tcp_usrreq.c revision 1.194
1 /* $NetBSD: tcp_usrreq.c,v 1.194 2014/07/31 03:39:35 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 1.194 2014/07/31 03:39:35 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; 708 709 KASSERT(solocked(so)); 710 711 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 712 return error; 713 714 ostate = tcp_debug_capture(tp, PRU_ACCEPT); 715 716 /* 717 * Accept a connection. Essentially all the work is 718 * done at higher levels; just return the address 719 * of the peer, storing through addr. 720 */ 721 #ifdef INET 722 if (inp) { 723 in_setpeeraddr(inp, nam); 724 } 725 #endif 726 #ifdef INET6 727 if (in6p) { 728 in6_setpeeraddr(in6p, nam); 729 } 730 #endif 731 tcp_debug_trace(so, tp, ostate, PRU_ACCEPT); 732 733 return 0; 734 } 735 736 static int 737 tcp_bind(struct socket *so, struct mbuf *nam) 738 { 739 struct inpcb *inp = NULL; 740 struct in6pcb *in6p = NULL; 741 struct tcpcb *tp = NULL; 742 int s; 743 int error = 0; 744 int ostate = 0; 745 746 KASSERT(solocked(so)); 747 748 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 749 return error; 750 751 ostate = tcp_debug_capture(tp, PRU_BIND); 752 753 /* 754 * Give the socket an address. 755 */ 756 s = splsoftnet(); 757 switch (so->so_proto->pr_domain->dom_family) { 758 #ifdef INET 759 case PF_INET: 760 error = in_pcbbind(inp, nam); 761 break; 762 #endif 763 #ifdef INET6 764 case PF_INET6: 765 error = in6_pcbbind(in6p, nam); 766 if (!error) { 767 /* mapped addr case */ 768 if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_laddr)) 769 tp->t_family = AF_INET; 770 else 771 tp->t_family = AF_INET6; 772 } 773 break; 774 #endif 775 } 776 777 tcp_debug_trace(so, tp, ostate, PRU_BIND); 778 splx(s); 779 780 return error; 781 } 782 783 static int 784 tcp_listen(struct socket *so) 785 { 786 struct inpcb *inp = NULL; 787 struct in6pcb *in6p = NULL; 788 struct tcpcb *tp = NULL; 789 int s; 790 int error = 0; 791 int ostate = 0; 792 793 KASSERT(solocked(so)); 794 795 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 796 return error; 797 798 ostate = tcp_debug_capture(tp, PRU_LISTEN); 799 800 /* 801 * Prepare to accept connections. 802 */ 803 s = splsoftnet(); 804 #ifdef INET 805 if (inp && inp->inp_lport == 0) { 806 error = in_pcbbind(inp, NULL); 807 if (error) 808 goto release; 809 } 810 #endif 811 #ifdef INET6 812 if (in6p && in6p->in6p_lport == 0) { 813 error = in6_pcbbind(in6p, NULL); 814 if (error) 815 goto release; 816 } 817 #endif 818 tp->t_state = TCPS_LISTEN; 819 820 release: 821 tcp_debug_trace(so, tp, ostate, PRU_LISTEN); 822 splx(s); 823 824 return error; 825 } 826 827 static int 828 tcp_connect(struct socket *so, struct mbuf *nam) 829 { 830 struct inpcb *inp = NULL; 831 struct in6pcb *in6p = NULL; 832 struct tcpcb *tp = NULL; 833 int s; 834 int error = 0; 835 int ostate = 0; 836 837 KASSERT(solocked(so)); 838 839 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 840 return error; 841 842 ostate = tcp_debug_capture(tp, PRU_CONNECT); 843 844 s = splsoftnet(); 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 #ifdef INET 854 if (inp) { 855 if (inp->inp_lport == 0) { 856 error = in_pcbbind(inp, NULL); 857 if (error) 858 goto release; 859 } 860 error = in_pcbconnect(inp, nam, curlwp); 861 } 862 #endif 863 #ifdef INET6 864 if (in6p) { 865 if (in6p->in6p_lport == 0) { 866 error = in6_pcbbind(in6p, NULL); 867 if (error) 868 goto release; 869 } 870 error = in6_pcbconnect(in6p, nam, curlwp); 871 if (!error) { 872 /* mapped addr case */ 873 if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_faddr)) 874 tp->t_family = AF_INET; 875 else 876 tp->t_family = AF_INET6; 877 } 878 } 879 #endif 880 if (error) 881 goto release; 882 tp->t_template = tcp_template(tp); 883 if (tp->t_template == 0) { 884 #ifdef INET 885 if (inp) 886 in_pcbdisconnect(inp); 887 #endif 888 #ifdef INET6 889 if (in6p) 890 in6_pcbdisconnect(in6p); 891 #endif 892 error = ENOBUFS; 893 goto release; 894 } 895 /* 896 * Compute window scaling to request. 897 * XXX: This should be moved to tcp_output(). 898 */ 899 while (tp->request_r_scale < TCP_MAX_WINSHIFT && 900 (TCP_MAXWIN << tp->request_r_scale) < sb_max) 901 tp->request_r_scale++; 902 soisconnecting(so); 903 TCP_STATINC(TCP_STAT_CONNATTEMPT); 904 tp->t_state = TCPS_SYN_SENT; 905 TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepinit); 906 tp->iss = tcp_new_iss(tp, 0); 907 tcp_sendseqinit(tp); 908 error = tcp_output(tp); 909 910 release: 911 tcp_debug_trace(so, tp, ostate, PRU_CONNECT); 912 splx(s); 913 914 return error; 915 } 916 917 static int 918 tcp_disconnect(struct socket *so) 919 { 920 struct inpcb *inp = NULL; 921 struct in6pcb *in6p = NULL; 922 struct tcpcb *tp = NULL; 923 int s; 924 int error = 0; 925 int ostate = 0; 926 927 KASSERT(solocked(so)); 928 929 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 930 return error; 931 932 ostate = tcp_debug_capture(tp, PRU_DISCONNECT); 933 934 /* 935 * Initiate disconnect from peer. 936 * If connection never passed embryonic stage, just drop; 937 * else if don't need to let data drain, then can just drop anyways, 938 * else have to begin TCP shutdown process: mark socket disconnecting, 939 * drain unread data, state switch to reflect user close, and 940 * send segment (e.g. FIN) to peer. Socket will be really disconnected 941 * when peer sends FIN and acks ours. 942 * 943 * SHOULD IMPLEMENT LATER PRU_CONNECT VIA REALLOC TCPCB. 944 */ 945 s = splsoftnet(); 946 tp = tcp_disconnect1(tp); 947 tcp_debug_trace(so, tp, ostate, PRU_DISCONNECT); 948 splx(s); 949 950 return error; 951 } 952 953 static int 954 tcp_shutdown(struct socket *so) 955 { 956 struct inpcb *inp = NULL; 957 struct in6pcb *in6p = NULL; 958 struct tcpcb *tp = NULL; 959 int s; 960 int error = 0; 961 int ostate = 0; 962 963 KASSERT(solocked(so)); 964 965 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 966 return error; 967 968 ostate = tcp_debug_capture(tp, PRU_SHUTDOWN); 969 /* 970 * Mark the connection as being incapable of further output. 971 */ 972 s = splsoftnet(); 973 socantsendmore(so); 974 tp = tcp_usrclosed(tp); 975 if (tp) 976 error = tcp_output(tp); 977 tcp_debug_trace(so, tp, ostate, PRU_SHUTDOWN); 978 splx(s); 979 980 return error; 981 } 982 983 static int 984 tcp_abort(struct socket *so) 985 { 986 struct inpcb *inp = NULL; 987 struct in6pcb *in6p = NULL; 988 struct tcpcb *tp = NULL; 989 int s; 990 int error = 0; 991 int ostate = 0; 992 993 KASSERT(solocked(so)); 994 995 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 996 return error; 997 998 ostate = tcp_debug_capture(tp, PRU_ABORT); 999 1000 /* 1001 * Abort the TCP. 1002 */ 1003 s = splsoftnet(); 1004 tp = tcp_drop(tp, ECONNABORTED); 1005 tcp_debug_trace(so, tp, ostate, PRU_ABORT); 1006 splx(s); 1007 1008 return error; 1009 } 1010 1011 static int 1012 tcp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1013 { 1014 switch (so->so_proto->pr_domain->dom_family) { 1015 #ifdef INET 1016 case PF_INET: 1017 return in_control(so, cmd, nam, ifp); 1018 #endif 1019 #ifdef INET6 1020 case PF_INET6: 1021 return in6_control(so, cmd, nam, ifp); 1022 #endif 1023 default: 1024 return EAFNOSUPPORT; 1025 } 1026 } 1027 1028 static int 1029 tcp_stat(struct socket *so, struct stat *ub) 1030 { 1031 KASSERT(solocked(so)); 1032 1033 /* stat: don't bother with a blocksize. */ 1034 return 0; 1035 } 1036 1037 static int 1038 tcp_peeraddr(struct socket *so, struct mbuf *nam) 1039 { 1040 struct inpcb *inp = NULL; 1041 struct in6pcb *in6p = NULL; 1042 struct tcpcb *tp = NULL; 1043 int ostate = 0; 1044 int error = 0; 1045 1046 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 1047 return error; 1048 1049 ostate = tcp_debug_capture(tp, PRU_PEERADDR); 1050 1051 #ifdef INET 1052 if (inp) 1053 in_setpeeraddr(inp, nam); 1054 #endif 1055 #ifdef INET6 1056 if (in6p) 1057 in6_setpeeraddr(in6p, nam); 1058 #endif 1059 1060 tcp_debug_trace(so, tp, ostate, PRU_PEERADDR); 1061 1062 return 0; 1063 } 1064 1065 static int 1066 tcp_sockaddr(struct socket *so, struct mbuf *nam) 1067 { 1068 struct inpcb *inp = NULL; 1069 struct in6pcb *in6p = NULL; 1070 struct tcpcb *tp = NULL; 1071 int ostate = 0; 1072 int error = 0; 1073 1074 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 1075 return error; 1076 1077 ostate = tcp_debug_capture(tp, PRU_SOCKADDR); 1078 1079 #ifdef INET 1080 if (inp) 1081 in_setsockaddr(inp, nam); 1082 #endif 1083 #ifdef INET6 1084 if (in6p) 1085 in6_setsockaddr(in6p, nam); 1086 #endif 1087 1088 tcp_debug_trace(so, tp, ostate, PRU_SOCKADDR); 1089 1090 return 0; 1091 } 1092 1093 static int 1094 tcp_recvoob(struct socket *so, struct mbuf *m, int flags) 1095 { 1096 struct inpcb *inp = NULL; 1097 struct in6pcb *in6p = NULL; 1098 struct tcpcb *tp = NULL; 1099 int ostate = 0; 1100 int error = 0; 1101 1102 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 1103 return error; 1104 1105 ostate = tcp_debug_capture(tp, PRU_RCVOOB); 1106 1107 if ((so->so_oobmark == 0 && 1108 (so->so_state & SS_RCVATMARK) == 0) || 1109 so->so_options & SO_OOBINLINE || 1110 tp->t_oobflags & TCPOOB_HADDATA) 1111 return EINVAL; 1112 1113 if ((tp->t_oobflags & TCPOOB_HAVEDATA) == 0) 1114 return EWOULDBLOCK; 1115 1116 m->m_len = 1; 1117 *mtod(m, char *) = tp->t_iobc; 1118 if ((flags & MSG_PEEK) == 0) 1119 tp->t_oobflags ^= (TCPOOB_HAVEDATA | TCPOOB_HADDATA); 1120 1121 tcp_debug_trace(so, tp, ostate, PRU_RCVOOB); 1122 1123 return 0; 1124 } 1125 1126 static int 1127 tcp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 1128 { 1129 struct inpcb *inp = NULL; 1130 struct in6pcb *in6p = NULL; 1131 struct tcpcb *tp = NULL; 1132 int ostate = 0; 1133 int error = 0; 1134 1135 if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) 1136 return error; 1137 1138 ostate = tcp_debug_capture(tp, PRU_SENDOOB); 1139 1140 if (sbspace(&so->so_snd) < -512) { 1141 m_freem(m); 1142 return ENOBUFS; 1143 } 1144 /* 1145 * According to RFC961 (Assigned Protocols), 1146 * the urgent pointer points to the last octet 1147 * of urgent data. We continue, however, 1148 * to consider it to indicate the first octet 1149 * of data past the urgent section. 1150 * Otherwise, snd_up should be one lower. 1151 */ 1152 sbappendstream(&so->so_snd, m); 1153 tp->snd_up = tp->snd_una + so->so_snd.sb_cc; 1154 tp->t_force = 1; 1155 error = tcp_output(tp); 1156 tp->t_force = 0; 1157 1158 tcp_debug_trace(so, tp, ostate, PRU_SENDOOB); 1159 1160 return error; 1161 } 1162 1163 /* 1164 * Initiate (or continue) disconnect. 1165 * If embryonic state, just send reset (once). 1166 * If in ``let data drain'' option and linger null, just drop. 1167 * Otherwise (hard), mark socket disconnecting and drop 1168 * current input data; switch states based on user close, and 1169 * send segment to peer (with FIN). 1170 */ 1171 struct tcpcb * 1172 tcp_disconnect1(struct tcpcb *tp) 1173 { 1174 struct socket *so; 1175 1176 if (tp->t_inpcb) 1177 so = tp->t_inpcb->inp_socket; 1178 #ifdef INET6 1179 else if (tp->t_in6pcb) 1180 so = tp->t_in6pcb->in6p_socket; 1181 #endif 1182 else 1183 so = NULL; 1184 1185 if (TCPS_HAVEESTABLISHED(tp->t_state) == 0) 1186 tp = tcp_close(tp); 1187 else if ((so->so_options & SO_LINGER) && so->so_linger == 0) 1188 tp = tcp_drop(tp, 0); 1189 else { 1190 soisdisconnecting(so); 1191 sbflush(&so->so_rcv); 1192 tp = tcp_usrclosed(tp); 1193 if (tp) 1194 (void) tcp_output(tp); 1195 } 1196 return (tp); 1197 } 1198 1199 /* 1200 * User issued close, and wish to trail through shutdown states: 1201 * if never received SYN, just forget it. If got a SYN from peer, 1202 * but haven't sent FIN, then go to FIN_WAIT_1 state to send peer a FIN. 1203 * If already got a FIN from peer, then almost done; go to LAST_ACK 1204 * state. In all other cases, have already sent FIN to peer (e.g. 1205 * after PRU_SHUTDOWN), and just have to play tedious game waiting 1206 * for peer to send FIN or not respond to keep-alives, etc. 1207 * We can let the user exit from the close as soon as the FIN is acked. 1208 */ 1209 struct tcpcb * 1210 tcp_usrclosed(struct tcpcb *tp) 1211 { 1212 1213 switch (tp->t_state) { 1214 1215 case TCPS_CLOSED: 1216 case TCPS_LISTEN: 1217 case TCPS_SYN_SENT: 1218 tp->t_state = TCPS_CLOSED; 1219 tp = tcp_close(tp); 1220 break; 1221 1222 case TCPS_SYN_RECEIVED: 1223 case TCPS_ESTABLISHED: 1224 tp->t_state = TCPS_FIN_WAIT_1; 1225 break; 1226 1227 case TCPS_CLOSE_WAIT: 1228 tp->t_state = TCPS_LAST_ACK; 1229 break; 1230 } 1231 if (tp && tp->t_state >= TCPS_FIN_WAIT_2) { 1232 struct socket *so; 1233 if (tp->t_inpcb) 1234 so = tp->t_inpcb->inp_socket; 1235 #ifdef INET6 1236 else if (tp->t_in6pcb) 1237 so = tp->t_in6pcb->in6p_socket; 1238 #endif 1239 else 1240 so = NULL; 1241 if (so) 1242 soisdisconnected(so); 1243 /* 1244 * If we are in FIN_WAIT_2, we arrived here because the 1245 * application did a shutdown of the send side. Like the 1246 * case of a transition from FIN_WAIT_1 to FIN_WAIT_2 after 1247 * a full close, we start a timer to make sure sockets are 1248 * not left in FIN_WAIT_2 forever. 1249 */ 1250 if ((tp->t_state == TCPS_FIN_WAIT_2) && (tp->t_maxidle > 0)) 1251 TCP_TIMER_ARM(tp, TCPT_2MSL, tp->t_maxidle); 1252 else if (tp->t_state == TCPS_TIME_WAIT 1253 && ((tp->t_inpcb 1254 && (tcp4_vtw_enable & 1) 1255 && vtw_add(AF_INET, tp)) 1256 || 1257 (tp->t_in6pcb 1258 && (tcp6_vtw_enable & 1) 1259 && vtw_add(AF_INET6, tp)))) { 1260 tp = 0; 1261 } 1262 } 1263 return (tp); 1264 } 1265 1266 /* 1267 * sysctl helper routine for net.inet.ip.mssdflt. it can't be less 1268 * than 32. 1269 */ 1270 static int 1271 sysctl_net_inet_tcp_mssdflt(SYSCTLFN_ARGS) 1272 { 1273 int error, mssdflt; 1274 struct sysctlnode node; 1275 1276 mssdflt = tcp_mssdflt; 1277 node = *rnode; 1278 node.sysctl_data = &mssdflt; 1279 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1280 if (error || newp == NULL) 1281 return (error); 1282 1283 if (mssdflt < 32) 1284 return (EINVAL); 1285 tcp_mssdflt = mssdflt; 1286 1287 mutex_enter(softnet_lock); 1288 tcp_tcpcb_template(); 1289 mutex_exit(softnet_lock); 1290 1291 return (0); 1292 } 1293 1294 /* 1295 * sysctl helper for TCP CB template update 1296 */ 1297 static int 1298 sysctl_update_tcpcb_template(SYSCTLFN_ARGS) 1299 { 1300 int t, error; 1301 struct sysctlnode node; 1302 1303 /* follow procedures in sysctl(9) manpage */ 1304 t = *(int *)rnode->sysctl_data; 1305 node = *rnode; 1306 node.sysctl_data = &t; 1307 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1308 if (error || newp == NULL) 1309 return error; 1310 1311 if (t < 0) 1312 return EINVAL; 1313 1314 *(int *)rnode->sysctl_data = t; 1315 1316 mutex_enter(softnet_lock); 1317 tcp_tcpcb_template(); 1318 mutex_exit(softnet_lock); 1319 1320 return 0; 1321 } 1322 1323 /* 1324 * sysctl helper routine for setting port related values under 1325 * net.inet.ip and net.inet6.ip6. does basic range checking and does 1326 * additional checks for each type. this code has placed in 1327 * tcp_input.c since INET and INET6 both use the same tcp code. 1328 * 1329 * this helper is not static so that both inet and inet6 can use it. 1330 */ 1331 int 1332 sysctl_net_inet_ip_ports(SYSCTLFN_ARGS) 1333 { 1334 int error, tmp; 1335 int apmin, apmax; 1336 #ifndef IPNOPRIVPORTS 1337 int lpmin, lpmax; 1338 #endif /* IPNOPRIVPORTS */ 1339 struct sysctlnode node; 1340 1341 if (namelen != 0) 1342 return (EINVAL); 1343 1344 switch (name[-3]) { 1345 #ifdef INET 1346 case PF_INET: 1347 apmin = anonportmin; 1348 apmax = anonportmax; 1349 #ifndef IPNOPRIVPORTS 1350 lpmin = lowportmin; 1351 lpmax = lowportmax; 1352 #endif /* IPNOPRIVPORTS */ 1353 break; 1354 #endif /* INET */ 1355 #ifdef INET6 1356 case PF_INET6: 1357 apmin = ip6_anonportmin; 1358 apmax = ip6_anonportmax; 1359 #ifndef IPNOPRIVPORTS 1360 lpmin = ip6_lowportmin; 1361 lpmax = ip6_lowportmax; 1362 #endif /* IPNOPRIVPORTS */ 1363 break; 1364 #endif /* INET6 */ 1365 default: 1366 return (EINVAL); 1367 } 1368 1369 /* 1370 * insert temporary copy into node, perform lookup on 1371 * temporary, then restore pointer 1372 */ 1373 node = *rnode; 1374 tmp = *(int*)rnode->sysctl_data; 1375 node.sysctl_data = &tmp; 1376 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1377 if (error || newp == NULL) 1378 return (error); 1379 1380 /* 1381 * simple port range check 1382 */ 1383 if (tmp < 0 || tmp > 65535) 1384 return (EINVAL); 1385 1386 /* 1387 * per-node range checks 1388 */ 1389 switch (rnode->sysctl_num) { 1390 case IPCTL_ANONPORTMIN: 1391 case IPV6CTL_ANONPORTMIN: 1392 if (tmp >= apmax) 1393 return (EINVAL); 1394 #ifndef IPNOPRIVPORTS 1395 if (tmp < IPPORT_RESERVED) 1396 return (EINVAL); 1397 #endif /* IPNOPRIVPORTS */ 1398 break; 1399 1400 case IPCTL_ANONPORTMAX: 1401 case IPV6CTL_ANONPORTMAX: 1402 if (apmin >= tmp) 1403 return (EINVAL); 1404 #ifndef IPNOPRIVPORTS 1405 if (tmp < IPPORT_RESERVED) 1406 return (EINVAL); 1407 #endif /* IPNOPRIVPORTS */ 1408 break; 1409 1410 #ifndef IPNOPRIVPORTS 1411 case IPCTL_LOWPORTMIN: 1412 case IPV6CTL_LOWPORTMIN: 1413 if (tmp >= lpmax || 1414 tmp > IPPORT_RESERVEDMAX || 1415 tmp < IPPORT_RESERVEDMIN) 1416 return (EINVAL); 1417 break; 1418 1419 case IPCTL_LOWPORTMAX: 1420 case IPV6CTL_LOWPORTMAX: 1421 if (lpmin >= tmp || 1422 tmp > IPPORT_RESERVEDMAX || 1423 tmp < IPPORT_RESERVEDMIN) 1424 return (EINVAL); 1425 break; 1426 #endif /* IPNOPRIVPORTS */ 1427 1428 default: 1429 return (EINVAL); 1430 } 1431 1432 *(int*)rnode->sysctl_data = tmp; 1433 1434 return (0); 1435 } 1436 1437 static inline int 1438 copyout_uid(struct socket *sockp, void *oldp, size_t *oldlenp) 1439 { 1440 if (oldp) { 1441 size_t sz; 1442 uid_t uid; 1443 int error; 1444 1445 if (sockp->so_cred == NULL) 1446 return EPERM; 1447 1448 uid = kauth_cred_geteuid(sockp->so_cred); 1449 sz = MIN(sizeof(uid), *oldlenp); 1450 if ((error = copyout(&uid, oldp, sz)) != 0) 1451 return error; 1452 } 1453 *oldlenp = sizeof(uid_t); 1454 return 0; 1455 } 1456 1457 static inline int 1458 inet4_ident_core(struct in_addr raddr, u_int rport, 1459 struct in_addr laddr, u_int lport, 1460 void *oldp, size_t *oldlenp, 1461 struct lwp *l, int dodrop) 1462 { 1463 struct inpcb *inp; 1464 struct socket *sockp; 1465 1466 inp = in_pcblookup_connect(&tcbtable, raddr, rport, laddr, lport, 0); 1467 1468 if (inp == NULL || (sockp = inp->inp_socket) == NULL) 1469 return ESRCH; 1470 1471 if (dodrop) { 1472 struct tcpcb *tp; 1473 int error; 1474 1475 if (inp == NULL || (tp = intotcpcb(inp)) == NULL || 1476 (inp->inp_socket->so_options & SO_ACCEPTCONN) != 0) 1477 return ESRCH; 1478 1479 error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, 1480 KAUTH_REQ_NETWORK_SOCKET_DROP, inp->inp_socket, tp, NULL); 1481 if (error) 1482 return (error); 1483 1484 (void)tcp_drop(tp, ECONNABORTED); 1485 return 0; 1486 } 1487 else 1488 return copyout_uid(sockp, oldp, oldlenp); 1489 } 1490 1491 #ifdef INET6 1492 static inline int 1493 inet6_ident_core(struct in6_addr *raddr, u_int rport, 1494 struct in6_addr *laddr, u_int lport, 1495 void *oldp, size_t *oldlenp, 1496 struct lwp *l, int dodrop) 1497 { 1498 struct in6pcb *in6p; 1499 struct socket *sockp; 1500 1501 in6p = in6_pcblookup_connect(&tcbtable, raddr, rport, laddr, lport, 0, 0); 1502 1503 if (in6p == NULL || (sockp = in6p->in6p_socket) == NULL) 1504 return ESRCH; 1505 1506 if (dodrop) { 1507 struct tcpcb *tp; 1508 int error; 1509 1510 if (in6p == NULL || (tp = in6totcpcb(in6p)) == NULL || 1511 (in6p->in6p_socket->so_options & SO_ACCEPTCONN) != 0) 1512 return ESRCH; 1513 1514 error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, 1515 KAUTH_REQ_NETWORK_SOCKET_DROP, in6p->in6p_socket, tp, NULL); 1516 if (error) 1517 return (error); 1518 1519 (void)tcp_drop(tp, ECONNABORTED); 1520 return 0; 1521 } 1522 else 1523 return copyout_uid(sockp, oldp, oldlenp); 1524 } 1525 #endif 1526 1527 /* 1528 * sysctl helper routine for the net.inet.tcp.drop and 1529 * net.inet6.tcp6.drop nodes. 1530 */ 1531 #define sysctl_net_inet_tcp_drop sysctl_net_inet_tcp_ident 1532 1533 /* 1534 * sysctl helper routine for the net.inet.tcp.ident and 1535 * net.inet6.tcp6.ident nodes. contains backwards compat code for the 1536 * old way of looking up the ident information for ipv4 which involves 1537 * stuffing the port/addr pairs into the mib lookup. 1538 */ 1539 static int 1540 sysctl_net_inet_tcp_ident(SYSCTLFN_ARGS) 1541 { 1542 #ifdef INET 1543 struct sockaddr_in *si4[2]; 1544 #endif /* INET */ 1545 #ifdef INET6 1546 struct sockaddr_in6 *si6[2]; 1547 #endif /* INET6 */ 1548 struct sockaddr_storage sa[2]; 1549 int error, pf, dodrop; 1550 1551 dodrop = name[-1] == TCPCTL_DROP; 1552 if (dodrop) { 1553 if (oldp != NULL || *oldlenp != 0) 1554 return EINVAL; 1555 if (newp == NULL) 1556 return EPERM; 1557 if (newlen < sizeof(sa)) 1558 return ENOMEM; 1559 } 1560 if (namelen != 4 && namelen != 0) 1561 return EINVAL; 1562 if (name[-2] != IPPROTO_TCP) 1563 return EINVAL; 1564 pf = name[-3]; 1565 1566 /* old style lookup, ipv4 only */ 1567 if (namelen == 4) { 1568 #ifdef INET 1569 struct in_addr laddr, raddr; 1570 u_int lport, rport; 1571 1572 if (pf != PF_INET) 1573 return EPROTONOSUPPORT; 1574 raddr.s_addr = (uint32_t)name[0]; 1575 rport = (u_int)name[1]; 1576 laddr.s_addr = (uint32_t)name[2]; 1577 lport = (u_int)name[3]; 1578 1579 mutex_enter(softnet_lock); 1580 error = inet4_ident_core(raddr, rport, laddr, lport, 1581 oldp, oldlenp, l, dodrop); 1582 mutex_exit(softnet_lock); 1583 return error; 1584 #else /* INET */ 1585 return EINVAL; 1586 #endif /* INET */ 1587 } 1588 1589 if (newp == NULL || newlen != sizeof(sa)) 1590 return EINVAL; 1591 error = copyin(newp, &sa, newlen); 1592 if (error) 1593 return error; 1594 1595 /* 1596 * requested families must match 1597 */ 1598 if (pf != sa[0].ss_family || sa[0].ss_family != sa[1].ss_family) 1599 return EINVAL; 1600 1601 switch (pf) { 1602 #ifdef INET6 1603 case PF_INET6: 1604 si6[0] = (struct sockaddr_in6*)&sa[0]; 1605 si6[1] = (struct sockaddr_in6*)&sa[1]; 1606 if (si6[0]->sin6_len != sizeof(*si6[0]) || 1607 si6[1]->sin6_len != sizeof(*si6[1])) 1608 return EINVAL; 1609 1610 if (!IN6_IS_ADDR_V4MAPPED(&si6[0]->sin6_addr) && 1611 !IN6_IS_ADDR_V4MAPPED(&si6[1]->sin6_addr)) { 1612 error = sa6_embedscope(si6[0], ip6_use_defzone); 1613 if (error) 1614 return error; 1615 error = sa6_embedscope(si6[1], ip6_use_defzone); 1616 if (error) 1617 return error; 1618 1619 mutex_enter(softnet_lock); 1620 error = inet6_ident_core(&si6[0]->sin6_addr, 1621 si6[0]->sin6_port, &si6[1]->sin6_addr, 1622 si6[1]->sin6_port, oldp, oldlenp, l, dodrop); 1623 mutex_exit(softnet_lock); 1624 return error; 1625 } 1626 1627 if (IN6_IS_ADDR_V4MAPPED(&si6[0]->sin6_addr) != 1628 IN6_IS_ADDR_V4MAPPED(&si6[1]->sin6_addr)) 1629 return EINVAL; 1630 1631 in6_sin6_2_sin_in_sock((struct sockaddr *)&sa[0]); 1632 in6_sin6_2_sin_in_sock((struct sockaddr *)&sa[1]); 1633 /*FALLTHROUGH*/ 1634 #endif /* INET6 */ 1635 #ifdef INET 1636 case PF_INET: 1637 si4[0] = (struct sockaddr_in*)&sa[0]; 1638 si4[1] = (struct sockaddr_in*)&sa[1]; 1639 if (si4[0]->sin_len != sizeof(*si4[0]) || 1640 si4[0]->sin_len != sizeof(*si4[1])) 1641 return EINVAL; 1642 1643 mutex_enter(softnet_lock); 1644 error = inet4_ident_core(si4[0]->sin_addr, si4[0]->sin_port, 1645 si4[1]->sin_addr, si4[1]->sin_port, 1646 oldp, oldlenp, l, dodrop); 1647 mutex_exit(softnet_lock); 1648 return error; 1649 #endif /* INET */ 1650 default: 1651 return EPROTONOSUPPORT; 1652 } 1653 } 1654 1655 /* 1656 * sysctl helper for the inet and inet6 pcblists. handles tcp/udp and 1657 * inet/inet6, as well as raw pcbs for each. specifically not 1658 * declared static so that raw sockets and udp/udp6 can use it as 1659 * well. 1660 */ 1661 int 1662 sysctl_inpcblist(SYSCTLFN_ARGS) 1663 { 1664 #ifdef INET 1665 struct sockaddr_in *in; 1666 const struct inpcb *inp; 1667 #endif 1668 #ifdef INET6 1669 struct sockaddr_in6 *in6; 1670 const struct in6pcb *in6p; 1671 #endif 1672 struct inpcbtable *pcbtbl = __UNCONST(rnode->sysctl_data); 1673 const struct inpcb_hdr *inph; 1674 struct tcpcb *tp; 1675 struct kinfo_pcb pcb; 1676 char *dp; 1677 size_t len, needed, elem_size, out_size; 1678 int error, elem_count, pf, proto, pf2; 1679 1680 if (namelen != 4) 1681 return (EINVAL); 1682 1683 if (oldp != NULL) { 1684 len = *oldlenp; 1685 elem_size = name[2]; 1686 elem_count = name[3]; 1687 if (elem_size != sizeof(pcb)) 1688 return EINVAL; 1689 } else { 1690 len = 0; 1691 elem_count = INT_MAX; 1692 elem_size = sizeof(pcb); 1693 } 1694 error = 0; 1695 dp = oldp; 1696 out_size = elem_size; 1697 needed = 0; 1698 1699 if (namelen == 1 && name[0] == CTL_QUERY) 1700 return (sysctl_query(SYSCTLFN_CALL(rnode))); 1701 1702 if (name - oname != 4) 1703 return (EINVAL); 1704 1705 pf = oname[1]; 1706 proto = oname[2]; 1707 pf2 = (oldp != NULL) ? pf : 0; 1708 1709 mutex_enter(softnet_lock); 1710 1711 TAILQ_FOREACH(inph, &pcbtbl->inpt_queue, inph_queue) { 1712 #ifdef INET 1713 inp = (const struct inpcb *)inph; 1714 #endif 1715 #ifdef INET6 1716 in6p = (const struct in6pcb *)inph; 1717 #endif 1718 1719 if (inph->inph_af != pf) 1720 continue; 1721 1722 if (kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, 1723 KAUTH_REQ_NETWORK_SOCKET_CANSEE, inph->inph_socket, NULL, 1724 NULL) != 0) 1725 continue; 1726 1727 memset(&pcb, 0, sizeof(pcb)); 1728 1729 pcb.ki_family = pf; 1730 pcb.ki_type = proto; 1731 1732 switch (pf2) { 1733 case 0: 1734 /* just probing for size */ 1735 break; 1736 #ifdef INET 1737 case PF_INET: 1738 pcb.ki_family = inp->inp_socket->so_proto-> 1739 pr_domain->dom_family; 1740 pcb.ki_type = inp->inp_socket->so_proto-> 1741 pr_type; 1742 pcb.ki_protocol = inp->inp_socket->so_proto-> 1743 pr_protocol; 1744 pcb.ki_pflags = inp->inp_flags; 1745 1746 pcb.ki_sostate = inp->inp_socket->so_state; 1747 pcb.ki_prstate = inp->inp_state; 1748 if (proto == IPPROTO_TCP) { 1749 tp = intotcpcb(inp); 1750 pcb.ki_tstate = tp->t_state; 1751 pcb.ki_tflags = tp->t_flags; 1752 } 1753 1754 pcb.ki_pcbaddr = PTRTOUINT64(inp); 1755 pcb.ki_ppcbaddr = PTRTOUINT64(inp->inp_ppcb); 1756 pcb.ki_sockaddr = PTRTOUINT64(inp->inp_socket); 1757 1758 pcb.ki_rcvq = inp->inp_socket->so_rcv.sb_cc; 1759 pcb.ki_sndq = inp->inp_socket->so_snd.sb_cc; 1760 1761 in = satosin(&pcb.ki_src); 1762 in->sin_len = sizeof(*in); 1763 in->sin_family = pf; 1764 in->sin_port = inp->inp_lport; 1765 in->sin_addr = inp->inp_laddr; 1766 if (pcb.ki_prstate >= INP_CONNECTED) { 1767 in = satosin(&pcb.ki_dst); 1768 in->sin_len = sizeof(*in); 1769 in->sin_family = pf; 1770 in->sin_port = inp->inp_fport; 1771 in->sin_addr = inp->inp_faddr; 1772 } 1773 break; 1774 #endif 1775 #ifdef INET6 1776 case PF_INET6: 1777 pcb.ki_family = in6p->in6p_socket->so_proto-> 1778 pr_domain->dom_family; 1779 pcb.ki_type = in6p->in6p_socket->so_proto->pr_type; 1780 pcb.ki_protocol = in6p->in6p_socket->so_proto-> 1781 pr_protocol; 1782 pcb.ki_pflags = in6p->in6p_flags; 1783 1784 pcb.ki_sostate = in6p->in6p_socket->so_state; 1785 pcb.ki_prstate = in6p->in6p_state; 1786 if (proto == IPPROTO_TCP) { 1787 tp = in6totcpcb(in6p); 1788 pcb.ki_tstate = tp->t_state; 1789 pcb.ki_tflags = tp->t_flags; 1790 } 1791 1792 pcb.ki_pcbaddr = PTRTOUINT64(in6p); 1793 pcb.ki_ppcbaddr = PTRTOUINT64(in6p->in6p_ppcb); 1794 pcb.ki_sockaddr = PTRTOUINT64(in6p->in6p_socket); 1795 1796 pcb.ki_rcvq = in6p->in6p_socket->so_rcv.sb_cc; 1797 pcb.ki_sndq = in6p->in6p_socket->so_snd.sb_cc; 1798 1799 in6 = satosin6(&pcb.ki_src); 1800 in6->sin6_len = sizeof(*in6); 1801 in6->sin6_family = pf; 1802 in6->sin6_port = in6p->in6p_lport; 1803 in6->sin6_flowinfo = in6p->in6p_flowinfo; 1804 in6->sin6_addr = in6p->in6p_laddr; 1805 in6->sin6_scope_id = 0; /* XXX? */ 1806 1807 if (pcb.ki_prstate >= IN6P_CONNECTED) { 1808 in6 = satosin6(&pcb.ki_dst); 1809 in6->sin6_len = sizeof(*in6); 1810 in6->sin6_family = pf; 1811 in6->sin6_port = in6p->in6p_fport; 1812 in6->sin6_flowinfo = in6p->in6p_flowinfo; 1813 in6->sin6_addr = in6p->in6p_faddr; 1814 in6->sin6_scope_id = 0; /* XXX? */ 1815 } 1816 break; 1817 #endif 1818 } 1819 1820 if (len >= elem_size && elem_count > 0) { 1821 error = copyout(&pcb, dp, out_size); 1822 if (error) { 1823 mutex_exit(softnet_lock); 1824 return (error); 1825 } 1826 dp += elem_size; 1827 len -= elem_size; 1828 } 1829 needed += elem_size; 1830 if (elem_count > 0 && elem_count != INT_MAX) 1831 elem_count--; 1832 } 1833 1834 *oldlenp = needed; 1835 if (oldp == NULL) 1836 *oldlenp += PCB_SLOP * sizeof(struct kinfo_pcb); 1837 1838 mutex_exit(softnet_lock); 1839 1840 return (error); 1841 } 1842 1843 static int 1844 sysctl_tcp_congctl(SYSCTLFN_ARGS) 1845 { 1846 struct sysctlnode node; 1847 int error; 1848 char newname[TCPCC_MAXLEN]; 1849 1850 strlcpy(newname, tcp_congctl_global_name, sizeof(newname) - 1); 1851 1852 node = *rnode; 1853 node.sysctl_data = newname; 1854 node.sysctl_size = sizeof(newname); 1855 1856 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1857 1858 if (error || 1859 newp == NULL || 1860 strncmp(newname, tcp_congctl_global_name, sizeof(newname)) == 0) 1861 return error; 1862 1863 mutex_enter(softnet_lock); 1864 error = tcp_congctl_select(NULL, newname); 1865 mutex_exit(softnet_lock); 1866 1867 return error; 1868 } 1869 1870 static int 1871 sysctl_tcp_init_win(SYSCTLFN_ARGS) 1872 { 1873 int error; 1874 u_int iw; 1875 struct sysctlnode node; 1876 1877 iw = *(u_int *)rnode->sysctl_data; 1878 node = *rnode; 1879 node.sysctl_data = &iw; 1880 node.sysctl_size = sizeof(iw); 1881 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1882 if (error || newp == NULL) 1883 return error; 1884 1885 if (iw >= __arraycount(tcp_init_win_max)) 1886 return EINVAL; 1887 *(u_int *)rnode->sysctl_data = iw; 1888 return 0; 1889 } 1890 1891 static int 1892 sysctl_tcp_keep(SYSCTLFN_ARGS) 1893 { 1894 int error; 1895 u_int tmp; 1896 struct sysctlnode node; 1897 1898 node = *rnode; 1899 tmp = *(u_int *)rnode->sysctl_data; 1900 node.sysctl_data = &tmp; 1901 1902 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 1903 if (error || newp == NULL) 1904 return error; 1905 1906 mutex_enter(softnet_lock); 1907 1908 *(u_int *)rnode->sysctl_data = tmp; 1909 tcp_tcpcb_template(); /* update the template */ 1910 1911 mutex_exit(softnet_lock); 1912 return 0; 1913 } 1914 1915 static int 1916 sysctl_net_inet_tcp_stats(SYSCTLFN_ARGS) 1917 { 1918 1919 return (NETSTAT_SYSCTL(tcpstat_percpu, TCP_NSTATS)); 1920 } 1921 1922 /* 1923 * this (second stage) setup routine is a replacement for tcp_sysctl() 1924 * (which is currently used for ipv4 and ipv6) 1925 */ 1926 static void 1927 sysctl_net_inet_tcp_setup2(struct sysctllog **clog, int pf, const char *pfname, 1928 const char *tcpname) 1929 { 1930 const struct sysctlnode *sack_node; 1931 const struct sysctlnode *abc_node; 1932 const struct sysctlnode *ecn_node; 1933 const struct sysctlnode *congctl_node; 1934 const struct sysctlnode *mslt_node; 1935 const struct sysctlnode *vtw_node; 1936 #ifdef TCP_DEBUG 1937 extern struct tcp_debug tcp_debug[TCP_NDEBUG]; 1938 extern int tcp_debx; 1939 #endif 1940 1941 sysctl_createv(clog, 0, NULL, NULL, 1942 CTLFLAG_PERMANENT, 1943 CTLTYPE_NODE, pfname, NULL, 1944 NULL, 0, NULL, 0, 1945 CTL_NET, pf, CTL_EOL); 1946 sysctl_createv(clog, 0, NULL, NULL, 1947 CTLFLAG_PERMANENT, 1948 CTLTYPE_NODE, tcpname, 1949 SYSCTL_DESCR("TCP related settings"), 1950 NULL, 0, NULL, 0, 1951 CTL_NET, pf, IPPROTO_TCP, CTL_EOL); 1952 1953 sysctl_createv(clog, 0, NULL, NULL, 1954 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1955 CTLTYPE_INT, "rfc1323", 1956 SYSCTL_DESCR("Enable RFC1323 TCP extensions"), 1957 sysctl_update_tcpcb_template, 0, &tcp_do_rfc1323, 0, 1958 CTL_NET, pf, IPPROTO_TCP, TCPCTL_RFC1323, CTL_EOL); 1959 sysctl_createv(clog, 0, NULL, NULL, 1960 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1961 CTLTYPE_INT, "sendspace", 1962 SYSCTL_DESCR("Default TCP send buffer size"), 1963 NULL, 0, &tcp_sendspace, 0, 1964 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SENDSPACE, CTL_EOL); 1965 sysctl_createv(clog, 0, NULL, NULL, 1966 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1967 CTLTYPE_INT, "recvspace", 1968 SYSCTL_DESCR("Default TCP receive buffer size"), 1969 NULL, 0, &tcp_recvspace, 0, 1970 CTL_NET, pf, IPPROTO_TCP, TCPCTL_RECVSPACE, CTL_EOL); 1971 sysctl_createv(clog, 0, NULL, NULL, 1972 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1973 CTLTYPE_INT, "mssdflt", 1974 SYSCTL_DESCR("Default maximum segment size"), 1975 sysctl_net_inet_tcp_mssdflt, 0, &tcp_mssdflt, 0, 1976 CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSSDFLT, CTL_EOL); 1977 sysctl_createv(clog, 0, NULL, NULL, 1978 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1979 CTLTYPE_INT, "minmss", 1980 SYSCTL_DESCR("Lower limit for TCP maximum segment size"), 1981 NULL, 0, &tcp_minmss, 0, 1982 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 1983 sysctl_createv(clog, 0, NULL, NULL, 1984 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1985 CTLTYPE_INT, "msl", 1986 SYSCTL_DESCR("Maximum Segment Life"), 1987 NULL, 0, &tcp_msl, 0, 1988 CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSL, CTL_EOL); 1989 sysctl_createv(clog, 0, NULL, NULL, 1990 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1991 CTLTYPE_INT, "syn_cache_limit", 1992 SYSCTL_DESCR("Maximum number of entries in the TCP " 1993 "compressed state engine"), 1994 NULL, 0, &tcp_syn_cache_limit, 0, 1995 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_CACHE_LIMIT, 1996 CTL_EOL); 1997 sysctl_createv(clog, 0, NULL, NULL, 1998 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 1999 CTLTYPE_INT, "syn_bucket_limit", 2000 SYSCTL_DESCR("Maximum number of entries per hash " 2001 "bucket in the TCP compressed state " 2002 "engine"), 2003 NULL, 0, &tcp_syn_bucket_limit, 0, 2004 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_BUCKET_LIMIT, 2005 CTL_EOL); 2006 #if 0 /* obsoleted */ 2007 sysctl_createv(clog, 0, NULL, NULL, 2008 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2009 CTLTYPE_INT, "syn_cache_interval", 2010 SYSCTL_DESCR("TCP compressed state engine's timer interval"), 2011 NULL, 0, &tcp_syn_cache_interval, 0, 2012 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_CACHE_INTER, 2013 CTL_EOL); 2014 #endif 2015 sysctl_createv(clog, 0, NULL, NULL, 2016 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2017 CTLTYPE_INT, "init_win", 2018 SYSCTL_DESCR("Initial TCP congestion window"), 2019 sysctl_tcp_init_win, 0, &tcp_init_win, 0, 2020 CTL_NET, pf, IPPROTO_TCP, TCPCTL_INIT_WIN, CTL_EOL); 2021 sysctl_createv(clog, 0, NULL, NULL, 2022 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2023 CTLTYPE_INT, "mss_ifmtu", 2024 SYSCTL_DESCR("Use interface MTU for calculating MSS"), 2025 NULL, 0, &tcp_mss_ifmtu, 0, 2026 CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSS_IFMTU, CTL_EOL); 2027 sysctl_createv(clog, 0, NULL, &sack_node, 2028 CTLFLAG_PERMANENT, 2029 CTLTYPE_NODE, "sack", 2030 SYSCTL_DESCR("RFC2018 Selective ACKnowledgement tunables"), 2031 NULL, 0, NULL, 0, 2032 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_EOL); 2033 2034 /* Congctl subtree */ 2035 sysctl_createv(clog, 0, NULL, &congctl_node, 2036 CTLFLAG_PERMANENT, 2037 CTLTYPE_NODE, "congctl", 2038 SYSCTL_DESCR("TCP Congestion Control"), 2039 NULL, 0, NULL, 0, 2040 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2041 sysctl_createv(clog, 0, &congctl_node, NULL, 2042 CTLFLAG_PERMANENT, 2043 CTLTYPE_STRING, "available", 2044 SYSCTL_DESCR("Available Congestion Control Mechanisms"), 2045 NULL, 0, tcp_congctl_avail, 0, CTL_CREATE, CTL_EOL); 2046 sysctl_createv(clog, 0, &congctl_node, NULL, 2047 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2048 CTLTYPE_STRING, "selected", 2049 SYSCTL_DESCR("Selected Congestion Control Mechanism"), 2050 sysctl_tcp_congctl, 0, NULL, TCPCC_MAXLEN, 2051 CTL_CREATE, CTL_EOL); 2052 2053 sysctl_createv(clog, 0, NULL, NULL, 2054 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2055 CTLTYPE_INT, "win_scale", 2056 SYSCTL_DESCR("Use RFC1323 window scale options"), 2057 sysctl_update_tcpcb_template, 0, &tcp_do_win_scale, 0, 2058 CTL_NET, pf, IPPROTO_TCP, TCPCTL_WSCALE, CTL_EOL); 2059 sysctl_createv(clog, 0, NULL, NULL, 2060 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2061 CTLTYPE_INT, "timestamps", 2062 SYSCTL_DESCR("Use RFC1323 time stamp options"), 2063 sysctl_update_tcpcb_template, 0, &tcp_do_timestamps, 0, 2064 CTL_NET, pf, IPPROTO_TCP, TCPCTL_TSTAMP, CTL_EOL); 2065 sysctl_createv(clog, 0, NULL, NULL, 2066 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2067 CTLTYPE_INT, "compat_42", 2068 SYSCTL_DESCR("Enable workarounds for 4.2BSD TCP bugs"), 2069 NULL, 0, &tcp_compat_42, 0, 2070 CTL_NET, pf, IPPROTO_TCP, TCPCTL_COMPAT_42, CTL_EOL); 2071 sysctl_createv(clog, 0, NULL, NULL, 2072 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2073 CTLTYPE_INT, "cwm", 2074 SYSCTL_DESCR("Hughes/Touch/Heidemann Congestion Window " 2075 "Monitoring"), 2076 NULL, 0, &tcp_cwm, 0, 2077 CTL_NET, pf, IPPROTO_TCP, TCPCTL_CWM, CTL_EOL); 2078 sysctl_createv(clog, 0, NULL, NULL, 2079 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2080 CTLTYPE_INT, "cwm_burstsize", 2081 SYSCTL_DESCR("Congestion Window Monitoring allowed " 2082 "burst count in packets"), 2083 NULL, 0, &tcp_cwm_burstsize, 0, 2084 CTL_NET, pf, IPPROTO_TCP, TCPCTL_CWM_BURSTSIZE, 2085 CTL_EOL); 2086 sysctl_createv(clog, 0, NULL, NULL, 2087 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2088 CTLTYPE_INT, "ack_on_push", 2089 SYSCTL_DESCR("Immediately return ACK when PSH is " 2090 "received"), 2091 NULL, 0, &tcp_ack_on_push, 0, 2092 CTL_NET, pf, IPPROTO_TCP, TCPCTL_ACK_ON_PUSH, CTL_EOL); 2093 sysctl_createv(clog, 0, NULL, NULL, 2094 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2095 CTLTYPE_INT, "keepidle", 2096 SYSCTL_DESCR("Allowed connection idle ticks before a " 2097 "keepalive probe is sent"), 2098 sysctl_tcp_keep, 0, &tcp_keepidle, 0, 2099 CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPIDLE, CTL_EOL); 2100 sysctl_createv(clog, 0, NULL, NULL, 2101 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2102 CTLTYPE_INT, "keepintvl", 2103 SYSCTL_DESCR("Ticks before next keepalive probe is sent"), 2104 sysctl_tcp_keep, 0, &tcp_keepintvl, 0, 2105 CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPINTVL, CTL_EOL); 2106 sysctl_createv(clog, 0, NULL, NULL, 2107 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2108 CTLTYPE_INT, "keepcnt", 2109 SYSCTL_DESCR("Number of keepalive probes to send"), 2110 sysctl_tcp_keep, 0, &tcp_keepcnt, 0, 2111 CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPCNT, CTL_EOL); 2112 sysctl_createv(clog, 0, NULL, NULL, 2113 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, 2114 CTLTYPE_INT, "slowhz", 2115 SYSCTL_DESCR("Keepalive ticks per second"), 2116 NULL, PR_SLOWHZ, NULL, 0, 2117 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SLOWHZ, CTL_EOL); 2118 sysctl_createv(clog, 0, NULL, NULL, 2119 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2120 CTLTYPE_INT, "log_refused", 2121 SYSCTL_DESCR("Log refused TCP connections"), 2122 NULL, 0, &tcp_log_refused, 0, 2123 CTL_NET, pf, IPPROTO_TCP, TCPCTL_LOG_REFUSED, CTL_EOL); 2124 #if 0 /* obsoleted */ 2125 sysctl_createv(clog, 0, NULL, NULL, 2126 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2127 CTLTYPE_INT, "rstratelimit", NULL, 2128 NULL, 0, &tcp_rst_ratelim, 0, 2129 CTL_NET, pf, IPPROTO_TCP, TCPCTL_RSTRATELIMIT, CTL_EOL); 2130 #endif 2131 sysctl_createv(clog, 0, NULL, NULL, 2132 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2133 CTLTYPE_INT, "rstppslimit", 2134 SYSCTL_DESCR("Maximum number of RST packets to send " 2135 "per second"), 2136 NULL, 0, &tcp_rst_ppslim, 0, 2137 CTL_NET, pf, IPPROTO_TCP, TCPCTL_RSTPPSLIMIT, CTL_EOL); 2138 sysctl_createv(clog, 0, NULL, NULL, 2139 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2140 CTLTYPE_INT, "delack_ticks", 2141 SYSCTL_DESCR("Number of ticks to delay sending an ACK"), 2142 NULL, 0, &tcp_delack_ticks, 0, 2143 CTL_NET, pf, IPPROTO_TCP, TCPCTL_DELACK_TICKS, CTL_EOL); 2144 sysctl_createv(clog, 0, NULL, NULL, 2145 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2146 CTLTYPE_INT, "init_win_local", 2147 SYSCTL_DESCR("Initial TCP window size (in segments)"), 2148 sysctl_tcp_init_win, 0, &tcp_init_win_local, 0, 2149 CTL_NET, pf, IPPROTO_TCP, TCPCTL_INIT_WIN_LOCAL, 2150 CTL_EOL); 2151 sysctl_createv(clog, 0, NULL, NULL, 2152 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2153 CTLTYPE_STRUCT, "ident", 2154 SYSCTL_DESCR("RFC1413 Identification Protocol lookups"), 2155 sysctl_net_inet_tcp_ident, 0, NULL, sizeof(uid_t), 2156 CTL_NET, pf, IPPROTO_TCP, TCPCTL_IDENT, CTL_EOL); 2157 sysctl_createv(clog, 0, NULL, NULL, 2158 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2159 CTLTYPE_INT, "do_loopback_cksum", 2160 SYSCTL_DESCR("Perform TCP checksum on loopback"), 2161 NULL, 0, &tcp_do_loopback_cksum, 0, 2162 CTL_NET, pf, IPPROTO_TCP, TCPCTL_LOOPBACKCKSUM, 2163 CTL_EOL); 2164 sysctl_createv(clog, 0, NULL, NULL, 2165 CTLFLAG_PERMANENT, 2166 CTLTYPE_STRUCT, "pcblist", 2167 SYSCTL_DESCR("TCP protocol control block list"), 2168 sysctl_inpcblist, 0, &tcbtable, 0, 2169 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, 2170 CTL_EOL); 2171 sysctl_createv(clog, 0, NULL, NULL, 2172 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2173 CTLTYPE_INT, "keepinit", 2174 SYSCTL_DESCR("Ticks before initial tcp connection times out"), 2175 sysctl_tcp_keep, 0, &tcp_keepinit, 0, 2176 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2177 2178 /* TCP socket buffers auto-sizing nodes */ 2179 sysctl_createv(clog, 0, NULL, NULL, 2180 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2181 CTLTYPE_INT, "recvbuf_auto", 2182 SYSCTL_DESCR("Enable automatic receive " 2183 "buffer sizing (experimental)"), 2184 NULL, 0, &tcp_do_autorcvbuf, 0, 2185 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2186 sysctl_createv(clog, 0, NULL, NULL, 2187 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2188 CTLTYPE_INT, "recvbuf_inc", 2189 SYSCTL_DESCR("Incrementor step size of " 2190 "automatic receive buffer"), 2191 NULL, 0, &tcp_autorcvbuf_inc, 0, 2192 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2193 sysctl_createv(clog, 0, NULL, NULL, 2194 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2195 CTLTYPE_INT, "recvbuf_max", 2196 SYSCTL_DESCR("Max size of automatic receive buffer"), 2197 NULL, 0, &tcp_autorcvbuf_max, 0, 2198 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2199 2200 sysctl_createv(clog, 0, NULL, NULL, 2201 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2202 CTLTYPE_INT, "sendbuf_auto", 2203 SYSCTL_DESCR("Enable automatic send " 2204 "buffer sizing (experimental)"), 2205 NULL, 0, &tcp_do_autosndbuf, 0, 2206 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2207 sysctl_createv(clog, 0, NULL, NULL, 2208 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2209 CTLTYPE_INT, "sendbuf_inc", 2210 SYSCTL_DESCR("Incrementor step size of " 2211 "automatic send buffer"), 2212 NULL, 0, &tcp_autosndbuf_inc, 0, 2213 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2214 sysctl_createv(clog, 0, NULL, NULL, 2215 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2216 CTLTYPE_INT, "sendbuf_max", 2217 SYSCTL_DESCR("Max size of automatic send buffer"), 2218 NULL, 0, &tcp_autosndbuf_max, 0, 2219 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2220 2221 /* ECN subtree */ 2222 sysctl_createv(clog, 0, NULL, &ecn_node, 2223 CTLFLAG_PERMANENT, 2224 CTLTYPE_NODE, "ecn", 2225 SYSCTL_DESCR("RFC3168 Explicit Congestion Notification"), 2226 NULL, 0, NULL, 0, 2227 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2228 sysctl_createv(clog, 0, &ecn_node, NULL, 2229 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2230 CTLTYPE_INT, "enable", 2231 SYSCTL_DESCR("Enable TCP Explicit Congestion " 2232 "Notification"), 2233 NULL, 0, &tcp_do_ecn, 0, CTL_CREATE, CTL_EOL); 2234 sysctl_createv(clog, 0, &ecn_node, NULL, 2235 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2236 CTLTYPE_INT, "maxretries", 2237 SYSCTL_DESCR("Number of times to retry ECN setup " 2238 "before disabling ECN on the connection"), 2239 NULL, 0, &tcp_ecn_maxretries, 0, CTL_CREATE, CTL_EOL); 2240 2241 /* SACK gets it's own little subtree. */ 2242 sysctl_createv(clog, 0, NULL, &sack_node, 2243 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2244 CTLTYPE_INT, "enable", 2245 SYSCTL_DESCR("Enable RFC2018 Selective ACKnowledgement"), 2246 NULL, 0, &tcp_do_sack, 0, 2247 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); 2248 sysctl_createv(clog, 0, NULL, &sack_node, 2249 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2250 CTLTYPE_INT, "maxholes", 2251 SYSCTL_DESCR("Maximum number of TCP SACK holes allowed per connection"), 2252 NULL, 0, &tcp_sack_tp_maxholes, 0, 2253 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); 2254 sysctl_createv(clog, 0, NULL, &sack_node, 2255 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2256 CTLTYPE_INT, "globalmaxholes", 2257 SYSCTL_DESCR("Global maximum number of TCP SACK holes"), 2258 NULL, 0, &tcp_sack_globalmaxholes, 0, 2259 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); 2260 sysctl_createv(clog, 0, NULL, &sack_node, 2261 CTLFLAG_PERMANENT, 2262 CTLTYPE_INT, "globalholes", 2263 SYSCTL_DESCR("Global number of TCP SACK holes"), 2264 NULL, 0, &tcp_sack_globalholes, 0, 2265 CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); 2266 2267 sysctl_createv(clog, 0, NULL, NULL, 2268 CTLFLAG_PERMANENT, 2269 CTLTYPE_STRUCT, "stats", 2270 SYSCTL_DESCR("TCP statistics"), 2271 sysctl_net_inet_tcp_stats, 0, NULL, 0, 2272 CTL_NET, pf, IPPROTO_TCP, TCPCTL_STATS, 2273 CTL_EOL); 2274 sysctl_createv(clog, 0, NULL, NULL, 2275 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2276 CTLTYPE_INT, "local_by_rtt", 2277 SYSCTL_DESCR("Use RTT estimator to decide which hosts " 2278 "are local"), 2279 NULL, 0, &tcp_rttlocal, 0, 2280 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2281 #ifdef TCP_DEBUG 2282 sysctl_createv(clog, 0, NULL, NULL, 2283 CTLFLAG_PERMANENT, 2284 CTLTYPE_STRUCT, "debug", 2285 SYSCTL_DESCR("TCP sockets debug information"), 2286 NULL, 0, &tcp_debug, sizeof(tcp_debug), 2287 CTL_NET, pf, IPPROTO_TCP, TCPCTL_DEBUG, 2288 CTL_EOL); 2289 sysctl_createv(clog, 0, NULL, NULL, 2290 CTLFLAG_PERMANENT, 2291 CTLTYPE_INT, "debx", 2292 SYSCTL_DESCR("Number of TCP debug sockets messages"), 2293 NULL, 0, &tcp_debx, sizeof(tcp_debx), 2294 CTL_NET, pf, IPPROTO_TCP, TCPCTL_DEBX, 2295 CTL_EOL); 2296 #endif 2297 sysctl_createv(clog, 0, NULL, NULL, 2298 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2299 CTLTYPE_STRUCT, "drop", 2300 SYSCTL_DESCR("TCP drop connection"), 2301 sysctl_net_inet_tcp_drop, 0, NULL, 0, 2302 CTL_NET, pf, IPPROTO_TCP, TCPCTL_DROP, CTL_EOL); 2303 sysctl_createv(clog, 0, NULL, NULL, 2304 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2305 CTLTYPE_INT, "iss_hash", 2306 SYSCTL_DESCR("Enable RFC 1948 ISS by cryptographic " 2307 "hash computation"), 2308 NULL, 0, &tcp_do_rfc1948, sizeof(tcp_do_rfc1948), 2309 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, 2310 CTL_EOL); 2311 2312 /* ABC subtree */ 2313 2314 sysctl_createv(clog, 0, NULL, &abc_node, 2315 CTLFLAG_PERMANENT, CTLTYPE_NODE, "abc", 2316 SYSCTL_DESCR("RFC3465 Appropriate Byte Counting (ABC)"), 2317 NULL, 0, NULL, 0, 2318 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2319 sysctl_createv(clog, 0, &abc_node, NULL, 2320 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2321 CTLTYPE_INT, "enable", 2322 SYSCTL_DESCR("Enable RFC3465 Appropriate Byte Counting"), 2323 NULL, 0, &tcp_do_abc, 0, CTL_CREATE, CTL_EOL); 2324 sysctl_createv(clog, 0, &abc_node, NULL, 2325 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2326 CTLTYPE_INT, "aggressive", 2327 SYSCTL_DESCR("1: L=2*SMSS 0: L=1*SMSS"), 2328 NULL, 0, &tcp_abc_aggressive, 0, CTL_CREATE, CTL_EOL); 2329 2330 /* MSL tuning subtree */ 2331 2332 sysctl_createv(clog, 0, NULL, &mslt_node, 2333 CTLFLAG_PERMANENT, CTLTYPE_NODE, "mslt", 2334 SYSCTL_DESCR("MSL Tuning for TIME_WAIT truncation"), 2335 NULL, 0, NULL, 0, 2336 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2337 sysctl_createv(clog, 0, &mslt_node, NULL, 2338 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2339 CTLTYPE_INT, "enable", 2340 SYSCTL_DESCR("Enable TIME_WAIT truncation"), 2341 NULL, 0, &tcp_msl_enable, 0, CTL_CREATE, CTL_EOL); 2342 sysctl_createv(clog, 0, &mslt_node, NULL, 2343 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2344 CTLTYPE_INT, "loopback", 2345 SYSCTL_DESCR("MSL value to use for loopback connections"), 2346 NULL, 0, &tcp_msl_loop, 0, CTL_CREATE, CTL_EOL); 2347 sysctl_createv(clog, 0, &mslt_node, NULL, 2348 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2349 CTLTYPE_INT, "local", 2350 SYSCTL_DESCR("MSL value to use for local connections"), 2351 NULL, 0, &tcp_msl_local, 0, CTL_CREATE, CTL_EOL); 2352 sysctl_createv(clog, 0, &mslt_node, NULL, 2353 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2354 CTLTYPE_INT, "remote", 2355 SYSCTL_DESCR("MSL value to use for remote connections"), 2356 NULL, 0, &tcp_msl_remote, 0, CTL_CREATE, CTL_EOL); 2357 sysctl_createv(clog, 0, &mslt_node, NULL, 2358 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2359 CTLTYPE_INT, "remote_threshold", 2360 SYSCTL_DESCR("RTT estimate value to promote local to remote"), 2361 NULL, 0, &tcp_msl_remote_threshold, 0, CTL_CREATE, CTL_EOL); 2362 2363 /* vestigial TIME_WAIT tuning subtree */ 2364 2365 sysctl_createv(clog, 0, NULL, &vtw_node, 2366 CTLFLAG_PERMANENT, CTLTYPE_NODE, "vtw", 2367 SYSCTL_DESCR("Tuning for Vestigial TIME_WAIT"), 2368 NULL, 0, NULL, 0, 2369 CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); 2370 sysctl_createv(clog, 0, &vtw_node, NULL, 2371 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, 2372 CTLTYPE_INT, "enable", 2373 SYSCTL_DESCR("Enable Vestigial TIME_WAIT"), 2374 sysctl_tcp_vtw_enable, 0, 2375 (pf == AF_INET) ? &tcp4_vtw_enable : &tcp6_vtw_enable, 2376 0, CTL_CREATE, CTL_EOL); 2377 sysctl_createv(clog, 0, &vtw_node, NULL, 2378 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 2379 CTLTYPE_INT, "entries", 2380 SYSCTL_DESCR("Maximum number of vestigial TIME_WAIT entries"), 2381 NULL, 0, &tcp_vtw_entries, 0, CTL_CREATE, CTL_EOL); 2382 } 2383 2384 void 2385 tcp_usrreq_init(void) 2386 { 2387 2388 #ifdef INET 2389 sysctl_net_inet_tcp_setup2(NULL, PF_INET, "inet", "tcp"); 2390 #endif 2391 #ifdef INET6 2392 sysctl_net_inet_tcp_setup2(NULL, PF_INET6, "inet6", "tcp6"); 2393 #endif 2394 } 2395 2396 PR_WRAP_USRREQS(tcp) 2397 #define tcp_attach tcp_attach_wrapper 2398 #define tcp_detach tcp_detach_wrapper 2399 #define tcp_accept tcp_accept_wrapper 2400 #define tcp_bind tcp_bind_wrapper 2401 #define tcp_listen tcp_listen_wrapper 2402 #define tcp_connect tcp_connect_wrapper 2403 #define tcp_disconnect tcp_disconnect_wrapper 2404 #define tcp_shutdown tcp_shutdown_wrapper 2405 #define tcp_abort tcp_abort_wrapper 2406 #define tcp_ioctl tcp_ioctl_wrapper 2407 #define tcp_stat tcp_stat_wrapper 2408 #define tcp_peeraddr tcp_peeraddr_wrapper 2409 #define tcp_sockaddr tcp_sockaddr_wrapper 2410 #define tcp_recvoob tcp_recvoob_wrapper 2411 #define tcp_sendoob tcp_sendoob_wrapper 2412 #define tcp_usrreq tcp_usrreq_wrapper 2413 2414 const struct pr_usrreqs tcp_usrreqs = { 2415 .pr_attach = tcp_attach, 2416 .pr_detach = tcp_detach, 2417 .pr_accept = tcp_accept, 2418 .pr_bind = tcp_bind, 2419 .pr_listen = tcp_listen, 2420 .pr_connect = tcp_connect, 2421 .pr_disconnect = tcp_disconnect, 2422 .pr_shutdown = tcp_shutdown, 2423 .pr_abort = tcp_abort, 2424 .pr_ioctl = tcp_ioctl, 2425 .pr_stat = tcp_stat, 2426 .pr_peeraddr = tcp_peeraddr, 2427 .pr_sockaddr = tcp_sockaddr, 2428 .pr_recvoob = tcp_recvoob, 2429 .pr_sendoob = tcp_sendoob, 2430 .pr_generic = tcp_usrreq, 2431 }; 2432
Indexes created Sun Sep 21 20:09:37 GMT 2025