| 1 | /* $NetBSD: tcp_usrreq.c,v 1.213 2016/11/18 06:50:04 knakahara 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 1.213 2016/11/18 06:50:04 knakahara Exp $" ); |
| 103 | |
| 104 | #ifdef _KERNEL_OPT |
| 105 | #include "opt_inet.h" |
| 106 | #include "opt_tcp_debug.h" |
| 107 | #include "opt_mbuftrace.h" |
| 108 | #include "opt_tcp_space.h" |
| 109 | #include "opt_net_mpsafe.h" |
| 110 | #endif |
| 111 | |
| 112 | #include <sys/param.h> |
| 113 | #include <sys/systm.h> |
| 114 | #include <sys/kernel.h> |
| 115 | #include <sys/mbuf.h> |
| 116 | #include <sys/socket.h> |
| 117 | #include <sys/socketvar.h> |
| 118 | #include <sys/protosw.h> |
| 119 | #include <sys/errno.h> |
| 120 | #include <sys/stat.h> |
| 121 | #include <sys/proc.h> |
| 122 | #include <sys/domain.h> |
| 123 | #include <sys/sysctl.h> |
| 124 | #include <sys/kauth.h> |
| 125 | #include <sys/kernel.h> |
| 126 | #include <sys/uidinfo.h> |
| 127 | |
| 128 | #include <net/if.h> |
| 129 | |
| 130 | #include <netinet/in.h> |
| 131 | #include <netinet/in_systm.h> |
| 132 | #include <netinet/in_var.h> |
| 133 | #include <netinet/ip.h> |
| 134 | #include <netinet/in_pcb.h> |
| 135 | #include <netinet/ip_var.h> |
| 136 | #include <netinet/in_offload.h> |
| 137 | |
| 138 | #ifdef INET6 |
| 139 | #ifndef INET |
| 140 | #include <netinet/in.h> |
| 141 | #endif |
| 142 | #include <netinet/ip6.h> |
| 143 | #include <netinet6/in6_pcb.h> |
| 144 | #include <netinet6/ip6_var.h> |
| 145 | #include <netinet6/scope6_var.h> |
| 146 | #endif |
| 147 | |
| 148 | #include <netinet/tcp.h> |
| 149 | #include <netinet/tcp_fsm.h> |
| 150 | #include <netinet/tcp_seq.h> |
| 151 | #include <netinet/tcp_timer.h> |
| 152 | #include <netinet/tcp_var.h> |
| 153 | #include <netinet/tcp_private.h> |
| 154 | #include <netinet/tcp_congctl.h> |
| 155 | #include <netinet/tcpip.h> |
| 156 | #include <netinet/tcp_debug.h> |
| 157 | #include <netinet/tcp_vtw.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 | KASSERT(solocked(so)); |
| 186 | |
| 187 | /* |
| 188 | * When a TCP is attached to a socket, then there will be |
| 189 | * a (struct inpcb) pointed at by the socket, and this |
| 190 | * structure will point at a subsidary (struct tcpcb). |
| 191 | */ |
| 192 | switch (so->so_proto->pr_domain->dom_family) { |
| 193 | #ifdef INET |
| 194 | case PF_INET: |
| 195 | *inp = sotoinpcb(so); |
| 196 | if (*inp == NULL) |
| 197 | return EINVAL; |
| 198 | *tp = intotcpcb(*inp); |
| 199 | break; |
| 200 | #endif |
| 201 | #ifdef INET6 |
| 202 | case PF_INET6: |
| 203 | *in6p = sotoin6pcb(so); |
| 204 | if (*in6p == NULL) |
| 205 | return EINVAL; |
| 206 | *tp = in6totcpcb(*in6p); |
| 207 | break; |
| 208 | #endif |
| 209 | default: |
| 210 | return EAFNOSUPPORT; |
| 211 | } |
| 212 | |
| 213 | KASSERT(tp != NULL); |
| 214 | |
| 215 | return 0; |
| 216 | } |
| 217 | |
| 218 | static void |
| 219 | change_keepalive(struct socket *so, struct tcpcb *tp) |
| 220 | { |
| 221 | tp->t_maxidle = tp->t_keepcnt * tp->t_keepintvl; |
| 222 | TCP_TIMER_DISARM(tp, TCPT_KEEP); |
| 223 | TCP_TIMER_DISARM(tp, TCPT_2MSL); |
| 224 | |
| 225 | if (tp->t_state == TCPS_SYN_RECEIVED || |
| 226 | tp->t_state == TCPS_SYN_SENT) { |
| 227 | TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepinit); |
| 228 | } else if (so->so_options & SO_KEEPALIVE && |
| 229 | tp->t_state <= TCPS_CLOSE_WAIT) { |
| 230 | TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepintvl); |
| 231 | } else { |
| 232 | TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepidle); |
| 233 | } |
| 234 | |
| 235 | if ((tp->t_state == TCPS_FIN_WAIT_2) && (tp->t_maxidle > 0)) |
| 236 | TCP_TIMER_ARM(tp, TCPT_2MSL, tp->t_maxidle); |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * Export TCP internal state information via a struct tcp_info, based on the |
| 241 | * Linux 2.6 API. Not ABI compatible as our constants are mapped differently |
| 242 | * (TCP state machine, etc). We export all information using FreeBSD-native |
| 243 | * constants -- for example, the numeric values for tcpi_state will differ |
| 244 | * from Linux. |
| 245 | */ |
| 246 | static void |
| 247 | tcp_fill_info(struct tcpcb *tp, struct tcp_info *ti) |
| 248 | { |
| 249 | |
| 250 | bzero(ti, sizeof(*ti)); |
| 251 | |
| 252 | ti->tcpi_state = tp->t_state; |
| 253 | if ((tp->t_flags & TF_REQ_TSTMP) && (tp->t_flags & TF_RCVD_TSTMP)) |
| 254 | ti->tcpi_options |= TCPI_OPT_TIMESTAMPS; |
| 255 | if (tp->t_flags & TF_SACK_PERMIT) |
| 256 | ti->tcpi_options |= TCPI_OPT_SACK; |
| 257 | if ((tp->t_flags & TF_REQ_SCALE) && (tp->t_flags & TF_RCVD_SCALE)) { |
| 258 | ti->tcpi_options |= TCPI_OPT_WSCALE; |
| 259 | ti->tcpi_snd_wscale = tp->snd_scale; |
| 260 | ti->tcpi_rcv_wscale = tp->rcv_scale; |
| 261 | } |
| 262 | if (tp->t_flags & TF_ECN_PERMIT) { |
| 263 | ti->tcpi_options |= TCPI_OPT_ECN; |
| 264 | } |
| 265 | |
| 266 | ti->tcpi_rto = tp->t_rxtcur * tick; |
| 267 | ti->tcpi_last_data_recv = (long)(hardclock_ticks - |
| 268 | (int)tp->t_rcvtime) * tick; |
| 269 | ti->tcpi_rtt = ((u_int64_t)tp->t_srtt * tick) >> TCP_RTT_SHIFT; |
| 270 | ti->tcpi_rttvar = ((u_int64_t)tp->t_rttvar * tick) >> TCP_RTTVAR_SHIFT; |
| 271 | |
| 272 | ti->tcpi_snd_ssthresh = tp->snd_ssthresh; |
| 273 | /* Linux API wants these in # of segments, apparently */ |
| 274 | ti->tcpi_snd_cwnd = tp->snd_cwnd / tp->t_segsz; |
| 275 | ti->tcpi_snd_wnd = tp->snd_wnd / tp->t_segsz; |
| 276 | |
| 277 | /* |
| 278 | * FreeBSD-specific extension fields for tcp_info. |
| 279 | */ |
| 280 | ti->tcpi_rcv_space = tp->rcv_wnd; |
| 281 | ti->tcpi_rcv_nxt = tp->rcv_nxt; |
| 282 | ti->tcpi_snd_bwnd = 0; /* Unused, kept for compat. */ |
| 283 | ti->tcpi_snd_nxt = tp->snd_nxt; |
| 284 | ti->tcpi_snd_mss = tp->t_segsz; |
| 285 | ti->tcpi_rcv_mss = tp->t_segsz; |
| 286 | #ifdef TF_TOE |
| 287 | if (tp->t_flags & TF_TOE) |
| 288 | ti->tcpi_options |= TCPI_OPT_TOE; |
| 289 | #endif |
| 290 | /* From the redundant department of redundancies... */ |
| 291 | ti->__tcpi_retransmits = ti->__tcpi_retrans = |
| 292 | ti->tcpi_snd_rexmitpack = tp->t_sndrexmitpack; |
| 293 | |
| 294 | ti->tcpi_rcv_ooopack = tp->t_rcvoopack; |
| 295 | ti->tcpi_snd_zerowin = tp->t_sndzerowin; |
| 296 | } |
| 297 | |
| 298 | int |
| 299 | tcp_ctloutput(int op, struct socket *so, struct sockopt *sopt) |
| 300 | { |
| 301 | int error = 0, s; |
| 302 | struct inpcb *inp; |
| 303 | #ifdef INET6 |
| 304 | struct in6pcb *in6p; |
| 305 | #endif |
| 306 | struct tcpcb *tp; |
| 307 | struct tcp_info ti; |
| 308 | u_int ui; |
| 309 | int family; /* family of the socket */ |
| 310 | int level, optname, optval; |
| 311 | |
| 312 | level = sopt->sopt_level; |
| 313 | optname = sopt->sopt_name; |
| 314 | |
| 315 | family = so->so_proto->pr_domain->dom_family; |
| 316 | |
| 317 | s = splsoftnet(); |
| 318 | switch (family) { |
| 319 | #ifdef INET |
| 320 | case PF_INET: |
| 321 | inp = sotoinpcb(so); |
| 322 | #ifdef INET6 |
| 323 | in6p = NULL; |
| 324 | #endif |
| 325 | break; |
| 326 | #endif |
| 327 | #ifdef INET6 |
| 328 | case PF_INET6: |
| 329 | inp = NULL; |
| 330 | in6p = sotoin6pcb(so); |
| 331 | break; |
| 332 | #endif |
| 333 | default: |
| 334 | splx(s); |
| 335 | panic("%s: af %d" , __func__, family); |
| 336 | } |
| 337 | #ifndef INET6 |
| 338 | if (inp == NULL) |
| 339 | #else |
| 340 | if (inp == NULL && in6p == NULL) |
| 341 | #endif |
| 342 | { |
| 343 | splx(s); |
| 344 | return (ECONNRESET); |
| 345 | } |
| 346 | if (level != IPPROTO_TCP) { |
| 347 | switch (family) { |
| 348 | #ifdef INET |
| 349 | case PF_INET: |
| 350 | error = ip_ctloutput(op, so, sopt); |
| 351 | break; |
| 352 | #endif |
| 353 | #ifdef INET6 |
| 354 | case PF_INET6: |
| 355 | error = ip6_ctloutput(op, so, sopt); |
| 356 | break; |
| 357 | #endif |
| 358 | } |
| 359 | splx(s); |
| 360 | return (error); |
| 361 | } |
| 362 | if (inp) |
| 363 | tp = intotcpcb(inp); |
| 364 | #ifdef INET6 |
| 365 | else if (in6p) |
| 366 | tp = in6totcpcb(in6p); |
| 367 | #endif |
| 368 | else |
| 369 | tp = NULL; |
| 370 | |
| 371 | switch (op) { |
| 372 | case PRCO_SETOPT: |
| 373 | switch (optname) { |
| 374 | #ifdef TCP_SIGNATURE |
| 375 | case TCP_MD5SIG: |
| 376 | error = sockopt_getint(sopt, &optval); |
| 377 | if (error) |
| 378 | break; |
| 379 | if (optval > 0) |
| 380 | tp->t_flags |= TF_SIGNATURE; |
| 381 | else |
| 382 | tp->t_flags &= ~TF_SIGNATURE; |
| 383 | break; |
| 384 | #endif /* TCP_SIGNATURE */ |
| 385 | |
| 386 | case TCP_NODELAY: |
| 387 | error = sockopt_getint(sopt, &optval); |
| 388 | if (error) |
| 389 | break; |
| 390 | if (optval) |
| 391 | tp->t_flags |= TF_NODELAY; |
| 392 | else |
| 393 | tp->t_flags &= ~TF_NODELAY; |
| 394 | break; |
| 395 | |
| 396 | case TCP_MAXSEG: |
| 397 | error = sockopt_getint(sopt, &optval); |
| 398 | if (error) |
| 399 | break; |
| 400 | if (optval > 0 && optval <= tp->t_peermss) |
| 401 | tp->t_peermss = optval; /* limit on send size */ |
| 402 | else |
| 403 | error = EINVAL; |
| 404 | break; |
| 405 | #ifdef notyet |
| 406 | case TCP_CONGCTL: |
| 407 | /* XXX string overflow XXX */ |
| 408 | error = tcp_congctl_select(tp, sopt->sopt_data); |
| 409 | break; |
| 410 | #endif |
| 411 | |
| 412 | case TCP_KEEPIDLE: |
| 413 | error = sockopt_get(sopt, &ui, sizeof(ui)); |
| 414 | if (error) |
| 415 | break; |
| 416 | if (ui > 0) { |
| 417 | tp->t_keepidle = ui; |
| 418 | change_keepalive(so, tp); |
| 419 | } else |
| 420 | error = EINVAL; |
| 421 | break; |
| 422 | |
| 423 | case TCP_KEEPINTVL: |
| 424 | error = sockopt_get(sopt, &ui, sizeof(ui)); |
| 425 | if (error) |
| 426 | break; |
| 427 | if (ui > 0) { |
| 428 | tp->t_keepintvl = ui; |
| 429 | change_keepalive(so, tp); |
| 430 | } else |
| 431 | error = EINVAL; |
| 432 | break; |
| 433 | |
| 434 | case TCP_KEEPCNT: |
| 435 | error = sockopt_get(sopt, &ui, sizeof(ui)); |
| 436 | if (error) |
| 437 | break; |
| 438 | if (ui > 0) { |
| 439 | tp->t_keepcnt = ui; |
| 440 | change_keepalive(so, tp); |
| 441 | } else |
| 442 | error = EINVAL; |
| 443 | break; |
| 444 | |
| 445 | case TCP_KEEPINIT: |
| 446 | error = sockopt_get(sopt, &ui, sizeof(ui)); |
| 447 | if (error) |
| 448 | break; |
| 449 | if (ui > 0) { |
| 450 | tp->t_keepinit = ui; |
| 451 | change_keepalive(so, tp); |
| 452 | } else |
| 453 | error = EINVAL; |
| 454 | break; |
| 455 | |
| 456 | default: |
| 457 | error = ENOPROTOOPT; |
| 458 | break; |
| 459 | } |
| 460 | break; |
| 461 | |
| 462 | case PRCO_GETOPT: |
| 463 | switch (optname) { |
| 464 | #ifdef TCP_SIGNATURE |
| 465 | case TCP_MD5SIG: |
| 466 | optval = (tp->t_flags & TF_SIGNATURE) ? 1 : 0; |
| 467 | error = sockopt_set(sopt, &optval, sizeof(optval)); |
| 468 | break; |
| 469 | #endif |
| 470 | case TCP_NODELAY: |
| 471 | optval = tp->t_flags & TF_NODELAY; |
| 472 | error = sockopt_set(sopt, &optval, sizeof(optval)); |
| 473 | break; |
| 474 | case TCP_MAXSEG: |
| 475 | optval = tp->t_peermss; |
| 476 | error = sockopt_set(sopt, &optval, sizeof(optval)); |
| 477 | break; |
| 478 | case TCP_INFO: |
| 479 | tcp_fill_info(tp, &ti); |
| 480 | error = sockopt_set(sopt, &ti, sizeof ti); |
| 481 | break; |
| 482 | #ifdef notyet |
| 483 | case TCP_CONGCTL: |
| 484 | break; |
| 485 | #endif |
| 486 | default: |
| 487 | error = ENOPROTOOPT; |
| 488 | break; |
| 489 | } |
| 490 | break; |
| 491 | } |
| 492 | splx(s); |
| 493 | return (error); |
| 494 | } |
| 495 | |
| 496 | #ifndef TCP_SENDSPACE |
| 497 | #define TCP_SENDSPACE 1024*32 |
| 498 | #endif |
| 499 | int tcp_sendspace = TCP_SENDSPACE; |
| 500 | #ifndef TCP_RECVSPACE |
| 501 | #define TCP_RECVSPACE 1024*32 |
| 502 | #endif |
| 503 | int tcp_recvspace = TCP_RECVSPACE; |
| 504 | |
| 505 | /* |
| 506 | * tcp_attach: attach TCP protocol to socket, allocating internet protocol |
| 507 | * control block, TCP control block, buffer space and entering LISTEN state |
| 508 | * if to accept connections. |
| 509 | */ |
| 510 | static int |
| 511 | tcp_attach(struct socket *so, int proto) |
| 512 | { |
| 513 | struct tcpcb *tp; |
| 514 | struct inpcb *inp; |
| 515 | #ifdef INET6 |
| 516 | struct in6pcb *in6p; |
| 517 | #endif |
| 518 | int s, error, family; |
| 519 | |
| 520 | /* Assign the lock (must happen even if we will error out). */ |
| 521 | s = splsoftnet(); |
| 522 | sosetlock(so); |
| 523 | KASSERT(solocked(so)); |
| 524 | |
| 525 | family = so->so_proto->pr_domain->dom_family; |
| 526 | switch (family) { |
| 527 | #ifdef INET |
| 528 | case PF_INET: |
| 529 | inp = sotoinpcb(so); |
| 530 | #ifdef INET6 |
| 531 | in6p = NULL; |
| 532 | #endif |
| 533 | break; |
| 534 | #endif |
| 535 | #ifdef INET6 |
| 536 | case PF_INET6: |
| 537 | inp = NULL; |
| 538 | in6p = sotoin6pcb(so); |
| 539 | break; |
| 540 | #endif |
| 541 | default: |
| 542 | error = EAFNOSUPPORT; |
| 543 | goto out; |
| 544 | } |
| 545 | |
| 546 | KASSERT(inp == NULL); |
| 547 | #ifdef INET6 |
| 548 | KASSERT(in6p == NULL); |
| 549 | #endif |
| 550 | |
| 551 | #ifdef MBUFTRACE |
| 552 | so->so_mowner = &tcp_sock_mowner; |
| 553 | so->so_rcv.sb_mowner = &tcp_sock_rx_mowner; |
| 554 | so->so_snd.sb_mowner = &tcp_sock_tx_mowner; |
| 555 | #endif |
| 556 | if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { |
| 557 | error = soreserve(so, tcp_sendspace, tcp_recvspace); |
| 558 | if (error) |
| 559 | goto out; |
| 560 | } |
| 561 | |
| 562 | so->so_rcv.sb_flags |= SB_AUTOSIZE; |
| 563 | so->so_snd.sb_flags |= SB_AUTOSIZE; |
| 564 | |
| 565 | switch (family) { |
| 566 | #ifdef INET |
| 567 | case PF_INET: |
| 568 | error = in_pcballoc(so, &tcbtable); |
| 569 | if (error) |
| 570 | goto out; |
| 571 | inp = sotoinpcb(so); |
| 572 | #ifdef INET6 |
| 573 | in6p = NULL; |
| 574 | #endif |
| 575 | break; |
| 576 | #endif |
| 577 | #ifdef INET6 |
| 578 | case PF_INET6: |
| 579 | error = in6_pcballoc(so, &tcbtable); |
| 580 | if (error) |
| 581 | goto out; |
| 582 | inp = NULL; |
| 583 | in6p = sotoin6pcb(so); |
| 584 | break; |
| 585 | #endif |
| 586 | default: |
| 587 | error = EAFNOSUPPORT; |
| 588 | goto out; |
| 589 | } |
| 590 | if (inp) |
| 591 | tp = tcp_newtcpcb(family, (void *)inp); |
| 592 | #ifdef INET6 |
| 593 | else if (in6p) |
| 594 | tp = tcp_newtcpcb(family, (void *)in6p); |
| 595 | #endif |
| 596 | else |
| 597 | tp = NULL; |
| 598 | |
| 599 | if (tp == NULL) { |
| 600 | int nofd = so->so_state & SS_NOFDREF; /* XXX */ |
| 601 | |
| 602 | so->so_state &= ~SS_NOFDREF; /* don't free the socket yet */ |
| 603 | #ifdef INET |
| 604 | if (inp) |
| 605 | in_pcbdetach(inp); |
| 606 | #endif |
| 607 | #ifdef INET6 |
| 608 | if (in6p) |
| 609 | in6_pcbdetach(in6p); |
| 610 | #endif |
| 611 | so->so_state |= nofd; |
| 612 | error = ENOBUFS; |
| 613 | goto out; |
| 614 | } |
| 615 | tp->t_state = TCPS_CLOSED; |
| 616 | if ((so->so_options & SO_LINGER) && so->so_linger == 0) { |
| 617 | so->so_linger = TCP_LINGERTIME; |
| 618 | } |
| 619 | out: |
| 620 | KASSERT(solocked(so)); |
| 621 | splx(s); |
| 622 | return error; |
| 623 | } |
| 624 | |
| 625 | static void |
| 626 | tcp_detach(struct socket *so) |
| 627 | { |
| 628 | struct inpcb *inp = NULL; |
| 629 | struct in6pcb *in6p = NULL; |
| 630 | struct tcpcb *tp = NULL; |
| 631 | int s; |
| 632 | |
| 633 | if (tcp_getpcb(so, &inp, &in6p, &tp) != 0) |
| 634 | return; |
| 635 | |
| 636 | s = splsoftnet(); |
| 637 | (void)tcp_disconnect1(tp); |
| 638 | splx(s); |
| 639 | } |
| 640 | |
| 641 | static int |
| 642 | tcp_accept(struct socket *so, struct sockaddr *nam) |
| 643 | { |
| 644 | struct inpcb *inp = NULL; |
| 645 | struct in6pcb *in6p = NULL; |
| 646 | struct tcpcb *tp = NULL; |
| 647 | int ostate = 0; |
| 648 | int error = 0; |
| 649 | int s; |
| 650 | |
| 651 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 652 | return error; |
| 653 | |
| 654 | ostate = tcp_debug_capture(tp, PRU_ACCEPT); |
| 655 | |
| 656 | /* |
| 657 | * Accept a connection. Essentially all the work is |
| 658 | * done at higher levels; just return the address |
| 659 | * of the peer, storing through addr. |
| 660 | */ |
| 661 | s = splsoftnet(); |
| 662 | #ifdef INET |
| 663 | if (inp) { |
| 664 | in_setpeeraddr(inp, (struct sockaddr_in *)nam); |
| 665 | } |
| 666 | #endif |
| 667 | #ifdef INET6 |
| 668 | if (in6p) { |
| 669 | in6_setpeeraddr(in6p, (struct sockaddr_in6 *)nam); |
| 670 | } |
| 671 | #endif |
| 672 | tcp_debug_trace(so, tp, ostate, PRU_ACCEPT); |
| 673 | splx(s); |
| 674 | |
| 675 | return 0; |
| 676 | } |
| 677 | |
| 678 | static int |
| 679 | tcp_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) |
| 680 | { |
| 681 | struct inpcb *inp = NULL; |
| 682 | struct in6pcb *in6p = NULL; |
| 683 | struct sockaddr_in *sin = (struct sockaddr_in *)nam; |
| 684 | #ifdef INET6 |
| 685 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; |
| 686 | #endif /* INET6 */ |
| 687 | struct tcpcb *tp = NULL; |
| 688 | int s; |
| 689 | int error = 0; |
| 690 | int ostate = 0; |
| 691 | |
| 692 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 693 | return error; |
| 694 | |
| 695 | ostate = tcp_debug_capture(tp, PRU_BIND); |
| 696 | |
| 697 | /* |
| 698 | * Give the socket an address. |
| 699 | */ |
| 700 | s = splsoftnet(); |
| 701 | switch (so->so_proto->pr_domain->dom_family) { |
| 702 | #ifdef INET |
| 703 | case PF_INET: |
| 704 | error = in_pcbbind(inp, sin, l); |
| 705 | break; |
| 706 | #endif |
| 707 | #ifdef INET6 |
| 708 | case PF_INET6: |
| 709 | error = in6_pcbbind(in6p, sin6, l); |
| 710 | if (!error) { |
| 711 | /* mapped addr case */ |
| 712 | if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_laddr)) |
| 713 | tp->t_family = AF_INET; |
| 714 | else |
| 715 | tp->t_family = AF_INET6; |
| 716 | } |
| 717 | break; |
| 718 | #endif |
| 719 | } |
| 720 | tcp_debug_trace(so, tp, ostate, PRU_BIND); |
| 721 | splx(s); |
| 722 | |
| 723 | return error; |
| 724 | } |
| 725 | |
| 726 | static int |
| 727 | tcp_listen(struct socket *so, struct lwp *l) |
| 728 | { |
| 729 | struct inpcb *inp = NULL; |
| 730 | struct in6pcb *in6p = NULL; |
| 731 | struct tcpcb *tp = NULL; |
| 732 | int error = 0; |
| 733 | int ostate = 0; |
| 734 | int s; |
| 735 | |
| 736 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 737 | return error; |
| 738 | |
| 739 | ostate = tcp_debug_capture(tp, PRU_LISTEN); |
| 740 | |
| 741 | /* |
| 742 | * Prepare to accept connections. |
| 743 | */ |
| 744 | s = splsoftnet(); |
| 745 | #ifdef INET |
| 746 | if (inp && inp->inp_lport == 0) { |
| 747 | error = in_pcbbind(inp, NULL, l); |
| 748 | if (error) |
| 749 | goto release; |
| 750 | } |
| 751 | #endif |
| 752 | #ifdef INET6 |
| 753 | if (in6p && in6p->in6p_lport == 0) { |
| 754 | error = in6_pcbbind(in6p, NULL, l); |
| 755 | if (error) |
| 756 | goto release; |
| 757 | } |
| 758 | #endif |
| 759 | tp->t_state = TCPS_LISTEN; |
| 760 | |
| 761 | release: |
| 762 | tcp_debug_trace(so, tp, ostate, PRU_LISTEN); |
| 763 | splx(s); |
| 764 | |
| 765 | return error; |
| 766 | } |
| 767 | |
| 768 | static int |
| 769 | tcp_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) |
| 770 | { |
| 771 | struct inpcb *inp = NULL; |
| 772 | struct in6pcb *in6p = NULL; |
| 773 | struct tcpcb *tp = NULL; |
| 774 | int s; |
| 775 | int error = 0; |
| 776 | int ostate = 0; |
| 777 | |
| 778 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 779 | return error; |
| 780 | |
| 781 | ostate = tcp_debug_capture(tp, PRU_CONNECT); |
| 782 | |
| 783 | /* |
| 784 | * Initiate connection to peer. |
| 785 | * Create a template for use in transmissions on this connection. |
| 786 | * Enter SYN_SENT state, and mark socket as connecting. |
| 787 | * Start keep-alive timer, and seed output sequence space. |
| 788 | * Send initial segment on connection. |
| 789 | */ |
| 790 | s = splsoftnet(); |
| 791 | #ifdef INET |
| 792 | if (inp) { |
| 793 | if (inp->inp_lport == 0) { |
| 794 | error = in_pcbbind(inp, NULL, l); |
| 795 | if (error) |
| 796 | goto release; |
| 797 | } |
| 798 | error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); |
| 799 | } |
| 800 | #endif |
| 801 | #ifdef INET6 |
| 802 | if (in6p) { |
| 803 | if (in6p->in6p_lport == 0) { |
| 804 | error = in6_pcbbind(in6p, NULL, l); |
| 805 | if (error) |
| 806 | goto release; |
| 807 | } |
| 808 | error = in6_pcbconnect(in6p, (struct sockaddr_in6 *)nam, l); |
| 809 | if (!error) { |
| 810 | /* mapped addr case */ |
| 811 | if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_faddr)) |
| 812 | tp->t_family = AF_INET; |
| 813 | else |
| 814 | tp->t_family = AF_INET6; |
| 815 | } |
| 816 | } |
| 817 | #endif |
| 818 | if (error) |
| 819 | goto release; |
| 820 | tp->t_template = tcp_template(tp); |
| 821 | if (tp->t_template == 0) { |
| 822 | #ifdef INET |
| 823 | if (inp) |
| 824 | in_pcbdisconnect(inp); |
| 825 | #endif |
| 826 | #ifdef INET6 |
| 827 | if (in6p) |
| 828 | in6_pcbdisconnect(in6p); |
| 829 | #endif |
| 830 | error = ENOBUFS; |
| 831 | goto release; |
| 832 | } |
| 833 | /* |
| 834 | * Compute window scaling to request. |
| 835 | * XXX: This should be moved to tcp_output(). |
| 836 | */ |
| 837 | while (tp->request_r_scale < TCP_MAX_WINSHIFT && |
| 838 | (TCP_MAXWIN << tp->request_r_scale) < sb_max) |
| 839 | tp->request_r_scale++; |
| 840 | soisconnecting(so); |
| 841 | TCP_STATINC(TCP_STAT_CONNATTEMPT); |
| 842 | tp->t_state = TCPS_SYN_SENT; |
| 843 | TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepinit); |
| 844 | tp->iss = tcp_new_iss(tp, 0); |
| 845 | tcp_sendseqinit(tp); |
| 846 | error = tcp_output(tp); |
| 847 | |
| 848 | release: |
| 849 | tcp_debug_trace(so, tp, ostate, PRU_CONNECT); |
| 850 | splx(s); |
| 851 | |
| 852 | return error; |
| 853 | } |
| 854 | |
| 855 | static int |
| 856 | tcp_connect2(struct socket *so, struct socket *so2) |
| 857 | { |
| 858 | struct inpcb *inp = NULL; |
| 859 | struct in6pcb *in6p = NULL; |
| 860 | struct tcpcb *tp = NULL; |
| 861 | int error = 0; |
| 862 | int ostate = 0; |
| 863 | |
| 864 | KASSERT(solocked(so)); |
| 865 | |
| 866 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 867 | return error; |
| 868 | |
| 869 | ostate = tcp_debug_capture(tp, PRU_CONNECT2); |
| 870 | |
| 871 | tcp_debug_trace(so, tp, ostate, PRU_CONNECT2); |
| 872 | |
| 873 | return EOPNOTSUPP; |
| 874 | } |
| 875 | |
| 876 | static int |
| 877 | tcp_disconnect(struct socket *so) |
| 878 | { |
| 879 | struct inpcb *inp = NULL; |
| 880 | struct in6pcb *in6p = NULL; |
| 881 | struct tcpcb *tp = NULL; |
| 882 | int error = 0; |
| 883 | int ostate = 0; |
| 884 | int s; |
| 885 | |
| 886 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 887 | return error; |
| 888 | |
| 889 | ostate = tcp_debug_capture(tp, PRU_DISCONNECT); |
| 890 | |
| 891 | /* |
| 892 | * Initiate disconnect from peer. |
| 893 | * If connection never passed embryonic stage, just drop; |
| 894 | * else if don't need to let data drain, then can just drop anyways, |
| 895 | * else have to begin TCP shutdown process: mark socket disconnecting, |
| 896 | * drain unread data, state switch to reflect user close, and |
| 897 | * send segment (e.g. FIN) to peer. Socket will be really disconnected |
| 898 | * when peer sends FIN and acks ours. |
| 899 | * |
| 900 | * SHOULD IMPLEMENT LATER PRU_CONNECT VIA REALLOC TCPCB. |
| 901 | */ |
| 902 | s = splsoftnet(); |
| 903 | tp = tcp_disconnect1(tp); |
| 904 | tcp_debug_trace(so, tp, ostate, PRU_DISCONNECT); |
| 905 | splx(s); |
| 906 | |
| 907 | return error; |
| 908 | } |
| 909 | |
| 910 | static int |
| 911 | tcp_shutdown(struct socket *so) |
| 912 | { |
| 913 | struct inpcb *inp = NULL; |
| 914 | struct in6pcb *in6p = NULL; |
| 915 | struct tcpcb *tp = NULL; |
| 916 | int error = 0; |
| 917 | int ostate = 0; |
| 918 | int s; |
| 919 | |
| 920 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 921 | return error; |
| 922 | |
| 923 | ostate = tcp_debug_capture(tp, PRU_SHUTDOWN); |
| 924 | /* |
| 925 | * Mark the connection as being incapable of further output. |
| 926 | */ |
| 927 | s = splsoftnet(); |
| 928 | socantsendmore(so); |
| 929 | tp = tcp_usrclosed(tp); |
| 930 | if (tp) |
| 931 | error = tcp_output(tp); |
| 932 | tcp_debug_trace(so, tp, ostate, PRU_SHUTDOWN); |
| 933 | splx(s); |
| 934 | |
| 935 | return error; |
| 936 | } |
| 937 | |
| 938 | static int |
| 939 | tcp_abort(struct socket *so) |
| 940 | { |
| 941 | struct inpcb *inp = NULL; |
| 942 | struct in6pcb *in6p = NULL; |
| 943 | struct tcpcb *tp = NULL; |
| 944 | int error = 0; |
| 945 | int ostate = 0; |
| 946 | int s; |
| 947 | |
| 948 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 949 | return error; |
| 950 | |
| 951 | ostate = tcp_debug_capture(tp, PRU_ABORT); |
| 952 | |
| 953 | /* |
| 954 | * Abort the TCP. |
| 955 | */ |
| 956 | s = splsoftnet(); |
| 957 | tp = tcp_drop(tp, ECONNABORTED); |
| 958 | tcp_debug_trace(so, tp, ostate, PRU_ABORT); |
| 959 | splx(s); |
| 960 | |
| 961 | return error; |
| 962 | } |
| 963 | |
| 964 | static int |
| 965 | tcp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) |
| 966 | { |
| 967 | switch (so->so_proto->pr_domain->dom_family) { |
| 968 | #ifdef INET |
| 969 | case PF_INET: |
| 970 | return in_control(so, cmd, nam, ifp); |
| 971 | #endif |
| 972 | #ifdef INET6 |
| 973 | case PF_INET6: |
| 974 | return in6_control(so, cmd, nam, ifp); |
| 975 | #endif |
| 976 | default: |
| 977 | return EAFNOSUPPORT; |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | static int |
| 982 | tcp_stat(struct socket *so, struct stat *ub) |
| 983 | { |
| 984 | KASSERT(solocked(so)); |
| 985 | |
| 986 | /* stat: don't bother with a blocksize. */ |
| 987 | return 0; |
| 988 | } |
| 989 | |
| 990 | static int |
| 991 | tcp_peeraddr(struct socket *so, struct sockaddr *nam) |
| 992 | { |
| 993 | struct inpcb *inp = NULL; |
| 994 | struct in6pcb *in6p = NULL; |
| 995 | struct tcpcb *tp = NULL; |
| 996 | int ostate = 0; |
| 997 | int error = 0; |
| 998 | int s; |
| 999 | |
| 1000 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 1001 | return error; |
| 1002 | |
| 1003 | ostate = tcp_debug_capture(tp, PRU_PEERADDR); |
| 1004 | |
| 1005 | s = splsoftnet(); |
| 1006 | #ifdef INET |
| 1007 | if (inp) { |
| 1008 | in_setpeeraddr(inp, (struct sockaddr_in *)nam); |
| 1009 | } |
| 1010 | #endif |
| 1011 | #ifdef INET6 |
| 1012 | if (in6p) { |
| 1013 | in6_setpeeraddr(in6p, (struct sockaddr_in6 *)nam); |
| 1014 | } |
| 1015 | #endif |
| 1016 | tcp_debug_trace(so, tp, ostate, PRU_PEERADDR); |
| 1017 | splx(s); |
| 1018 | |
| 1019 | return 0; |
| 1020 | } |
| 1021 | |
| 1022 | static int |
| 1023 | tcp_sockaddr(struct socket *so, struct sockaddr *nam) |
| 1024 | { |
| 1025 | struct inpcb *inp = NULL; |
| 1026 | struct in6pcb *in6p = NULL; |
| 1027 | struct tcpcb *tp = NULL; |
| 1028 | int ostate = 0; |
| 1029 | int error = 0; |
| 1030 | int s; |
| 1031 | |
| 1032 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 1033 | return error; |
| 1034 | |
| 1035 | ostate = tcp_debug_capture(tp, PRU_SOCKADDR); |
| 1036 | |
| 1037 | s = splsoftnet(); |
| 1038 | #ifdef INET |
| 1039 | if (inp) { |
| 1040 | in_setsockaddr(inp, (struct sockaddr_in *)nam); |
| 1041 | } |
| 1042 | #endif |
| 1043 | #ifdef INET6 |
| 1044 | if (in6p) { |
| 1045 | in6_setsockaddr(in6p, (struct sockaddr_in6 *)nam); |
| 1046 | } |
| 1047 | #endif |
| 1048 | tcp_debug_trace(so, tp, ostate, PRU_SOCKADDR); |
| 1049 | splx(s); |
| 1050 | |
| 1051 | return 0; |
| 1052 | } |
| 1053 | |
| 1054 | static int |
| 1055 | tcp_rcvd(struct socket *so, int flags, struct lwp *l) |
| 1056 | { |
| 1057 | struct inpcb *inp = NULL; |
| 1058 | struct in6pcb *in6p = NULL; |
| 1059 | struct tcpcb *tp = NULL; |
| 1060 | int ostate = 0; |
| 1061 | int error = 0; |
| 1062 | int s; |
| 1063 | |
| 1064 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 1065 | return error; |
| 1066 | |
| 1067 | ostate = tcp_debug_capture(tp, PRU_RCVD); |
| 1068 | |
| 1069 | /* |
| 1070 | * After a receive, possibly send window update to peer. |
| 1071 | * |
| 1072 | * soreceive() calls this function when a user receives |
| 1073 | * ancillary data on a listening socket. We don't call |
| 1074 | * tcp_output in such a case, since there is no header |
| 1075 | * template for a listening socket and hence the kernel |
| 1076 | * will panic. |
| 1077 | */ |
| 1078 | s = splsoftnet(); |
| 1079 | if ((so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) != 0) |
| 1080 | (void) tcp_output(tp); |
| 1081 | splx(s); |
| 1082 | |
| 1083 | tcp_debug_trace(so, tp, ostate, PRU_RCVD); |
| 1084 | |
| 1085 | return 0; |
| 1086 | } |
| 1087 | |
| 1088 | static int |
| 1089 | tcp_recvoob(struct socket *so, struct mbuf *m, int flags) |
| 1090 | { |
| 1091 | struct inpcb *inp = NULL; |
| 1092 | struct in6pcb *in6p = NULL; |
| 1093 | struct tcpcb *tp = NULL; |
| 1094 | int ostate = 0; |
| 1095 | int error = 0; |
| 1096 | int s; |
| 1097 | |
| 1098 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 1099 | return error; |
| 1100 | |
| 1101 | ostate = tcp_debug_capture(tp, PRU_RCVOOB); |
| 1102 | |
| 1103 | s = splsoftnet(); |
| 1104 | if ((so->so_oobmark == 0 && |
| 1105 | (so->so_state & SS_RCVATMARK) == 0) || |
| 1106 | so->so_options & SO_OOBINLINE || |
| 1107 | tp->t_oobflags & TCPOOB_HADDATA) { |
| 1108 | splx(s); |
| 1109 | return EINVAL; |
| 1110 | } |
| 1111 | |
| 1112 | if ((tp->t_oobflags & TCPOOB_HAVEDATA) == 0) { |
| 1113 | splx(s); |
| 1114 | return EWOULDBLOCK; |
| 1115 | } |
| 1116 | |
| 1117 | m->m_len = 1; |
| 1118 | *mtod(m, char *) = tp->t_iobc; |
| 1119 | if ((flags & MSG_PEEK) == 0) |
| 1120 | tp->t_oobflags ^= (TCPOOB_HAVEDATA | TCPOOB_HADDATA); |
| 1121 | |
| 1122 | tcp_debug_trace(so, tp, ostate, PRU_RCVOOB); |
| 1123 | splx(s); |
| 1124 | |
| 1125 | return 0; |
| 1126 | } |
| 1127 | |
| 1128 | static int |
| 1129 | tcp_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, |
| 1130 | struct mbuf *control, struct lwp *l) |
| 1131 | { |
| 1132 | struct inpcb *inp = NULL; |
| 1133 | struct in6pcb *in6p = NULL; |
| 1134 | struct tcpcb *tp = NULL; |
| 1135 | int ostate = 0; |
| 1136 | int error = 0; |
| 1137 | int s; |
| 1138 | |
| 1139 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 1140 | return error; |
| 1141 | |
| 1142 | ostate = tcp_debug_capture(tp, PRU_SEND); |
| 1143 | |
| 1144 | /* |
| 1145 | * Do a send by putting data in output queue and updating urgent |
| 1146 | * marker if URG set. Possibly send more data. |
| 1147 | */ |
| 1148 | s = splsoftnet(); |
| 1149 | if (control && control->m_len) { |
| 1150 | m_freem(control); |
| 1151 | m_freem(m); |
| 1152 | tcp_debug_trace(so, tp, ostate, PRU_SEND); |
| 1153 | splx(s); |
| 1154 | return EINVAL; |
| 1155 | } |
| 1156 | |
| 1157 | sbappendstream(&so->so_snd, m); |
| 1158 | error = tcp_output(tp); |
| 1159 | tcp_debug_trace(so, tp, ostate, PRU_SEND); |
| 1160 | splx(s); |
| 1161 | |
| 1162 | return error; |
| 1163 | } |
| 1164 | |
| 1165 | static int |
| 1166 | tcp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) |
| 1167 | { |
| 1168 | struct inpcb *inp = NULL; |
| 1169 | struct in6pcb *in6p = NULL; |
| 1170 | struct tcpcb *tp = NULL; |
| 1171 | int ostate = 0; |
| 1172 | int error = 0; |
| 1173 | int s; |
| 1174 | |
| 1175 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
| 1176 | return error; |
| 1177 | |
| 1178 | ostate = tcp_debug_capture(tp, PRU_SENDOOB); |
| 1179 | |
| 1180 | s = splsoftnet(); |
| 1181 | if (sbspace(&so->so_snd) < -512) { |
| 1182 | m_freem(m); |
| 1183 | splx(s); |
| 1184 | return ENOBUFS; |
| 1185 | } |
| 1186 | /* |
| 1187 | * According to RFC961 (Assigned Protocols), |
| 1188 | * the urgent pointer points to the last octet |
| 1189 | * of urgent data. We continue, however, |
| 1190 | * to consider it to indicate the first octet |
| 1191 | * of data past the urgent section. |
| 1192 | * Otherwise, snd_up should be one lower. |
| 1193 | */ |
| 1194 | sbappendstream(&so->so_snd, m); |
| 1195 | tp->snd_up = tp->snd_una + so->so_snd.sb_cc; |
| 1196 | tp->t_force = 1; |
| 1197 | error = tcp_output(tp); |
| 1198 | tp->t_force = 0; |
| 1199 | tcp_debug_trace(so, tp, ostate, PRU_SENDOOB); |
| 1200 | splx(s); |
| 1201 | |
| 1202 | return error; |
| 1203 | } |
| 1204 | |
| 1205 | static int |
| 1206 | tcp_purgeif(struct socket *so, struct ifnet *ifp) |
| 1207 | { |
| 1208 | int s; |
| 1209 | int error = 0; |
| 1210 | |
| 1211 | s = splsoftnet(); |
| 1212 | |
| 1213 | #ifndef NET_MPSAFE |
| 1214 | mutex_enter(softnet_lock); |
| 1215 | #endif |
| 1216 | switch (so->so_proto->pr_domain->dom_family) { |
| 1217 | #ifdef INET |
| 1218 | case PF_INET: |
| 1219 | in_pcbpurgeif0(&tcbtable, ifp); |
| 1220 | in_purgeif(ifp); |
| 1221 | in_pcbpurgeif(&tcbtable, ifp); |
| 1222 | break; |
| 1223 | #endif |
| 1224 | #ifdef INET6 |
| 1225 | case PF_INET6: |
| 1226 | in6_pcbpurgeif0(&tcbtable, ifp); |
| 1227 | in6_purgeif(ifp); |
| 1228 | in6_pcbpurgeif(&tcbtable, ifp); |
| 1229 | break; |
| 1230 | #endif |
| 1231 | default: |
| 1232 | error = EAFNOSUPPORT; |
| 1233 | break; |
| 1234 | } |
| 1235 | #ifndef NET_MPSAFE |
| 1236 | mutex_exit(softnet_lock); |
| 1237 | #endif |
| 1238 | splx(s); |
| 1239 | |
| 1240 | return error; |
| 1241 | } |
| 1242 | |
| 1243 | /* |
| 1244 | * Initiate (or continue) disconnect. |
| 1245 | * If embryonic state, just send reset (once). |
| 1246 | * If in ``let data drain'' option and linger null, just drop. |
| 1247 | * Otherwise (hard), mark socket disconnecting and drop |
| 1248 | * current input data; switch states based on user close, and |
| 1249 | * send segment to peer (with FIN). |
| 1250 | */ |
| 1251 | struct tcpcb * |
| 1252 | tcp_disconnect1(struct tcpcb *tp) |
| 1253 | { |
| 1254 | struct socket *so; |
| 1255 | |
| 1256 | if (tp->t_inpcb) |
| 1257 | so = tp->t_inpcb->inp_socket; |
| 1258 | #ifdef INET6 |
| 1259 | else if (tp->t_in6pcb) |
| 1260 | so = tp->t_in6pcb->in6p_socket; |
| 1261 | #endif |
| 1262 | else |
| 1263 | so = NULL; |
| 1264 | |
| 1265 | if (TCPS_HAVEESTABLISHED(tp->t_state) == 0) |
| 1266 | tp = tcp_close(tp); |
| 1267 | else if ((so->so_options & SO_LINGER) && so->so_linger == 0) |
| 1268 | tp = tcp_drop(tp, 0); |
| 1269 | else { |
| 1270 | soisdisconnecting(so); |
| 1271 | sbflush(&so->so_rcv); |
| 1272 | tp = tcp_usrclosed(tp); |
| 1273 | if (tp) |
| 1274 | (void) tcp_output(tp); |
| 1275 | } |
| 1276 | return (tp); |
| 1277 | } |
| 1278 | |
| 1279 | /* |
| 1280 | * User issued close, and wish to trail through shutdown states: |
| 1281 | * if never received SYN, just forget it. If got a SYN from peer, |
| 1282 | * but haven't sent FIN, then go to FIN_WAIT_1 state to send peer a FIN. |
| 1283 | * If already got a FIN from peer, then almost done; go to LAST_ACK |
| 1284 | * state. In all other cases, have already sent FIN to peer (e.g. |
| 1285 | * after PRU_SHUTDOWN), and just have to play tedious game waiting |
| 1286 | * for peer to send FIN or not respond to keep-alives, etc. |
| 1287 | * We can let the user exit from the close as soon as the FIN is acked. |
| 1288 | */ |
| 1289 | struct tcpcb * |
| 1290 | tcp_usrclosed(struct tcpcb *tp) |
| 1291 | { |
| 1292 | |
| 1293 | switch (tp->t_state) { |
| 1294 | |
| 1295 | case TCPS_CLOSED: |
| 1296 | case TCPS_LISTEN: |
| 1297 | case TCPS_SYN_SENT: |
| 1298 | tp->t_state = TCPS_CLOSED; |
| 1299 | tp = tcp_close(tp); |
| 1300 | break; |
| 1301 | |
| 1302 | case TCPS_SYN_RECEIVED: |
| 1303 | case TCPS_ESTABLISHED: |
| 1304 | tp->t_state = TCPS_FIN_WAIT_1; |
| 1305 | break; |
| 1306 | |
| 1307 | case TCPS_CLOSE_WAIT: |
| 1308 | tp->t_state = TCPS_LAST_ACK; |
| 1309 | break; |
| 1310 | } |
| 1311 | if (tp && tp->t_state >= TCPS_FIN_WAIT_2) { |
| 1312 | struct socket *so; |
| 1313 | if (tp->t_inpcb) |
| 1314 | so = tp->t_inpcb->inp_socket; |
| 1315 | #ifdef INET6 |
| 1316 | else if (tp->t_in6pcb) |
| 1317 | so = tp->t_in6pcb->in6p_socket; |
| 1318 | #endif |
| 1319 | else |
| 1320 | so = NULL; |
| 1321 | if (so) |
| 1322 | soisdisconnected(so); |
| 1323 | /* |
| 1324 | * If we are in FIN_WAIT_2, we arrived here because the |
| 1325 | * application did a shutdown of the send side. Like the |
| 1326 | * case of a transition from FIN_WAIT_1 to FIN_WAIT_2 after |
| 1327 | * a full close, we start a timer to make sure sockets are |
| 1328 | * not left in FIN_WAIT_2 forever. |
| 1329 | */ |
| 1330 | if ((tp->t_state == TCPS_FIN_WAIT_2) && (tp->t_maxidle > 0)) |
| 1331 | TCP_TIMER_ARM(tp, TCPT_2MSL, tp->t_maxidle); |
| 1332 | else if (tp->t_state == TCPS_TIME_WAIT |
| 1333 | && ((tp->t_inpcb |
| 1334 | && (tcp4_vtw_enable & 1) |
| 1335 | && vtw_add(AF_INET, tp)) |
| 1336 | || |
| 1337 | (tp->t_in6pcb |
| 1338 | && (tcp6_vtw_enable & 1) |
| 1339 | && vtw_add(AF_INET6, tp)))) { |
| 1340 | tp = 0; |
| 1341 | } |
| 1342 | } |
| 1343 | return (tp); |
| 1344 | } |
| 1345 | |
| 1346 | /* |
| 1347 | * sysctl helper routine for net.inet.ip.mssdflt. it can't be less |
| 1348 | * than 32. |
| 1349 | */ |
| 1350 | static int |
| 1351 | sysctl_net_inet_tcp_mssdflt(SYSCTLFN_ARGS) |
| 1352 | { |
| 1353 | int error, mssdflt; |
| 1354 | struct sysctlnode node; |
| 1355 | |
| 1356 | mssdflt = tcp_mssdflt; |
| 1357 | node = *rnode; |
| 1358 | node.sysctl_data = &mssdflt; |
| 1359 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1360 | if (error || newp == NULL) |
| 1361 | return (error); |
| 1362 | |
| 1363 | if (mssdflt < 32) |
| 1364 | return (EINVAL); |
| 1365 | tcp_mssdflt = mssdflt; |
| 1366 | |
| 1367 | mutex_enter(softnet_lock); |
| 1368 | tcp_tcpcb_template(); |
| 1369 | mutex_exit(softnet_lock); |
| 1370 | |
| 1371 | return (0); |
| 1372 | } |
| 1373 | |
| 1374 | /* |
| 1375 | * sysctl helper for TCP CB template update |
| 1376 | */ |
| 1377 | static int |
| 1378 | sysctl_update_tcpcb_template(SYSCTLFN_ARGS) |
| 1379 | { |
| 1380 | int t, error; |
| 1381 | struct sysctlnode node; |
| 1382 | |
| 1383 | /* follow procedures in sysctl(9) manpage */ |
| 1384 | t = *(int *)rnode->sysctl_data; |
| 1385 | node = *rnode; |
| 1386 | node.sysctl_data = &t; |
| 1387 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1388 | if (error || newp == NULL) |
| 1389 | return error; |
| 1390 | |
| 1391 | if (t < 0) |
| 1392 | return EINVAL; |
| 1393 | |
| 1394 | *(int *)rnode->sysctl_data = t; |
| 1395 | |
| 1396 | mutex_enter(softnet_lock); |
| 1397 | tcp_tcpcb_template(); |
| 1398 | mutex_exit(softnet_lock); |
| 1399 | |
| 1400 | return 0; |
| 1401 | } |
| 1402 | |
| 1403 | /* |
| 1404 | * sysctl helper routine for setting port related values under |
| 1405 | * net.inet.ip and net.inet6.ip6. does basic range checking and does |
| 1406 | * additional checks for each type. this code has placed in |
| 1407 | * tcp_input.c since INET and INET6 both use the same tcp code. |
| 1408 | * |
| 1409 | * this helper is not static so that both inet and inet6 can use it. |
| 1410 | */ |
| 1411 | int |
| 1412 | sysctl_net_inet_ip_ports(SYSCTLFN_ARGS) |
| 1413 | { |
| 1414 | int error, tmp; |
| 1415 | int apmin, apmax; |
| 1416 | #ifndef IPNOPRIVPORTS |
| 1417 | int lpmin, lpmax; |
| 1418 | #endif /* IPNOPRIVPORTS */ |
| 1419 | struct sysctlnode node; |
| 1420 | |
| 1421 | if (namelen != 0) |
| 1422 | return (EINVAL); |
| 1423 | |
| 1424 | switch (name[-3]) { |
| 1425 | #ifdef INET |
| 1426 | case PF_INET: |
| 1427 | apmin = anonportmin; |
| 1428 | apmax = anonportmax; |
| 1429 | #ifndef IPNOPRIVPORTS |
| 1430 | lpmin = lowportmin; |
| 1431 | lpmax = lowportmax; |
| 1432 | #endif /* IPNOPRIVPORTS */ |
| 1433 | break; |
| 1434 | #endif /* INET */ |
| 1435 | #ifdef INET6 |
| 1436 | case PF_INET6: |
| 1437 | apmin = ip6_anonportmin; |
| 1438 | apmax = ip6_anonportmax; |
| 1439 | #ifndef IPNOPRIVPORTS |
| 1440 | lpmin = ip6_lowportmin; |
| 1441 | lpmax = ip6_lowportmax; |
| 1442 | #endif /* IPNOPRIVPORTS */ |
| 1443 | break; |
| 1444 | #endif /* INET6 */ |
| 1445 | default: |
| 1446 | return (EINVAL); |
| 1447 | } |
| 1448 | |
| 1449 | /* |
| 1450 | * insert temporary copy into node, perform lookup on |
| 1451 | * temporary, then restore pointer |
| 1452 | */ |
| 1453 | node = *rnode; |
| 1454 | tmp = *(int*)rnode->sysctl_data; |
| 1455 | node.sysctl_data = &tmp; |
| 1456 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1457 | if (error || newp == NULL) |
| 1458 | return (error); |
| 1459 | |
| 1460 | /* |
| 1461 | * simple port range check |
| 1462 | */ |
| 1463 | if (tmp < 0 || tmp > 65535) |
| 1464 | return (EINVAL); |
| 1465 | |
| 1466 | /* |
| 1467 | * per-node range checks |
| 1468 | */ |
| 1469 | switch (rnode->sysctl_num) { |
| 1470 | case IPCTL_ANONPORTMIN: |
| 1471 | case IPV6CTL_ANONPORTMIN: |
| 1472 | if (tmp >= apmax) |
| 1473 | return (EINVAL); |
| 1474 | #ifndef IPNOPRIVPORTS |
| 1475 | if (tmp < IPPORT_RESERVED) |
| 1476 | return (EINVAL); |
| 1477 | #endif /* IPNOPRIVPORTS */ |
| 1478 | break; |
| 1479 | |
| 1480 | case IPCTL_ANONPORTMAX: |
| 1481 | case IPV6CTL_ANONPORTMAX: |
| 1482 | if (apmin >= tmp) |
| 1483 | return (EINVAL); |
| 1484 | #ifndef IPNOPRIVPORTS |
| 1485 | if (tmp < IPPORT_RESERVED) |
| 1486 | return (EINVAL); |
| 1487 | #endif /* IPNOPRIVPORTS */ |
| 1488 | break; |
| 1489 | |
| 1490 | #ifndef IPNOPRIVPORTS |
| 1491 | case IPCTL_LOWPORTMIN: |
| 1492 | case IPV6CTL_LOWPORTMIN: |
| 1493 | if (tmp >= lpmax || |
| 1494 | tmp > IPPORT_RESERVEDMAX || |
| 1495 | tmp < IPPORT_RESERVEDMIN) |
| 1496 | return (EINVAL); |
| 1497 | break; |
| 1498 | |
| 1499 | case IPCTL_LOWPORTMAX: |
| 1500 | case IPV6CTL_LOWPORTMAX: |
| 1501 | if (lpmin >= tmp || |
| 1502 | tmp > IPPORT_RESERVEDMAX || |
| 1503 | tmp < IPPORT_RESERVEDMIN) |
| 1504 | return (EINVAL); |
| 1505 | break; |
| 1506 | #endif /* IPNOPRIVPORTS */ |
| 1507 | |
| 1508 | default: |
| 1509 | return (EINVAL); |
| 1510 | } |
| 1511 | |
| 1512 | *(int*)rnode->sysctl_data = tmp; |
| 1513 | |
| 1514 | return (0); |
| 1515 | } |
| 1516 | |
| 1517 | static inline int |
| 1518 | copyout_uid(struct socket *sockp, void *oldp, size_t *oldlenp) |
| 1519 | { |
| 1520 | if (oldp) { |
| 1521 | size_t sz; |
| 1522 | uid_t uid; |
| 1523 | int error; |
| 1524 | |
| 1525 | if (sockp->so_cred == NULL) |
| 1526 | return EPERM; |
| 1527 | |
| 1528 | uid = kauth_cred_geteuid(sockp->so_cred); |
| 1529 | sz = MIN(sizeof(uid), *oldlenp); |
| 1530 | if ((error = copyout(&uid, oldp, sz)) != 0) |
| 1531 | return error; |
| 1532 | } |
| 1533 | *oldlenp = sizeof(uid_t); |
| 1534 | return 0; |
| 1535 | } |
| 1536 | |
| 1537 | static inline int |
| 1538 | inet4_ident_core(struct in_addr raddr, u_int rport, |
| 1539 | struct in_addr laddr, u_int lport, |
| 1540 | void *oldp, size_t *oldlenp, |
| 1541 | struct lwp *l, int dodrop) |
| 1542 | { |
| 1543 | struct inpcb *inp; |
| 1544 | struct socket *sockp; |
| 1545 | |
| 1546 | inp = in_pcblookup_connect(&tcbtable, raddr, rport, laddr, lport, 0); |
| 1547 | |
| 1548 | if (inp == NULL || (sockp = inp->inp_socket) == NULL) |
| 1549 | return ESRCH; |
| 1550 | |
| 1551 | if (dodrop) { |
| 1552 | struct tcpcb *tp; |
| 1553 | int error; |
| 1554 | |
| 1555 | if (inp == NULL || (tp = intotcpcb(inp)) == NULL || |
| 1556 | (inp->inp_socket->so_options & SO_ACCEPTCONN) != 0) |
| 1557 | return ESRCH; |
| 1558 | |
| 1559 | error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, |
| 1560 | KAUTH_REQ_NETWORK_SOCKET_DROP, inp->inp_socket, tp, NULL); |
| 1561 | if (error) |
| 1562 | return (error); |
| 1563 | |
| 1564 | (void)tcp_drop(tp, ECONNABORTED); |
| 1565 | return 0; |
| 1566 | } |
| 1567 | else |
| 1568 | return copyout_uid(sockp, oldp, oldlenp); |
| 1569 | } |
| 1570 | |
| 1571 | #ifdef INET6 |
| 1572 | static inline int |
| 1573 | inet6_ident_core(struct in6_addr *raddr, u_int rport, |
| 1574 | struct in6_addr *laddr, u_int lport, |
| 1575 | void *oldp, size_t *oldlenp, |
| 1576 | struct lwp *l, int dodrop) |
| 1577 | { |
| 1578 | struct in6pcb *in6p; |
| 1579 | struct socket *sockp; |
| 1580 | |
| 1581 | in6p = in6_pcblookup_connect(&tcbtable, raddr, rport, laddr, lport, 0, 0); |
| 1582 | |
| 1583 | if (in6p == NULL || (sockp = in6p->in6p_socket) == NULL) |
| 1584 | return ESRCH; |
| 1585 | |
| 1586 | if (dodrop) { |
| 1587 | struct tcpcb *tp; |
| 1588 | int error; |
| 1589 | |
| 1590 | if (in6p == NULL || (tp = in6totcpcb(in6p)) == NULL || |
| 1591 | (in6p->in6p_socket->so_options & SO_ACCEPTCONN) != 0) |
| 1592 | return ESRCH; |
| 1593 | |
| 1594 | error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, |
| 1595 | KAUTH_REQ_NETWORK_SOCKET_DROP, in6p->in6p_socket, tp, NULL); |
| 1596 | if (error) |
| 1597 | return (error); |
| 1598 | |
| 1599 | (void)tcp_drop(tp, ECONNABORTED); |
| 1600 | return 0; |
| 1601 | } |
| 1602 | else |
| 1603 | return copyout_uid(sockp, oldp, oldlenp); |
| 1604 | } |
| 1605 | #endif |
| 1606 | |
| 1607 | /* |
| 1608 | * sysctl helper routine for the net.inet.tcp.drop and |
| 1609 | * net.inet6.tcp6.drop nodes. |
| 1610 | */ |
| 1611 | #define sysctl_net_inet_tcp_drop sysctl_net_inet_tcp_ident |
| 1612 | |
| 1613 | /* |
| 1614 | * sysctl helper routine for the net.inet.tcp.ident and |
| 1615 | * net.inet6.tcp6.ident nodes. contains backwards compat code for the |
| 1616 | * old way of looking up the ident information for ipv4 which involves |
| 1617 | * stuffing the port/addr pairs into the mib lookup. |
| 1618 | */ |
| 1619 | static int |
| 1620 | sysctl_net_inet_tcp_ident(SYSCTLFN_ARGS) |
| 1621 | { |
| 1622 | #ifdef INET |
| 1623 | struct sockaddr_in *si4[2]; |
| 1624 | #endif /* INET */ |
| 1625 | #ifdef INET6 |
| 1626 | struct sockaddr_in6 *si6[2]; |
| 1627 | #endif /* INET6 */ |
| 1628 | struct sockaddr_storage sa[2]; |
| 1629 | int error, pf, dodrop; |
| 1630 | |
| 1631 | dodrop = name[-1] == TCPCTL_DROP; |
| 1632 | if (dodrop) { |
| 1633 | if (oldp != NULL || *oldlenp != 0) |
| 1634 | return EINVAL; |
| 1635 | if (newp == NULL) |
| 1636 | return EPERM; |
| 1637 | if (newlen < sizeof(sa)) |
| 1638 | return ENOMEM; |
| 1639 | } |
| 1640 | if (namelen != 4 && namelen != 0) |
| 1641 | return EINVAL; |
| 1642 | if (name[-2] != IPPROTO_TCP) |
| 1643 | return EINVAL; |
| 1644 | pf = name[-3]; |
| 1645 | |
| 1646 | /* old style lookup, ipv4 only */ |
| 1647 | if (namelen == 4) { |
| 1648 | #ifdef INET |
| 1649 | struct in_addr laddr, raddr; |
| 1650 | u_int lport, rport; |
| 1651 | |
| 1652 | if (pf != PF_INET) |
| 1653 | return EPROTONOSUPPORT; |
| 1654 | raddr.s_addr = (uint32_t)name[0]; |
| 1655 | rport = (u_int)name[1]; |
| 1656 | laddr.s_addr = (uint32_t)name[2]; |
| 1657 | lport = (u_int)name[3]; |
| 1658 | |
| 1659 | mutex_enter(softnet_lock); |
| 1660 | error = inet4_ident_core(raddr, rport, laddr, lport, |
| 1661 | oldp, oldlenp, l, dodrop); |
| 1662 | mutex_exit(softnet_lock); |
| 1663 | return error; |
| 1664 | #else /* INET */ |
| 1665 | return EINVAL; |
| 1666 | #endif /* INET */ |
| 1667 | } |
| 1668 | |
| 1669 | if (newp == NULL || newlen != sizeof(sa)) |
| 1670 | return EINVAL; |
| 1671 | error = copyin(newp, &sa, newlen); |
| 1672 | if (error) |
| 1673 | return error; |
| 1674 | |
| 1675 | /* |
| 1676 | * requested families must match |
| 1677 | */ |
| 1678 | if (pf != sa[0].ss_family || sa[0].ss_family != sa[1].ss_family) |
| 1679 | return EINVAL; |
| 1680 | |
| 1681 | switch (pf) { |
| 1682 | #ifdef INET6 |
| 1683 | case PF_INET6: |
| 1684 | si6[0] = (struct sockaddr_in6*)&sa[0]; |
| 1685 | si6[1] = (struct sockaddr_in6*)&sa[1]; |
| 1686 | if (si6[0]->sin6_len != sizeof(*si6[0]) || |
| 1687 | si6[1]->sin6_len != sizeof(*si6[1])) |
| 1688 | return EINVAL; |
| 1689 | |
| 1690 | if (!IN6_IS_ADDR_V4MAPPED(&si6[0]->sin6_addr) && |
| 1691 | !IN6_IS_ADDR_V4MAPPED(&si6[1]->sin6_addr)) { |
| 1692 | error = sa6_embedscope(si6[0], ip6_use_defzone); |
| 1693 | if (error) |
| 1694 | return error; |
| 1695 | error = sa6_embedscope(si6[1], ip6_use_defzone); |
| 1696 | if (error) |
| 1697 | return error; |
| 1698 | |
| 1699 | mutex_enter(softnet_lock); |
| 1700 | error = inet6_ident_core(&si6[0]->sin6_addr, |
| 1701 | si6[0]->sin6_port, &si6[1]->sin6_addr, |
| 1702 | si6[1]->sin6_port, oldp, oldlenp, l, dodrop); |
| 1703 | mutex_exit(softnet_lock); |
| 1704 | return error; |
| 1705 | } |
| 1706 | |
| 1707 | if (IN6_IS_ADDR_V4MAPPED(&si6[0]->sin6_addr) != |
| 1708 | IN6_IS_ADDR_V4MAPPED(&si6[1]->sin6_addr)) |
| 1709 | return EINVAL; |
| 1710 | |
| 1711 | in6_sin6_2_sin_in_sock((struct sockaddr *)&sa[0]); |
| 1712 | in6_sin6_2_sin_in_sock((struct sockaddr *)&sa[1]); |
| 1713 | /*FALLTHROUGH*/ |
| 1714 | #endif /* INET6 */ |
| 1715 | #ifdef INET |
| 1716 | case PF_INET: |
| 1717 | si4[0] = (struct sockaddr_in*)&sa[0]; |
| 1718 | si4[1] = (struct sockaddr_in*)&sa[1]; |
| 1719 | if (si4[0]->sin_len != sizeof(*si4[0]) || |
| 1720 | si4[0]->sin_len != sizeof(*si4[1])) |
| 1721 | return EINVAL; |
| 1722 | |
| 1723 | mutex_enter(softnet_lock); |
| 1724 | error = inet4_ident_core(si4[0]->sin_addr, si4[0]->sin_port, |
| 1725 | si4[1]->sin_addr, si4[1]->sin_port, |
| 1726 | oldp, oldlenp, l, dodrop); |
| 1727 | mutex_exit(softnet_lock); |
| 1728 | return error; |
| 1729 | #endif /* INET */ |
| 1730 | default: |
| 1731 | return EPROTONOSUPPORT; |
| 1732 | } |
| 1733 | } |
| 1734 | |
| 1735 | /* |
| 1736 | * sysctl helper for the inet and inet6 pcblists. handles tcp/udp and |
| 1737 | * inet/inet6, as well as raw pcbs for each. specifically not |
| 1738 | * declared static so that raw sockets and udp/udp6 can use it as |
| 1739 | * well. |
| 1740 | */ |
| 1741 | int |
| 1742 | sysctl_inpcblist(SYSCTLFN_ARGS) |
| 1743 | { |
| 1744 | #ifdef INET |
| 1745 | struct sockaddr_in *in; |
| 1746 | const struct inpcb *inp; |
| 1747 | #endif |
| 1748 | #ifdef INET6 |
| 1749 | struct sockaddr_in6 *in6; |
| 1750 | const struct in6pcb *in6p; |
| 1751 | #endif |
| 1752 | struct inpcbtable *pcbtbl = __UNCONST(rnode->sysctl_data); |
| 1753 | const struct inpcb_hdr *inph; |
| 1754 | struct tcpcb *tp; |
| 1755 | struct kinfo_pcb pcb; |
| 1756 | char *dp; |
| 1757 | size_t len, needed, elem_size, out_size; |
| 1758 | int error, elem_count, pf, proto, pf2; |
| 1759 | |
| 1760 | if (namelen != 4) |
| 1761 | return (EINVAL); |
| 1762 | |
| 1763 | if (oldp != NULL) { |
| 1764 | len = *oldlenp; |
| 1765 | elem_size = name[2]; |
| 1766 | elem_count = name[3]; |
| 1767 | if (elem_size != sizeof(pcb)) |
| 1768 | return EINVAL; |
| 1769 | } else { |
| 1770 | len = 0; |
| 1771 | elem_count = INT_MAX; |
| 1772 | elem_size = sizeof(pcb); |
| 1773 | } |
| 1774 | error = 0; |
| 1775 | dp = oldp; |
| 1776 | out_size = elem_size; |
| 1777 | needed = 0; |
| 1778 | |
| 1779 | if (namelen == 1 && name[0] == CTL_QUERY) |
| 1780 | return (sysctl_query(SYSCTLFN_CALL(rnode))); |
| 1781 | |
| 1782 | if (name - oname != 4) |
| 1783 | return (EINVAL); |
| 1784 | |
| 1785 | pf = oname[1]; |
| 1786 | proto = oname[2]; |
| 1787 | pf2 = (oldp != NULL) ? pf : 0; |
| 1788 | |
| 1789 | mutex_enter(softnet_lock); |
| 1790 | |
| 1791 | TAILQ_FOREACH(inph, &pcbtbl->inpt_queue, inph_queue) { |
| 1792 | #ifdef INET |
| 1793 | inp = (const struct inpcb *)inph; |
| 1794 | #endif |
| 1795 | #ifdef INET6 |
| 1796 | in6p = (const struct in6pcb *)inph; |
| 1797 | #endif |
| 1798 | |
| 1799 | if (inph->inph_af != pf) |
| 1800 | continue; |
| 1801 | |
| 1802 | if (kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, |
| 1803 | KAUTH_REQ_NETWORK_SOCKET_CANSEE, inph->inph_socket, NULL, |
| 1804 | NULL) != 0) |
| 1805 | continue; |
| 1806 | |
| 1807 | memset(&pcb, 0, sizeof(pcb)); |
| 1808 | |
| 1809 | pcb.ki_family = pf; |
| 1810 | pcb.ki_type = proto; |
| 1811 | |
| 1812 | switch (pf2) { |
| 1813 | case 0: |
| 1814 | /* just probing for size */ |
| 1815 | break; |
| 1816 | #ifdef INET |
| 1817 | case PF_INET: |
| 1818 | pcb.ki_family = inp->inp_socket->so_proto-> |
| 1819 | pr_domain->dom_family; |
| 1820 | pcb.ki_type = inp->inp_socket->so_proto-> |
| 1821 | pr_type; |
| 1822 | pcb.ki_protocol = inp->inp_socket->so_proto-> |
| 1823 | pr_protocol; |
| 1824 | pcb.ki_pflags = inp->inp_flags; |
| 1825 | |
| 1826 | pcb.ki_sostate = inp->inp_socket->so_state; |
| 1827 | pcb.ki_prstate = inp->inp_state; |
| 1828 | if (proto == IPPROTO_TCP) { |
| 1829 | tp = intotcpcb(inp); |
| 1830 | pcb.ki_tstate = tp->t_state; |
| 1831 | pcb.ki_tflags = tp->t_flags; |
| 1832 | } |
| 1833 | |
| 1834 | pcb.ki_pcbaddr = PTRTOUINT64(inp); |
| 1835 | pcb.ki_ppcbaddr = PTRTOUINT64(inp->inp_ppcb); |
| 1836 | pcb.ki_sockaddr = PTRTOUINT64(inp->inp_socket); |
| 1837 | |
| 1838 | pcb.ki_rcvq = inp->inp_socket->so_rcv.sb_cc; |
| 1839 | pcb.ki_sndq = inp->inp_socket->so_snd.sb_cc; |
| 1840 | |
| 1841 | in = satosin(&pcb.ki_src); |
| 1842 | in->sin_len = sizeof(*in); |
| 1843 | in->sin_family = pf; |
| 1844 | in->sin_port = inp->inp_lport; |
| 1845 | in->sin_addr = inp->inp_laddr; |
| 1846 | if (pcb.ki_prstate >= INP_CONNECTED) { |
| 1847 | in = satosin(&pcb.ki_dst); |
| 1848 | in->sin_len = sizeof(*in); |
| 1849 | in->sin_family = pf; |
| 1850 | in->sin_port = inp->inp_fport; |
| 1851 | in->sin_addr = inp->inp_faddr; |
| 1852 | } |
| 1853 | break; |
| 1854 | #endif |
| 1855 | #ifdef INET6 |
| 1856 | case PF_INET6: |
| 1857 | pcb.ki_family = in6p->in6p_socket->so_proto-> |
| 1858 | pr_domain->dom_family; |
| 1859 | pcb.ki_type = in6p->in6p_socket->so_proto->pr_type; |
| 1860 | pcb.ki_protocol = in6p->in6p_socket->so_proto-> |
| 1861 | pr_protocol; |
| 1862 | pcb.ki_pflags = in6p->in6p_flags; |
| 1863 | |
| 1864 | pcb.ki_sostate = in6p->in6p_socket->so_state; |
| 1865 | pcb.ki_prstate = in6p->in6p_state; |
| 1866 | if (proto == IPPROTO_TCP) { |
| 1867 | tp = in6totcpcb(in6p); |
| 1868 | pcb.ki_tstate = tp->t_state; |
| 1869 | pcb.ki_tflags = tp->t_flags; |
| 1870 | } |
| 1871 | |
| 1872 | pcb.ki_pcbaddr = PTRTOUINT64(in6p); |
| 1873 | pcb.ki_ppcbaddr = PTRTOUINT64(in6p->in6p_ppcb); |
| 1874 | pcb.ki_sockaddr = PTRTOUINT64(in6p->in6p_socket); |
| 1875 | |
| 1876 | pcb.ki_rcvq = in6p->in6p_socket->so_rcv.sb_cc; |
| 1877 | pcb.ki_sndq = in6p->in6p_socket->so_snd.sb_cc; |
| 1878 | |
| 1879 | in6 = satosin6(&pcb.ki_src); |
| 1880 | in6->sin6_len = sizeof(*in6); |
| 1881 | in6->sin6_family = pf; |
| 1882 | in6->sin6_port = in6p->in6p_lport; |
| 1883 | in6->sin6_flowinfo = in6p->in6p_flowinfo; |
| 1884 | in6->sin6_addr = in6p->in6p_laddr; |
| 1885 | in6->sin6_scope_id = 0; /* XXX? */ |
| 1886 | |
| 1887 | if (pcb.ki_prstate >= IN6P_CONNECTED) { |
| 1888 | in6 = satosin6(&pcb.ki_dst); |
| 1889 | in6->sin6_len = sizeof(*in6); |
| 1890 | in6->sin6_family = pf; |
| 1891 | in6->sin6_port = in6p->in6p_fport; |
| 1892 | in6->sin6_flowinfo = in6p->in6p_flowinfo; |
| 1893 | in6->sin6_addr = in6p->in6p_faddr; |
| 1894 | in6->sin6_scope_id = 0; /* XXX? */ |
| 1895 | } |
| 1896 | break; |
| 1897 | #endif |
| 1898 | } |
| 1899 | |
| 1900 | if (len >= elem_size && elem_count > 0) { |
| 1901 | error = copyout(&pcb, dp, out_size); |
| 1902 | if (error) { |
| 1903 | mutex_exit(softnet_lock); |
| 1904 | return (error); |
| 1905 | } |
| 1906 | dp += elem_size; |
| 1907 | len -= elem_size; |
| 1908 | } |
| 1909 | needed += elem_size; |
| 1910 | if (elem_count > 0 && elem_count != INT_MAX) |
| 1911 | elem_count--; |
| 1912 | } |
| 1913 | |
| 1914 | *oldlenp = needed; |
| 1915 | if (oldp == NULL) |
| 1916 | *oldlenp += PCB_SLOP * sizeof(struct kinfo_pcb); |
| 1917 | |
| 1918 | mutex_exit(softnet_lock); |
| 1919 | |
| 1920 | return (error); |
| 1921 | } |
| 1922 | |
| 1923 | static int |
| 1924 | sysctl_tcp_congctl(SYSCTLFN_ARGS) |
| 1925 | { |
| 1926 | struct sysctlnode node; |
| 1927 | int error; |
| 1928 | char newname[TCPCC_MAXLEN]; |
| 1929 | |
| 1930 | strlcpy(newname, tcp_congctl_global_name, sizeof(newname) - 1); |
| 1931 | |
| 1932 | node = *rnode; |
| 1933 | node.sysctl_data = newname; |
| 1934 | node.sysctl_size = sizeof(newname); |
| 1935 | |
| 1936 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1937 | |
| 1938 | if (error || |
| 1939 | newp == NULL || |
| 1940 | strncmp(newname, tcp_congctl_global_name, sizeof(newname)) == 0) |
| 1941 | return error; |
| 1942 | |
| 1943 | mutex_enter(softnet_lock); |
| 1944 | error = tcp_congctl_select(NULL, newname); |
| 1945 | mutex_exit(softnet_lock); |
| 1946 | |
| 1947 | return error; |
| 1948 | } |
| 1949 | |
| 1950 | static int |
| 1951 | sysctl_tcp_init_win(SYSCTLFN_ARGS) |
| 1952 | { |
| 1953 | int error; |
| 1954 | u_int iw; |
| 1955 | struct sysctlnode node; |
| 1956 | |
| 1957 | iw = *(u_int *)rnode->sysctl_data; |
| 1958 | node = *rnode; |
| 1959 | node.sysctl_data = &iw; |
| 1960 | node.sysctl_size = sizeof(iw); |
| 1961 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1962 | if (error || newp == NULL) |
| 1963 | return error; |
| 1964 | |
| 1965 | if (iw >= __arraycount(tcp_init_win_max)) |
| 1966 | return EINVAL; |
| 1967 | *(u_int *)rnode->sysctl_data = iw; |
| 1968 | return 0; |
| 1969 | } |
| 1970 | |
| 1971 | static int |
| 1972 | sysctl_tcp_keep(SYSCTLFN_ARGS) |
| 1973 | { |
| 1974 | int error; |
| 1975 | u_int tmp; |
| 1976 | struct sysctlnode node; |
| 1977 | |
| 1978 | node = *rnode; |
| 1979 | tmp = *(u_int *)rnode->sysctl_data; |
| 1980 | node.sysctl_data = &tmp; |
| 1981 | |
| 1982 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
| 1983 | if (error || newp == NULL) |
| 1984 | return error; |
| 1985 | |
| 1986 | mutex_enter(softnet_lock); |
| 1987 | |
| 1988 | *(u_int *)rnode->sysctl_data = tmp; |
| 1989 | tcp_tcpcb_template(); /* update the template */ |
| 1990 | |
| 1991 | mutex_exit(softnet_lock); |
| 1992 | return 0; |
| 1993 | } |
| 1994 | |
| 1995 | static int |
| 1996 | sysctl_net_inet_tcp_stats(SYSCTLFN_ARGS) |
| 1997 | { |
| 1998 | |
| 1999 | return (NETSTAT_SYSCTL(tcpstat_percpu, TCP_NSTATS)); |
| 2000 | } |
| 2001 | |
| 2002 | /* |
| 2003 | * this (second stage) setup routine is a replacement for tcp_sysctl() |
| 2004 | * (which is currently used for ipv4 and ipv6) |
| 2005 | */ |
| 2006 | static void |
| 2007 | sysctl_net_inet_tcp_setup2(struct sysctllog **clog, int pf, const char *pfname, |
| 2008 | const char *tcpname) |
| 2009 | { |
| 2010 | const struct sysctlnode *sack_node; |
| 2011 | const struct sysctlnode *abc_node; |
| 2012 | const struct sysctlnode *ecn_node; |
| 2013 | const struct sysctlnode *congctl_node; |
| 2014 | const struct sysctlnode *mslt_node; |
| 2015 | const struct sysctlnode *vtw_node; |
| 2016 | #ifdef TCP_DEBUG |
| 2017 | extern struct tcp_debug tcp_debug[TCP_NDEBUG]; |
| 2018 | extern int tcp_debx; |
| 2019 | #endif |
| 2020 | |
| 2021 | sysctl_createv(clog, 0, NULL, NULL, |
| 2022 | CTLFLAG_PERMANENT, |
| 2023 | CTLTYPE_NODE, pfname, NULL, |
| 2024 | NULL, 0, NULL, 0, |
| 2025 | CTL_NET, pf, CTL_EOL); |
| 2026 | sysctl_createv(clog, 0, NULL, NULL, |
| 2027 | CTLFLAG_PERMANENT, |
| 2028 | CTLTYPE_NODE, tcpname, |
| 2029 | SYSCTL_DESCR("TCP related settings" ), |
| 2030 | NULL, 0, NULL, 0, |
| 2031 | CTL_NET, pf, IPPROTO_TCP, CTL_EOL); |
| 2032 | |
| 2033 | sysctl_createv(clog, 0, NULL, NULL, |
| 2034 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2035 | CTLTYPE_INT, "rfc1323" , |
| 2036 | SYSCTL_DESCR("Enable RFC1323 TCP extensions" ), |
| 2037 | sysctl_update_tcpcb_template, 0, &tcp_do_rfc1323, 0, |
| 2038 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_RFC1323, CTL_EOL); |
| 2039 | sysctl_createv(clog, 0, NULL, NULL, |
| 2040 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2041 | CTLTYPE_INT, "sendspace" , |
| 2042 | SYSCTL_DESCR("Default TCP send buffer size" ), |
| 2043 | NULL, 0, &tcp_sendspace, 0, |
| 2044 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SENDSPACE, CTL_EOL); |
| 2045 | sysctl_createv(clog, 0, NULL, NULL, |
| 2046 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2047 | CTLTYPE_INT, "recvspace" , |
| 2048 | SYSCTL_DESCR("Default TCP receive buffer size" ), |
| 2049 | NULL, 0, &tcp_recvspace, 0, |
| 2050 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_RECVSPACE, CTL_EOL); |
| 2051 | sysctl_createv(clog, 0, NULL, NULL, |
| 2052 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2053 | CTLTYPE_INT, "mssdflt" , |
| 2054 | SYSCTL_DESCR("Default maximum segment size" ), |
| 2055 | sysctl_net_inet_tcp_mssdflt, 0, &tcp_mssdflt, 0, |
| 2056 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSSDFLT, CTL_EOL); |
| 2057 | sysctl_createv(clog, 0, NULL, NULL, |
| 2058 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2059 | CTLTYPE_INT, "minmss" , |
| 2060 | SYSCTL_DESCR("Lower limit for TCP maximum segment size" ), |
| 2061 | NULL, 0, &tcp_minmss, 0, |
| 2062 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2063 | sysctl_createv(clog, 0, NULL, NULL, |
| 2064 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2065 | CTLTYPE_INT, "msl" , |
| 2066 | SYSCTL_DESCR("Maximum Segment Life" ), |
| 2067 | NULL, 0, &tcp_msl, 0, |
| 2068 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSL, CTL_EOL); |
| 2069 | sysctl_createv(clog, 0, NULL, NULL, |
| 2070 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2071 | CTLTYPE_INT, "syn_cache_limit" , |
| 2072 | SYSCTL_DESCR("Maximum number of entries in the TCP " |
| 2073 | "compressed state engine" ), |
| 2074 | NULL, 0, &tcp_syn_cache_limit, 0, |
| 2075 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_CACHE_LIMIT, |
| 2076 | CTL_EOL); |
| 2077 | sysctl_createv(clog, 0, NULL, NULL, |
| 2078 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2079 | CTLTYPE_INT, "syn_bucket_limit" , |
| 2080 | SYSCTL_DESCR("Maximum number of entries per hash " |
| 2081 | "bucket in the TCP compressed state " |
| 2082 | "engine" ), |
| 2083 | NULL, 0, &tcp_syn_bucket_limit, 0, |
| 2084 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_BUCKET_LIMIT, |
| 2085 | CTL_EOL); |
| 2086 | #if 0 /* obsoleted */ |
| 2087 | sysctl_createv(clog, 0, NULL, NULL, |
| 2088 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2089 | CTLTYPE_INT, "syn_cache_interval" , |
| 2090 | SYSCTL_DESCR("TCP compressed state engine's timer interval" ), |
| 2091 | NULL, 0, &tcp_syn_cache_interval, 0, |
| 2092 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_CACHE_INTER, |
| 2093 | CTL_EOL); |
| 2094 | #endif |
| 2095 | sysctl_createv(clog, 0, NULL, NULL, |
| 2096 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2097 | CTLTYPE_INT, "init_win" , |
| 2098 | SYSCTL_DESCR("Initial TCP congestion window" ), |
| 2099 | sysctl_tcp_init_win, 0, &tcp_init_win, 0, |
| 2100 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_INIT_WIN, CTL_EOL); |
| 2101 | sysctl_createv(clog, 0, NULL, NULL, |
| 2102 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2103 | CTLTYPE_INT, "mss_ifmtu" , |
| 2104 | SYSCTL_DESCR("Use interface MTU for calculating MSS" ), |
| 2105 | NULL, 0, &tcp_mss_ifmtu, 0, |
| 2106 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSS_IFMTU, CTL_EOL); |
| 2107 | sysctl_createv(clog, 0, NULL, &sack_node, |
| 2108 | CTLFLAG_PERMANENT, |
| 2109 | CTLTYPE_NODE, "sack" , |
| 2110 | SYSCTL_DESCR("RFC2018 Selective ACKnowledgement tunables" ), |
| 2111 | NULL, 0, NULL, 0, |
| 2112 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_EOL); |
| 2113 | |
| 2114 | /* Congctl subtree */ |
| 2115 | sysctl_createv(clog, 0, NULL, &congctl_node, |
| 2116 | CTLFLAG_PERMANENT, |
| 2117 | CTLTYPE_NODE, "congctl" , |
| 2118 | SYSCTL_DESCR("TCP Congestion Control" ), |
| 2119 | NULL, 0, NULL, 0, |
| 2120 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2121 | sysctl_createv(clog, 0, &congctl_node, NULL, |
| 2122 | CTLFLAG_PERMANENT, |
| 2123 | CTLTYPE_STRING, "available" , |
| 2124 | SYSCTL_DESCR("Available Congestion Control Mechanisms" ), |
| 2125 | NULL, 0, tcp_congctl_avail, 0, CTL_CREATE, CTL_EOL); |
| 2126 | sysctl_createv(clog, 0, &congctl_node, NULL, |
| 2127 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2128 | CTLTYPE_STRING, "selected" , |
| 2129 | SYSCTL_DESCR("Selected Congestion Control Mechanism" ), |
| 2130 | sysctl_tcp_congctl, 0, NULL, TCPCC_MAXLEN, |
| 2131 | CTL_CREATE, CTL_EOL); |
| 2132 | |
| 2133 | sysctl_createv(clog, 0, NULL, NULL, |
| 2134 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2135 | CTLTYPE_INT, "win_scale" , |
| 2136 | SYSCTL_DESCR("Use RFC1323 window scale options" ), |
| 2137 | sysctl_update_tcpcb_template, 0, &tcp_do_win_scale, 0, |
| 2138 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_WSCALE, CTL_EOL); |
| 2139 | sysctl_createv(clog, 0, NULL, NULL, |
| 2140 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2141 | CTLTYPE_INT, "timestamps" , |
| 2142 | SYSCTL_DESCR("Use RFC1323 time stamp options" ), |
| 2143 | sysctl_update_tcpcb_template, 0, &tcp_do_timestamps, 0, |
| 2144 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_TSTAMP, CTL_EOL); |
| 2145 | sysctl_createv(clog, 0, NULL, NULL, |
| 2146 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2147 | CTLTYPE_INT, "compat_42" , |
| 2148 | SYSCTL_DESCR("Enable workarounds for 4.2BSD TCP bugs" ), |
| 2149 | NULL, 0, &tcp_compat_42, 0, |
| 2150 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_COMPAT_42, CTL_EOL); |
| 2151 | sysctl_createv(clog, 0, NULL, NULL, |
| 2152 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2153 | CTLTYPE_INT, "cwm" , |
| 2154 | SYSCTL_DESCR("Hughes/Touch/Heidemann Congestion Window " |
| 2155 | "Monitoring" ), |
| 2156 | NULL, 0, &tcp_cwm, 0, |
| 2157 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_CWM, CTL_EOL); |
| 2158 | sysctl_createv(clog, 0, NULL, NULL, |
| 2159 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2160 | CTLTYPE_INT, "cwm_burstsize" , |
| 2161 | SYSCTL_DESCR("Congestion Window Monitoring allowed " |
| 2162 | "burst count in packets" ), |
| 2163 | NULL, 0, &tcp_cwm_burstsize, 0, |
| 2164 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_CWM_BURSTSIZE, |
| 2165 | CTL_EOL); |
| 2166 | sysctl_createv(clog, 0, NULL, NULL, |
| 2167 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2168 | CTLTYPE_INT, "ack_on_push" , |
| 2169 | SYSCTL_DESCR("Immediately return ACK when PSH is " |
| 2170 | "received" ), |
| 2171 | NULL, 0, &tcp_ack_on_push, 0, |
| 2172 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_ACK_ON_PUSH, CTL_EOL); |
| 2173 | sysctl_createv(clog, 0, NULL, NULL, |
| 2174 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2175 | CTLTYPE_INT, "keepidle" , |
| 2176 | SYSCTL_DESCR("Allowed connection idle ticks before a " |
| 2177 | "keepalive probe is sent" ), |
| 2178 | sysctl_tcp_keep, 0, &tcp_keepidle, 0, |
| 2179 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPIDLE, CTL_EOL); |
| 2180 | sysctl_createv(clog, 0, NULL, NULL, |
| 2181 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2182 | CTLTYPE_INT, "keepintvl" , |
| 2183 | SYSCTL_DESCR("Ticks before next keepalive probe is sent" ), |
| 2184 | sysctl_tcp_keep, 0, &tcp_keepintvl, 0, |
| 2185 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPINTVL, CTL_EOL); |
| 2186 | sysctl_createv(clog, 0, NULL, NULL, |
| 2187 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2188 | CTLTYPE_INT, "keepcnt" , |
| 2189 | SYSCTL_DESCR("Number of keepalive probes to send" ), |
| 2190 | sysctl_tcp_keep, 0, &tcp_keepcnt, 0, |
| 2191 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPCNT, CTL_EOL); |
| 2192 | sysctl_createv(clog, 0, NULL, NULL, |
| 2193 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
| 2194 | CTLTYPE_INT, "slowhz" , |
| 2195 | SYSCTL_DESCR("Keepalive ticks per second" ), |
| 2196 | NULL, PR_SLOWHZ, NULL, 0, |
| 2197 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SLOWHZ, CTL_EOL); |
| 2198 | sysctl_createv(clog, 0, NULL, NULL, |
| 2199 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2200 | CTLTYPE_INT, "log_refused" , |
| 2201 | SYSCTL_DESCR("Log refused TCP connections" ), |
| 2202 | NULL, 0, &tcp_log_refused, 0, |
| 2203 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_LOG_REFUSED, CTL_EOL); |
| 2204 | #if 0 /* obsoleted */ |
| 2205 | sysctl_createv(clog, 0, NULL, NULL, |
| 2206 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2207 | CTLTYPE_INT, "rstratelimit" , NULL, |
| 2208 | NULL, 0, &tcp_rst_ratelim, 0, |
| 2209 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_RSTRATELIMIT, CTL_EOL); |
| 2210 | #endif |
| 2211 | sysctl_createv(clog, 0, NULL, NULL, |
| 2212 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2213 | CTLTYPE_INT, "rstppslimit" , |
| 2214 | SYSCTL_DESCR("Maximum number of RST packets to send " |
| 2215 | "per second" ), |
| 2216 | NULL, 0, &tcp_rst_ppslim, 0, |
| 2217 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_RSTPPSLIMIT, CTL_EOL); |
| 2218 | sysctl_createv(clog, 0, NULL, NULL, |
| 2219 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2220 | CTLTYPE_INT, "delack_ticks" , |
| 2221 | SYSCTL_DESCR("Number of ticks to delay sending an ACK" ), |
| 2222 | NULL, 0, &tcp_delack_ticks, 0, |
| 2223 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_DELACK_TICKS, CTL_EOL); |
| 2224 | sysctl_createv(clog, 0, NULL, NULL, |
| 2225 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2226 | CTLTYPE_INT, "init_win_local" , |
| 2227 | SYSCTL_DESCR("Initial TCP window size (in segments)" ), |
| 2228 | sysctl_tcp_init_win, 0, &tcp_init_win_local, 0, |
| 2229 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_INIT_WIN_LOCAL, |
| 2230 | CTL_EOL); |
| 2231 | sysctl_createv(clog, 0, NULL, NULL, |
| 2232 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2233 | CTLTYPE_STRUCT, "ident" , |
| 2234 | SYSCTL_DESCR("RFC1413 Identification Protocol lookups" ), |
| 2235 | sysctl_net_inet_tcp_ident, 0, NULL, sizeof(uid_t), |
| 2236 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_IDENT, CTL_EOL); |
| 2237 | sysctl_createv(clog, 0, NULL, NULL, |
| 2238 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2239 | CTLTYPE_INT, "do_loopback_cksum" , |
| 2240 | SYSCTL_DESCR("Perform TCP checksum on loopback" ), |
| 2241 | NULL, 0, &tcp_do_loopback_cksum, 0, |
| 2242 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_LOOPBACKCKSUM, |
| 2243 | CTL_EOL); |
| 2244 | sysctl_createv(clog, 0, NULL, NULL, |
| 2245 | CTLFLAG_PERMANENT, |
| 2246 | CTLTYPE_STRUCT, "pcblist" , |
| 2247 | SYSCTL_DESCR("TCP protocol control block list" ), |
| 2248 | sysctl_inpcblist, 0, &tcbtable, 0, |
| 2249 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, |
| 2250 | CTL_EOL); |
| 2251 | sysctl_createv(clog, 0, NULL, NULL, |
| 2252 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2253 | CTLTYPE_INT, "keepinit" , |
| 2254 | SYSCTL_DESCR("Ticks before initial tcp connection times out" ), |
| 2255 | sysctl_tcp_keep, 0, &tcp_keepinit, 0, |
| 2256 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2257 | |
| 2258 | /* TCP socket buffers auto-sizing nodes */ |
| 2259 | sysctl_createv(clog, 0, NULL, NULL, |
| 2260 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2261 | CTLTYPE_INT, "recvbuf_auto" , |
| 2262 | SYSCTL_DESCR("Enable automatic receive " |
| 2263 | "buffer sizing (experimental)" ), |
| 2264 | NULL, 0, &tcp_do_autorcvbuf, 0, |
| 2265 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2266 | sysctl_createv(clog, 0, NULL, NULL, |
| 2267 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2268 | CTLTYPE_INT, "recvbuf_inc" , |
| 2269 | SYSCTL_DESCR("Incrementor step size of " |
| 2270 | "automatic receive buffer" ), |
| 2271 | NULL, 0, &tcp_autorcvbuf_inc, 0, |
| 2272 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2273 | sysctl_createv(clog, 0, NULL, NULL, |
| 2274 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2275 | CTLTYPE_INT, "recvbuf_max" , |
| 2276 | SYSCTL_DESCR("Max size of automatic receive buffer" ), |
| 2277 | NULL, 0, &tcp_autorcvbuf_max, 0, |
| 2278 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2279 | |
| 2280 | sysctl_createv(clog, 0, NULL, NULL, |
| 2281 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2282 | CTLTYPE_INT, "sendbuf_auto" , |
| 2283 | SYSCTL_DESCR("Enable automatic send " |
| 2284 | "buffer sizing (experimental)" ), |
| 2285 | NULL, 0, &tcp_do_autosndbuf, 0, |
| 2286 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2287 | sysctl_createv(clog, 0, NULL, NULL, |
| 2288 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2289 | CTLTYPE_INT, "sendbuf_inc" , |
| 2290 | SYSCTL_DESCR("Incrementor step size of " |
| 2291 | "automatic send buffer" ), |
| 2292 | NULL, 0, &tcp_autosndbuf_inc, 0, |
| 2293 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2294 | sysctl_createv(clog, 0, NULL, NULL, |
| 2295 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2296 | CTLTYPE_INT, "sendbuf_max" , |
| 2297 | SYSCTL_DESCR("Max size of automatic send buffer" ), |
| 2298 | NULL, 0, &tcp_autosndbuf_max, 0, |
| 2299 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2300 | |
| 2301 | /* ECN subtree */ |
| 2302 | sysctl_createv(clog, 0, NULL, &ecn_node, |
| 2303 | CTLFLAG_PERMANENT, |
| 2304 | CTLTYPE_NODE, "ecn" , |
| 2305 | SYSCTL_DESCR("RFC3168 Explicit Congestion Notification" ), |
| 2306 | NULL, 0, NULL, 0, |
| 2307 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2308 | sysctl_createv(clog, 0, &ecn_node, NULL, |
| 2309 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2310 | CTLTYPE_INT, "enable" , |
| 2311 | SYSCTL_DESCR("Enable TCP Explicit Congestion " |
| 2312 | "Notification" ), |
| 2313 | NULL, 0, &tcp_do_ecn, 0, CTL_CREATE, CTL_EOL); |
| 2314 | sysctl_createv(clog, 0, &ecn_node, NULL, |
| 2315 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2316 | CTLTYPE_INT, "maxretries" , |
| 2317 | SYSCTL_DESCR("Number of times to retry ECN setup " |
| 2318 | "before disabling ECN on the connection" ), |
| 2319 | NULL, 0, &tcp_ecn_maxretries, 0, CTL_CREATE, CTL_EOL); |
| 2320 | |
| 2321 | /* SACK gets its own little subtree. */ |
| 2322 | sysctl_createv(clog, 0, NULL, &sack_node, |
| 2323 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2324 | CTLTYPE_INT, "enable" , |
| 2325 | SYSCTL_DESCR("Enable RFC2018 Selective ACKnowledgement" ), |
| 2326 | NULL, 0, &tcp_do_sack, 0, |
| 2327 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); |
| 2328 | sysctl_createv(clog, 0, NULL, &sack_node, |
| 2329 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2330 | CTLTYPE_INT, "maxholes" , |
| 2331 | SYSCTL_DESCR("Maximum number of TCP SACK holes allowed per connection" ), |
| 2332 | NULL, 0, &tcp_sack_tp_maxholes, 0, |
| 2333 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); |
| 2334 | sysctl_createv(clog, 0, NULL, &sack_node, |
| 2335 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2336 | CTLTYPE_INT, "globalmaxholes" , |
| 2337 | SYSCTL_DESCR("Global maximum number of TCP SACK holes" ), |
| 2338 | NULL, 0, &tcp_sack_globalmaxholes, 0, |
| 2339 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); |
| 2340 | sysctl_createv(clog, 0, NULL, &sack_node, |
| 2341 | CTLFLAG_PERMANENT, |
| 2342 | CTLTYPE_INT, "globalholes" , |
| 2343 | SYSCTL_DESCR("Global number of TCP SACK holes" ), |
| 2344 | NULL, 0, &tcp_sack_globalholes, 0, |
| 2345 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); |
| 2346 | |
| 2347 | sysctl_createv(clog, 0, NULL, NULL, |
| 2348 | CTLFLAG_PERMANENT, |
| 2349 | CTLTYPE_STRUCT, "stats" , |
| 2350 | SYSCTL_DESCR("TCP statistics" ), |
| 2351 | sysctl_net_inet_tcp_stats, 0, NULL, 0, |
| 2352 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_STATS, |
| 2353 | CTL_EOL); |
| 2354 | sysctl_createv(clog, 0, NULL, NULL, |
| 2355 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2356 | CTLTYPE_INT, "local_by_rtt" , |
| 2357 | SYSCTL_DESCR("Use RTT estimator to decide which hosts " |
| 2358 | "are local" ), |
| 2359 | NULL, 0, &tcp_rttlocal, 0, |
| 2360 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2361 | #ifdef TCP_DEBUG |
| 2362 | sysctl_createv(clog, 0, NULL, NULL, |
| 2363 | CTLFLAG_PERMANENT, |
| 2364 | CTLTYPE_STRUCT, "debug" , |
| 2365 | SYSCTL_DESCR("TCP sockets debug information" ), |
| 2366 | NULL, 0, &tcp_debug, sizeof(tcp_debug), |
| 2367 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_DEBUG, |
| 2368 | CTL_EOL); |
| 2369 | sysctl_createv(clog, 0, NULL, NULL, |
| 2370 | CTLFLAG_PERMANENT, |
| 2371 | CTLTYPE_INT, "debx" , |
| 2372 | SYSCTL_DESCR("Number of TCP debug sockets messages" ), |
| 2373 | NULL, 0, &tcp_debx, sizeof(tcp_debx), |
| 2374 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_DEBX, |
| 2375 | CTL_EOL); |
| 2376 | #endif |
| 2377 | sysctl_createv(clog, 0, NULL, NULL, |
| 2378 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2379 | CTLTYPE_STRUCT, "drop" , |
| 2380 | SYSCTL_DESCR("TCP drop connection" ), |
| 2381 | sysctl_net_inet_tcp_drop, 0, NULL, 0, |
| 2382 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_DROP, CTL_EOL); |
| 2383 | sysctl_createv(clog, 0, NULL, NULL, |
| 2384 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2385 | CTLTYPE_INT, "iss_hash" , |
| 2386 | SYSCTL_DESCR("Enable RFC 1948 ISS by cryptographic " |
| 2387 | "hash computation" ), |
| 2388 | NULL, 0, &tcp_do_rfc1948, sizeof(tcp_do_rfc1948), |
| 2389 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, |
| 2390 | CTL_EOL); |
| 2391 | |
| 2392 | /* ABC subtree */ |
| 2393 | |
| 2394 | sysctl_createv(clog, 0, NULL, &abc_node, |
| 2395 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "abc" , |
| 2396 | SYSCTL_DESCR("RFC3465 Appropriate Byte Counting (ABC)" ), |
| 2397 | NULL, 0, NULL, 0, |
| 2398 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2399 | sysctl_createv(clog, 0, &abc_node, NULL, |
| 2400 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2401 | CTLTYPE_INT, "enable" , |
| 2402 | SYSCTL_DESCR("Enable RFC3465 Appropriate Byte Counting" ), |
| 2403 | NULL, 0, &tcp_do_abc, 0, CTL_CREATE, CTL_EOL); |
| 2404 | sysctl_createv(clog, 0, &abc_node, NULL, |
| 2405 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2406 | CTLTYPE_INT, "aggressive" , |
| 2407 | SYSCTL_DESCR("1: L=2*SMSS 0: L=1*SMSS" ), |
| 2408 | NULL, 0, &tcp_abc_aggressive, 0, CTL_CREATE, CTL_EOL); |
| 2409 | |
| 2410 | /* MSL tuning subtree */ |
| 2411 | |
| 2412 | sysctl_createv(clog, 0, NULL, &mslt_node, |
| 2413 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "mslt" , |
| 2414 | SYSCTL_DESCR("MSL Tuning for TIME_WAIT truncation" ), |
| 2415 | NULL, 0, NULL, 0, |
| 2416 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2417 | sysctl_createv(clog, 0, &mslt_node, NULL, |
| 2418 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2419 | CTLTYPE_INT, "enable" , |
| 2420 | SYSCTL_DESCR("Enable TIME_WAIT truncation" ), |
| 2421 | NULL, 0, &tcp_msl_enable, 0, CTL_CREATE, CTL_EOL); |
| 2422 | sysctl_createv(clog, 0, &mslt_node, NULL, |
| 2423 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2424 | CTLTYPE_INT, "loopback" , |
| 2425 | SYSCTL_DESCR("MSL value to use for loopback connections" ), |
| 2426 | NULL, 0, &tcp_msl_loop, 0, CTL_CREATE, CTL_EOL); |
| 2427 | sysctl_createv(clog, 0, &mslt_node, NULL, |
| 2428 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2429 | CTLTYPE_INT, "local" , |
| 2430 | SYSCTL_DESCR("MSL value to use for local connections" ), |
| 2431 | NULL, 0, &tcp_msl_local, 0, CTL_CREATE, CTL_EOL); |
| 2432 | sysctl_createv(clog, 0, &mslt_node, NULL, |
| 2433 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2434 | CTLTYPE_INT, "remote" , |
| 2435 | SYSCTL_DESCR("MSL value to use for remote connections" ), |
| 2436 | NULL, 0, &tcp_msl_remote, 0, CTL_CREATE, CTL_EOL); |
| 2437 | sysctl_createv(clog, 0, &mslt_node, NULL, |
| 2438 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2439 | CTLTYPE_INT, "remote_threshold" , |
| 2440 | SYSCTL_DESCR("RTT estimate value to promote local to remote" ), |
| 2441 | NULL, 0, &tcp_msl_remote_threshold, 0, CTL_CREATE, CTL_EOL); |
| 2442 | |
| 2443 | /* vestigial TIME_WAIT tuning subtree */ |
| 2444 | |
| 2445 | sysctl_createv(clog, 0, NULL, &vtw_node, |
| 2446 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "vtw" , |
| 2447 | SYSCTL_DESCR("Tuning for Vestigial TIME_WAIT" ), |
| 2448 | NULL, 0, NULL, 0, |
| 2449 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
| 2450 | sysctl_createv(clog, 0, &vtw_node, NULL, |
| 2451 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| 2452 | CTLTYPE_INT, "enable" , |
| 2453 | SYSCTL_DESCR("Enable Vestigial TIME_WAIT" ), |
| 2454 | sysctl_tcp_vtw_enable, 0, |
| 2455 | (pf == AF_INET) ? &tcp4_vtw_enable : &tcp6_vtw_enable, |
| 2456 | 0, CTL_CREATE, CTL_EOL); |
| 2457 | sysctl_createv(clog, 0, &vtw_node, NULL, |
| 2458 | CTLFLAG_PERMANENT|CTLFLAG_READONLY, |
| 2459 | CTLTYPE_INT, "entries" , |
| 2460 | SYSCTL_DESCR("Maximum number of vestigial TIME_WAIT entries" ), |
| 2461 | NULL, 0, &tcp_vtw_entries, 0, CTL_CREATE, CTL_EOL); |
| 2462 | } |
| 2463 | |
| 2464 | void |
| 2465 | tcp_usrreq_init(void) |
| 2466 | { |
| 2467 | |
| 2468 | #ifdef INET |
| 2469 | sysctl_net_inet_tcp_setup2(NULL, PF_INET, "inet" , "tcp" ); |
| 2470 | #endif |
| 2471 | #ifdef INET6 |
| 2472 | sysctl_net_inet_tcp_setup2(NULL, PF_INET6, "inet6" , "tcp6" ); |
| 2473 | #endif |
| 2474 | } |
| 2475 | |
| 2476 | PR_WRAP_USRREQS(tcp) |
| 2477 | #define tcp_attach tcp_attach_wrapper |
| 2478 | #define tcp_detach tcp_detach_wrapper |
| 2479 | #define tcp_accept tcp_accept_wrapper |
| 2480 | #define tcp_bind tcp_bind_wrapper |
| 2481 | #define tcp_listen tcp_listen_wrapper |
| 2482 | #define tcp_connect tcp_connect_wrapper |
| 2483 | #define tcp_connect2 tcp_connect2_wrapper |
| 2484 | #define tcp_disconnect tcp_disconnect_wrapper |
| 2485 | #define tcp_shutdown tcp_shutdown_wrapper |
| 2486 | #define tcp_abort tcp_abort_wrapper |
| 2487 | #define tcp_ioctl tcp_ioctl_wrapper |
| 2488 | #define tcp_stat tcp_stat_wrapper |
| 2489 | #define tcp_peeraddr tcp_peeraddr_wrapper |
| 2490 | #define tcp_sockaddr tcp_sockaddr_wrapper |
| 2491 | #define tcp_rcvd tcp_rcvd_wrapper |
| 2492 | #define tcp_recvoob tcp_recvoob_wrapper |
| 2493 | #define tcp_send tcp_send_wrapper |
| 2494 | #define tcp_sendoob tcp_sendoob_wrapper |
| 2495 | #define tcp_purgeif tcp_purgeif_wrapper |
| 2496 | |
| 2497 | const struct pr_usrreqs tcp_usrreqs = { |
| 2498 | .pr_attach = tcp_attach, |
| 2499 | .pr_detach = tcp_detach, |
| 2500 | .pr_accept = tcp_accept, |
| 2501 | .pr_bind = tcp_bind, |
| 2502 | .pr_listen = tcp_listen, |
| 2503 | .pr_connect = tcp_connect, |
| 2504 | .pr_connect2 = tcp_connect2, |
| 2505 | .pr_disconnect = tcp_disconnect, |
| 2506 | .pr_shutdown = tcp_shutdown, |
| 2507 | .pr_abort = tcp_abort, |
| 2508 | .pr_ioctl = tcp_ioctl, |
| 2509 | .pr_stat = tcp_stat, |
| 2510 | .pr_peeraddr = tcp_peeraddr, |
| 2511 | .pr_sockaddr = tcp_sockaddr, |
| 2512 | .pr_rcvd = tcp_rcvd, |
| 2513 | .pr_recvoob = tcp_recvoob, |
| 2514 | .pr_send = tcp_send, |
| 2515 | .pr_sendoob = tcp_sendoob, |
| 2516 | .pr_purgeif = tcp_purgeif, |
| 2517 | }; |
| 2518 | |