in_pcb.c revision 1.38
1 /* $NetBSD: in_pcb.c,v 1.38 1997/09/22 21:39:40 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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 * @(#)in_pcb.c 8.2 (Berkeley) 1/4/94 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/malloc.h> 41 #include <sys/mbuf.h> 42 #include <sys/protosw.h> 43 #include <sys/socket.h> 44 #include <sys/socketvar.h> 45 #include <sys/ioctl.h> 46 #include <sys/errno.h> 47 #include <sys/time.h> 48 #include <sys/proc.h> 49 50 #include <net/if.h> 51 #include <net/route.h> 52 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/ip.h> 56 #include <netinet/in_pcb.h> 57 #include <netinet/in_var.h> 58 #include <netinet/ip_var.h> 59 60 struct in_addr zeroin_addr; 61 62 #define INPCBHASH_BIND(table, laddr, lport) \ 63 &(table)->inpt_bindhashtbl[ \ 64 ((ntohl((laddr).s_addr) + ntohs(lport))) & (table)->inpt_bindhash] 65 #define INPCBHASH_CONNECT(table, faddr, fport, laddr, lport) \ 66 &(table)->inpt_connecthashtbl[ \ 67 ((ntohl((faddr).s_addr) + ntohs(fport)) + \ 68 (ntohl((laddr).s_addr) + ntohs(lport))) & (table)->inpt_connecthash] 69 70 struct inpcb * 71 in_pcblookup_port __P((struct inpcbtable *, 72 struct in_addr, u_int, int)); 73 74 void 75 in_pcbinit(table, bindhashsize, connecthashsize) 76 struct inpcbtable *table; 77 int bindhashsize, connecthashsize; 78 { 79 80 CIRCLEQ_INIT(&table->inpt_queue); 81 table->inpt_bindhashtbl = 82 hashinit(bindhashsize, M_PCB, &table->inpt_bindhash); 83 table->inpt_connecthashtbl = 84 hashinit(connecthashsize, M_PCB, &table->inpt_connecthash); 85 table->inpt_lastport = IPPORT_RESERVED; 86 } 87 88 int 89 in_pcballoc(so, v) 90 struct socket *so; 91 void *v; 92 { 93 struct inpcbtable *table = v; 94 register struct inpcb *inp; 95 int s; 96 97 MALLOC(inp, struct inpcb *, sizeof(*inp), M_PCB, M_WAITOK); 98 if (inp == NULL) 99 return (ENOBUFS); 100 bzero((caddr_t)inp, sizeof(*inp)); 101 inp->inp_table = table; 102 inp->inp_socket = so; 103 so->so_pcb = inp; 104 s = splnet(); 105 CIRCLEQ_INSERT_HEAD(&table->inpt_queue, inp, inp_queue); 106 in_pcbstate(inp, INP_ATTACHED); 107 splx(s); 108 return (0); 109 } 110 111 int 112 in_pcbbind(v, nam, p) 113 void *v; 114 struct mbuf *nam; 115 struct proc *p; 116 { 117 register struct inpcb *inp = v; 118 register struct socket *so = inp->inp_socket; 119 register struct inpcbtable *table = inp->inp_table; 120 register struct sockaddr_in *sin; 121 u_int16_t lport = 0; 122 int wild = 0, reuseport = (so->so_options & SO_REUSEPORT); 123 int error; 124 125 if (in_ifaddr.tqh_first == 0) 126 return (EADDRNOTAVAIL); 127 if (inp->inp_lport || !in_nullhost(inp->inp_laddr)) 128 return (EINVAL); 129 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0 && 130 ((so->so_proto->pr_flags & PR_CONNREQUIRED) == 0 || 131 (so->so_options & SO_ACCEPTCONN) == 0)) 132 wild = INPLOOKUP_WILDCARD; 133 if (nam == 0) 134 goto noname; 135 sin = mtod(nam, struct sockaddr_in *); 136 if (nam->m_len != sizeof (*sin)) 137 return (EINVAL); 138 #ifdef notdef 139 /* 140 * We should check the family, but old programs 141 * incorrectly fail to initialize it. 142 */ 143 if (sin->sin_family != AF_INET) 144 return (EAFNOSUPPORT); 145 #endif 146 lport = sin->sin_port; 147 if (IN_MULTICAST(sin->sin_addr.s_addr)) { 148 /* 149 * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 150 * allow complete duplication of binding if 151 * SO_REUSEPORT is set, or if SO_REUSEADDR is set 152 * and a multicast address is bound on both 153 * new and duplicated sockets. 154 */ 155 if (so->so_options & SO_REUSEADDR) 156 reuseport = SO_REUSEADDR|SO_REUSEPORT; 157 } else if (!in_nullhost(sin->sin_addr)) { 158 sin->sin_port = 0; /* yech... */ 159 if (ifa_ifwithaddr(sintosa(sin)) == 0) 160 return (EADDRNOTAVAIL); 161 } 162 if (lport) { 163 struct inpcb *t; 164 #ifndef IPNOPRIVPORTS 165 /* GROSS */ 166 if (ntohs(lport) < IPPORT_RESERVED && 167 (p == 0 || (error = suser(p->p_ucred, &p->p_acflag)))) 168 return (EACCES); 169 #endif 170 t = in_pcblookup_port(table, sin->sin_addr, lport, wild); 171 if (t && (reuseport & t->inp_socket->so_options) == 0) 172 return (EADDRINUSE); 173 } 174 inp->inp_laddr = sin->sin_addr; 175 noname: 176 if (lport == 0) { 177 for (lport = table->inpt_lastport + 1; 178 lport < IPPORT_USERRESERVED; lport++) 179 if (!in_pcblookup_port(table, inp->inp_laddr, 180 htons(lport), wild)) 181 goto found; 182 for (lport = IPPORT_RESERVED; 183 lport <= table->inpt_lastport; lport++) 184 if (!in_pcblookup_port(table, inp->inp_laddr, 185 htons(lport), wild)) 186 goto found; 187 return (EAGAIN); 188 found: 189 table->inpt_lastport = lport; 190 lport = htons(lport); 191 } 192 inp->inp_lport = lport; 193 in_pcbstate(inp, INP_BOUND); 194 return (0); 195 } 196 197 /* 198 * Connect from a socket to a specified address. 199 * Both address and port must be specified in argument sin. 200 * If don't have a local address for this socket yet, 201 * then pick one. 202 */ 203 int 204 in_pcbconnect(v, nam) 205 register void *v; 206 struct mbuf *nam; 207 { 208 register struct inpcb *inp = v; 209 struct in_ifaddr *ia; 210 struct sockaddr_in *ifaddr = NULL; 211 register struct sockaddr_in *sin = mtod(nam, struct sockaddr_in *); 212 213 if (nam->m_len != sizeof (*sin)) 214 return (EINVAL); 215 if (sin->sin_family != AF_INET) 216 return (EAFNOSUPPORT); 217 if (sin->sin_port == 0) 218 return (EADDRNOTAVAIL); 219 if (in_ifaddr.tqh_first != 0) { 220 /* 221 * If the destination address is INADDR_ANY, 222 * use the primary local address. 223 * If the supplied address is INADDR_BROADCAST, 224 * and the primary interface supports broadcast, 225 * choose the broadcast address for that interface. 226 */ 227 if (in_nullhost(sin->sin_addr)) 228 sin->sin_addr = in_ifaddr.tqh_first->ia_addr.sin_addr; 229 else if (sin->sin_addr.s_addr == INADDR_BROADCAST && 230 (in_ifaddr.tqh_first->ia_ifp->if_flags & IFF_BROADCAST)) 231 sin->sin_addr = in_ifaddr.tqh_first->ia_broadaddr.sin_addr; 232 } 233 /* 234 * If we haven't bound which network number to use as ours, 235 * we will use the number of the outgoing interface. 236 * This depends on having done a routing lookup, which 237 * we will probably have to do anyway, so we might 238 * as well do it now. On the other hand if we are 239 * sending to multiple destinations we may have already 240 * done the lookup, so see if we can use the route 241 * from before. In any case, we only 242 * chose a port number once, even if sending to multiple 243 * destinations. 244 */ 245 if (in_nullhost(inp->inp_laddr)) { 246 register struct route *ro; 247 248 ia = (struct in_ifaddr *)0; 249 /* 250 * If route is known or can be allocated now, 251 * our src addr is taken from the i/f, else punt. 252 */ 253 ro = &inp->inp_route; 254 if (ro->ro_rt && 255 (!in_hosteq(satosin(&ro->ro_dst)->sin_addr, 256 sin->sin_addr) || 257 inp->inp_socket->so_options & SO_DONTROUTE)) { 258 RTFREE(ro->ro_rt); 259 ro->ro_rt = (struct rtentry *)0; 260 } 261 if ((inp->inp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/ 262 (ro->ro_rt == (struct rtentry *)0 || 263 ro->ro_rt->rt_ifp == (struct ifnet *)0)) { 264 /* No route yet, so try to acquire one */ 265 ro->ro_dst.sa_family = AF_INET; 266 ro->ro_dst.sa_len = sizeof(struct sockaddr_in); 267 satosin(&ro->ro_dst)->sin_addr = sin->sin_addr; 268 rtalloc(ro); 269 } 270 /* 271 * If we found a route, use the address 272 * corresponding to the outgoing interface 273 * unless it is the loopback (in case a route 274 * to our address on another net goes to loopback). 275 */ 276 if (ro->ro_rt && !(ro->ro_rt->rt_ifp->if_flags & IFF_LOOPBACK)) 277 ia = ifatoia(ro->ro_rt->rt_ifa); 278 if (ia == 0) { 279 u_int16_t fport = sin->sin_port; 280 281 sin->sin_port = 0; 282 ia = ifatoia(ifa_ifwithladdr(sintosa(sin))); 283 sin->sin_port = fport; 284 if (ia == 0) 285 ia = in_ifaddr.tqh_first; 286 if (ia == 0) 287 return (EADDRNOTAVAIL); 288 } 289 /* 290 * If the destination address is multicast and an outgoing 291 * interface has been set as a multicast option, use the 292 * address of that interface as our source address. 293 */ 294 if (IN_MULTICAST(sin->sin_addr.s_addr) && 295 inp->inp_moptions != NULL) { 296 struct ip_moptions *imo; 297 struct ifnet *ifp; 298 299 imo = inp->inp_moptions; 300 if (imo->imo_multicast_ifp != NULL) { 301 ifp = imo->imo_multicast_ifp; 302 for (ia = in_ifaddr.tqh_first; ia != 0; 303 ia = ia->ia_list.tqe_next) 304 if (ia->ia_ifp == ifp) 305 break; 306 if (ia == 0) 307 return (EADDRNOTAVAIL); 308 } 309 } 310 ifaddr = satosin(&ia->ia_addr); 311 } 312 if (in_pcblookup_connect(inp->inp_table, sin->sin_addr, sin->sin_port, 313 !in_nullhost(inp->inp_laddr) ? inp->inp_laddr : ifaddr->sin_addr, 314 inp->inp_lport) != 0) 315 return (EADDRINUSE); 316 if (in_nullhost(inp->inp_laddr)) { 317 if (inp->inp_lport == 0) 318 (void)in_pcbbind(inp, (struct mbuf *)0, 319 (struct proc *)0); 320 inp->inp_laddr = ifaddr->sin_addr; 321 } 322 inp->inp_faddr = sin->sin_addr; 323 inp->inp_fport = sin->sin_port; 324 in_pcbstate(inp, INP_CONNECTED); 325 return (0); 326 } 327 328 void 329 in_pcbdisconnect(v) 330 void *v; 331 { 332 struct inpcb *inp = v; 333 334 inp->inp_faddr = zeroin_addr; 335 inp->inp_fport = 0; 336 in_pcbstate(inp, INP_BOUND); 337 if (inp->inp_socket->so_state & SS_NOFDREF) 338 in_pcbdetach(inp); 339 } 340 341 void 342 in_pcbdetach(v) 343 void *v; 344 { 345 struct inpcb *inp = v; 346 struct socket *so = inp->inp_socket; 347 int s; 348 349 so->so_pcb = 0; 350 sofree(so); 351 if (inp->inp_options) 352 (void)m_free(inp->inp_options); 353 if (inp->inp_route.ro_rt) 354 rtfree(inp->inp_route.ro_rt); 355 ip_freemoptions(inp->inp_moptions); 356 s = splnet(); 357 in_pcbstate(inp, INP_ATTACHED); 358 CIRCLEQ_REMOVE(&inp->inp_table->inpt_queue, inp, inp_queue); 359 splx(s); 360 FREE(inp, M_PCB); 361 } 362 363 void 364 in_setsockaddr(inp, nam) 365 register struct inpcb *inp; 366 struct mbuf *nam; 367 { 368 register struct sockaddr_in *sin; 369 370 nam->m_len = sizeof (*sin); 371 sin = mtod(nam, struct sockaddr_in *); 372 bzero((caddr_t)sin, sizeof (*sin)); 373 sin->sin_family = AF_INET; 374 sin->sin_len = sizeof(*sin); 375 sin->sin_port = inp->inp_lport; 376 sin->sin_addr = inp->inp_laddr; 377 } 378 379 void 380 in_setpeeraddr(inp, nam) 381 struct inpcb *inp; 382 struct mbuf *nam; 383 { 384 register struct sockaddr_in *sin; 385 386 nam->m_len = sizeof (*sin); 387 sin = mtod(nam, struct sockaddr_in *); 388 bzero((caddr_t)sin, sizeof (*sin)); 389 sin->sin_family = AF_INET; 390 sin->sin_len = sizeof(*sin); 391 sin->sin_port = inp->inp_fport; 392 sin->sin_addr = inp->inp_faddr; 393 } 394 395 /* 396 * Pass some notification to all connections of a protocol 397 * associated with address dst. The local address and/or port numbers 398 * may be specified to limit the search. The "usual action" will be 399 * taken, depending on the ctlinput cmd. The caller must filter any 400 * cmds that are uninteresting (e.g., no error in the map). 401 * Call the protocol specific routine (if any) to report 402 * any errors for each matching socket. 403 * 404 * Must be called at splsoftnet. 405 */ 406 int 407 in_pcbnotify(table, faddr, fport_arg, laddr, lport_arg, errno, notify) 408 struct inpcbtable *table; 409 struct in_addr faddr, laddr; 410 u_int fport_arg, lport_arg; 411 int errno; 412 void (*notify) __P((struct inpcb *, int)); 413 { 414 struct inpcbhead *head; 415 register struct inpcb *inp, *ninp; 416 u_int16_t fport = fport_arg, lport = lport_arg; 417 int nmatch; 418 419 if (in_nullhost(faddr) || notify == 0) 420 return (0); 421 422 nmatch = 0; 423 head = INPCBHASH_CONNECT(table, faddr, fport, laddr, lport); 424 for (inp = head->lh_first; inp != NULL; inp = ninp) { 425 ninp = inp->inp_hash.le_next; 426 if (in_hosteq(inp->inp_faddr, faddr) && 427 inp->inp_fport == fport && 428 inp->inp_lport == lport && 429 in_hosteq(inp->inp_laddr, laddr)) { 430 (*notify)(inp, errno); 431 nmatch++; 432 } 433 } 434 return (nmatch); 435 } 436 437 void 438 in_pcbnotifyall(table, faddr, errno, notify) 439 struct inpcbtable *table; 440 struct in_addr faddr; 441 int errno; 442 void (*notify) __P((struct inpcb *, int)); 443 { 444 register struct inpcb *inp, *ninp; 445 446 if (in_nullhost(faddr) || notify == 0) 447 return; 448 449 for (inp = table->inpt_queue.cqh_first; 450 inp != (struct inpcb *)&table->inpt_queue; 451 inp = ninp) { 452 ninp = inp->inp_queue.cqe_next; 453 if (in_hosteq(inp->inp_faddr, faddr)) 454 (*notify)(inp, errno); 455 } 456 } 457 458 /* 459 * Check for alternatives when higher level complains 460 * about service problems. For now, invalidate cached 461 * routing information. If the route was created dynamically 462 * (by a redirect), time to try a default gateway again. 463 */ 464 void 465 in_losing(inp) 466 struct inpcb *inp; 467 { 468 register struct rtentry *rt; 469 struct rt_addrinfo info; 470 471 if ((rt = inp->inp_route.ro_rt)) { 472 inp->inp_route.ro_rt = 0; 473 bzero((caddr_t)&info, sizeof(info)); 474 info.rti_info[RTAX_DST] = &inp->inp_route.ro_dst; 475 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 476 info.rti_info[RTAX_NETMASK] = rt_mask(rt); 477 rt_missmsg(RTM_LOSING, &info, rt->rt_flags, 0); 478 if (rt->rt_flags & RTF_DYNAMIC) 479 (void) rtrequest(RTM_DELETE, rt_key(rt), 480 rt->rt_gateway, rt_mask(rt), rt->rt_flags, 481 (struct rtentry **)0); 482 else 483 /* 484 * A new route can be allocated 485 * the next time output is attempted. 486 */ 487 rtfree(rt); 488 } 489 } 490 491 /* 492 * After a routing change, flush old routing 493 * and allocate a (hopefully) better one. 494 */ 495 void 496 in_rtchange(inp, errno) 497 register struct inpcb *inp; 498 int errno; 499 { 500 501 if (inp->inp_route.ro_rt) { 502 rtfree(inp->inp_route.ro_rt); 503 inp->inp_route.ro_rt = 0; 504 /* 505 * A new route can be allocated the next time 506 * output is attempted. 507 */ 508 } 509 /* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */ 510 } 511 512 struct inpcb * 513 in_pcblookup_port(table, laddr, lport_arg, flags) 514 struct inpcbtable *table; 515 struct in_addr laddr; 516 u_int lport_arg; 517 int flags; 518 { 519 register struct inpcb *inp, *match = 0; 520 int matchwild = 3, wildcard; 521 u_int16_t lport = lport_arg; 522 523 for (inp = table->inpt_queue.cqh_first; 524 inp != (struct inpcb *)&table->inpt_queue; 525 inp = inp->inp_queue.cqe_next) { 526 if (inp->inp_lport != lport) 527 continue; 528 wildcard = 0; 529 if (!in_nullhost(inp->inp_faddr)) 530 wildcard++; 531 if (in_nullhost(inp->inp_laddr)) { 532 if (!in_nullhost(laddr)) 533 wildcard++; 534 } else { 535 if (in_nullhost(laddr)) 536 wildcard++; 537 else { 538 if (!in_hosteq(inp->inp_laddr, laddr)) 539 continue; 540 } 541 } 542 if (wildcard && (flags & INPLOOKUP_WILDCARD) == 0) 543 continue; 544 if (wildcard < matchwild) { 545 match = inp; 546 matchwild = wildcard; 547 if (matchwild == 0) 548 break; 549 } 550 } 551 return (match); 552 } 553 554 #ifdef DIAGNOSTIC 555 int in_pcbnotifymiss = 0; 556 #endif 557 558 struct inpcb * 559 in_pcblookup_connect(table, faddr, fport_arg, laddr, lport_arg) 560 struct inpcbtable *table; 561 struct in_addr faddr, laddr; 562 u_int fport_arg, lport_arg; 563 { 564 struct inpcbhead *head; 565 register struct inpcb *inp; 566 u_int16_t fport = fport_arg, lport = lport_arg; 567 568 head = INPCBHASH_CONNECT(table, faddr, fport, laddr, lport); 569 for (inp = head->lh_first; inp != NULL; inp = inp->inp_hash.le_next) { 570 if (in_hosteq(inp->inp_faddr, faddr) && 571 inp->inp_fport == fport && 572 inp->inp_lport == lport && 573 in_hosteq(inp->inp_laddr, laddr)) 574 goto out; 575 } 576 #ifdef DIAGNOSTIC 577 if (in_pcbnotifymiss) { 578 printf("in_pcblookup_connect: faddr=%08x fport=%d laddr=%08x lport=%d\n", 579 ntohl(faddr.s_addr), ntohs(fport), 580 ntohl(laddr.s_addr), ntohs(lport)); 581 } 582 #endif 583 return (0); 584 585 out: 586 /* Move this PCB to the head of hash chain. */ 587 if (inp != head->lh_first) { 588 LIST_REMOVE(inp, inp_hash); 589 LIST_INSERT_HEAD(head, inp, inp_hash); 590 } 591 return (inp); 592 } 593 594 struct inpcb * 595 in_pcblookup_bind(table, laddr, lport_arg) 596 struct inpcbtable *table; 597 struct in_addr laddr; 598 u_int lport_arg; 599 { 600 struct inpcbhead *head; 601 register struct inpcb *inp; 602 u_int16_t lport = lport_arg; 603 604 head = INPCBHASH_BIND(table, laddr, lport); 605 for (inp = head->lh_first; inp != NULL; inp = inp->inp_hash.le_next) { 606 if (inp->inp_lport == lport && 607 in_hosteq(inp->inp_laddr, laddr)) 608 goto out; 609 } 610 head = INPCBHASH_BIND(table, zeroin_addr, lport); 611 for (inp = head->lh_first; inp != NULL; inp = inp->inp_hash.le_next) { 612 if (inp->inp_lport == lport && 613 in_hosteq(inp->inp_laddr, zeroin_addr)) 614 goto out; 615 } 616 #ifdef DIAGNOSTIC 617 if (in_pcbnotifymiss) { 618 printf("in_pcblookup_bind: laddr=%08x lport=%d\n", 619 ntohl(laddr.s_addr), ntohs(lport)); 620 } 621 #endif 622 return (0); 623 624 out: 625 /* Move this PCB to the head of hash chain. */ 626 if (inp != head->lh_first) { 627 LIST_REMOVE(inp, inp_hash); 628 LIST_INSERT_HEAD(head, inp, inp_hash); 629 } 630 return (inp); 631 } 632 633 void 634 in_pcbstate(inp, state) 635 struct inpcb *inp; 636 int state; 637 { 638 639 if (inp->inp_state > INP_ATTACHED) 640 LIST_REMOVE(inp, inp_hash); 641 642 switch (state) { 643 case INP_BOUND: 644 LIST_INSERT_HEAD(INPCBHASH_BIND(inp->inp_table, 645 inp->inp_laddr, inp->inp_lport), inp, inp_hash); 646 break; 647 case INP_CONNECTED: 648 LIST_INSERT_HEAD(INPCBHASH_CONNECT(inp->inp_table, 649 inp->inp_faddr, inp->inp_fport, 650 inp->inp_laddr, inp->inp_lport), inp, inp_hash); 651 break; 652 } 653 654 inp->inp_state = state; 655 } 656 657 struct rtentry * 658 in_pcbrtentry(inp) 659 struct inpcb *inp; 660 { 661 struct route *ro; 662 663 ro = &inp->inp_route; 664 665 if (ro->ro_rt == NULL) { 666 /* 667 * No route yet, so try to acquire one. 668 */ 669 if (!in_nullhost(inp->inp_faddr)) { 670 ro->ro_dst.sa_family = AF_INET; 671 ro->ro_dst.sa_len = sizeof(ro->ro_dst); 672 satosin(&ro->ro_dst)->sin_addr = inp->inp_faddr; 673 rtalloc(ro); 674 } 675 } 676 return (ro->ro_rt); 677 } 678
Indexes created Tue Sep 23 13:09:54 GMT 2025