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 #include "opt_inet.h" 71 #include "opt_inet6.h" 72 #include "opt_ipsec.h" 73 #include "opt_route.h" 74 #include "opt_rss.h" 75 76 #include <sys/hash.h> 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/malloc.h> 80 #include <sys/mbuf.h> 81 #include <sys/domain.h> 82 #include <sys/proc.h> 83 #include <sys/protosw.h> 84 #include <sys/smr.h> 85 #include <sys/socket.h> 86 #include <sys/socketvar.h> 87 #include <sys/sockio.h> 88 #include <sys/errno.h> 89 #include <sys/time.h> 90 #include <sys/priv.h> 91 #include <sys/proc.h> 92 #include <sys/jail.h> 93 94 #include <vm/uma.h> 95 96 #include <net/if.h> 97 #include <net/if_var.h> 98 #include <net/if_llatbl.h> 99 #include <net/if_types.h> 100 #include <net/route.h> 101 #include <net/route/nhop.h> 102 103 #include <netinet/in.h> 104 #include <netinet/in_var.h> 105 #include <netinet/in_systm.h> 106 #include <netinet/ip6.h> 107 #include <netinet/ip_var.h> 108 109 #include <netinet6/ip6_var.h> 110 #include <netinet6/nd6.h> 111 #include <netinet/in_pcb.h> 112 #include <netinet/in_pcb_var.h> 113 #include <netinet6/in6_pcb.h> 114 #include <netinet6/in6_fib.h> 115 #include <netinet6/scope6_var.h> 116 117 int 118 in6_pcbsetport(struct in6_addr *laddr, struct inpcb *inp, struct ucred *cred) 119 { 120 struct socket *so = inp->inp_socket; 121 u_int16_t lport = 0; 122 int error, lookupflags = 0; 123 #ifdef INVARIANTS 124 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 125 #endif 126 127 INP_WLOCK_ASSERT(inp); 128 INP_HASH_WLOCK_ASSERT(pcbinfo); 129 130 error = prison_local_ip6(cred, laddr, 131 ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0)); 132 if (error) 133 return(error); 134 135 /* XXX: this is redundant when called from in6_pcbbind */ 136 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0) 137 lookupflags = INPLOOKUP_WILDCARD; 138 139 inp->inp_flags |= INP_ANONPORT; 140 141 error = in_pcb_lport(inp, NULL, &lport, cred, lookupflags); 142 if (error != 0) 143 return (error); 144 145 inp->inp_lport = lport; 146 if (in_pcbinshash(inp) != 0) { 147 inp->in6p_laddr = in6addr_any; 148 inp->inp_lport = 0; 149 return (EAGAIN); 150 } 151 152 return (0); 153 } 154 155 int 156 in6_pcbbind(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred) 157 { 158 struct socket *so = inp->inp_socket; 159 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 160 u_short lport = 0; 161 int error, lookupflags = 0; 162 int reuseport = (so->so_options & SO_REUSEPORT); 163 164 /* 165 * XXX: Maybe we could let SO_REUSEPORT_LB set SO_REUSEPORT bit here 166 * so that we don't have to add to the (already messy) code below. 167 */ 168 int reuseport_lb = (so->so_options & SO_REUSEPORT_LB); 169 170 INP_WLOCK_ASSERT(inp); 171 INP_HASH_WLOCK_ASSERT(pcbinfo); 172 173 if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 174 return (EINVAL); 175 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT|SO_REUSEPORT_LB)) == 0) 176 lookupflags = INPLOOKUP_WILDCARD; 177 if (sin6 == NULL) { 178 if ((error = prison_local_ip6(cred, &inp->in6p_laddr, 179 ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0) 180 return (error); 181 } else { 182 KASSERT(sin6->sin6_family == AF_INET6, 183 ("%s: invalid address family for %p", __func__, sin6)); 184 KASSERT(sin6->sin6_len == sizeof(*sin6), 185 ("%s: invalid address length for %p", __func__, sin6)); 186 187 if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0) 188 return(error); 189 190 if ((error = prison_local_ip6(cred, &sin6->sin6_addr, 191 ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0) 192 return (error); 193 194 lport = sin6->sin6_port; 195 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 196 /* 197 * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 198 * allow compepte duplication of binding if 199 * SO_REUSEPORT is set, or if SO_REUSEADDR is set 200 * and a multicast address is bound on both 201 * new and duplicated sockets. 202 */ 203 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0) 204 reuseport = SO_REUSEADDR|SO_REUSEPORT; 205 /* 206 * XXX: How to deal with SO_REUSEPORT_LB here? 207 * Treat same as SO_REUSEPORT for now. 208 */ 209 if ((so->so_options & 210 (SO_REUSEADDR|SO_REUSEPORT_LB)) != 0) 211 reuseport_lb = SO_REUSEADDR|SO_REUSEPORT_LB; 212 } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 213 struct epoch_tracker et; 214 struct ifaddr *ifa; 215 216 sin6->sin6_port = 0; /* yech... */ 217 NET_EPOCH_ENTER(et); 218 if ((ifa = ifa_ifwithaddr((struct sockaddr *)sin6)) == 219 NULL && 220 (inp->inp_flags & INP_BINDANY) == 0) { 221 NET_EPOCH_EXIT(et); 222 return (EADDRNOTAVAIL); 223 } 224 225 /* 226 * XXX: bind to an anycast address might accidentally 227 * cause sending a packet with anycast source address. 228 * We should allow to bind to a deprecated address, since 229 * the application dares to use it. 230 */ 231 if (ifa != NULL && 232 ((struct in6_ifaddr *)ifa)->ia6_flags & 233 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) { 234 NET_EPOCH_EXIT(et); 235 return (EADDRNOTAVAIL); 236 } 237 NET_EPOCH_EXIT(et); 238 } 239 if (lport) { 240 struct inpcb *t; 241 242 /* GROSS */ 243 if (ntohs(lport) <= V_ipport_reservedhigh && 244 ntohs(lport) >= V_ipport_reservedlow && 245 priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT)) 246 return (EACCES); 247 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) && 248 priv_check_cred(inp->inp_cred, PRIV_NETINET_REUSEPORT) != 0) { 249 t = in6_pcblookup_local(pcbinfo, 250 &sin6->sin6_addr, lport, 251 INPLOOKUP_WILDCARD, cred); 252 if (t != NULL && 253 (so->so_type != SOCK_STREAM || 254 IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) && 255 (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 256 !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) || 257 (t->inp_socket->so_options & SO_REUSEPORT) || 258 (t->inp_socket->so_options & SO_REUSEPORT_LB) == 0) && 259 (inp->inp_cred->cr_uid != 260 t->inp_cred->cr_uid)) 261 return (EADDRINUSE); 262 263 #ifdef INET 264 if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 265 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 266 struct sockaddr_in sin; 267 268 in6_sin6_2_sin(&sin, sin6); 269 t = in_pcblookup_local(pcbinfo, 270 sin.sin_addr, lport, 271 INPLOOKUP_WILDCARD, cred); 272 if (t != NULL && 273 (so->so_type != SOCK_STREAM || 274 ntohl(t->inp_faddr.s_addr) == 275 INADDR_ANY) && 276 (inp->inp_cred->cr_uid != 277 t->inp_cred->cr_uid)) 278 return (EADDRINUSE); 279 } 280 #endif 281 } 282 t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr, 283 lport, lookupflags, cred); 284 if (t && (reuseport & t->inp_socket->so_options) == 0 && 285 (reuseport_lb & t->inp_socket->so_options) == 0) { 286 return (EADDRINUSE); 287 } 288 #ifdef INET 289 if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 290 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 291 struct sockaddr_in sin; 292 293 in6_sin6_2_sin(&sin, sin6); 294 t = in_pcblookup_local(pcbinfo, sin.sin_addr, 295 lport, lookupflags, cred); 296 if (t && 297 (reuseport & t->inp_socket->so_options) == 0 && 298 (reuseport_lb & t->inp_socket->so_options) == 0 && 299 (ntohl(t->inp_laddr.s_addr) != INADDR_ANY || 300 (t->inp_vflag & INP_IPV6PROTO) != 0)) { 301 return (EADDRINUSE); 302 } 303 } 304 #endif 305 } 306 inp->in6p_laddr = sin6->sin6_addr; 307 } 308 if (lport == 0) { 309 if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) { 310 /* Undo an address bind that may have occurred. */ 311 inp->in6p_laddr = in6addr_any; 312 return (error); 313 } 314 } else { 315 inp->inp_lport = lport; 316 if (in_pcbinshash(inp) != 0) { 317 inp->in6p_laddr = in6addr_any; 318 inp->inp_lport = 0; 319 return (EAGAIN); 320 } 321 } 322 return (0); 323 } 324 325 /* 326 * Transform old in6_pcbconnect() into an inner subroutine for new 327 * in6_pcbconnect(): Do some validity-checking on the remote 328 * address (in mbuf 'nam') and then determine local host address 329 * (i.e., which interface) to use to access that remote host. 330 * 331 * This preserves definition of in6_pcbconnect(), while supporting a 332 * slightly different version for T/TCP. (This is more than 333 * a bit of a kludge, but cleaning up the internal interfaces would 334 * have forced minor changes in every protocol). 335 */ 336 static int 337 in6_pcbladdr(struct inpcb *inp, struct sockaddr_in6 *sin6, 338 struct in6_addr *plocal_addr6, bool sas_required) 339 { 340 int error = 0; 341 int scope_ambiguous = 0; 342 struct in6_addr in6a; 343 344 NET_EPOCH_ASSERT(); 345 INP_WLOCK_ASSERT(inp); 346 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); /* XXXRW: why? */ 347 348 if (sin6->sin6_port == 0) 349 return (EADDRNOTAVAIL); 350 351 if (sin6->sin6_scope_id == 0 && !V_ip6_use_defzone) 352 scope_ambiguous = 1; 353 if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0) 354 return(error); 355 356 if (!CK_STAILQ_EMPTY(&V_in6_ifaddrhead)) { 357 /* 358 * If the destination address is UNSPECIFIED addr, 359 * use the loopback addr, e.g ::1. 360 */ 361 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 362 sin6->sin6_addr = in6addr_loopback; 363 } 364 if ((error = prison_remote_ip6(inp->inp_cred, &sin6->sin6_addr)) != 0) 365 return (error); 366 367 if (sas_required) { 368 error = in6_selectsrc_socket(sin6, inp->in6p_outputopts, 369 inp, inp->inp_cred, scope_ambiguous, &in6a, NULL); 370 if (error) 371 return (error); 372 } else { 373 /* 374 * Source address selection isn't required when syncache 375 * has already established connection and both source and 376 * destination addresses was chosen. 377 * 378 * This also includes the case when fwd_tag was used to 379 * select source address in tcp_input(). 380 */ 381 in6a = inp->in6p_laddr; 382 } 383 384 if (IN6_IS_ADDR_UNSPECIFIED(&in6a)) 385 return (EHOSTUNREACH); 386 /* 387 * Do not update this earlier, in case we return with an error. 388 * 389 * XXX: this in6_selectsrc_socket result might replace the bound local 390 * address with the address specified by setsockopt(IPV6_PKTINFO). 391 * Is it the intended behavior? 392 */ 393 *plocal_addr6 = in6a; 394 395 /* 396 * Don't do pcblookup call here; return interface in 397 * plocal_addr6 398 * and exit to caller, that will do the lookup. 399 */ 400 401 return (0); 402 } 403 404 /* 405 * Outer subroutine: 406 * Connect from a socket to a specified address. 407 * Both address and port must be specified in argument sin. 408 * If don't have a local address for this socket yet, 409 * then pick one. 410 */ 411 int 412 in6_pcbconnect(struct inpcb *inp, struct sockaddr_in6 *sin6, struct ucred *cred, 413 bool sas_required) 414 { 415 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 416 struct sockaddr_in6 laddr6; 417 int error; 418 419 NET_EPOCH_ASSERT(); 420 INP_WLOCK_ASSERT(inp); 421 INP_HASH_WLOCK_ASSERT(pcbinfo); 422 KASSERT(sin6->sin6_family == AF_INET6, 423 ("%s: invalid address family for %p", __func__, sin6)); 424 KASSERT(sin6->sin6_len == sizeof(*sin6), 425 ("%s: invalid address length for %p", __func__, sin6)); 426 KASSERT(IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr), 427 ("%s: inp is already connected", __func__)); 428 429 bzero(&laddr6, sizeof(laddr6)); 430 laddr6.sin6_family = AF_INET6; 431 432 #ifdef ROUTE_MPATH 433 if (CALC_FLOWID_OUTBOUND) { 434 uint32_t hash_type, hash_val; 435 436 hash_val = fib6_calc_software_hash(&inp->in6p_laddr, 437 &sin6->sin6_addr, 0, sin6->sin6_port, 438 inp->inp_socket->so_proto->pr_protocol, &hash_type); 439 inp->inp_flowid = hash_val; 440 inp->inp_flowtype = hash_type; 441 } 442 #endif 443 /* 444 * Call inner routine, to assign local interface address. 445 * in6_pcbladdr() may automatically fill in sin6_scope_id. 446 */ 447 if ((error = in6_pcbladdr(inp, sin6, &laddr6.sin6_addr, 448 sas_required)) != 0) 449 return (error); 450 451 if (in6_pcblookup_hash_locked(pcbinfo, &sin6->sin6_addr, 452 sin6->sin6_port, IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) ? 453 &laddr6.sin6_addr : &inp->in6p_laddr, inp->inp_lport, 0, 454 M_NODOM) != NULL) 455 return (EADDRINUSE); 456 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) { 457 if (inp->inp_lport == 0) { 458 error = in_pcb_lport_dest(inp, 459 (struct sockaddr *) &laddr6, &inp->inp_lport, 460 (struct sockaddr *) sin6, sin6->sin6_port, cred, 461 INPLOOKUP_WILDCARD); 462 if (error) 463 return (error); 464 } 465 inp->in6p_laddr = laddr6.sin6_addr; 466 } 467 inp->in6p_faddr = sin6->sin6_addr; 468 inp->inp_fport = sin6->sin6_port; 469 /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 470 inp->inp_flow &= ~IPV6_FLOWLABEL_MASK; 471 if (inp->inp_flags & IN6P_AUTOFLOWLABEL) 472 inp->inp_flow |= 473 (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK); 474 475 if ((inp->inp_flags & INP_INHASHLIST) != 0) { 476 in_pcbrehash(inp); 477 } else { 478 in_pcbinshash(inp); 479 } 480 481 return (0); 482 } 483 484 void 485 in6_pcbdisconnect(struct inpcb *inp) 486 { 487 488 INP_WLOCK_ASSERT(inp); 489 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); 490 KASSERT(inp->inp_smr == SMR_SEQ_INVALID, 491 ("%s: inp %p was already disconnected", __func__, inp)); 492 493 in_pcbremhash_locked(inp); 494 495 /* See the comment in in_pcbinshash(). */ 496 inp->inp_smr = smr_advance(inp->inp_pcbinfo->ipi_smr); 497 498 /* XXX-MJ torn writes are visible to SMR lookup */ 499 memset(&inp->in6p_laddr, 0, sizeof(inp->in6p_laddr)); 500 memset(&inp->in6p_faddr, 0, sizeof(inp->in6p_faddr)); 501 inp->inp_fport = 0; 502 /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 503 inp->inp_flow &= ~IPV6_FLOWLABEL_MASK; 504 } 505 506 struct sockaddr * 507 in6_sockaddr(in_port_t port, struct in6_addr *addr_p) 508 { 509 struct sockaddr_in6 *sin6; 510 511 sin6 = malloc(sizeof *sin6, M_SONAME, M_WAITOK); 512 bzero(sin6, sizeof *sin6); 513 sin6->sin6_family = AF_INET6; 514 sin6->sin6_len = sizeof(*sin6); 515 sin6->sin6_port = port; 516 sin6->sin6_addr = *addr_p; 517 (void)sa6_recoverscope(sin6); /* XXX: should catch errors */ 518 519 return (struct sockaddr *)sin6; 520 } 521 522 struct sockaddr * 523 in6_v4mapsin6_sockaddr(in_port_t port, struct in_addr *addr_p) 524 { 525 struct sockaddr_in sin; 526 struct sockaddr_in6 *sin6_p; 527 528 bzero(&sin, sizeof sin); 529 sin.sin_family = AF_INET; 530 sin.sin_len = sizeof(sin); 531 sin.sin_port = port; 532 sin.sin_addr = *addr_p; 533 534 sin6_p = malloc(sizeof *sin6_p, M_SONAME, 535 M_WAITOK); 536 in6_sin_2_v4mapsin6(&sin, sin6_p); 537 538 return (struct sockaddr *)sin6_p; 539 } 540 541 int 542 in6_getsockaddr(struct socket *so, struct sockaddr **nam) 543 { 544 struct inpcb *inp; 545 struct in6_addr addr; 546 in_port_t port; 547 548 inp = sotoinpcb(so); 549 KASSERT(inp != NULL, ("in6_getsockaddr: inp == NULL")); 550 551 INP_RLOCK(inp); 552 port = inp->inp_lport; 553 addr = inp->in6p_laddr; 554 INP_RUNLOCK(inp); 555 556 *nam = in6_sockaddr(port, &addr); 557 return 0; 558 } 559 560 int 561 in6_getpeeraddr(struct socket *so, struct sockaddr **nam) 562 { 563 struct inpcb *inp; 564 struct in6_addr addr; 565 in_port_t port; 566 567 inp = sotoinpcb(so); 568 KASSERT(inp != NULL, ("in6_getpeeraddr: inp == NULL")); 569 570 INP_RLOCK(inp); 571 port = inp->inp_fport; 572 addr = inp->in6p_faddr; 573 INP_RUNLOCK(inp); 574 575 *nam = in6_sockaddr(port, &addr); 576 return 0; 577 } 578 579 int 580 in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam) 581 { 582 struct inpcb *inp; 583 int error; 584 585 inp = sotoinpcb(so); 586 KASSERT(inp != NULL, ("in6_mapped_sockaddr: inp == NULL")); 587 588 #ifdef INET 589 if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 590 error = in_getsockaddr(so, nam); 591 if (error == 0) 592 in6_sin_2_v4mapsin6_in_sock(nam); 593 } else 594 #endif 595 { 596 /* scope issues will be handled in in6_getsockaddr(). */ 597 error = in6_getsockaddr(so, nam); 598 } 599 600 return error; 601 } 602 603 int 604 in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam) 605 { 606 struct inpcb *inp; 607 int error; 608 609 inp = sotoinpcb(so); 610 KASSERT(inp != NULL, ("in6_mapped_peeraddr: inp == NULL")); 611 612 #ifdef INET 613 if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 614 error = in_getpeeraddr(so, nam); 615 if (error == 0) 616 in6_sin_2_v4mapsin6_in_sock(nam); 617 } else 618 #endif 619 /* scope issues will be handled in in6_getpeeraddr(). */ 620 error = in6_getpeeraddr(so, nam); 621 622 return error; 623 } 624 625 /* 626 * Pass some notification to all connections of a protocol 627 * associated with address dst. The local address and/or port numbers 628 * may be specified to limit the search. The "usual action" will be 629 * taken, depending on the ctlinput cmd. The caller must filter any 630 * cmds that are uninteresting (e.g., no error in the map). 631 * Call the protocol specific routine (if any) to report 632 * any errors for each matching socket. 633 */ 634 static bool 635 inp_match6(const struct inpcb *inp, void *v __unused) 636 { 637 638 return ((inp->inp_vflag & INP_IPV6) != 0); 639 } 640 641 void 642 in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr_in6 *sa6_dst, 643 u_int fport_arg, const struct sockaddr_in6 *src, u_int lport_arg, 644 int errno, void *cmdarg, 645 struct inpcb *(*notify)(struct inpcb *, int)) 646 { 647 struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_WLOCKPCB, 648 inp_match6, NULL); 649 struct inpcb *inp; 650 struct sockaddr_in6 sa6_src; 651 u_short fport = fport_arg, lport = lport_arg; 652 u_int32_t flowinfo; 653 654 if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr)) 655 return; 656 657 /* 658 * note that src can be NULL when we get notify by local fragmentation. 659 */ 660 sa6_src = (src == NULL) ? sa6_any : *src; 661 flowinfo = sa6_src.sin6_flowinfo; 662 663 while ((inp = inp_next(&inpi)) != NULL) { 664 INP_WLOCK_ASSERT(inp); 665 /* 666 * If the error designates a new path MTU for a destination 667 * and the application (associated with this socket) wanted to 668 * know the value, notify. 669 * XXX: should we avoid to notify the value to TCP sockets? 670 */ 671 if (errno == EMSGSIZE && cmdarg != NULL) 672 ip6_notify_pmtu(inp, sa6_dst, *(uint32_t *)cmdarg); 673 674 /* 675 * Detect if we should notify the error. If no source and 676 * destination ports are specified, but non-zero flowinfo and 677 * local address match, notify the error. This is the case 678 * when the error is delivered with an encrypted buffer 679 * by ESP. Otherwise, just compare addresses and ports 680 * as usual. 681 */ 682 if (lport == 0 && fport == 0 && flowinfo && 683 inp->inp_socket != NULL && 684 flowinfo == (inp->inp_flow & IPV6_FLOWLABEL_MASK) && 685 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr)) 686 goto do_notify; 687 else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, 688 &sa6_dst->sin6_addr) || 689 inp->inp_socket == 0 || 690 (lport && inp->inp_lport != lport) || 691 (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) && 692 !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 693 &sa6_src.sin6_addr)) || 694 (fport && inp->inp_fport != fport)) { 695 continue; 696 } 697 698 do_notify: 699 if (notify) 700 (*notify)(inp, errno); 701 } 702 } 703 704 /* 705 * Lookup a PCB based on the local address and port. Caller must hold the 706 * hash lock. No inpcb locks or references are acquired. 707 */ 708 struct inpcb * 709 in6_pcblookup_local(struct inpcbinfo *pcbinfo, struct in6_addr *laddr, 710 u_short lport, int lookupflags, struct ucred *cred) 711 { 712 struct inpcb *inp; 713 int matchwild = 3, wildcard; 714 715 KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0, 716 ("%s: invalid lookup flags %d", __func__, lookupflags)); 717 718 INP_HASH_LOCK_ASSERT(pcbinfo); 719 720 if ((lookupflags & INPLOOKUP_WILDCARD) == 0) { 721 struct inpcbhead *head; 722 /* 723 * Look for an unconnected (wildcard foreign addr) PCB that 724 * matches the local address and port we're looking for. 725 */ 726 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 727 pcbinfo->ipi_hashmask)]; 728 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 729 /* XXX inp locking */ 730 if ((inp->inp_vflag & INP_IPV6) == 0) 731 continue; 732 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 733 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 734 inp->inp_lport == lport) { 735 /* Found. */ 736 if (prison_equal_ip6(cred->cr_prison, 737 inp->inp_cred->cr_prison)) 738 return (inp); 739 } 740 } 741 /* 742 * Not found. 743 */ 744 return (NULL); 745 } else { 746 struct inpcbporthead *porthash; 747 struct inpcbport *phd; 748 struct inpcb *match = NULL; 749 /* 750 * Best fit PCB lookup. 751 * 752 * First see if this local port is in use by looking on the 753 * port hash list. 754 */ 755 porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport, 756 pcbinfo->ipi_porthashmask)]; 757 CK_LIST_FOREACH(phd, porthash, phd_hash) { 758 if (phd->phd_port == lport) 759 break; 760 } 761 if (phd != NULL) { 762 /* 763 * Port is in use by one or more PCBs. Look for best 764 * fit. 765 */ 766 CK_LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) { 767 wildcard = 0; 768 if (!prison_equal_ip6(cred->cr_prison, 769 inp->inp_cred->cr_prison)) 770 continue; 771 /* XXX inp locking */ 772 if ((inp->inp_vflag & INP_IPV6) == 0) 773 continue; 774 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) 775 wildcard++; 776 if (!IN6_IS_ADDR_UNSPECIFIED( 777 &inp->in6p_laddr)) { 778 if (IN6_IS_ADDR_UNSPECIFIED(laddr)) 779 wildcard++; 780 else if (!IN6_ARE_ADDR_EQUAL( 781 &inp->in6p_laddr, laddr)) 782 continue; 783 } else { 784 if (!IN6_IS_ADDR_UNSPECIFIED(laddr)) 785 wildcard++; 786 } 787 if (wildcard < matchwild) { 788 match = inp; 789 matchwild = wildcard; 790 if (matchwild == 0) 791 break; 792 } 793 } 794 } 795 return (match); 796 } 797 } 798 799 static bool 800 in6_multi_match(const struct inpcb *inp, void *v __unused) 801 { 802 803 if ((inp->inp_vflag & INP_IPV6) && inp->in6p_moptions != NULL) 804 return (true); 805 else 806 return (false); 807 } 808 809 void 810 in6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp) 811 { 812 struct inpcb_iterator inpi = INP_ITERATOR(pcbinfo, INPLOOKUP_RLOCKPCB, 813 in6_multi_match, NULL); 814 struct inpcb *inp; 815 struct in6_multi *inm; 816 struct in6_mfilter *imf; 817 struct ip6_moptions *im6o; 818 819 IN6_MULTI_LOCK_ASSERT(); 820 821 while ((inp = inp_next(&inpi)) != NULL) { 822 INP_RLOCK_ASSERT(inp); 823 824 im6o = inp->in6p_moptions; 825 /* 826 * Unselect the outgoing ifp for multicast if it 827 * is being detached. 828 */ 829 if (im6o->im6o_multicast_ifp == ifp) 830 im6o->im6o_multicast_ifp = NULL; 831 /* 832 * Drop multicast group membership if we joined 833 * through the interface being detached. 834 */ 835 restart: 836 IP6_MFILTER_FOREACH(imf, &im6o->im6o_head) { 837 if ((inm = imf->im6f_in6m) == NULL) 838 continue; 839 if (inm->in6m_ifp != ifp) 840 continue; 841 ip6_mfilter_remove(&im6o->im6o_head, imf); 842 in6_leavegroup_locked(inm, NULL); 843 ip6_mfilter_free(imf); 844 goto restart; 845 } 846 } 847 } 848 849 /* 850 * Check for alternatives when higher level complains 851 * about service problems. For now, invalidate cached 852 * routing information. If the route was created dynamically 853 * (by a redirect), time to try a default gateway again. 854 */ 855 void 856 in6_losing(struct inpcb *inp) 857 { 858 859 RO_INVALIDATE_CACHE(&inp->inp_route6); 860 } 861 862 /* 863 * After a routing change, flush old routing 864 * and allocate a (hopefully) better one. 865 */ 866 struct inpcb * 867 in6_rtchange(struct inpcb *inp, int errno __unused) 868 { 869 870 RO_INVALIDATE_CACHE(&inp->inp_route6); 871 return inp; 872 } 873 874 static bool 875 in6_pcblookup_lb_numa_match(const struct inpcblbgroup *grp, int domain) 876 { 877 return (domain == M_NODOM || domain == grp->il_numa_domain); 878 } 879 880 static struct inpcb * 881 in6_pcblookup_lbgroup(const struct inpcbinfo *pcbinfo, 882 const struct in6_addr *faddr, uint16_t fport, const struct in6_addr *laddr, 883 uint16_t lport, uint8_t domain) 884 { 885 const struct inpcblbgrouphead *hdr; 886 struct inpcblbgroup *grp; 887 struct inpcblbgroup *jail_exact, *jail_wild, *local_exact, *local_wild; 888 889 INP_HASH_LOCK_ASSERT(pcbinfo); 890 891 hdr = &pcbinfo->ipi_lbgrouphashbase[ 892 INP_PCBPORTHASH(lport, pcbinfo->ipi_lbgrouphashmask)]; 893 894 /* 895 * Search for an LB group match based on the following criteria: 896 * - prefer jailed groups to non-jailed groups 897 * - prefer exact source address matches to wildcard matches 898 * - prefer groups bound to the specified NUMA domain 899 */ 900 jail_exact = jail_wild = local_exact = local_wild = NULL; 901 CK_LIST_FOREACH(grp, hdr, il_list) { 902 bool injail; 903 904 #ifdef INET 905 if (!(grp->il_vflag & INP_IPV6)) 906 continue; 907 #endif 908 if (grp->il_lport != lport) 909 continue; 910 911 injail = prison_flag(grp->il_cred, PR_IP6) != 0; 912 if (injail && prison_check_ip6_locked(grp->il_cred->cr_prison, 913 laddr) != 0) 914 continue; 915 916 if (IN6_ARE_ADDR_EQUAL(&grp->il6_laddr, laddr)) { 917 if (injail) { 918 jail_exact = grp; 919 if (in6_pcblookup_lb_numa_match(grp, domain)) 920 /* This is a perfect match. */ 921 goto out; 922 } else if (local_exact == NULL || 923 in6_pcblookup_lb_numa_match(grp, domain)) { 924 local_exact = grp; 925 } 926 } else if (IN6_IS_ADDR_UNSPECIFIED(&grp->il6_laddr)) { 927 if (injail) { 928 if (jail_wild == NULL || 929 in6_pcblookup_lb_numa_match(grp, domain)) 930 jail_wild = grp; 931 } else if (local_wild == NULL || 932 in6_pcblookup_lb_numa_match(grp, domain)) { 933 local_wild = grp; 934 } 935 } 936 } 937 938 if (jail_exact != NULL) 939 grp = jail_exact; 940 else if (jail_wild != NULL) 941 grp = jail_wild; 942 else if (local_exact != NULL) 943 grp = local_exact; 944 else 945 grp = local_wild; 946 if (grp == NULL) 947 return (NULL); 948 out: 949 return (grp->il_inp[INP6_PCBLBGROUP_PKTHASH(faddr, lport, fport) % 950 grp->il_inpcnt]); 951 } 952 953 static bool 954 in6_pcblookup_exact_match(const struct inpcb *inp, const struct in6_addr *faddr, 955 u_short fport, const struct in6_addr *laddr, u_short lport) 956 { 957 /* XXX inp locking */ 958 if ((inp->inp_vflag & INP_IPV6) == 0) 959 return (false); 960 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) && 961 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 962 inp->inp_fport == fport && inp->inp_lport == lport) 963 return (true); 964 return (false); 965 } 966 967 static struct inpcb * 968 in6_pcblookup_hash_exact(struct inpcbinfo *pcbinfo, 969 const struct in6_addr *faddr, u_short fport, 970 const struct in6_addr *laddr, u_short lport) 971 { 972 struct inpcbhead *head; 973 struct inpcb *inp; 974 975 INP_HASH_LOCK_ASSERT(pcbinfo); 976 977 /* 978 * First look for an exact match. 979 */ 980 head = &pcbinfo->ipi_hash_exact[INP6_PCBHASH(faddr, lport, fport, 981 pcbinfo->ipi_hashmask)]; 982 CK_LIST_FOREACH(inp, head, inp_hash_exact) { 983 if (in6_pcblookup_exact_match(inp, faddr, fport, laddr, lport)) 984 return (inp); 985 } 986 return (NULL); 987 } 988 989 typedef enum { 990 INPLOOKUP_MATCH_NONE = 0, 991 INPLOOKUP_MATCH_WILD = 1, 992 INPLOOKUP_MATCH_LADDR = 2, 993 } inp_lookup_match_t; 994 995 static inp_lookup_match_t 996 in6_pcblookup_wild_match(const struct inpcb *inp, const struct in6_addr *laddr, 997 u_short lport) 998 { 999 /* XXX inp locking */ 1000 if ((inp->inp_vflag & INP_IPV6) == 0) 1001 return (INPLOOKUP_MATCH_NONE); 1002 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) || 1003 inp->inp_lport != lport) 1004 return (INPLOOKUP_MATCH_NONE); 1005 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 1006 return (INPLOOKUP_MATCH_WILD); 1007 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) 1008 return (INPLOOKUP_MATCH_LADDR); 1009 return (INPLOOKUP_MATCH_NONE); 1010 } 1011 1012 #define INP_LOOKUP_AGAIN ((struct inpcb *)(uintptr_t)-1) 1013 1014 static struct inpcb * 1015 in6_pcblookup_hash_wild_smr(struct inpcbinfo *pcbinfo, 1016 const struct in6_addr *faddr, u_short fport, const struct in6_addr *laddr, 1017 u_short lport, const inp_lookup_t lockflags) 1018 { 1019 struct inpcbhead *head; 1020 struct inpcb *inp; 1021 1022 KASSERT(SMR_ENTERED(pcbinfo->ipi_smr), 1023 ("%s: not in SMR read section", __func__)); 1024 1025 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 1026 pcbinfo->ipi_hashmask)]; 1027 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 1028 inp_lookup_match_t match; 1029 1030 match = in6_pcblookup_wild_match(inp, laddr, lport); 1031 if (match == INPLOOKUP_MATCH_NONE) 1032 continue; 1033 1034 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1035 match = in6_pcblookup_wild_match(inp, laddr, lport); 1036 if (match != INPLOOKUP_MATCH_NONE && 1037 prison_check_ip6_locked(inp->inp_cred->cr_prison, 1038 laddr) == 0) 1039 return (inp); 1040 inp_unlock(inp, lockflags); 1041 } 1042 1043 /* 1044 * The matching socket disappeared out from under us. Fall back 1045 * to a serialized lookup. 1046 */ 1047 return (INP_LOOKUP_AGAIN); 1048 } 1049 return (NULL); 1050 } 1051 1052 static struct inpcb * 1053 in6_pcblookup_hash_wild_locked(struct inpcbinfo *pcbinfo, 1054 const struct in6_addr *faddr, u_short fport, const struct in6_addr *laddr, 1055 u_short lport) 1056 { 1057 struct inpcbhead *head; 1058 struct inpcb *inp, *jail_wild, *local_exact, *local_wild; 1059 1060 INP_HASH_LOCK_ASSERT(pcbinfo); 1061 1062 /* 1063 * Order of socket selection - we always prefer jails. 1064 * 1. jailed, non-wild. 1065 * 2. jailed, wild. 1066 * 3. non-jailed, non-wild. 1067 * 4. non-jailed, wild. 1068 */ 1069 head = &pcbinfo->ipi_hash_wild[INP_PCBHASH_WILD(lport, 1070 pcbinfo->ipi_hashmask)]; 1071 local_wild = local_exact = jail_wild = NULL; 1072 CK_LIST_FOREACH(inp, head, inp_hash_wild) { 1073 inp_lookup_match_t match; 1074 bool injail; 1075 1076 match = in6_pcblookup_wild_match(inp, laddr, lport); 1077 if (match == INPLOOKUP_MATCH_NONE) 1078 continue; 1079 1080 injail = prison_flag(inp->inp_cred, PR_IP6) != 0; 1081 if (injail) { 1082 if (prison_check_ip6_locked( 1083 inp->inp_cred->cr_prison, laddr) != 0) 1084 continue; 1085 } else { 1086 if (local_exact != NULL) 1087 continue; 1088 } 1089 1090 if (match == INPLOOKUP_MATCH_LADDR) { 1091 if (injail) 1092 return (inp); 1093 else 1094 local_exact = inp; 1095 } else { 1096 if (injail) 1097 jail_wild = inp; 1098 else 1099 local_wild = inp; 1100 } 1101 } 1102 1103 if (jail_wild != NULL) 1104 return (jail_wild); 1105 if (local_exact != NULL) 1106 return (local_exact); 1107 if (local_wild != NULL) 1108 return (local_wild); 1109 return (NULL); 1110 } 1111 1112 struct inpcb * 1113 in6_pcblookup_hash_locked(struct inpcbinfo *pcbinfo, 1114 const struct in6_addr *faddr, u_int fport_arg, 1115 const struct in6_addr *laddr, u_int lport_arg, 1116 int lookupflags, uint8_t numa_domain) 1117 { 1118 struct inpcb *inp; 1119 u_short fport = fport_arg, lport = lport_arg; 1120 1121 KASSERT((lookupflags & ~INPLOOKUP_WILDCARD) == 0, 1122 ("%s: invalid lookup flags %d", __func__, lookupflags)); 1123 KASSERT(!IN6_IS_ADDR_UNSPECIFIED(faddr), 1124 ("%s: invalid foreign address", __func__)); 1125 KASSERT(!IN6_IS_ADDR_UNSPECIFIED(laddr), 1126 ("%s: invalid local address", __func__)); 1127 INP_HASH_LOCK_ASSERT(pcbinfo); 1128 1129 inp = in6_pcblookup_hash_exact(pcbinfo, faddr, fport, laddr, lport); 1130 if (inp != NULL) 1131 return (inp); 1132 1133 if ((lookupflags & INPLOOKUP_WILDCARD) != 0) { 1134 inp = in6_pcblookup_lbgroup(pcbinfo, faddr, fport, laddr, 1135 lport, numa_domain); 1136 if (inp == NULL) { 1137 inp = in6_pcblookup_hash_wild_locked(pcbinfo, faddr, 1138 fport, laddr, lport); 1139 } 1140 } 1141 return (inp); 1142 } 1143 1144 static struct inpcb * 1145 in6_pcblookup_hash(struct inpcbinfo *pcbinfo, const struct in6_addr *faddr, 1146 u_int fport, const struct in6_addr *laddr, u_int lport, int lookupflags, 1147 uint8_t numa_domain) 1148 { 1149 struct inpcb *inp; 1150 const inp_lookup_t lockflags = lookupflags & INPLOOKUP_LOCKMASK; 1151 1152 KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0, 1153 ("%s: LOCKPCB not set", __func__)); 1154 1155 INP_HASH_WLOCK(pcbinfo); 1156 inp = in6_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport, 1157 lookupflags & ~INPLOOKUP_LOCKMASK, numa_domain); 1158 if (inp != NULL && !inp_trylock(inp, lockflags)) { 1159 in_pcbref(inp); 1160 INP_HASH_WUNLOCK(pcbinfo); 1161 inp_lock(inp, lockflags); 1162 if (in_pcbrele(inp, lockflags)) 1163 /* XXX-MJ or retry until we get a negative match? */ 1164 inp = NULL; 1165 } else { 1166 INP_HASH_WUNLOCK(pcbinfo); 1167 } 1168 return (inp); 1169 } 1170 1171 static struct inpcb * 1172 in6_pcblookup_hash_smr(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 1173 u_int fport_arg, struct in6_addr *laddr, u_int lport_arg, int lookupflags, 1174 uint8_t numa_domain) 1175 { 1176 struct inpcb *inp; 1177 const inp_lookup_t lockflags = lookupflags & INPLOOKUP_LOCKMASK; 1178 const u_short fport = fport_arg, lport = lport_arg; 1179 1180 KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0, 1181 ("%s: invalid lookup flags %d", __func__, lookupflags)); 1182 KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0, 1183 ("%s: LOCKPCB not set", __func__)); 1184 1185 smr_enter(pcbinfo->ipi_smr); 1186 inp = in6_pcblookup_hash_exact(pcbinfo, faddr, fport, laddr, lport); 1187 if (inp != NULL) { 1188 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1189 if (__predict_true(in6_pcblookup_exact_match(inp, 1190 faddr, fport, laddr, lport))) 1191 return (inp); 1192 inp_unlock(inp, lockflags); 1193 } 1194 /* 1195 * We failed to lock the inpcb, or its connection state changed 1196 * out from under us. Fall back to a precise search. 1197 */ 1198 return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport, 1199 lookupflags, numa_domain)); 1200 } 1201 1202 if ((lookupflags & INPLOOKUP_WILDCARD) != 0) { 1203 inp = in6_pcblookup_lbgroup(pcbinfo, faddr, fport, 1204 laddr, lport, numa_domain); 1205 if (inp != NULL) { 1206 if (__predict_true(inp_smr_lock(inp, lockflags))) { 1207 if (__predict_true(in6_pcblookup_wild_match(inp, 1208 laddr, lport) != INPLOOKUP_MATCH_NONE)) 1209 return (inp); 1210 inp_unlock(inp, lockflags); 1211 } 1212 inp = INP_LOOKUP_AGAIN; 1213 } else { 1214 inp = in6_pcblookup_hash_wild_smr(pcbinfo, faddr, fport, 1215 laddr, lport, lockflags); 1216 } 1217 if (inp == INP_LOOKUP_AGAIN) { 1218 return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, 1219 lport, lookupflags, numa_domain)); 1220 } 1221 } 1222 1223 if (inp == NULL) 1224 smr_exit(pcbinfo->ipi_smr); 1225 1226 return (inp); 1227 } 1228 1229 /* 1230 * Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf 1231 * from which a pre-calculated hash value may be extracted. 1232 */ 1233 struct inpcb * 1234 in6_pcblookup(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, u_int fport, 1235 struct in6_addr *laddr, u_int lport, int lookupflags, 1236 struct ifnet *ifp __unused) 1237 { 1238 return (in6_pcblookup_hash_smr(pcbinfo, faddr, fport, laddr, lport, 1239 lookupflags, M_NODOM)); 1240 } 1241 1242 struct inpcb * 1243 in6_pcblookup_mbuf(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 1244 u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags, 1245 struct ifnet *ifp __unused, struct mbuf *m) 1246 { 1247 return (in6_pcblookup_hash_smr(pcbinfo, faddr, fport, laddr, lport, 1248 lookupflags, m->m_pkthdr.numa_domain)); 1249 } 1250 1251 void 1252 init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m, int srcordst) 1253 { 1254 struct ip6_hdr *ip; 1255 1256 ip = mtod(m, struct ip6_hdr *); 1257 bzero(sin6, sizeof(*sin6)); 1258 sin6->sin6_len = sizeof(*sin6); 1259 sin6->sin6_family = AF_INET6; 1260 sin6->sin6_addr = srcordst ? ip->ip6_dst : ip->ip6_src; 1261 1262 (void)sa6_recoverscope(sin6); /* XXX: should catch errors... */ 1263 1264 return; 1265 } 1266