tcp_usrreq.c revision 1.196
1 /* $NetBSD: tcp_usrreq.c,v 1.196 2014/08/05 05:24:26 rtr Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * 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. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1997, 1998, 2005, 2006 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Jason R. Thorpe and Kevin M. Lahey of the Numerical Aerospace Simulation 38 * Facility, NASA Ames Research Center. 39 * This code is derived from software contributed to The NetBSD Foundation 40 * by Charles M. Hannum. 41 * This code is derived from software contributed to The NetBSD Foundation 42 * by Rui Paulo. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 54 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 55 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 56 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 57 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 58 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 59 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 60 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 61 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 62 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 63 * POSSIBILITY OF SUCH DAMAGE. 64 */ 65 66 /* 67 * Copyright (c) 1982, 1986, 1988, 1993, 1995 68 * The Regents of the University of California. All rights reserved. 69 * 70 * Redistribution and use in source and binary forms, with or without 71 * modification, are permitted provided that the following conditions 72 * are met: 73 * 1. Redistributions of source code must retain the above copyright 74 * notice, this list of conditions and the following disclaimer. 75 * 2. Redistributions in binary form must reproduce the above copyright 76 * notice, this list of conditions and the following disclaimer in the 77 * documentation and/or other materials provided with the distribution. 78 * 3. Neither the name of the University nor the names of its contributors 79 * may be used to endorse or promote products derived from this software 80 * without specific prior written permission. 81 * 82 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 83 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 84 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 85 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 86 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 87 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 88 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 89 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 90 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 91 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 92 * SUCH DAMAGE. 93 * 94 * @(#)tcp_usrreq.c 8.5 (Berkeley) 6/21/95 95 */ 96 97 /* 98 * TCP protocol interface to socket abstraction. 99 */ 100 101 #include <sys/cdefs.h> 102 __KERNEL_RCSID(0, "$NetBSD: tcp_usrreq.c,v 1.196 2014/08/05 05:24:26 rtr Exp $"); 103 104 #include "opt_inet.h" 105 #include "opt_ipsec.h" 106 #include "opt_tcp_debug.h" 107 #include "opt_mbuftrace.h" 108 109 #include <sys/param.h> 110 #include <sys/systm.h> 111 #include <sys/kernel.h> 112 #include <sys/malloc.h> 113 #include <sys/mbuf.h> 114 #include <sys/socket.h> 115 #include <sys/socketvar.h> 116 #include <sys/protosw.h> 117 #include <sys/errno.h> 118 #include <sys/stat.h> 119 #include <sys/proc.h> 120 #include <sys/domain.h> 121 #include <sys/sysctl.h> 122 #include <sys/kauth.h> 123 #include <sys/uidinfo.h> 124 125 #include <net/if.h> 126 #include <net/route.h> 127 128 #include <netinet/in.h> 129 #include <netinet/in_systm.h> 130 #include <netinet/in_var.h> 131 #include <netinet/ip.h> 132 #include <netinet/in_pcb.h> 133 #include <netinet/ip_var.h> 134 #include <netinet/in_offload.h> 135 136 #ifdef INET6 137 #ifndef INET 138 #include <netinet/in.h> 139 #endif 140 #include <netinet/ip6.h> 141 #include <netinet6/in6_pcb.h> 142 #include <netinet6/ip6_var.h> 143 #include <netinet6/scope6_var.h> 144 #endif 145 146 #include <netinet/tcp.h> 147 #include <netinet/tcp_fsm.h> 148 #include <netinet/tcp_seq.h> 149 #include <netinet/tcp_timer.h> 150 #include <netinet/tcp_var.h> 151 #include <netinet/tcp_private.h> 152 #include <netinet/tcp_congctl.h> 153 #include <netinet/tcpip.h> 154 #include <netinet/tcp_debug.h> 155 #include <netinet/tcp_vtw.h> 156 157 #include "opt_tcp_space.h" 158 159 static int 160 tcp_debug_capture(struct tcpcb *tp, int req) 161 { 162 #ifdef KPROF 163 tcp_acounts[tp->t_state][req]++; 164 #endif 165 #ifdef TCP_DEBUG 166 return tp->t_state; 167 #endif 168 return 0; 169 } 170 171 static inline void 172 tcp_debug_trace(struct socket *so, struct tcpcb *tp, int ostate, int req) 173 { 174 #ifdef TCP_DEBUG 175 if (tp && (so->so_options & SO_DEBUG)) 176 tcp_trace(TA_USER, ostate, tp, NULL, req); 177 #endif 178 } 179 180 static int 181 tcp_getpcb(struct socket *so, struct inpcb **inp, 182 struct in6pcb **in6p, struct tcpcb **tp) 183 { 184 /* 185 * When a TCP is attached to a socket, then there will be 186 * a (struct inpcb) pointed at by the socket, and this 187 * structure will point at a subsidary (struct tcpcb). 188 */ 189 switch (so->so_proto->pr_domain->dom_family) { 190 #ifdef INET 191 case PF_INET: 192 *inp = sotoinpcb(so); 193 if (*inp == NULL) 194 return EINVAL; 195 *tp = intotcpcb(*inp); 196 break; 197 #endif 198 #ifdef INET6 199 case PF_INET6: 200 *in6p = sotoin6pcb(so); 201 if (*in6p == NULL) 202 return EINVAL; 203 *tp = in6totcpcb(*in6p); 204 break; 205 #endif 206 default: 207 return EAFNOSUPPORT; 208 } 209 210 KASSERT(tp != NULL); 211 212 return 0; 213 } 214 215 /* 216 * Process a TCP user request for TCP tb. If this is a send request 217 * then m is the mbuf chain of send data. If this is a timer expiration 218 * (called from the software clock routine), then timertype tells which timer. 219 */ 220 static int 221 tcp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam, 222 struct mbuf *control, struct lwp *l) 223 { 224 struct inpcb *inp = NULL; 225 struct in6pcb *in6p = NULL; 226 struct tcpcb *tp = NULL; 227 int s; 228 int error = 0; 229 int ostate = 0; 230 231 KASSERT(req != PRU_ATTACH); 232 KASSERT(req != PRU_DETACH); 233 KASSERT(req != PRU_ACCEPT); 234 KASSERT(req != PRU_BIND); 235 KASSERT(req != PRU_LISTEN); 236 KASSERT(req != PRU_CONNECT); 237 KASSERT(req != PRU_DISCONNECT); 238 KASSERT(req != PRU_SHUTDOWN); 239 KASSERT(req != PRU_ABORT); 240 KASSERT(req != PRU_CONTROL); 241 KASSERT(req != PRU_SENSE); 242 KASSERT(req != PRU_PEERADDR); 243 KASSERT(req != PRU_SOCKADDR); 244 KASSERT(req != PRU_RCVOOB); 245 KASSERT(req != PRU_SENDOOB); 246 247 s = splsoftnet(); 248 249 if (req == PRU_PURGEIF) { 250 mutex_enter(softnet_lock); 251 switch (so->so_proto->pr_domain->dom_family) { 252 #ifdef INET 253 case PF_INET: 254 in_pcbpurgeif0(&tcbtable, (struct ifnet *)control); 255 in_purgeif((struct ifnet *)control); 256 in_pcbpurgeif(&tcbtable, (struct ifnet *)control); 257 break; 258 #endif 259 #ifdef INET6 260 case PF_INET6: 261 in6_pcbpurgeif0(&tcbtable, (struct ifnet *)control); 262 in6_purgeif((struct ifnet *)control); 263 in6_pcbpurgeif(&tcbtable, (struct ifnet *)control); 264 break; 265 #endif 266 default: 267 mutex_exit(softnet_lock); 268 splx(s); 269 return (EAFNOSUPPORT); 270 } 271 mutex_exit(softnet_lock); 272 splx(s); 273 return (0); 274 } 275 276 KASSERT(solocked(so)); 277 278 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) { 279 splx(s); 280 return error; 281 } 282 283 ostate = tcp_debug_capture(tp, req); 284 285 KASSERT(!control || req == PRU_SEND); 286 #ifdef INET6 287 /* XXX: KASSERT((inp != NULL) ^ (in6p != NULL)); */ 288 #endif 289 290 switch (req) { 291 292 /* 293 * Create a TCP connection between two sockets. 294 */ 295 case PRU_CONNECT2: 296 error = EOPNOTSUPP; 297 break; 298 299 /* 300 * After a receive, possibly send window update to peer. 301 */ 302 case PRU_RCVD: 303 /* 304 * soreceive() calls this function when a user receives 305 * ancillary data on a listening socket. We don't call 306 * tcp_output in such a case, since there is no header 307 * template for a listening socket and hence the kernel 308 * will panic. 309 */ 310 if ((so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) != 0) 311 (void) tcp_output(tp); 312 break; 313 314 /* 315 * Do a send by putting data in output queue and updating urgent 316 * marker if URG set. Possibly send more data. 317 */ 318 case PRU_SEND: 319 if (control && control->m_len) { 320 m_freem(control); 321 m_freem(m); 322 error = EINVAL; 323 break; 324 } 325 sbappendstream(&so->so_snd, m); 326 error = tcp_output(tp); 327 break; 328 329 default: 330 panic("tcp_usrreq"); 331 } 332 333 tcp_debug_trace(so, tp, ostate, req); 334 splx(s); 335 336 return error; 337 } 338 339 static void 340 change_keepalive(struct socket *so, struct tcpcb *tp) 341 { 342 tp->t_maxidle = tp->t_keepcnt * tp->t_keepintvl; 343 TCP_TIMER_DISARM(tp, TCPT_KEEP); 344 TCP_TIMER_DISARM(tp, TCPT_2MSL); 345 346 if (tp->t_state == TCPS_SYN_RECEIVED || 347 tp->t_state == TCPS_SYN_SENT) { 348 TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepinit); 349 } else if (so->so_options & SO_KEEPALIVE && 350 tp->t_state <= TCPS_CLOSE_WAIT) { 351 TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepintvl); 352 } else { 353 TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepidle); 354 } 355 356 if ((tp->t_state == TCPS_FIN_WAIT_2) && (tp->t_maxidle > 0)) 357 TCP_TIMER_ARM(tp, TCPT_2MSL, tp->t_maxidle); 358 } 359 360 int 361 tcp_ctloutput(int op, struct socket *so, struct sockopt *sopt) 362 { 363 int error = 0, s; 364 struct inpcb *inp; 365 #ifdef INET6 366 struct in6pcb *in6p; 367 #endif 368 struct tcpcb *tp; 369 u_int ui; 370 int family; /* family of the socket */ 371 int level, optname, optval; 372 373 level = sopt->sopt_level; 374 optname = sopt->sopt_name; 375 376 family = so->so_proto->pr_domain->dom_family; 377 378 s = splsoftnet(); 379 switch (family) { 380 #ifdef INET 381 case PF_INET: 382 inp = sotoinpcb(so); 383 #ifdef INET6 384 in6p = NULL; 385 #endif 386 break; 387 #endif 388 #ifdef INET6 389 case PF_INET6: 390 inp = NULL; 391 in6p = sotoin6pcb(so); 392 break; 393 #endif 394 default: 395 splx(s); 396 panic("%s: af %d", __func__, family); 397 } 398 #ifndef INET6 399 if (inp == NULL) 400 #else 401 if (inp == NULL && in6p == NULL) 402 #endif 403 { 404 splx(s); 405 return (ECONNRESET); 406 } 407 if (level != IPPROTO_TCP) { 408 switch (family) { 409 #ifdef INET 410 case PF_INET: 411 error = ip_ctloutput(op, so, sopt); 412 break; 413 #endif 414 #ifdef INET6 415 case PF_INET6: 416 error = ip6_ctloutput(op, so, sopt); 417 break; 418 #endif 419 } 420 splx(s); 421 return (error); 422 } 423 if (inp) 424 tp = intotcpcb(inp); 425 #ifdef INET6 426 else if (in6p) 427 tp = in6totcpcb(in6p); 428 #endif 429 else 430 tp = NULL; 431 432 switch (op) { 433 case PRCO_SETOPT: 434 switch (optname) { 435 #ifdef TCP_SIGNATURE 436 case TCP_MD5SIG: 437 error = sockopt_getint(sopt, &optval); 438 if (error) 439 break; 440 if (optval > 0) 441 tp->t_flags |= TF_SIGNATURE; 442 else 443 tp->t_flags &= ~TF_SIGNATURE; 444 break; 445 #endif /* TCP_SIGNATURE */ 446 447 case TCP_NODELAY: 448 error = sockopt_getint(sopt, &optval); 449 if (error) 450 break; 451 if (optval) 452 tp->t_flags |= TF_NODELAY; 453 else 454 tp->t_flags &= ~TF_NODELAY; 455 break; 456 457 case TCP_MAXSEG: 458 error = sockopt_getint(sopt, &optval); 459 if (error) 460 break; 461 if (optval > 0 && optval <= tp->t_peermss) 462 tp->t_peermss = optval; /* limit on send size */ 463 else 464 error = EINVAL; 465 break; 466 #ifdef notyet 467 case TCP_CONGCTL: 468 /* XXX string overflow XXX */ 469 error = tcp_congctl_select(tp, sopt->sopt_data); 470 break; 471 #endif 472 473 case TCP_KEEPIDLE: 474 error = sockopt_get(sopt, &ui, sizeof(ui)); 475 if (error) 476 break; 477 if (ui > 0) { 478 tp->t_keepidle = ui; 479 change_keepalive(so, tp); 480 } else 481 error = EINVAL; 482 break; 483 484 case TCP_KEEPINTVL: 485 error = sockopt_get(sopt, &ui, sizeof(ui)); 486 if (error) 487 break; 488 if (ui > 0) { 489 tp->t_keepintvl = ui; 490 change_keepalive(so, tp); 491 } else 492 error = EINVAL; 493 break; 494 495 case TCP_KEEPCNT: 496 error = sockopt_get(sopt, &ui, sizeof(ui)); 497 if (error) 498 break; 499 if (ui > 0) { 500 tp->t_keepcnt = ui; 501 change_keepalive(so, tp); 502 } else 503 error = EINVAL; 504 break; 505 506 case TCP_KEEPINIT: 507 error = sockopt_get(sopt, &ui, sizeof(ui)); 508 if (error) 509 break; 510 if (ui > 0) { 511 tp->t_keepinit = ui; 512 change_keepalive(so, tp); 513 } else 514 error = EINVAL; 515 break; 516 517 default: 518 error = ENOPROTOOPT; 519 break; 520 } 521 break; 522 523 case PRCO_GETOPT: 524 switch (optname) { 525 #ifdef TCP_SIGNATURE 526 case TCP_MD5SIG: 527 optval = (tp->t_flags & TF_SIGNATURE) ? 1 : 0; 528 error = sockopt_set(sopt, &optval, sizeof(optval)); 529 break; 530 #endif 531 case TCP_NODELAY: 532 optval = tp->t_flags & TF_NODELAY; 533 error = sockopt_set(sopt, &optval, sizeof(optval)); 534 break; 535 case TCP_MAXSEG: 536 optval = tp->t_peermss; 537 error = sockopt_set(sopt, &optval, sizeof(optval)); 538 break; 539 #ifdef notyet 540 case TCP_CONGCTL: 541 break; 542 #endif 543 default: 544 error = ENOPROTOOPT; 545 break; 546 } 547 break; 548 } 549 splx(s); 550 return (error); 551 } 552 553 #ifndef TCP_SENDSPACE 554 #define TCP_SENDSPACE 1024*32 555 #endif 556 int tcp_sendspace = TCP_SENDSPACE; 557 #ifndef TCP_RECVSPACE 558 #define TCP_RECVSPACE 1024*32 559 #endif 560 int tcp_recvspace = TCP_RECVSPACE; 561 562 /* 563 * tcp_attach: attach TCP protocol to socket, allocating internet protocol 564 * control block, TCP control block, buffer space and entering LISTEN state 565 * if to accept connections. 566 */ 567 static int 568 tcp_attach(struct socket *so, int proto) 569 { 570 struct tcpcb *tp; 571 struct inpcb *inp; 572 #ifdef INET6 573 struct in6pcb *in6p; 574 #endif 575 int s, error, family; 576 577 /* Assign the lock (must happen even if we will error out). */ 578 s = splsoftnet(); 579 sosetlock(so); 580 KASSERT(solocked(so)); 581 582 family = so->so_proto->pr_domain->dom_family; 583 switch (family) { 584 #ifdef INET 585 case PF_INET: 586 inp = sotoinpcb(so); 587 #ifdef INET6 588 in6p = NULL; 589 #endif 590 break; 591 #endif 592 #ifdef INET6 593 case PF_INET6: 594 inp = NULL; 595 in6p = sotoin6pcb(so); 596 break; 597 #endif 598 default: 599 error = EAFNOSUPPORT; 600 goto out; 601 } 602 603 KASSERT(inp == NULL); 604 #ifdef INET6 605 KASSERT(in6p == NULL); 606 #endif 607 608 #ifdef MBUFTRACE 609 so->so_mowner = &tcp_sock_mowner; 610 so->so_rcv.sb_mowner = &tcp_sock_rx_mowner; 611 so->so_snd.sb_mowner = &tcp_sock_tx_mowner; 612 #endif 613 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 614 error = soreserve(so, tcp_sendspace, tcp_recvspace); 615 if (error) 616 goto out; 617 } 618 619 so->so_rcv.sb_flags |= SB_AUTOSIZE; 620 so->so_snd.sb_flags |= SB_AUTOSIZE; 621 622 switch (family) { 623 #ifdef INET 624 case PF_INET: 625 error = in_pcballoc(so, &tcbtable); 626 if (error) 627 goto out; 628 inp = sotoinpcb(so); 629 #ifdef INET6 630 in6p = NULL; 631 #endif 632 break; 633 #endif 634 #ifdef INET6 635 case PF_INET6: 636 error = in6_pcballoc(so, &tcbtable); 637 if (error) 638 goto out; 639 inp = NULL; 640 in6p = sotoin6pcb(so); 641 break; 642 #endif 643 default: 644 error = EAFNOSUPPORT; 645 goto out; 646 } 647 if (inp) 648 tp = tcp_newtcpcb(family, (void *)inp); 649 #ifdef INET6 650 else if (in6p) 651 tp = tcp_newtcpcb(family, (void *)in6p); 652 #endif 653 else 654 tp = NULL; 655 656 if (tp == NULL) { 657 int nofd = so->so_state & SS_NOFDREF; /* XXX */ 658 659 so->so_state &= ~SS_NOFDREF; /* don't free the socket yet */ 660 #ifdef INET 661 if (inp) 662 in_pcbdetach(inp); 663 #endif 664 #ifdef INET6 665 if (in6p) 666 in6_pcbdetach(in6p); 667 #endif 668 so->so_state |= nofd; 669 error = ENOBUFS; 670 goto out; 671 } 672 tp->t_state = TCPS_CLOSED; 673 if ((so->so_options & SO_LINGER) && so->so_linger == 0) { 674 so->so_linger = TCP_LINGERTIME; 675 } 676 out: 677 KASSERT(solocked(so)); 678 splx(s); 679 return error; 680 } 681 682 static void 683 tcp_detach(struct socket *so) 684 { 685 struct inpcb *inp = NULL; 686 struct in6pcb *in6p = NULL; 687 struct tcpcb *tp = NULL; 688 int s; 689 690 KASSERT(solocked(so)); 691 692 if (tcp_getpcb(so, &inp, &in6p, &tp) != 0) 693 return; 694 695 s = splsoftnet(); 696 (void)tcp_disconnect1(tp); 697 splx(s); 698 } 699 700 static int 701 tcp_accept(struct socket *so, struct mbuf *nam) 702 { 703 struct inpcb *inp = NULL; 704 struct in6pcb *in6p = NULL; 705 struct tcpcb *tp = NULL; 706 int ostate = 0; 707 int error = 0; 708 int s; 709 710 KASSERT(solocked(so)); 711 712 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 713 return error; 714 715 ostate = tcp_debug_capture(tp, PRU_ACCEPT); 716 717 /* 718 * Accept a connection. Essentially all the work is 719 * done at higher levels; just return the address 720 * of the peer, storing through addr. 721 */ 722 s = splsoftnet(); 723 #ifdef INET 724 if (inp) { 725 in_setpeeraddr(inp, nam); 726 } 727 #endif 728 #ifdef INET6 729 if (in6p) { 730 in6_setpeeraddr(in6p, nam); 731 } 732 #endif 733 tcp_debug_trace(so, tp, ostate, PRU_ACCEPT); 734 splx(s); 735 736 return 0; 737 } 738 739 static int 740 tcp_bind(struct socket *so, struct mbuf *nam, struct lwp *l) 741 { 742 struct inpcb *inp = NULL; 743 struct in6pcb *in6p = NULL; 744 struct tcpcb *tp = NULL; 745 int s; 746 int error = 0; 747 int ostate = 0; 748 749 KASSERT(solocked(so)); 750 751 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 752 return error; 753 754 ostate = tcp_debug_capture(tp, PRU_BIND); 755 756 /* 757 * Give the socket an address. 758 */ 759 s = splsoftnet(); 760 switch (so->so_proto->pr_domain->dom_family) { 761 #ifdef INET 762 case PF_INET: 763 error = in_pcbbind(inp, nam, l); 764 break; 765 #endif 766 #ifdef INET6 767 case PF_INET6: 768 error = in6_pcbbind(in6p, nam, l); 769 if (!error) { 770 /* mapped addr case */ 771 if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_laddr)) 772 tp->t_family = AF_INET; 773 else 774 tp->t_family = AF_INET6; 775 } 776 break; 777 #endif 778 } 779 tcp_debug_trace(so, tp, ostate, PRU_BIND); 780 splx(s); 781 782 return error; 783 } 784 785 static int 786 tcp_listen(struct socket *so, struct lwp *l) 787 { 788 struct inpcb *inp = NULL; 789 struct in6pcb *in6p = NULL; 790 struct tcpcb *tp = NULL; 791 int error = 0; 792 int ostate = 0; 793 int s; 794 795 KASSERT(solocked(so)); 796 797 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 798 return error; 799 800 ostate = tcp_debug_capture(tp, PRU_LISTEN); 801 802 /* 803 * Prepare to accept connections. 804 */ 805 s = splsoftnet(); 806 #ifdef INET 807 if (inp && inp->inp_lport == 0) { 808 error = in_pcbbind(inp, NULL, l); 809 if (error) 810 goto release; 811 } 812 #endif 813 #ifdef INET6 814 if (in6p && in6p->in6p_lport == 0) { 815 error = in6_pcbbind(in6p, NULL, l); 816 if (error) 817 goto release; 818 } 819 #endif 820 tp->t_state = TCPS_LISTEN; 821 822 release: 823 tcp_debug_trace(so, tp, ostate, PRU_LISTEN); 824 splx(s); 825 826 return error; 827 } 828 829 static int 830 tcp_connect(struct socket *so, struct mbuf *nam, struct lwp *l) 831 { 832 struct inpcb *inp = NULL; 833 struct in6pcb *in6p = NULL; 834 struct tcpcb *tp = NULL; 835 int s; 836 int error = 0; 837 int ostate = 0; 838 839 KASSERT(solocked(so)); 840 841 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 842 return error; 843 844 ostate = tcp_debug_capture(tp, PRU_CONNECT); 845 846 /* 847 * Initiate connection to peer. 848 * Create a template for use in transmissions on this connection. 849 * Enter SYN_SENT state, and mark socket as connecting. 850 * Start keep-alive timer, and seed output sequence space. 851 * Send initial segment on connection. 852 */ 853 s = splsoftnet(); 854 #ifdef INET 855 if (inp) { 856 if (inp->inp_lport == 0) { 857 error = in_pcbbind(inp, NULL, l); 858 if (error) 859 goto release; 860 } 861 error = in_pcbconnect(inp, nam, l); 862 } 863 #endif 864 #ifdef INET6 865 if (in6p) { 866 if (in6p->in6p_lport == 0) { 867 error = in6_pcbbind(in6p, NULL, l); 868 if (error) 869 goto release; 870 } 871 error = in6_pcbconnect(in6p, nam, l); 872 if (!error) { 873 /* mapped addr case */ 874 if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_faddr)) 875 tp->t_family = AF_INET; 876 else 877 tp->t_family = AF_INET6; 878 } 879 } 880 #endif 881 if (error) 882 goto release; 883 tp->t_template = tcp_template(tp); 884 if (tp->t_template == 0) { 885 #ifdef INET 886 if (inp) 887 in_pcbdisconnect(inp); 888 #endif 889 #ifdef INET6 890 if (in6p) 891 in6_pcbdisconnect(in6p); 892 #endif 893 error = ENOBUFS; 894 goto release; 895 } 896 /* 897 * Compute window scaling to request. 898 * XXX: This should be moved to tcp_output(). 899 */ 900 while (tp->request_r_scale < TCP_MAX_WINSHIFT && 901 (TCP_MAXWIN << tp->request_r_scale) < sb_max) 902 tp->request_r_scale++; 903 soisconnecting(so); 904 TCP_STATINC(TCP_STAT_CONNATTEMPT); 905 tp->t_state = TCPS_SYN_SENT; 906 TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepinit); 907 tp->iss = tcp_new_iss(tp, 0); 908 tcp_sendseqinit(tp); 909 error = tcp_output(tp); 910 911 release: 912 tcp_debug_trace(so, tp, ostate, PRU_CONNECT); 913 splx(s); 914 915 return error; 916 } 917 918 static int 919 tcp_disconnect(struct socket *so) 920 { 921 struct inpcb *inp = NULL; 922 struct in6pcb *in6p = NULL; 923 struct tcpcb *tp = NULL; 924 int error = 0; 925 int ostate = 0; 926 int s; 927 928 KASSERT(solocked(so)); 929 930 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 931 return error; 932 933 ostate = tcp_debug_capture(tp, PRU_DISCONNECT); 934 935 /* 936 * Initiate disconnect from peer. 937 * If connection never passed embryonic stage, just drop; 938 * else if don't need to let data drain, then can just drop anyways, 939 * else have to begin TCP shutdown process: mark socket disconnecting, 940 * drain unread data, state switch to reflect user close, and 941 * send segment (e.g. FIN) to peer. Socket will be really disconnected 942 * when peer sends FIN and acks ours. 943 * 944 * SHOULD IMPLEMENT LATER PRU_CONNECT VIA REALLOC TCPCB. 945 */ 946 s = splsoftnet(); 947 tp = tcp_disconnect1(tp); 948 tcp_debug_trace(so, tp, ostate, PRU_DISCONNECT); 949 splx(s); 950 951 return error; 952 } 953 954 static int 955 tcp_shutdown(struct socket *so) 956 { 957 struct inpcb *inp = NULL; 958 struct in6pcb *in6p = NULL; 959 struct tcpcb *tp = NULL; 960 int error = 0; 961 int ostate = 0; 962 int s; 963 964 KASSERT(solocked(so)); 965 966 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 967 return error; 968 969 ostate = tcp_debug_capture(tp, PRU_SHUTDOWN); 970 /* 971 * Mark the connection as being incapable of further output. 972 */ 973 s = splsoftnet(); 974 socantsendmore(so); 975 tp = tcp_usrclosed(tp); 976 if (tp) 977 error = tcp_output(tp); 978 tcp_debug_trace(so, tp, ostate, PRU_SHUTDOWN); 979 splx(s); 980 981 return error; 982 } 983 984 static int 985 tcp_abort(struct socket *so) 986 { 987 struct inpcb *inp = NULL; 988 struct in6pcb *in6p = NULL; 989 struct tcpcb *tp = NULL; 990 int error = 0; 991 int ostate = 0; 992 int s; 993 994 KASSERT(solocked(so)); 995 996 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 997 return error; 998 999 ostate = tcp_debug_capture(tp, PRU_ABORT); 1000 1001 /* 1002 * Abort the TCP. 1003 */ 1004 s = splsoftnet(); 1005 tp = tcp_drop(tp, ECONNABORTED); 1006 tcp_debug_trace(so, tp, ostate, PRU_ABORT); 1007 splx(s); 1008 1009 return error; 1010 } 1011 1012 static int 1013 tcp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1014 { 1015 switch (so->so_proto->pr_domain->dom_family) { 1016 #ifdef INET 1017 case PF_INET: 1018 return in_control(so, cmd, nam, ifp); 1019 #endif 1020 #ifdef INET6 1021 case PF_INET6: 1022 return in6_control(so, cmd, nam, ifp); 1023 #endif 1024 default: 1025 return EAFNOSUPPORT; 1026 } 1027 } 1028 1029 static int 1030 tcp_stat(struct socket *so, struct stat *ub) 1031 { 1032 KASSERT(solocked(so)); 1033 1034 /* stat: don't bother with a blocksize. */ 1035 return 0; 1036 } 1037 1038 static int 1039 tcp_peeraddr(struct socket *so, struct mbuf *nam) 1040 { 1041 struct inpcb *inp = NULL; 1042 struct in6pcb *in6p = NULL; 1043 struct tcpcb *tp = NULL; 1044 int ostate = 0; 1045 int error = 0; 1046 int s; 1047 1048 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 1049 return error; 1050 1051 ostate = tcp_debug_capture(tp, PRU_PEERADDR); 1052 1053 s = splsoftnet(); 1054 #ifdef INET 1055 if (inp) 1056 in_setpeeraddr(inp, nam); 1057 #endif 1058 #ifdef INET6 1059 if (in6p) 1060 in6_setpeeraddr(in6p, nam); 1061 #endif 1062 tcp_debug_trace(so, tp, ostate, PRU_PEERADDR); 1063 splx(s); 1064 1065 return 0; 1066 } 1067 1068 static int 1069 tcp_sockaddr(struct socket *so, struct mbuf *nam) 1070 { 1071 struct inpcb *inp = NULL; 1072 struct in6pcb *in6p = NULL; 1073 struct tcpcb *tp = NULL; 1074 int ostate = 0; 1075 int error = 0; 1076 int s; 1077 1078 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 1079 return error; 1080 1081 ostate = tcp_debug_capture(tp, PRU_SOCKADDR); 1082 1083 s = splsoftnet(); 1084 #ifdef INET 1085 if (inp) 1086 in_setsockaddr(inp, nam); 1087 #endif 1088 #ifdef INET6 1089 if (in6p) 1090 in6_setsockaddr(in6p, nam); 1091 #endif 1092 tcp_debug_trace(so, tp, ostate, PRU_SOCKADDR); 1093 splx(s); 1094 1095 return 0; 1096 } 1097 1098 static int 1099 tcp_recvoob(struct socket *so, struct mbuf *m, int flags) 1100 { 1101 struct inpcb *inp = NULL; 1102 struct in6pcb *in6p = NULL; 1103 struct tcpcb *tp = NULL; 1104 int ostate = 0; 1105 int error = 0; 1106 int s; 1107 1108 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 1109 return error; 1110 1111 ostate = tcp_debug_capture(tp, PRU_RCVOOB); 1112 1113 s = splsoftnet(); 1114 if ((so->so_oobmark == 0 && 1115 (so->so_state & SS_RCVATMARK) == 0) || 1116 so->so_options & SO_OOBINLINE || 1117 tp->t_oobflags & TCPOOB_HADDATA) { 1118 splx(s); 1119 return EINVAL; 1120 } 1121 1122 if ((tp->t_oobflags & TCPOOB_HAVEDATA) == 0) { 1123 splx(s); 1124 return EWOULDBLOCK; 1125 } 1126 1127 m->m_len = 1; 1128 *mtod(m, char *) = tp->t_iobc; 1129 if ((flags & MSG_PEEK) == 0) 1130 tp->t_oobflags ^= (TCPOOB_HAVEDATA | TCPOOB_HADDATA); 1131 1132 tcp_debug_trace(so, tp, ostate, PRU_RCVOOB); 1133 splx(s); 1134 1135 return 0; 1136 } 1137 1138 static int 1139 tcp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 1140 { 1141 struct inpcb *inp = NULL; 1142 struct in6pcb *in6p = NULL; 1143 struct tcpcb *tp = NULL; 1144 int ostate = 0; 1145 int error = 0; 1146 int s; 1147 1148 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 1149 return error; 1150 1151 ostate = tcp_debug_capture(tp, PRU_SENDOOB); 1152 1153 s = splsoftnet(); 1154 if (sbspace(&so->so_snd) < -512) { 1155 m_freem(m); 1156 splx(s); 1157 return ENOBUFS; 1158 } 1159 /* 1160 * According to RFC961 (Assigned Protocols), 1161 * the urgent pointer points to the last octet 1162 * of urgent data. We continue, however, 1163 * to consider it to indicate the first octet 1164 * of data past the urgent section. 1165 * Otherwise, snd_up should be one lower. 1166 */ 1167 sbappendstream(&so->so_snd, m); 1168 tp->snd_up = tp->snd_una + so->so_snd.sb_cc; 1169 tp->t_force = 1; 1170 error = tcp_output(tp); 1171 tp->t_force = 0; 1172 tcp_debug_trace(so, tp, ostate, PRU_SENDOOB); 1173 splx(s); 1174 1175 return error; 1176 } 1177 1178 /* 1179 * Initiate (or continue) disconnect. 1180 * If embryonic state, just send reset (once). 1181 * If in ``let data drain'' option and linger null, just drop. 1182 * Otherwise (hard), mark socket disconnecting and drop 1183 * current input data; switch states based on user close, and 1184 * send segment to peer (with FIN). 1185 */ 1186 struct tcpcb * 1187 tcp_disconnect1(struct tcpcb *tp) 1188 { 1189 struct socket *so; 1190 1191 if (tp->t_inpcb) 1192 so = tp->t_inpcb->inp_socket; 1193 #ifdef INET6 1194 else if (tp->t_in6pcb) 1195 so = tp->t_in6pcb->in6p_socket; 1196 #endif 1197 else 1198 so = NULL; 1199 1200 if (TCPS_HAVEESTABLISHED(tp->t_state) == 0) 1201 tp = tcp_close(tp); 1202 else if ((so->so_options & SO_LINGER) && so->so_linger == 0) 1203 tp = tcp_drop(tp, 0); 1204 else { 1205 soisdisconnecting(so); 1206 sbflush(&so->so_rcv); 1207 tp = tcp_usrclosed(tp); 1208 if (tp) 1209 (void) tcp_output(tp); 1210 } 1211 return (tp); 1212 } 1213 1214 /* 1215 * User issued close, and wish to trail through shutdown states: 1216 * if never received SYN, just forget it. If got a SYN from peer, 1217 * but haven't sent FIN, then go to FIN_WAIT_1 state to send peer a FIN. 1218 * If already got a FIN from peer, then almost done; go to LAST_ACK 1219 * state. In all other cases, have already sent FIN to peer (e.g. 1220 * after PRU_SHUTDOWN), and just have to play tedious game waiting 1221 * for peer to send FIN or not respond to keep-alives, etc. 1222 * We can let the user exit from the close as soon as the FIN is acked. 1223 */ 1224 struct tcpcb * 1225 tcp_usrclosed(struct tcpcb *tp) 1226 { 1227 1228 switch (tp->t_state) { 1229 1230 case TCPS_CLOSED: 1231 case TCPS_LISTEN: 1232 case TCPS_SYN_SENT: 1233 tp->t_state = TCPS_CLOSED; 1234 tp = tcp_close(tp); 1235 break; 1236 1237 case TCPS_SYN_RECEIVED: 1238 case TCPS_ESTABLISHED: 1239 tp->t_state = TCPS_FIN_WAIT_1; 1240 break; 1241 1242 case TCPS_CLOSE_WAIT: 1243 tp->t_state = TCPS_LAST_ACK; 1244 break; 1245 } 1246 if (tp && tp->t_state >= TCPS_FIN_WAIT_2) { 1247 struct socket *so; 1248 if (tp->t_inpcb) 1249 so = tp->t_inpcb->inp_socket; 1250 #ifdef INET6 1251 else if (tp->t_in6pcb) 1252 so = tp->t_in6pcb->in6p_socket; 1253 #endif 1254 else 1255 so = NULL; 1256 if (so) 1257 soisdisconnected(so); 1258 /* 1259 * If we are in FIN_WAIT_2, we arrived here because the 1260 * application did a shutdown of the send side. Like the 1261 * case of a transition from FIN_WAIT_1 to FIN_WAIT_2 after 1262 * a full close, we start a timer to make sure sockets are 1263 * not left in FIN_WAIT_2 forever. 1264 */ 1265 if ((tp->t_state == TCPS_FIN_WAIT_2) && (tp->t_maxidle > 0)) 1266 TCP_TIMER_ARM(tp, TCPT_2MSL, tp->t_maxidle); 1267 else if (tp->t_state == TCPS_TIME_WAIT 1268 && ((tp->t_inpcb 1269 && (tcp4_vtw_enable & 1) 1270 && vtw_add(AF_INET, tp)) 1271 || 1272 (tp->t_in6pcb 1273 && (tcp6_vtw_enable & 1) 1274 && vtw_add(AF_INET6, tp)))) { 1275 tp = 0; 1276 } 1277 } 1278 return (tp); 1279 } 1280 1281 /* 1282 * sysctl helper routine for net.inet.ip.mssdflt. it can't be less 1283 * than 32. 1284 */ 1285 static int 1286 sysctl_net_inet_tcp_mssdflt(SYSCTLFN_ARGS) 1287 { 1288 int error, mssdflt; 1289 struct sysctlnode node; 1290 1291 mssdflt = tcp_mssdflt; 1292 node = *rnode; 1293 node.sysctl_data = &mssdflt; 1294 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1295 if (error || newp == NULL) 1296 return (error); 1297 1298 if (mssdflt < 32) 1299 return (EINVAL); 1300 tcp_mssdflt = mssdflt; 1301 1302 mutex_enter(softnet_lock); 1303 tcp_tcpcb_template(); 1304 mutex_exit(softnet_lock); 1305 1306 return (0); 1307 } 1308 1309 /* 1310 * sysctl helper for TCP CB template update 1311 */ 1312 static int 1313 sysctl_update_tcpcb_template(SYSCTLFN_ARGS) 1314 { 1315 int t, error; 1316 struct sysctlnode node; 1317 1318 /* follow procedures in sysctl(9) manpage */ 1319 t = *(int *)rnode->sysctl_data; 1320 node = *rnode; 1321 node.sysctl_data = &t; 1322 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1323 if (error || newp == NULL) 1324 return error; 1325 1326 if (t < 0) 1327 return EINVAL; 1328 1329 *(int *)rnode->sysctl_data = t; 1330 1331 mutex_enter(softnet_lock); 1332 tcp_tcpcb_template(); 1333 mutex_exit(softnet_lock); 1334 1335 return 0; 1336 } 1337 1338 /* 1339 * sysctl helper routine for setting port related values under 1340 * net.inet.ip and net.inet6.ip6. does basic range checking and does 1341 * additional checks for each type. this code has placed in 1342 * tcp_input.c since INET and INET6 both use the same tcp code. 1343 * 1344 * this helper is not static so that both inet and inet6 can use it. 1345 */ 1346 int 1347 sysctl_net_inet_ip_ports(SYSCTLFN_ARGS) 1348 { 1349 int error, tmp; 1350 int apmin, apmax; 1351 #ifndef IPNOPRIVPORTS 1352 int lpmin, lpmax; 1353 #endif /* IPNOPRIVPORTS */ 1354 struct sysctlnode node; 1355 1356 if (namelen != 0) 1357 return (EINVAL); 1358 1359 switch (name[-3]) { 1360 #ifdef INET 1361 case PF_INET: 1362 apmin = anonportmin; 1363 apmax = anonportmax; 1364 #ifndef IPNOPRIVPORTS 1365 lpmin = lowportmin; 1366 lpmax = lowportmax; 1367 #endif /* IPNOPRIVPORTS */ 1368 break; 1369 #endif /* INET */ 1370 #ifdef INET6 1371 case PF_INET6: 1372 apmin = ip6_anonportmin; 1373 apmax = ip6_anonportmax; 1374 #ifndef IPNOPRIVPORTS 1375 lpmin = ip6_lowportmin; 1376 lpmax = ip6_lowportmax; 1377 #endif /* IPNOPRIVPORTS */ 1378 break; 1379 #endif /* INET6 */ 1380 default: 1381 return (EINVAL); 1382 } 1383 1384 /* 1385 * insert temporary copy into node, perform lookup on 1386 * temporary, then restore pointer 1387 */ 1388 node = *rnode; 1389 tmp = *(int*)rnode->sysctl_data; 1390 node.sysctl_data = &tmp; 1391 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1392 if (error || newp == NULL) 1393 return (error); 1394 1395 /* 1396 * simple port range check 1397 */ 1398 if (tmp < 0 || tmp > 65535) 1399 return (EINVAL); 1400 1401 /* 1402 * per-node range checks 1403 */ 1404 switch (rnode->sysctl_num) { 1405 case IPCTL_ANONPORTMIN: 1406 case IPV6CTL_ANONPORTMIN: 1407 if (tmp >= apmax) 1408 return (EINVAL); 1409 #ifndef IPNOPRIVPORTS 1410 if (tmp < IPPORT_RESERVED) 1411 return (EINVAL); 1412 #endif /* IPNOPRIVPORTS */ 1413 break; 1414 1415 case IPCTL_ANONPORTMAX: 1416 case IPV6CTL_ANONPORTMAX: 1417 if (apmin >= tmp) 1418 return (EINVAL); 1419 #ifndef IPNOPRIVPORTS 1420 if (tmp < IPPORT_RESERVED) 1421 return (EINVAL); 1422 #endif /* IPNOPRIVPORTS */ 1423 break; 1424 1425 #ifndef IPNOPRIVPORTS 1426 case IPCTL_LOWPORTMIN: 1427 case IPV6CTL_LOWPORTMIN: 1428 if (tmp >= lpmax || 1429 tmp > IPPORT_RESERVEDMAX || 1430 tmp < IPPORT_RESERVEDMIN) 1431 return (EINVAL); 1432 break; 1433 1434 case IPCTL_LOWPORTMAX: 1435 case IPV6CTL_LOWPORTMAX: 1436 if (lpmin >= tmp || 1437 tmp > IPPORT_RESERVEDMAX || 1438 tmp < IPPORT_RESERVEDMIN) 1439 return (EINVAL); 1440 break; 1441 #endif /* IPNOPRIVPORTS */ 1442 1443 default: 1444 return (EINVAL); 1445 } 1446 1447 *(int*)rnode->sysctl_data = tmp; 1448 1449 return (0); 1450 } 1451 1452 static inline int 1453 copyout_uid(struct socket *sockp, void *oldp, size_t *oldlenp) 1454 { 1455 if (oldp) { 1456 size_t sz; 1457 uid_t uid; 1458 int error; 1459 1460 if (sockp->so_cred == NULL) 1461 return EPERM; 1462 1463 uid = kauth_cred_geteuid(sockp->so_cred); 1464 sz = MIN(sizeof(uid), *oldlenp); 1465 if ((error = copyout(&uid, oldp, sz)) != 0) 1466 return error; 1467 } 1468 *oldlenp = sizeof(uid_t); 1469 return 0; 1470 } 1471 1472 static inline int 1473 inet4_ident_core(struct in_addr raddr, u_int rport, 1474 struct in_addr laddr, u_int lport, 1475 void *oldp, size_t *oldlenp, 1476 struct lwp *l, int dodrop) 1477 { 1478 struct inpcb *inp; 1479 struct socket *sockp; 1480 1481 inp = in_pcblookup_connect(&tcbtable, raddr, rport, laddr, lport, 0); 1482 1483 if (inp == NULL || (sockp = inp->inp_socket) == NULL) 1484 return ESRCH; 1485 1486 if (dodrop) { 1487 struct tcpcb *tp; 1488 int error; 1489 1490 if (inp == NULL || (tp = intotcpcb(inp)) == NULL || 1491 (inp->inp_socket->so_options & SO_ACCEPTCONN) != 0) 1492 return ESRCH; 1493 1494 error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, 1495 KAUTH_REQ_NETWORK_SOCKET_DROP, inp->inp_socket, tp, NULL); 1496 if (error) 1497 return (error); 1498 1499 (void)tcp_drop(tp, ECONNABORTED); 1500 return 0; 1501 } 1502 else 1503 return copyout_uid(sockp, oldp, oldlenp); 1504 } 1505 1506 #ifdef INET6 1507 static inline int 1508 inet6_ident_core(struct in6_addr *raddr, u_int rport, 1509 struct in6_addr *laddr, u_int lport, 1510 void *oldp, size_t *oldlenp, 1511 struct lwp *l, int dodrop) 1512 { 1513 struct in6pcb *in6p; 1514 struct socket *sockp; 1515 1516 in6p = in6_pcblookup_connect(&tcbtable, raddr, rport, laddr, lport, 0, 0); 1517 1518 if (in6p == NULL || (sockp = in6p->in6p_socket) == NULL) 1519 return ESRCH; 1520 1521 if (dodrop) { 1522 struct tcpcb *tp; 1523 int error; 1524 1525 if (in6p == NULL || (tp = in6totcpcb(in6p)) == NULL || 1526 (in6p->in6p_socket->so_options & SO_ACCEPTCONN) != 0) 1527 return ESRCH; 1528 1529 error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, 1530 KAUTH_REQ_NETWORK_SOCKET_DROP, in6p->in6p_socket, tp, NULL); 1531 if (error) 1532 return (error); 1533 1534 (void)tcp_drop(tp, ECONNABORTED); 1535 return 0; 1536 } 1537 else 1538 return copyout_uid(sockp, oldp, oldlenp); 1539 } 1540 #endif 1541 1542 /* 1543 * sysctl helper routine for the net.inet.tcp.drop and 1544 * net.inet6.tcp6.drop nodes. 1545 */ 1546 #define sysctl_net_inet_tcp_drop sysctl_net_inet_tcp_ident 1547 1548 /* 1549 * sysctl helper routine for the net.inet.tcp.ident and 1550 * net.inet6.tcp6.ident nodes. contains backwards compat code for the 1551 * old way of looking up the ident information for ipv4 which involves 1552 * stuffing the port/addr pairs into the mib lookup. 1553 */ 1554 static int 1555 sysctl_net_inet_tcp_ident(SYSCTLFN_ARGS) 1556 { 1557 #ifdef INET 1558 struct sockaddr_in *si4[2]; 1559 #endif /* INET */ 1560 #ifdef INET6 1561 struct sockaddr_in6 *si6[2]; 1562 #endif /* INET6 */ 1563 struct sockaddr_storage sa[2]; 1564 int error, pf, dodrop; 1565 1566 dodrop = name[-1] == TCPCTL_DROP; 1567 if (dodrop) { 1568 if (oldp != NULL || *oldlenp != 0) 1569 return EINVAL; 1570 if (newp == NULL) 1571 return EPERM; 1572 if (newlen < sizeof(sa)) 1573 return ENOMEM; 1574 } 1575 if (namelen != 4 && namelen != 0) 1576 return EINVAL; 1577 if (name[-2] != IPPROTO_TCP) 1578 return EINVAL; 1579 pf = name[-3]; 1580 1581 /* old style lookup, ipv4 only */ 1582 if (namelen == 4) { 1583 #ifdef INET 1584 struct in_addr laddr, raddr; 1585 u_int lport, rport; 1586 1587 if (pf != PF_INET) 1588 return EPROTONOSUPPORT; 1589 raddr.s_addr = (uint32_t)name[0]; 1590 rport = (u_int)name[1]; 1591 laddr.s_addr = (uint32_t)name[2]; 1592 lport = (u_int)name[3]; 1593 1594 mutex_enter(softnet_lock); 1595 error = inet4_ident_core(raddr, rport, laddr, lport, 1596 oldp, oldlenp, l, dodrop); 1597 mutex_exit(softnet_lock); 1598 return error; 1599 #else /* INET */ 1600 return EINVAL; 1601 #endif /* INET */ 1602 } 1603 1604 if (newp == NULL || newlen != sizeof(sa)) 1605 return EINVAL; 1606 error = copyin(newp, &sa, newlen); 1607 if (error) 1608 return error; 1609 1610 /* 1611 * requested families must match 1612 */ 1613 if (pf != sa[0].ss_family || sa[0].ss_family != sa[1].ss_family) 1614 return EINVAL; 1615 1616 switch (pf) { 1617 #ifdef INET6 1618 case PF_INET6: 1619 si6[0] = (struct sockaddr_in6*)&sa[0]; 1620 si6[1] = (struct sockaddr_in6*)&sa[1]; 1621 if (si6[0]->sin6_len != sizeof(*si6[0]) || 1622 si6[1]->sin6_len != sizeof(*si6[1])) 1623 return EINVAL; 1624 1625 if (!IN6_IS_ADDR_V4MAPPED(&si6[0]->sin6_addr) && 1626 !IN6_IS_ADDR_V4MAPPED(&si6[1]->sin6_addr)) { 1627 error = sa6_embedscope(si6[0], ip6_use_defzone); 1628 if (error) 1629 return error; 1630 error = sa6_embedscope(si6[1], ip6_use_defzone); 1631 if (error) 1632 return error; 1633 1634 mutex_enter(softnet_lock); 1635 error = inet6_ident_core(&si6[0]->sin6_addr, 1636 si6[0]->sin6_port, &si6[1]->sin6_addr, 1637 si6[1]->sin6_port, oldp, oldlenp, l, dodrop); 1638 mutex_exit(softnet_lock); 1639 return error; 1640 } 1641 1642 if (IN6_IS_ADDR_V4MAPPED(&si6[0]->sin6_addr) != 1643 IN6_IS_ADDR_V4MAPPED(&si6[1]->sin6_addr)) 1644 return EINVAL; 1645 1646 in6_sin6_2_sin_in_sock((struct sockaddr *)&sa[0]); 1647 in6_sin6_2_sin_in_sock((struct sockaddr *)&sa[1]); 1648 /*FALLTHROUGH*/ 1649 #endif /* INET6 */ 1650 #ifdef INET 1651 case PF_INET: 1652 si4[0] = (struct sockaddr_in*)&sa[0]; 1653 si4[1] = (struct sockaddr_in*)&sa[1]; 1654 if (si4[0]->sin_len != sizeof(*si4[0]) || 1655 si4[0]->sin_len != sizeof(*si4[1])) 1656 return EINVAL; 1657 1658 mutex_enter(softnet_lock); 1659 error = inet4_ident_core(si4[0]->sin_addr, si4[0]->sin_port, 1660 si4[1]->sin_addr, si4[1]->sin_port, 1661 oldp, oldlenp, l, dodrop); 1662 mutex_exit(softnet_lock); 1663 return error; 1664 #endif /* INET */ 1665 default: 1666 return EPROTONOSUPPORT; 1667 } 1668 } 1669 1670 /* 1671 * sysctl helper for the inet and inet6 pcblists. handles tcp/udp and 1672 * inet/inet6, as well as raw pcbs for each. specifically not 1673 * declared static so that raw sockets and udp/udp6 can use it as 1674 * well. 1675 */ 1676 int 1677 sysctl_inpcblist(SYSCTLFN_ARGS) 1678 { 1679 #ifdef INET 1680 struct sockaddr_in *in; 1681 const struct inpcb *inp; 1682 #endif 1683 #ifdef INET6 1684 struct sockaddr_in6 *in6; 1685 const struct in6pcb *in6p; 1686 #endif 1687 struct inpcbtable *pcbtbl = __UNCONST(rnode->sysctl_data); 1688 const struct inpcb_hdr *inph; 1689 struct tcpcb *tp; 1690 struct kinfo_pcb pcb; 1691 char *dp; 1692 size_t len, needed, elem_size, out_size; 1693 int error, elem_count, pf, proto, pf2; 1694 1695 if (namelen != 4) 1696 return (EINVAL); 1697 1698 if (oldp != NULL) { 1699 len = *oldlenp; 1700 elem_size = name[2]; 1701 elem_count = name[3]; 1702 if (elem_size != sizeof(pcb)) 1703 return EINVAL; 1704 } else { 1705 len = 0; 1706 elem_count = INT_MAX; 1707 elem_size = sizeof(pcb); 1708 } 1709 error = 0; 1710 dp = oldp; 1711 out_size = elem_size; 1712 needed = 0; 1713 1714 if (namelen == 1 && name[0] == CTL_QUERY) 1715 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1716 1717 if (name - oname != 4) 1718 return (EINVAL); 1719 1720 pf = oname[1]; 1721 proto = oname[2]; 1722 pf2 = (oldp != NULL) ? pf : 0; 1723 1724 mutex_enter(softnet_lock); 1725 1726 TAILQ_FOREACH(inph, &pcbtbl->inpt_queue, inph_queue) { 1727 #ifdef INET 1728 inp = (const struct inpcb *)inph; 1729 #endif 1730 #ifdef INET6 1731 in6p = (const struct in6pcb *)inph; 1732 #endif 1733 1734 if (inph->inph_af != pf) 1735 continue; 1736 1737 if (kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, 1738 KAUTH_REQ_NETWORK_SOCKET_CANSEE, inph->inph_socket, NULL, 1739 NULL) != 0) 1740 continue; 1741 1742 memset(&pcb, 0, sizeof(pcb)); 1743 1744 pcb.ki_family = pf; 1745 pcb.ki_type = proto; 1746 1747 switch (pf2) { 1748 case 0: 1749 /* just probing for size */ 1750 break; 1751 #ifdef INET 1752 case PF_INET: 1753 pcb.ki_family = inp->inp_socket->so_proto-> 1754 pr_domain->dom_family; 1755 pcb.ki_type = inp->inp_socket->so_proto-> 1756 pr_type; 1757 pcb.ki_protocol = inp->inp_socket->so_proto-> 1758 pr_protocol; 1759 pcb.ki_pflags = inp->inp_flags; 1760 1761 pcb.ki_sostate = inp->inp_socket->so_state; 1762 pcb.ki_prstate = inp->inp_state; 1763 if (proto == IPPROTO_TCP) { 1764 tp = intotcpcb(inp); 1765 pcb.ki_tstate = tp->t_state; 1766 pcb.ki_tflags = tp->t_flags; 1767 } 1768 1769 pcb.ki_pcbaddr = PTRTOUINT64(inp); 1770 pcb.ki_ppcbaddr = PTRTOUINT64(inp->inp_ppcb); 1771 pcb.ki_sockaddr = PTRTOUINT64(inp->inp_socket); 1772 1773 pcb.ki_rcvq = inp->inp_socket->so_rcv.sb_cc; 1774 pcb.ki_sndq = inp->inp_socket->so_snd.sb_cc; 1775 1776 in = satosin(&pcb.ki_src); 1777 in->sin_len = sizeof(*in); 1778 in->sin_family = pf; 1779 in->sin_port = inp->inp_lport; 1780 in->sin_addr = inp->inp_laddr; 1781 if (pcb.ki_prstate >= INP_CONNECTED) { 1782 in = satosin(&pcb.ki_dst); 1783 in->sin_len = sizeof(*in); 1784 in->sin_family = pf; 1785 in->sin_port = inp->inp_fport; 1786 in->sin_addr = inp->inp_faddr; 1787 } 1788 break; 1789 #endif 1790 #ifdef INET6 1791 case PF_INET6: 1792 pcb.ki_family = in6p->in6p_socket->so_proto-> 1793 pr_domain->dom_family; 1794 pcb.ki_type = in6p->in6p_socket->so_proto->pr_type; 1795 pcb.ki_protocol = in6p->in6p_socket->so_proto-> 1796 pr_protocol; 1797 pcb.ki_pflags = in6p->in6p_flags; 1798 1799 pcb.ki_sostate = in6p->in6p_socket->so_state; 1800 pcb.ki_prstate = in6p->in6p_state; 1801 if (proto == IPPROTO_TCP) { 1802 tp = in6totcpcb(in6p); 1803 pcb.ki_tstate = tp->t_state; 1804 pcb.ki_tflags = tp->t_flags; 1805 } 1806 1807 pcb.ki_pcbaddr = PTRTOUINT64(in6p); 1808 pcb.ki_ppcbaddr = PTRTOUINT64(in6p->in6p_ppcb); 1809 pcb.ki_sockaddr = PTRTOUINT64(in6p->in6p_socket); 1810 1811 pcb.ki_rcvq = in6p->in6p_socket->so_rcv.sb_cc; 1812 pcb.ki_sndq = in6p->in6p_socket->so_snd.sb_cc; 1813 1814 in6 = satosin6(&pcb.ki_src); 1815 in6->sin6_len = sizeof(*in6); 1816 in6->sin6_family = pf; 1817 in6->sin6_port = in6p->in6p_lport; 1818 in6->sin6_flowinfo = in6p->in6p_flowinfo; 1819 in6->sin6_addr = in6p->in6p_laddr; 1820 in6->sin6_scope_id = 0; /* XXX? */ 1821 1822 if (pcb.ki_prstate >= IN6P_CONNECTED) { 1823 in6 = satosin6(&pcb.ki_dst); 1824 in6->sin6_len = sizeof(*in6); 1825 in6->sin6_family = pf; 1826 in6->sin6_port = in6p->in6p_fport; 1827 in6->sin6_flowinfo = in6p->in6p_flowinfo; 1828 in6->sin6_addr = in6p->in6p_faddr; 1829 in6->sin6_scope_id = 0; /* XXX? */ 1830 } 1831 break; 1832 #endif 1833 } 1834 1835 if (len >= elem_size && elem_count > 0) { 1836 error = copyout(&pcb, dp, out_size); 1837 if (error) { 1838 mutex_exit(softnet_lock); 1839 return (error); 1840 } 1841 dp += elem_size; 1842 len -= elem_size; 1843 } 1844 needed += elem_size; 1845 if (elem_count > 0 && elem_count != INT_MAX) 1846 elem_count--; 1847 } 1848 1849 *oldlenp = needed; 1850 if (oldp == NULL) 1851 *oldlenp += PCB_SLOP * sizeof(struct kinfo_pcb); 1852 1853 mutex_exit(softnet_lock); 1854 1855 return (error); 1856 } 1857 1858 static int 1859 sysctl_tcp_congctl(SYSCTLFN_ARGS) 1860 { 1861 struct sysctlnode node; 1862 int error; 1863 char newname[TCPCC_MAXLEN]; 1864 1865 strlcpy(newname, tcp_congctl_global_name, sizeof(newname) - 1); 1866 1867 node = *rnode; 1868 node.sysctl_data = newname; 1869 node.sysctl_size = sizeof(newname); 1870 1871 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1872 1873 if (error || 1874 newp == NULL || 1875 strncmp(newname, tcp_congctl_global_name, sizeof(newname)) == 0) 1876 return error; 1877 1878 mutex_enter(softnet_lock); 1879 error = tcp_congctl_select(NULL, newname); 1880 mutex_exit(softnet_lock); 1881 1882 return error; 1883 } 1884 1885 static int 1886 sysctl_tcp_init_win(SYSCTLFN_ARGS) 1887 { 1888 int error; 1889 u_int iw; 1890 struct sysctlnode node; 1891 1892 iw = *(u_int *)rnode->sysctl_data; 1893 node = *rnode; 1894 node.sysctl_data = &iw; 1895 node.sysctl_size = sizeof(iw); 1896 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1897 if (error || newp == NULL) 1898 return error; 1899 1900 if (iw >= __arraycount(tcp_init_win_max)) 1901 return EINVAL; 1902 *(u_int *)rnode->sysctl_data = iw; 1903 return 0; 1904 } 1905 1906 static int 1907 sysctl_tcp_keep(SYSCTLFN_ARGS) 1908 { 1909 int error; 1910 u_int tmp; 1911 struct sysctlnode node; 1912 1913 node = *rnode; 1914 tmp = *(u_int *)rnode->sysctl_data; 1915 node.sysctl_data = &tmp; 1916 1917 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1918 if (error || newp == NULL) 1919 return error; 1920 1921 mutex_enter(softnet_lock); 1922 1923 *(u_int *)rnode->sysctl_data = tmp; 1924 tcp_tcpcb_template(); /* update the template */ 1925 1926 mutex_exit(softnet_lock); 1927 return 0; 1928 } 1929 1930 static int 1931 sysctl_net_inet_tcp_stats(SYSCTLFN_ARGS) 1932 { 1933 1934 return (NETSTAT_SYSCTL(tcpstat_percpu, TCP_NSTATS)); 1935 } 1936 1937 /* 1938 * this (second stage) setup routine is a replacement for tcp_sysctl() 1939 * (which is currently used for ipv4 and ipv6) 1940 */ 1941 static void 1942 sysctl_net_inet_tcp_setup2(struct sysctllog **clog, int pf, const char *pfname, 1943 const char *tcpname) 1944 { 1945 const struct sysctlnode *sack_node; 1946 const struct sysctlnode *abc_node; 1947 const struct sysctlnode *ecn_node; 1948 const struct sysctlnode *congctl_node; 1949 const struct sysctlnode *mslt_node; 1950 const struct sysctlnode *vtw_node; 1951 #ifdef TCP_DEBUG 1952 extern struct tcp_debug tcp_debug[TCP_NDEBUG]; 1953 extern int tcp_debx; 1954 #endif 1955 1956 sysctl_createv(clog, 0, NULL, NULL, 1957 CTLFLAG_PERMANENT, 1958 CTLTYPE_NODE, pfname, NULL, 1959 NULL, 0, NULL, 0, 1960 CTL_NET, pf, CTL_EOL); 1961 sysctl_createv(clog, 0, NULL, NULL, 1962 CTLFLAG_PERMANENT, 1963 CTLTYPE_NODE, tcpname, 1964 SYSCTL_DESCR("TCP related settings"), 1965 NULL, 0, NULL, 0, 1966 CTL_NET, pf, IPPROTO_TCP, CTL_EOL); 1967 1968 sysctl_createv(clog, 0, NULL, NULL, 1969 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1970 CTLTYPE_INT, "rfc1323", 1971 SYSCTL_DESCR("Enable RFC1323 TCP extensions"), 1972 sysctl_update_tcpcb_template, 0, &tcp_do_rfc1323, 0, 1973 CTL_NET, pf, IPPROTO_TCP, TCPCTL_RFC1323, CTL_EOL); 1974 sysctl_createv(clog, 0, NULL, NULL, 1975 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1976 CTLTYPE_INT, "sendspace", 1977 SYSCTL_DESCR("Default TCP send buffer size"), 1978 NULL, 0, &tcp_sendspace, 0, 1979 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SENDSPACE, CTL_EOL); 1980 sysctl_createv(clog, 0, NULL, NULL, 1981 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1982 CTLTYPE_INT, "recvspace", 1983 SYSCTL_DESCR("Default TCP receive buffer size"), 1984 NULL, 0, &tcp_recvspace, 0, 1985 CTL_NET, pf, IPPROTO_TCP, TCPCTL_RECVSPACE, CTL_EOL); 1986 sysctl_createv(clog, 0, NULL, NULL, 1987 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1988 CTLTYPE_INT, "mssdflt", 1989 SYSCTL_DESCR("Default maximum segment size"), 1990 sysctl_net_inet_tcp_mssdflt, 0, &tcp_mssdflt, 0, 1991 CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSSDFLT, CTL_EOL); 1992 sysctl_createv(clog, 0, NULL, NULL, 1993 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1994 CTLTYPE_INT, "minmss", 1995 SYSCTL_DESCR("Lower limit for TCP maximum segment size"), 1996 NULL, 0, &tcp_minmss, 0, 1997 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 1998 sysctl_createv(clog, 0, NULL, NULL, 1999 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2000 CTLTYPE_INT, "msl", 2001 SYSCTL_DESCR("Maximum Segment Life"), 2002 NULL, 0, &tcp_msl, 0, 2003 CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSL, CTL_EOL); 2004 sysctl_createv(clog, 0, NULL, NULL, 2005 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2006 CTLTYPE_INT, "syn_cache_limit", 2007 SYSCTL_DESCR("Maximum number of entries in the TCP " 2008 "compressed state engine"), 2009 NULL, 0, &tcp_syn_cache_limit, 0, 2010 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_CACHE_LIMIT, 2011 CTL_EOL); 2012 sysctl_createv(clog, 0, NULL, NULL, 2013 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2014 CTLTYPE_INT, "syn_bucket_limit", 2015 SYSCTL_DESCR("Maximum number of entries per hash " 2016 "bucket in the TCP compressed state " 2017 "engine"), 2018 NULL, 0, &tcp_syn_bucket_limit, 0, 2019 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_BUCKET_LIMIT, 2020 CTL_EOL); 2021 #if 0 /* obsoleted */ 2022 sysctl_createv(clog, 0, NULL, NULL, 2023 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2024 CTLTYPE_INT, "syn_cache_interval", 2025 SYSCTL_DESCR("TCP compressed state engine's timer interval"), 2026 NULL, 0, &tcp_syn_cache_interval, 0, 2027 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_CACHE_INTER, 2028 CTL_EOL); 2029 #endif 2030 sysctl_createv(clog, 0, NULL, NULL, 2031 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2032 CTLTYPE_INT, "init_win", 2033 SYSCTL_DESCR("Initial TCP congestion window"), 2034 sysctl_tcp_init_win, 0, &tcp_init_win, 0, 2035 CTL_NET, pf, IPPROTO_TCP, TCPCTL_INIT_WIN, CTL_EOL); 2036 sysctl_createv(clog, 0, NULL, NULL, 2037 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2038 CTLTYPE_INT, "mss_ifmtu", 2039 SYSCTL_DESCR("Use interface MTU for calculating MSS"), 2040 NULL, 0, &tcp_mss_ifmtu, 0, 2041 CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSS_IFMTU, CTL_EOL); 2042 sysctl_createv(clog, 0, NULL, &sack_node, 2043 CTLFLAG_PERMANENT, 2044 CTLTYPE_NODE, "sack", 2045 SYSCTL_DESCR("RFC2018 Selective ACKnowledgement tunables"), 2046 NULL, 0, NULL, 0, 2047 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_EOL); 2048 2049 /* Congctl subtree */ 2050 sysctl_createv(clog, 0, NULL, &congctl_node, 2051 CTLFLAG_PERMANENT, 2052 CTLTYPE_NODE, "congctl", 2053 SYSCTL_DESCR("TCP Congestion Control"), 2054 NULL, 0, NULL, 0, 2055 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2056 sysctl_createv(clog, 0, &congctl_node, NULL, 2057 CTLFLAG_PERMANENT, 2058 CTLTYPE_STRING, "available", 2059 SYSCTL_DESCR("Available Congestion Control Mechanisms"), 2060 NULL, 0, tcp_congctl_avail, 0, CTL_CREATE, CTL_EOL); 2061 sysctl_createv(clog, 0, &congctl_node, NULL, 2062 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2063 CTLTYPE_STRING, "selected", 2064 SYSCTL_DESCR("Selected Congestion Control Mechanism"), 2065 sysctl_tcp_congctl, 0, NULL, TCPCC_MAXLEN, 2066 CTL_CREATE, CTL_EOL); 2067 2068 sysctl_createv(clog, 0, NULL, NULL, 2069 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2070 CTLTYPE_INT, "win_scale", 2071 SYSCTL_DESCR("Use RFC1323 window scale options"), 2072 sysctl_update_tcpcb_template, 0, &tcp_do_win_scale, 0, 2073 CTL_NET, pf, IPPROTO_TCP, TCPCTL_WSCALE, CTL_EOL); 2074 sysctl_createv(clog, 0, NULL, NULL, 2075 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2076 CTLTYPE_INT, "timestamps", 2077 SYSCTL_DESCR("Use RFC1323 time stamp options"), 2078 sysctl_update_tcpcb_template, 0, &tcp_do_timestamps, 0, 2079 CTL_NET, pf, IPPROTO_TCP, TCPCTL_TSTAMP, CTL_EOL); 2080 sysctl_createv(clog, 0, NULL, NULL, 2081 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2082 CTLTYPE_INT, "compat_42", 2083 SYSCTL_DESCR("Enable workarounds for 4.2BSD TCP bugs"), 2084 NULL, 0, &tcp_compat_42, 0, 2085 CTL_NET, pf, IPPROTO_TCP, TCPCTL_COMPAT_42, CTL_EOL); 2086 sysctl_createv(clog, 0, NULL, NULL, 2087 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2088 CTLTYPE_INT, "cwm", 2089 SYSCTL_DESCR("Hughes/Touch/Heidemann Congestion Window " 2090 "Monitoring"), 2091 NULL, 0, &tcp_cwm, 0, 2092 CTL_NET, pf, IPPROTO_TCP, TCPCTL_CWM, CTL_EOL); 2093 sysctl_createv(clog, 0, NULL, NULL, 2094 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2095 CTLTYPE_INT, "cwm_burstsize", 2096 SYSCTL_DESCR("Congestion Window Monitoring allowed " 2097 "burst count in packets"), 2098 NULL, 0, &tcp_cwm_burstsize, 0, 2099 CTL_NET, pf, IPPROTO_TCP, TCPCTL_CWM_BURSTSIZE, 2100 CTL_EOL); 2101 sysctl_createv(clog, 0, NULL, NULL, 2102 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2103 CTLTYPE_INT, "ack_on_push", 2104 SYSCTL_DESCR("Immediately return ACK when PSH is " 2105 "received"), 2106 NULL, 0, &tcp_ack_on_push, 0, 2107 CTL_NET, pf, IPPROTO_TCP, TCPCTL_ACK_ON_PUSH, CTL_EOL); 2108 sysctl_createv(clog, 0, NULL, NULL, 2109 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2110 CTLTYPE_INT, "keepidle", 2111 SYSCTL_DESCR("Allowed connection idle ticks before a " 2112 "keepalive probe is sent"), 2113 sysctl_tcp_keep, 0, &tcp_keepidle, 0, 2114 CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPIDLE, CTL_EOL); 2115 sysctl_createv(clog, 0, NULL, NULL, 2116 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2117 CTLTYPE_INT, "keepintvl", 2118 SYSCTL_DESCR("Ticks before next keepalive probe is sent"), 2119 sysctl_tcp_keep, 0, &tcp_keepintvl, 0, 2120 CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPINTVL, CTL_EOL); 2121 sysctl_createv(clog, 0, NULL, NULL, 2122 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2123 CTLTYPE_INT, "keepcnt", 2124 SYSCTL_DESCR("Number of keepalive probes to send"), 2125 sysctl_tcp_keep, 0, &tcp_keepcnt, 0, 2126 CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPCNT, CTL_EOL); 2127 sysctl_createv(clog, 0, NULL, NULL, 2128 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 2129 CTLTYPE_INT, "slowhz", 2130 SYSCTL_DESCR("Keepalive ticks per second"), 2131 NULL, PR_SLOWHZ, NULL, 0, 2132 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SLOWHZ, CTL_EOL); 2133 sysctl_createv(clog, 0, NULL, NULL, 2134 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2135 CTLTYPE_INT, "log_refused", 2136 SYSCTL_DESCR("Log refused TCP connections"), 2137 NULL, 0, &tcp_log_refused, 0, 2138 CTL_NET, pf, IPPROTO_TCP, TCPCTL_LOG_REFUSED, CTL_EOL); 2139 #if 0 /* obsoleted */ 2140 sysctl_createv(clog, 0, NULL, NULL, 2141 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2142 CTLTYPE_INT, "rstratelimit", NULL, 2143 NULL, 0, &tcp_rst_ratelim, 0, 2144 CTL_NET, pf, IPPROTO_TCP, TCPCTL_RSTRATELIMIT, CTL_EOL); 2145 #endif 2146 sysctl_createv(clog, 0, NULL, NULL, 2147 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2148 CTLTYPE_INT, "rstppslimit", 2149 SYSCTL_DESCR("Maximum number of RST packets to send " 2150 "per second"), 2151 NULL, 0, &tcp_rst_ppslim, 0, 2152 CTL_NET, pf, IPPROTO_TCP, TCPCTL_RSTPPSLIMIT, CTL_EOL); 2153 sysctl_createv(clog, 0, NULL, NULL, 2154 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2155 CTLTYPE_INT, "delack_ticks", 2156 SYSCTL_DESCR("Number of ticks to delay sending an ACK"), 2157 NULL, 0, &tcp_delack_ticks, 0, 2158 CTL_NET, pf, IPPROTO_TCP, TCPCTL_DELACK_TICKS, CTL_EOL); 2159 sysctl_createv(clog, 0, NULL, NULL, 2160 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2161 CTLTYPE_INT, "init_win_local", 2162 SYSCTL_DESCR("Initial TCP window size (in segments)"), 2163 sysctl_tcp_init_win, 0, &tcp_init_win_local, 0, 2164 CTL_NET, pf, IPPROTO_TCP, TCPCTL_INIT_WIN_LOCAL, 2165 CTL_EOL); 2166 sysctl_createv(clog, 0, NULL, NULL, 2167 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2168 CTLTYPE_STRUCT, "ident", 2169 SYSCTL_DESCR("RFC1413 Identification Protocol lookups"), 2170 sysctl_net_inet_tcp_ident, 0, NULL, sizeof(uid_t), 2171 CTL_NET, pf, IPPROTO_TCP, TCPCTL_IDENT, CTL_EOL); 2172 sysctl_createv(clog, 0, NULL, NULL, 2173 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2174 CTLTYPE_INT, "do_loopback_cksum", 2175 SYSCTL_DESCR("Perform TCP checksum on loopback"), 2176 NULL, 0, &tcp_do_loopback_cksum, 0, 2177 CTL_NET, pf, IPPROTO_TCP, TCPCTL_LOOPBACKCKSUM, 2178 CTL_EOL); 2179 sysctl_createv(clog, 0, NULL, NULL, 2180 CTLFLAG_PERMANENT, 2181 CTLTYPE_STRUCT, "pcblist", 2182 SYSCTL_DESCR("TCP protocol control block list"), 2183 sysctl_inpcblist, 0, &tcbtable, 0, 2184 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, 2185 CTL_EOL); 2186 sysctl_createv(clog, 0, NULL, NULL, 2187 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2188 CTLTYPE_INT, "keepinit", 2189 SYSCTL_DESCR("Ticks before initial tcp connection times out"), 2190 sysctl_tcp_keep, 0, &tcp_keepinit, 0, 2191 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2192 2193 /* TCP socket buffers auto-sizing nodes */ 2194 sysctl_createv(clog, 0, NULL, NULL, 2195 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2196 CTLTYPE_INT, "recvbuf_auto", 2197 SYSCTL_DESCR("Enable automatic receive " 2198 "buffer sizing (experimental)"), 2199 NULL, 0, &tcp_do_autorcvbuf, 0, 2200 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2201 sysctl_createv(clog, 0, NULL, NULL, 2202 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2203 CTLTYPE_INT, "recvbuf_inc", 2204 SYSCTL_DESCR("Incrementor step size of " 2205 "automatic receive buffer"), 2206 NULL, 0, &tcp_autorcvbuf_inc, 0, 2207 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2208 sysctl_createv(clog, 0, NULL, NULL, 2209 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2210 CTLTYPE_INT, "recvbuf_max", 2211 SYSCTL_DESCR("Max size of automatic receive buffer"), 2212 NULL, 0, &tcp_autorcvbuf_max, 0, 2213 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2214 2215 sysctl_createv(clog, 0, NULL, NULL, 2216 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2217 CTLTYPE_INT, "sendbuf_auto", 2218 SYSCTL_DESCR("Enable automatic send " 2219 "buffer sizing (experimental)"), 2220 NULL, 0, &tcp_do_autosndbuf, 0, 2221 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2222 sysctl_createv(clog, 0, NULL, NULL, 2223 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2224 CTLTYPE_INT, "sendbuf_inc", 2225 SYSCTL_DESCR("Incrementor step size of " 2226 "automatic send buffer"), 2227 NULL, 0, &tcp_autosndbuf_inc, 0, 2228 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2229 sysctl_createv(clog, 0, NULL, NULL, 2230 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2231 CTLTYPE_INT, "sendbuf_max", 2232 SYSCTL_DESCR("Max size of automatic send buffer"), 2233 NULL, 0, &tcp_autosndbuf_max, 0, 2234 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2235 2236 /* ECN subtree */ 2237 sysctl_createv(clog, 0, NULL, &ecn_node, 2238 CTLFLAG_PERMANENT, 2239 CTLTYPE_NODE, "ecn", 2240 SYSCTL_DESCR("RFC3168 Explicit Congestion Notification"), 2241 NULL, 0, NULL, 0, 2242 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2243 sysctl_createv(clog, 0, &ecn_node, NULL, 2244 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2245 CTLTYPE_INT, "enable", 2246 SYSCTL_DESCR("Enable TCP Explicit Congestion " 2247 "Notification"), 2248 NULL, 0, &tcp_do_ecn, 0, CTL_CREATE, CTL_EOL); 2249 sysctl_createv(clog, 0, &ecn_node, NULL, 2250 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2251 CTLTYPE_INT, "maxretries", 2252 SYSCTL_DESCR("Number of times to retry ECN setup " 2253 "before disabling ECN on the connection"), 2254 NULL, 0, &tcp_ecn_maxretries, 0, CTL_CREATE, CTL_EOL); 2255 2256 /* SACK gets it's own little subtree. */ 2257 sysctl_createv(clog, 0, NULL, &sack_node, 2258 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2259 CTLTYPE_INT, "enable", 2260 SYSCTL_DESCR("Enable RFC2018 Selective ACKnowledgement"), 2261 NULL, 0, &tcp_do_sack, 0, 2262 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); 2263 sysctl_createv(clog, 0, NULL, &sack_node, 2264 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2265 CTLTYPE_INT, "maxholes", 2266 SYSCTL_DESCR("Maximum number of TCP SACK holes allowed per connection"), 2267 NULL, 0, &tcp_sack_tp_maxholes, 0, 2268 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); 2269 sysctl_createv(clog, 0, NULL, &sack_node, 2270 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2271 CTLTYPE_INT, "globalmaxholes", 2272 SYSCTL_DESCR("Global maximum number of TCP SACK holes"), 2273 NULL, 0, &tcp_sack_globalmaxholes, 0, 2274 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); 2275 sysctl_createv(clog, 0, NULL, &sack_node, 2276 CTLFLAG_PERMANENT, 2277 CTLTYPE_INT, "globalholes", 2278 SYSCTL_DESCR("Global number of TCP SACK holes"), 2279 NULL, 0, &tcp_sack_globalholes, 0, 2280 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); 2281 2282 sysctl_createv(clog, 0, NULL, NULL, 2283 CTLFLAG_PERMANENT, 2284 CTLTYPE_STRUCT, "stats", 2285 SYSCTL_DESCR("TCP statistics"), 2286 sysctl_net_inet_tcp_stats, 0, NULL, 0, 2287 CTL_NET, pf, IPPROTO_TCP, TCPCTL_STATS, 2288 CTL_EOL); 2289 sysctl_createv(clog, 0, NULL, NULL, 2290 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2291 CTLTYPE_INT, "local_by_rtt", 2292 SYSCTL_DESCR("Use RTT estimator to decide which hosts " 2293 "are local"), 2294 NULL, 0, &tcp_rttlocal, 0, 2295 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2296 #ifdef TCP_DEBUG 2297 sysctl_createv(clog, 0, NULL, NULL, 2298 CTLFLAG_PERMANENT, 2299 CTLTYPE_STRUCT, "debug", 2300 SYSCTL_DESCR("TCP sockets debug information"), 2301 NULL, 0, &tcp_debug, sizeof(tcp_debug), 2302 CTL_NET, pf, IPPROTO_TCP, TCPCTL_DEBUG, 2303 CTL_EOL); 2304 sysctl_createv(clog, 0, NULL, NULL, 2305 CTLFLAG_PERMANENT, 2306 CTLTYPE_INT, "debx", 2307 SYSCTL_DESCR("Number of TCP debug sockets messages"), 2308 NULL, 0, &tcp_debx, sizeof(tcp_debx), 2309 CTL_NET, pf, IPPROTO_TCP, TCPCTL_DEBX, 2310 CTL_EOL); 2311 #endif 2312 sysctl_createv(clog, 0, NULL, NULL, 2313 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2314 CTLTYPE_STRUCT, "drop", 2315 SYSCTL_DESCR("TCP drop connection"), 2316 sysctl_net_inet_tcp_drop, 0, NULL, 0, 2317 CTL_NET, pf, IPPROTO_TCP, TCPCTL_DROP, CTL_EOL); 2318 sysctl_createv(clog, 0, NULL, NULL, 2319 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2320 CTLTYPE_INT, "iss_hash", 2321 SYSCTL_DESCR("Enable RFC 1948 ISS by cryptographic " 2322 "hash computation"), 2323 NULL, 0, &tcp_do_rfc1948, sizeof(tcp_do_rfc1948), 2324 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, 2325 CTL_EOL); 2326 2327 /* ABC subtree */ 2328 2329 sysctl_createv(clog, 0, NULL, &abc_node, 2330 CTLFLAG_PERMANENT, CTLTYPE_NODE, "abc", 2331 SYSCTL_DESCR("RFC3465 Appropriate Byte Counting (ABC)"), 2332 NULL, 0, NULL, 0, 2333 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2334 sysctl_createv(clog, 0, &abc_node, NULL, 2335 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2336 CTLTYPE_INT, "enable", 2337 SYSCTL_DESCR("Enable RFC3465 Appropriate Byte Counting"), 2338 NULL, 0, &tcp_do_abc, 0, CTL_CREATE, CTL_EOL); 2339 sysctl_createv(clog, 0, &abc_node, NULL, 2340 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2341 CTLTYPE_INT, "aggressive", 2342 SYSCTL_DESCR("1: L=2*SMSS 0: L=1*SMSS"), 2343 NULL, 0, &tcp_abc_aggressive, 0, CTL_CREATE, CTL_EOL); 2344 2345 /* MSL tuning subtree */ 2346 2347 sysctl_createv(clog, 0, NULL, &mslt_node, 2348 CTLFLAG_PERMANENT, CTLTYPE_NODE, "mslt", 2349 SYSCTL_DESCR("MSL Tuning for TIME_WAIT truncation"), 2350 NULL, 0, NULL, 0, 2351 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2352 sysctl_createv(clog, 0, &mslt_node, NULL, 2353 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2354 CTLTYPE_INT, "enable", 2355 SYSCTL_DESCR("Enable TIME_WAIT truncation"), 2356 NULL, 0, &tcp_msl_enable, 0, CTL_CREATE, CTL_EOL); 2357 sysctl_createv(clog, 0, &mslt_node, NULL, 2358 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2359 CTLTYPE_INT, "loopback", 2360 SYSCTL_DESCR("MSL value to use for loopback connections"), 2361 NULL, 0, &tcp_msl_loop, 0, CTL_CREATE, CTL_EOL); 2362 sysctl_createv(clog, 0, &mslt_node, NULL, 2363 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2364 CTLTYPE_INT, "local", 2365 SYSCTL_DESCR("MSL value to use for local connections"), 2366 NULL, 0, &tcp_msl_local, 0, CTL_CREATE, CTL_EOL); 2367 sysctl_createv(clog, 0, &mslt_node, NULL, 2368 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2369 CTLTYPE_INT, "remote", 2370 SYSCTL_DESCR("MSL value to use for remote connections"), 2371 NULL, 0, &tcp_msl_remote, 0, CTL_CREATE, CTL_EOL); 2372 sysctl_createv(clog, 0, &mslt_node, NULL, 2373 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2374 CTLTYPE_INT, "remote_threshold", 2375 SYSCTL_DESCR("RTT estimate value to promote local to remote"), 2376 NULL, 0, &tcp_msl_remote_threshold, 0, CTL_CREATE, CTL_EOL); 2377 2378 /* vestigial TIME_WAIT tuning subtree */ 2379 2380 sysctl_createv(clog, 0, NULL, &vtw_node, 2381 CTLFLAG_PERMANENT, CTLTYPE_NODE, "vtw", 2382 SYSCTL_DESCR("Tuning for Vestigial TIME_WAIT"), 2383 NULL, 0, NULL, 0, 2384 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2385 sysctl_createv(clog, 0, &vtw_node, NULL, 2386 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2387 CTLTYPE_INT, "enable", 2388 SYSCTL_DESCR("Enable Vestigial TIME_WAIT"), 2389 sysctl_tcp_vtw_enable, 0, 2390 (pf == AF_INET) ? &tcp4_vtw_enable : &tcp6_vtw_enable, 2391 0, CTL_CREATE, CTL_EOL); 2392 sysctl_createv(clog, 0, &vtw_node, NULL, 2393 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 2394 CTLTYPE_INT, "entries", 2395 SYSCTL_DESCR("Maximum number of vestigial TIME_WAIT entries"), 2396 NULL, 0, &tcp_vtw_entries, 0, CTL_CREATE, CTL_EOL); 2397 } 2398 2399 void 2400 tcp_usrreq_init(void) 2401 { 2402 2403 #ifdef INET 2404 sysctl_net_inet_tcp_setup2(NULL, PF_INET, "inet", "tcp"); 2405 #endif 2406 #ifdef INET6 2407 sysctl_net_inet_tcp_setup2(NULL, PF_INET6, "inet6", "tcp6"); 2408 #endif 2409 } 2410 2411 PR_WRAP_USRREQS(tcp) 2412 #define tcp_attach tcp_attach_wrapper 2413 #define tcp_detach tcp_detach_wrapper 2414 #define tcp_accept tcp_accept_wrapper 2415 #define tcp_bind tcp_bind_wrapper 2416 #define tcp_listen tcp_listen_wrapper 2417 #define tcp_connect tcp_connect_wrapper 2418 #define tcp_disconnect tcp_disconnect_wrapper 2419 #define tcp_shutdown tcp_shutdown_wrapper 2420 #define tcp_abort tcp_abort_wrapper 2421 #define tcp_ioctl tcp_ioctl_wrapper 2422 #define tcp_stat tcp_stat_wrapper 2423 #define tcp_peeraddr tcp_peeraddr_wrapper 2424 #define tcp_sockaddr tcp_sockaddr_wrapper 2425 #define tcp_recvoob tcp_recvoob_wrapper 2426 #define tcp_sendoob tcp_sendoob_wrapper 2427 #define tcp_usrreq tcp_usrreq_wrapper 2428 2429 const struct pr_usrreqs tcp_usrreqs = { 2430 .pr_attach = tcp_attach, 2431 .pr_detach = tcp_detach, 2432 .pr_accept = tcp_accept, 2433 .pr_bind = tcp_bind, 2434 .pr_listen = tcp_listen, 2435 .pr_connect = tcp_connect, 2436 .pr_disconnect = tcp_disconnect, 2437 .pr_shutdown = tcp_shutdown, 2438 .pr_abort = tcp_abort, 2439 .pr_ioctl = tcp_ioctl, 2440 .pr_stat = tcp_stat, 2441 .pr_peeraddr = tcp_peeraddr, 2442 .pr_sockaddr = tcp_sockaddr, 2443 .pr_recvoob = tcp_recvoob, 2444 .pr_sendoob = tcp_sendoob, 2445 .pr_generic = tcp_usrreq, 2446 }; 2447
Indexes created Mon Sep 22 10:09:38 GMT 2025