be extracted. 1219 */ 1220 struct inpcb * 1221 in6_pcblookup(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, u_int fport, 1222 struct in6_addr *laddr, u_int lport, int lookupflags, 1223 struct ifnet *ifp __unused) 1224 { 1225 return (in6_pcblookup_hash_smr(pcbinfo, faddr, fport, laddr, lport, 1226 lookupflags, M_NODOM)); 1227 } 1228 1229 struct inpcb * 1230 in6_pcblookup_mbuf(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 1231 u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags, 1232 struct ifnet *ifp __unused, struct mbuf *m) 1233 { 1234 return (in6_pcblookup_hash_smr(pcbinfo, faddr, fport, laddr, lport, 1235 lookupflags, m->m_pkthdr.numa_domain)); 1236 } 1237 1238 void 1239 init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m, int srcordst) 1240 { 1241 struct ip6_hdr *ip; 1242 1243 ip = mtod(m, struct ip6_hdr *); 1244 bzero(sin6, sizeof(*sin6)); 1245 sin6->sin6_len = sizeof(*sin6); 1246 sin6->sin6_family = AF_INET6; 1247 sin6->sin6_addr = srcordst ? ip->ip6_dst : ip->ip6_src; 1248 1249 (void)sa6_recoverscope(sin6); /* XXX: should catch errors... */ 1250 1251 return; 1252 } 1253