in6_proto.c revision 1.9
1 /* $NetBSD: in6_proto.c,v 1.9 1999/12/13 15:17:22 itojun 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) 1982, 1986, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)in_proto.c 8.1 (Berkeley) 6/10/93 65 */ 66 67 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__) 68 #include "opt_inet.h" 69 #ifdef __NetBSD__ /*XXX*/ 70 #include "opt_ipsec.h" 71 #endif 72 #endif 73 74 #include <sys/param.h> 75 #include <sys/socket.h> 76 #if defined(__FreeBSD__) 77 #include <sys/socketvar.h> 78 #endif 79 #include <sys/protosw.h> 80 #include <sys/kernel.h> 81 #include <sys/domain.h> 82 #include <sys/mbuf.h> 83 #ifdef __FreeBSD__ 84 #include <sys/systm.h> 85 #include <sys/sysctl.h> 86 #endif 87 88 #include <net/if.h> 89 #include <net/radix.h> 90 #include <net/route.h> 91 92 #include <netinet/in.h> 93 #include <netinet/in_systm.h> 94 #include <netinet/in_var.h> 95 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || (defined(__NetBSD__) && !defined(TCP6)) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 96 #include <netinet/ip.h> 97 #include <netinet/ip_var.h> 98 #endif 99 #if (defined(__NetBSD__) && !defined(TCP6)) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 100 #include <netinet/in_pcb.h> 101 #endif 102 #include <netinet6/ip6.h> 103 #include <netinet6/ip6_var.h> 104 #include <netinet6/icmp6.h> 105 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__OpenBSD__) && !(defined(__bsdi__) && _BSDI_VERSION >= 199802) 106 #include <netinet6/in6_pcb.h> 107 #endif 108 109 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 110 #include <netinet/tcp.h> 111 #include <netinet/tcp_timer.h> 112 #include <netinet/tcp_var.h> 113 #include <netinet/udp.h> 114 #include <netinet/udp_var.h> 115 #else 116 #if defined(__NetBSD__) && !defined(TCP6) 117 #include <netinet/tcp.h> 118 #include <netinet/tcp_fsm.h> 119 #include <netinet/tcp_seq.h> 120 #include <netinet/tcp_timer.h> 121 #include <netinet/tcp_var.h> 122 #include <netinet/tcpip.h> 123 #include <netinet/tcp_debug.h> 124 #else 125 #include <netinet6/tcp6.h> 126 #include <netinet6/tcp6_fsm.h> 127 #include <netinet6/tcp6_seq.h> 128 #include <netinet6/tcp6_timer.h> 129 #include <netinet6/tcp6_var.h> 130 #endif 131 #endif 132 133 #if !defined(__OpenBSD__) && !(defined(__bsdi__) && _BSDI_VERSION >= 199802) 134 #include <netinet6/udp6.h> 135 #include <netinet6/udp6_var.h> 136 #endif 137 138 #include <netinet6/pim6_var.h> 139 140 #include <netinet6/nd6.h> 141 #ifdef __FreeBSD__ 142 #include <netinet6/in6_prefix.h> 143 #endif 144 145 #ifdef __OpenBSD__ /*KAME IPSEC*/ 146 #undef IPSEC 147 #endif 148 149 #ifdef IPSEC 150 #include <netinet6/ipsec.h> 151 #include <netinet6/ah.h> 152 #ifdef IPSEC_ESP 153 #include <netinet6/esp.h> 154 #endif 155 #include <netinet6/ipcomp.h> 156 #endif /*IPSEC*/ 157 158 #include <netinet6/ip6protosw.h> 159 160 #include "gif.h" 161 #if NGIF > 0 162 #include <netinet6/in6_gif.h> 163 #endif 164 165 #include <net/net_osdep.h> 166 167 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 168 169 /* 170 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. 171 */ 172 173 extern struct domain inet6domain; 174 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 175 static struct pr_usrreqs nousrreqs; 176 #endif 177 178 struct ip6protosw inet6sw[] = { 179 { 0, &inet6domain, IPPROTO_IPV6, 0, 180 0, 0, 0, 0, 181 0, 182 ip6_init, 0, frag6_slowtimo, frag6_drain, 183 #ifndef __FreeBSD__ 184 ip6_sysctl, 185 #else 186 # if __FreeBSD__ >= 3 187 &nousrreqs, 188 # endif 189 #endif 190 }, 191 { SOCK_DGRAM, &inet6domain, IPPROTO_UDP, PR_ATOMIC | PR_ADDR, 192 udp6_input, 0, udp6_ctlinput, ip6_ctloutput, 193 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 194 0, 0, 195 #elif defined(HAVE_NRL_INPCB) 196 udp6_usrreq, 0, 197 #else 198 udp6_usrreq, udp6_init, 199 #endif 200 0, 0, 0, 201 #ifndef __FreeBSD__ 202 #ifdef HAVE_NRL_INPCB 203 udp_sysctl, 204 #else 205 udp6_sysctl, 206 #endif 207 #else 208 # if __FreeBSD__ >= 3 209 &udp6_usrreqs, 210 # endif 211 #endif 212 }, 213 #ifdef TCP6 214 { SOCK_STREAM, &inet6domain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN, 215 tcp6_input, 0, tcp6_ctlinput, tcp6_ctloutput, 216 tcp6_usrreq, 217 tcp6_init, tcp6_fasttimo, tcp6_slowtimo, tcp6_drain, 218 #ifndef __FreeBSD__ 219 tcp6_sysctl, 220 #else 221 # if __FreeBSD__ >= 3 222 &tcp6_usrreqs, 223 # endif 224 #endif 225 }, 226 #else 227 { SOCK_STREAM, &inet6domain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN, 228 tcp6_input, 0, tcp6_ctlinput, tcp_ctloutput, 229 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 230 0, 231 #elif defined(HAVE_NRL_INPCB) 232 tcp6_usrreq, 233 #else 234 tcp_usrreq, 235 #endif 236 #ifdef INET /* don't call timeout routines twice */ 237 tcp_init, 0, 0, tcp_drain, 238 #else 239 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 240 #endif 241 #ifndef __FreeBSD__ 242 tcp_sysctl, 243 #else 244 # if __FreeBSD__ >= 3 245 &tcp6_usrreqs, 246 # endif 247 #endif 248 }, 249 #endif /*TCP6*/ 250 { SOCK_RAW, &inet6domain, IPPROTO_RAW, PR_ATOMIC | PR_ADDR, 251 rip6_input, rip6_output, 0, rip6_ctloutput, 252 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 253 0, 254 #else 255 rip6_usrreq, 256 #endif 257 0, 0, 0, 0, 258 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 259 &rip6_usrreqs 260 #endif 261 }, 262 { SOCK_RAW, &inet6domain, IPPROTO_ICMPV6, PR_ATOMIC | PR_ADDR, 263 icmp6_input, rip6_output, 0, rip6_ctloutput, 264 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 265 0, 266 #else 267 rip6_usrreq, 268 #endif 269 icmp6_init, icmp6_fasttimo, 0, 0, 270 #ifndef __FreeBSD__ 271 icmp6_sysctl, 272 #else 273 # if __FreeBSD__ >= 3 274 &rip6_usrreqs 275 # endif 276 #endif 277 }, 278 { SOCK_RAW, &inet6domain, IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR, 279 dest6_input, 0, 0, 0, 280 0, 281 0, 0, 0, 0, 282 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 283 &nousrreqs 284 #endif 285 }, 286 { SOCK_RAW, &inet6domain, IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR, 287 route6_input, 0, 0, 0, 288 0, 289 0, 0, 0, 0, 290 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 291 &nousrreqs 292 #endif 293 }, 294 { SOCK_RAW, &inet6domain, IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR, 295 frag6_input, 0, 0, 0, 296 0, 297 0, 0, 0, 0, 298 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 299 &nousrreqs 300 #endif 301 }, 302 #ifdef IPSEC 303 { SOCK_RAW, &inet6domain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 304 ah6_input, 0, 0, 0, 305 0, 306 0, 0, 0, 0, 307 #ifndef __FreeBSD__ 308 ipsec6_sysctl, 309 #else 310 # if __FreeBSD__ >= 3 311 &nousrreqs, 312 # endif 313 #endif 314 }, 315 #ifdef IPSEC_ESP 316 { SOCK_RAW, &inet6domain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 317 esp6_input, 0, 0, 0, 318 0, 319 0, 0, 0, 0, 320 #ifndef __FreeBSD__ 321 ipsec6_sysctl, 322 #else 323 # if __FreeBSD__ >= 3 324 &nousrreqs, 325 # endif 326 #endif 327 }, 328 #endif 329 { SOCK_RAW, &inet6domain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 330 ipcomp6_input, 0, 0, 0, 331 0, 332 0, 0, 0, 0, 333 #ifndef __FreeBSD__ 334 ipsec6_sysctl, 335 #else 336 # if __FreeBSD__ >= 3 337 &nousrreqs, 338 # endif 339 #endif 340 }, 341 #endif /* IPSEC */ 342 #if NGIF > 0 343 { SOCK_RAW, &inet6domain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, 344 in6_gif_input,0, 0, 0, 345 0, 346 0, 0, 0, 0, 347 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 348 &nousrreqs 349 #endif 350 }, 351 #ifdef INET6 352 { SOCK_RAW, &inet6domain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, 353 in6_gif_input,0, 0, 0, 354 0, 355 0, 0, 0, 0, 356 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 357 &nousrreqs 358 #endif 359 }, 360 #endif /* INET6 */ 361 #endif /* GIF */ 362 { SOCK_RAW, &inet6domain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR, 363 pim6_input, rip6_output, 0, rip6_ctloutput, 364 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 365 0, 366 #else 367 rip6_usrreq, 368 #endif 369 0, 0, 0, 0, 370 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 371 &rip6_usrreqs 372 # endif 373 }, 374 /* raw wildcard */ 375 { SOCK_RAW, &inet6domain, 0, PR_ATOMIC | PR_ADDR, 376 rip6_input, rip6_output, 0, rip6_ctloutput, 377 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 378 0, 0, 379 #else 380 rip6_usrreq, rip6_init, 381 #endif 382 0, 0, 0, 383 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 384 &rip6_usrreqs 385 #endif 386 }, 387 }; 388 389 #ifdef __FreeBSD__ 390 extern int in6_inithead __P((void **, int)); 391 #endif 392 393 struct domain inet6domain = 394 { AF_INET6, "internet6", 0, 0, 0, 395 (struct protosw *)inet6sw, 396 (struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])], 0, 397 #ifdef __FreeBSD__ 398 in6_inithead, 399 #else 400 rn_inithead, 401 #endif 402 offsetof(struct sockaddr_in6, sin6_addr) << 3, 403 sizeof(struct sockaddr_in6) }; 404 405 #ifdef __FreeBSD__ 406 DOMAIN_SET(inet6); 407 #endif 408 409 /* 410 * Internet configuration info 411 */ 412 #ifndef IPV6FORWARDING 413 #ifdef GATEWAY6 414 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 415 #else 416 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 417 #endif /* GATEWAY6 */ 418 #endif /* !IPV6FORWARDING */ 419 420 #ifndef IPV6_SENDREDIRECTS 421 #define IPV6_SENDREDIRECTS 1 422 #endif 423 424 int ip6_forwarding = IPV6FORWARDING; /* act as router? */ 425 int ip6_sendredirects = IPV6_SENDREDIRECTS; 426 int ip6_defhlim = IPV6_DEFHLIM; 427 int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS; 428 int ip6_accept_rtadv = 0; /* "IPV6FORWARDING ? 0 : 1" is dangerous */ 429 int ip6_maxfragpackets = 200; 430 int ip6_log_interval = 5; 431 int ip6_hdrnestlimit = 50; /* appropriate? */ 432 int ip6_dad_count = 1; /* DupAddrDetectionTransmits */ 433 u_int32_t ip6_flow_seq; 434 int ip6_auto_flowlabel = 1; 435 #if NGIF > 0 436 int ip6_gif_hlim = GIF_HLIM; 437 #else 438 int ip6_gif_hlim = 0; 439 #endif 440 int ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */ 441 int ip6_rr_prune = 5; /* router renumbering prefix 442 * walk list every 5 sec. */ 443 u_int32_t ip6_id = 0UL; 444 int ip6_keepfaith = 0; 445 time_t ip6_log_time = (time_t)0L; 446 447 /* icmp6 */ 448 #ifndef __bsdi__ 449 /* 450 * BSDI4 defines these variables in in_proto.c... 451 * XXX: what if we don't define INET? Should we define pmtu6_expire 452 * or so? (jinmei (at) kame.net 19990310) 453 */ 454 int pmtu_expire = 60*10; 455 int pmtu_probe = 60*2; 456 #endif 457 458 /* raw IP6 parameters */ 459 /* 460 * Nominal space allocated to a raw ip socket. 461 */ 462 #define RIPV6SNDQ 8192 463 #define RIPV6RCVQ 8192 464 465 u_long rip6_sendspace = RIPV6SNDQ; 466 u_long rip6_recvspace = RIPV6RCVQ; 467 468 /* ICMPV6 parameters */ 469 int icmp6_rediraccept = 1; /* accept and process redirects */ 470 int icmp6_redirtimeout = 10 * 60; /* 10 minutes */ 471 u_int icmp6errratelim = 1000; /* 1000usec = 1msec */ 472 473 #ifdef TCP6 474 /* TCP on IP6 parameters */ 475 int tcp6_sendspace = 1024 * 8; 476 int tcp6_recvspace = 1024 * 8; 477 int tcp6_mssdflt = TCP6_MSS; 478 int tcp6_rttdflt = TCP6TV_SRTTDFLT / PR_SLOWHZ; 479 int tcp6_do_rfc1323 = 1; 480 int tcp6_conntimeo = TCP6TV_KEEP_INIT; /* initial connection timeout */ 481 int tcp6_43maxseg = 0; 482 int tcp6_pmtu = 0; 483 484 /* 485 * Parameters for keepalive option. 486 * Connections for which SO_KEEPALIVE is set will be probed 487 * after being idle for a time of tcp6_keepidle (in units of PR_SLOWHZ). 488 * Starting at that time, the connection is probed at intervals 489 * of tcp6_keepintvl (same units) until a response is received 490 * or until tcp6_keepcnt probes have been made, at which time 491 * the connection is dropped. Note that a tcp6_keepidle value 492 * under 2 hours is nonconformant with RFC-1122, Internet Host Requirements. 493 */ 494 int tcp6_keepidle = TCP6TV_KEEP_IDLE; /* time before probing idle */ 495 int tcp6_keepintvl = TCP6TV_KEEPINTVL; /* interval betwn idle probes */ 496 int tcp6_keepcnt = TCP6TV_KEEPCNT; /* max idle probes */ 497 int tcp6_maxpersistidle = TCP6TV_KEEP_IDLE; /* max idle time in persist */ 498 499 #ifndef INET_SERVER 500 #define TCP6_LISTEN_HASH_SIZE 17 501 #define TCP6_CONN_HASH_SIZE 97 502 #define TCP6_SYN_HASH_SIZE 293 503 #define TCP6_SYN_BUCKET_SIZE 35 504 #else 505 #define TCP6_LISTEN_HASH_SIZE 97 506 #define TCP6_CONN_HASH_SIZE 9973 507 #define TCP6_SYN_HASH_SIZE 997 508 #define TCP6_SYN_BUCKET_SIZE 35 509 #endif 510 int tcp6_listen_hash_size = TCP6_LISTEN_HASH_SIZE; 511 int tcp6_conn_hash_size = TCP6_CONN_HASH_SIZE; 512 struct tcp6_hash_list tcp6_listen_hash[TCP6_LISTEN_HASH_SIZE], 513 tcp6_conn_hash[TCP6_CONN_HASH_SIZE]; 514 515 int tcp6_syn_cache_size = TCP6_SYN_HASH_SIZE; 516 int tcp6_syn_cache_limit = TCP6_SYN_HASH_SIZE*TCP6_SYN_BUCKET_SIZE; 517 int tcp6_syn_bucket_limit = 3*TCP6_SYN_BUCKET_SIZE; 518 struct syn_cache_head6 tcp6_syn_cache[TCP6_SYN_HASH_SIZE]; 519 struct syn_cache_head6 *tcp6_syn_cache_first; 520 int tcp6_syn_cache_interval = 8; /* runs timer every 4 seconds */ 521 int tcp6_syn_cache_timeo = TCP6TV_KEEP_INIT; 522 523 /* 524 * Parameters for computing a desirable data segment size 525 * given an upper bound (either interface MTU, or peer's MSS option)_. 526 * As applications tend to use a buffer size that is a multiple 527 * of kilobytes, try for something that divides evenly. However, 528 * do not round down too much. 529 * 530 * Round segment size down to a multiple of TCP6_ROUNDSIZE if this 531 * does not result in lowering by more than (size/TCP6_ROUNDFRAC). 532 * For example, round 536 to 512. Older versions of the system 533 * effectively used MCLBYTES (1K or 2K) as TCP6_ROUNDSIZE, with 534 * a value of 1 for TCP6_ROUNDFRAC (eliminating its effect). 535 * We round to a multiple of 256 for SLIP. 536 */ 537 #ifndef TCP6_ROUNDSIZE 538 #define TCP6_ROUNDSIZE 256 /* round to multiple of 256 */ 539 #endif 540 #ifndef TCP6_ROUNDFRAC 541 #define TCP6_ROUNDFRAC 10 /* round down at most N/10, or 10% */ 542 #endif 543 544 int tcp6_roundsize = TCP6_ROUNDSIZE; 545 int tcp6_roundfrac = TCP6_ROUNDFRAC; 546 #endif /*TCP6*/ 547 548 /* UDP on IP6 parameters */ 549 int udp6_sendspace = 9216; /* really max datagram size */ 550 int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6)); 551 /* 40 1K datagrams */ 552 553 #ifdef __FreeBSD__ 554 /* 555 * sysctl related items. 556 */ 557 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, 558 "Internet6 Family"); 559 560 /* net.inet6 */ 561 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); 562 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); 563 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); 564 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); 565 #ifdef IPSEC 566 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); 567 #endif /* IPSEC */ 568 569 /* net.inet6.ip6 */ 570 static int 571 sysctl_ip6_forwarding SYSCTL_HANDLER_ARGS 572 { 573 int error = 0; 574 int old_ip6_forwarding; 575 int changed; 576 577 error = SYSCTL_OUT(req, arg1, sizeof(int)); 578 if (error || !req->newptr) 579 return (error); 580 old_ip6_forwarding = ip6_forwarding; 581 error = SYSCTL_IN(req, arg1, sizeof(int)); 582 if (error != 0) 583 return (error); 584 changed = (ip6_forwarding ? 1 : 0) ^ (old_ip6_forwarding ? 1 : 0); 585 if (changed == 0) 586 return (error); 587 if (ip6_forwarding != 0) { /* host becomes router */ 588 int s = splnet(); 589 struct nd_prefix *pr, *next; 590 591 for (pr = nd_prefix.lh_first; pr; pr = next) { 592 next = pr->ndpr_next; 593 if (!IN6_IS_ADDR_UNSPECIFIED(&pr->ndpr_addr)) 594 in6_ifdel(pr->ndpr_ifp, &pr->ndpr_addr); 595 prelist_remove(pr); 596 } 597 splx(s); 598 } else { /* router becomes host */ 599 struct socket so; 600 601 /* XXX: init dummy so */ 602 bzero(&so, sizeof(so)); 603 while(!LIST_EMPTY(&rr_prefix)) 604 delete_each_prefix(&so, LIST_FIRST(&rr_prefix), 605 PR_ORIG_KERNEL); 606 } 607 608 return (error); 609 } 610 611 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, 612 CTLTYPE_INT|CTLFLAG_RW, &ip6_forwarding, 0, sysctl_ip6_forwarding, 613 "I", ""); 614 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, 615 redirect, CTLFLAG_RW, &ip6_sendredirects, 0, ""); 616 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, 617 hlim, CTLFLAG_RW, &ip6_defhlim, 0, ""); 618 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, 619 maxfragpackets, CTLFLAG_RW, &ip6_maxfragpackets, 0, ""); 620 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, 621 accept_rtadv, CTLFLAG_RW, &ip6_accept_rtadv, 0, ""); 622 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH, 623 keepfaith, CTLFLAG_RW, &ip6_keepfaith, 0, ""); 624 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, 625 log_interval, CTLFLAG_RW, &ip6_log_interval, 0, ""); 626 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, 627 hdrnestlimit, CTLFLAG_RW, &ip6_hdrnestlimit, 0, ""); 628 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, 629 dad_count, CTLFLAG_RW, &ip6_dad_count, 0, ""); 630 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, 631 auto_flowlabel, CTLFLAG_RW, &ip6_auto_flowlabel, 0, ""); 632 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, 633 defmcasthlim, CTLFLAG_RW, &ip6_defmcasthlim, 0, ""); 634 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM, 635 gifhlim, CTLFLAG_RW, &ip6_gif_hlim, 0, ""); 636 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, 637 kame_version, CTLFLAG_RD, __KAME_VERSION, 0, ""); 638 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, 639 use_deprecated, CTLFLAG_RW, &ip6_use_deprecated, 0, ""); 640 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, 641 rr_prune, CTLFLAG_RW, &ip6_rr_prune, 0, ""); 642 643 /* net.inet6.icmp6 */ 644 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, 645 rediraccept, CTLFLAG_RW, &icmp6_rediraccept, 0, ""); 646 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, 647 redirtimeout, CTLFLAG_RW, &icmp6_redirtimeout, 0, ""); 648 SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD, 649 &icmp6stat, icmp6stat, ""); 650 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRRATELIMIT, 651 errratelimit, CTLFLAG_RW, &icmp6errratelim, 0, ""); 652 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, 653 nd6_prune, CTLFLAG_RW, &nd6_prune, 0, ""); 654 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, 655 nd6_delay, CTLFLAG_RW, &nd6_delay, 0, ""); 656 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, 657 nd6_umaxtries, CTLFLAG_RW, &nd6_umaxtries, 0, ""); 658 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, 659 nd6_mmaxtries, CTLFLAG_RW, &nd6_mmaxtries, 0, ""); 660 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, 661 nd6_useloopback, CTLFLAG_RW, &nd6_useloopback, 0, ""); 662 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PROXYALL, 663 nd6_proxyall, CTLFLAG_RW, &nd6_proxyall, 0, ""); 664 665 #if __FreeBSD__ < 3 666 /* net.inet6.udp6 */ 667 SYSCTL_INT(_net_inet6_udp6, UDP6CTL_SENDMAX, 668 sendmax, CTLFLAG_RW, &udp6_sendspace, 0, ""); 669 SYSCTL_INT(_net_inet6_udp6, UDP6CTL_RECVSPACE, 670 recvspace, CTLFLAG_RW, &udp6_recvspace, 0, ""); 671 672 /* net.inet6.tcp6 */ 673 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_MSSDFLT, 674 mssdflt, CTLFLAG_RW, &tcp6_mssdflt, 0, ""); 675 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_DO_RFC1323, 676 do_rfc1323, CTLFLAG_RW, &tcp6_do_rfc1323, 0, ""); 677 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_KEEPIDLE, 678 keepidle, CTLFLAG_RW, &tcp6_keepidle, 0, ""); 679 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_KEEPINTVL, 680 keepintvl, CTLFLAG_RW, &tcp6_keepintvl, 0, ""); 681 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_KEEPCNT, 682 keepcnt, CTLFLAG_RW, &tcp6_keepcnt, 0, ""); 683 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_MAXPERSISTIDLE, 684 maxpersistidle, CTLFLAG_RW, &tcp6_maxpersistidle, 0, ""); 685 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_SENDSPACE, 686 sendspace, CTLFLAG_RW, &tcp6_sendspace, 0, ""); 687 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_RECVSPACE, 688 recvspace, CTLFLAG_RW, &tcp6_recvspace, 0, ""); 689 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_CONNTIMEO, 690 conntimeo, CTLFLAG_RW, &tcp6_conntimeo, 0, ""); 691 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_PMTU, 692 pmtu, CTLFLAG_RW, &tcp6_pmtu, 0, ""); 693 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_PMTU_EXPIRE, 694 pmtu_expire, CTLFLAG_RW, &pmtu_expire, 0, ""); 695 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_PMTU_PROBE, 696 pmtu_probe, CTLFLAG_RW, &pmtu_probe, 0, ""); 697 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_43MAXSEG, 698 pmtu_43maxseg, CTLFLAG_RW, &tcp6_43maxseg, 0, ""); 699 SYSCTL_STRUCT(_net_inet6_tcp6, TCP6CTL_STATS, stats, CTLFLAG_RD, 700 &tcp6stat, tcp6stat, ""); 701 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_SYN_CACHE_LIMIT, 702 syn_cache_limit, CTLFLAG_RW, &tcp6_syn_cache_limit, 0, ""); 703 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_SYN_BUCKET_LIMIT, 704 syn_bucket_limit, CTLFLAG_RW, &tcp6_syn_bucket_limit, 0, ""); 705 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_SYN_CACHE_INTER, 706 syn_cache_interval, CTLFLAG_RW, &tcp6_syn_cache_interval, 0, ""); 707 #endif /* !(defined(__FreeBSD__) && __FreeBSD__ >= 3) */ 708 709 #endif /* __FreeBSD__ */ 710
Indexes created Thu Sep 25 08:09:54 GMT 2025