in6_proto.c revision 1.1.2.3
1 /* 2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the project nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /* 31 * Copyright (c) 1982, 1986, 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by the University of 45 * California, Berkeley and its contributors. 46 * 4. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)in_proto.c 8.1 (Berkeley) 6/10/93 63 */ 64 65 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__) 66 #include "opt_inet.h" 67 #ifdef __NetBSD__ /*XXX*/ 68 #include "opt_ipsec.h" 69 #endif 70 #endif 71 72 #include <sys/param.h> 73 #include <sys/socket.h> 74 #if defined(__FreeBSD__) 75 #include <sys/socketvar.h> 76 #endif 77 #include <sys/protosw.h> 78 #include <sys/kernel.h> 79 #include <sys/domain.h> 80 #include <sys/mbuf.h> 81 #ifdef __FreeBSD__ 82 #include <sys/systm.h> 83 #include <sys/sysctl.h> 84 #endif 85 86 #include <net/if.h> 87 #include <net/radix.h> 88 #include <net/route.h> 89 90 #include <netinet/in.h> 91 #include <netinet/in_systm.h> 92 #include <netinet/in_var.h> 93 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || (defined(__NetBSD__) && !defined(TCP6)) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 94 #include <netinet/ip.h> 95 #include <netinet/ip_var.h> 96 #endif 97 #if (defined(__NetBSD__) && !defined(TCP6)) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 98 #include <netinet/in_pcb.h> 99 #endif 100 #include <netinet6/ip6.h> 101 #include <netinet6/ip6_var.h> 102 #include <netinet6/icmp6.h> 103 #if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__OpenBSD__) && !(defined(__bsdi__) && _BSDI_VERSION >= 199802) 104 #include <netinet6/in6_pcb.h> 105 #endif 106 107 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) 108 #include <netinet/tcp.h> 109 #include <netinet/tcp_timer.h> 110 #include <netinet/tcp_var.h> 111 #include <netinet/udp.h> 112 #include <netinet/udp_var.h> 113 #else 114 #if defined(__NetBSD__) && !defined(TCP6) 115 #include <netinet/tcp.h> 116 #include <netinet/tcp_fsm.h> 117 #include <netinet/tcp_seq.h> 118 #include <netinet/tcp_timer.h> 119 #include <netinet/tcp_var.h> 120 #include <netinet/tcpip.h> 121 #include <netinet/tcp_debug.h> 122 #else 123 #include <netinet6/tcp6.h> 124 #include <netinet6/tcp6_fsm.h> 125 #include <netinet6/tcp6_seq.h> 126 #include <netinet6/tcp6_timer.h> 127 #include <netinet6/tcp6_var.h> 128 #endif 129 #endif 130 131 #if !defined(__OpenBSD__) && !(defined(__bsdi__) && _BSDI_VERSION >= 199802) 132 #include <netinet6/udp6.h> 133 #include <netinet6/udp6_var.h> 134 #endif 135 136 #include <netinet6/pim6_var.h> 137 138 #include <netinet6/nd6.h> 139 #ifdef __FreeBSD__ 140 #include <netinet6/in6_prefix.h> 141 #endif 142 143 #ifdef __OpenBSD__ /*KAME IPSEC*/ 144 #undef IPSEC 145 #endif 146 147 #ifdef IPSEC 148 #include <netinet6/ipsec.h> 149 #include <netinet6/ah.h> 150 #ifdef IPSEC_ESP 151 #include <netinet6/esp.h> 152 #endif 153 #include <netinet6/ipcomp.h> 154 #endif /*IPSEC*/ 155 156 #include <netinet6/ip6protosw.h> 157 158 #include "gif.h" 159 #if NGIF > 0 160 #include <netinet6/in6_gif.h> 161 #endif 162 163 #include <net/net_osdep.h> 164 165 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 166 167 /* 168 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. 169 */ 170 171 extern struct domain inet6domain; 172 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 173 static struct pr_usrreqs nousrreqs; 174 #endif 175 176 struct ip6protosw inet6sw[] = { 177 { 0, &inet6domain, IPPROTO_IPV6, 0, 178 0, 0, 0, 0, 179 0, 180 ip6_init, 0, frag6_slowtimo, frag6_drain, 181 #ifndef __FreeBSD__ 182 ip6_sysctl, 183 #else 184 # if __FreeBSD__ >= 3 185 &nousrreqs, 186 # endif 187 #endif 188 }, 189 { SOCK_DGRAM, &inet6domain, IPPROTO_UDP, PR_ATOMIC | PR_ADDR, 190 udp6_input, 0, udp6_ctlinput, ip6_ctloutput, 191 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 192 0, 0, 193 #elif defined(HAVE_NRL_INPCB) 194 udp6_usrreq, 0, 195 #else 196 udp6_usrreq, udp6_init, 197 #endif 198 0, 0, 0, 199 #ifndef __FreeBSD__ 200 #ifdef HAVE_NRL_INPCB 201 udp_sysctl, 202 #else 203 udp6_sysctl, 204 #endif 205 #else 206 # if __FreeBSD__ >= 3 207 &udp6_usrreqs, 208 # endif 209 #endif 210 }, 211 #ifdef TCP6 212 { SOCK_STREAM, &inet6domain, IPPROTO_TCP, PR_CONNREQUIRED | PR_WANTRCVD, 213 tcp6_input, 0, tcp6_ctlinput, tcp6_ctloutput, 214 tcp6_usrreq, 215 tcp6_init, tcp6_fasttimo, tcp6_slowtimo, tcp6_drain, 216 #ifndef __FreeBSD__ 217 tcp6_sysctl, 218 #else 219 # if __FreeBSD__ >= 3 220 &tcp6_usrreqs, 221 # endif 222 #endif 223 }, 224 #else 225 { SOCK_STREAM, &inet6domain, IPPROTO_TCP, PR_CONNREQUIRED | PR_WANTRCVD, 226 tcp6_input, 0, tcp6_ctlinput, tcp_ctloutput, 227 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 228 0, 229 #elif defined(HAVE_NRL_INPCB) 230 tcp6_usrreq, 231 #else 232 tcp_usrreq, 233 #endif 234 #ifdef INET /* don't call timeout routines twice */ 235 tcp_init, 0, 0, tcp_drain, 236 #else 237 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 238 #endif 239 #ifndef __FreeBSD__ 240 tcp_sysctl, 241 #else 242 # if __FreeBSD__ >= 3 243 &tcp6_usrreqs, 244 # endif 245 #endif 246 }, 247 #endif /*TCP6*/ 248 { SOCK_RAW, &inet6domain, IPPROTO_RAW, PR_ATOMIC | PR_ADDR, 249 rip6_input, rip6_output, 0, rip6_ctloutput, 250 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 251 0, 252 #else 253 rip6_usrreq, 254 #endif 255 0, 0, 0, 0, 256 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 257 &rip6_usrreqs 258 #endif 259 }, 260 { SOCK_RAW, &inet6domain, IPPROTO_ICMPV6, PR_ATOMIC | PR_ADDR, 261 icmp6_input, rip6_output, 0, rip6_ctloutput, 262 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 263 0, 264 #else 265 rip6_usrreq, 266 #endif 267 icmp6_init, icmp6_fasttimo, 0, 0, 268 #ifndef __FreeBSD__ 269 icmp6_sysctl, 270 #else 271 # if __FreeBSD__ >= 3 272 &rip6_usrreqs 273 # endif 274 #endif 275 }, 276 { SOCK_RAW, &inet6domain, IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR, 277 dest6_input, 0, 0, 0, 278 0, 279 0, 0, 0, 0, 280 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 281 &nousrreqs 282 #endif 283 }, 284 { SOCK_RAW, &inet6domain, IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR, 285 route6_input, 0, 0, 0, 286 0, 287 0, 0, 0, 0, 288 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 289 &nousrreqs 290 #endif 291 }, 292 { SOCK_RAW, &inet6domain, IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR, 293 frag6_input, 0, 0, 0, 294 0, 295 0, 0, 0, 0, 296 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 297 &nousrreqs 298 #endif 299 }, 300 #ifdef IPSEC 301 { SOCK_RAW, &inet6domain, IPPROTO_AH, PR_ATOMIC|PR_ADDR, 302 ah6_input, 0, 0, 0, 303 0, 304 0, 0, 0, 0, 305 #ifndef __FreeBSD__ 306 ipsec6_sysctl, 307 #else 308 # if __FreeBSD__ >= 3 309 &nousrreqs, 310 # endif 311 #endif 312 }, 313 #ifdef IPSEC_ESP 314 { SOCK_RAW, &inet6domain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR, 315 esp6_input, 0, 0, 0, 316 0, 317 0, 0, 0, 0, 318 #ifndef __FreeBSD__ 319 ipsec6_sysctl, 320 #else 321 # if __FreeBSD__ >= 3 322 &nousrreqs, 323 # endif 324 #endif 325 }, 326 #endif 327 { SOCK_RAW, &inet6domain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR, 328 ipcomp6_input, 0, 0, 0, 329 0, 330 0, 0, 0, 0, 331 #ifndef __FreeBSD__ 332 ipsec6_sysctl, 333 #else 334 # if __FreeBSD__ >= 3 335 &nousrreqs, 336 # endif 337 #endif 338 }, 339 #endif /* IPSEC */ 340 #if NGIF > 0 341 { SOCK_RAW, &inet6domain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR, 342 in6_gif_input,0, 0, 0, 343 0, 344 0, 0, 0, 0, 345 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 346 &nousrreqs 347 #endif 348 }, 349 #ifdef INET6 350 { SOCK_RAW, &inet6domain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR, 351 in6_gif_input,0, 0, 0, 352 0, 353 0, 0, 0, 0, 354 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 355 &nousrreqs 356 #endif 357 }, 358 #endif /* INET6 */ 359 #endif /* GIF */ 360 { SOCK_RAW, &inet6domain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR, 361 pim6_input, rip6_output, 0, rip6_ctloutput, 362 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 363 0, 364 #else 365 rip6_usrreq, 366 #endif 367 0, 0, 0, 0, 368 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 369 &rip6_usrreqs 370 # endif 371 }, 372 /* raw wildcard */ 373 { SOCK_RAW, &inet6domain, 0, PR_ATOMIC | PR_ADDR, 374 rip6_input, rip6_output, 0, rip6_ctloutput, 375 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 376 0, 0, 377 #else 378 rip6_usrreq, rip6_init, 379 #endif 380 0, 0, 0, 381 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 382 &rip6_usrreqs 383 #endif 384 }, 385 }; 386 387 #ifdef __FreeBSD__ 388 extern int in6_inithead __P((void **, int)); 389 #endif 390 391 struct domain inet6domain = 392 { AF_INET6, "internet6", 0, 0, 0, 393 (struct protosw *)inet6sw, 394 (struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])], 0, 395 #ifdef __FreeBSD__ 396 in6_inithead, 397 #else 398 rn_inithead, 399 #endif 400 offsetof(struct sockaddr_in6, sin6_addr) << 3, 401 sizeof(struct sockaddr_in6) }; 402 403 #ifdef __FreeBSD__ 404 DOMAIN_SET(inet6); 405 #endif 406 407 /* 408 * Internet configuration info 409 */ 410 #ifndef IPV6FORWARDING 411 #ifdef GATEWAY6 412 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 413 #else 414 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 415 #endif /* GATEWAY6 */ 416 #endif /* !IPV6FORWARDING */ 417 418 #ifndef IPV6_SENDREDIRECTS 419 #define IPV6_SENDREDIRECTS 1 420 #endif 421 422 int ip6_forwarding = IPV6FORWARDING; /* act as router? */ 423 int ip6_sendredirects = IPV6_SENDREDIRECTS; 424 int ip6_defhlim = IPV6_DEFHLIM; 425 int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS; 426 int ip6_accept_rtadv = 0; /* "IPV6FORWARDING ? 0 : 1" is dangerous */ 427 int ip6_maxfragpackets = 200; 428 int ip6_log_interval = 5; 429 int ip6_hdrnestlimit = 50; /* appropriate? */ 430 int ip6_dad_count = 1; /* DupAddrDetectionTransmits */ 431 u_int32_t ip6_flow_seq; 432 int ip6_auto_flowlabel = 1; 433 #if NGIF > 0 434 int ip6_gif_hlim = GIF_HLIM; 435 #else 436 int ip6_gif_hlim = 0; 437 #endif 438 int ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */ 439 int ip6_rr_prune = 5; /* router renumbering prefix 440 * walk list every 5 sec. */ 441 #ifdef MAPPED_ADDR_ENABLED 442 int ip6_mapped_addr_on = 1; 443 #endif /* MAPPED_ADDR_ENABLED */ 444 445 u_int32_t ip6_id = 0UL; 446 int ip6_keepfaith = 0; 447 time_t ip6_log_time = (time_t)0L; 448 449 /* icmp6 */ 450 #ifndef __bsdi__ 451 /* 452 * BSDI4 defines these variables in in_proto.c... 453 * XXX: what if we don't define INET? Should we define pmtu6_expire 454 * or so? (jinmei (at) kame.net 19990310) 455 */ 456 int pmtu_expire = 60*10; 457 int pmtu_probe = 60*2; 458 #endif 459 460 /* raw IP6 parameters */ 461 /* 462 * Nominal space allocated to a raw ip socket. 463 */ 464 #define RIPV6SNDQ 8192 465 #define RIPV6RCVQ 8192 466 467 u_long rip6_sendspace = RIPV6SNDQ; 468 u_long rip6_recvspace = RIPV6RCVQ; 469 470 /* ICMPV6 parameters */ 471 int icmp6_rediraccept = 1; /* accept and process redirects */ 472 int icmp6_redirtimeout = 10 * 60; /* 10 minutes */ 473 u_int icmp6errratelim = 1000; /* 1000usec = 1msec */ 474 475 #ifdef TCP6 476 /* TCP on IP6 parameters */ 477 int tcp6_sendspace = 1024 * 8; 478 int tcp6_recvspace = 1024 * 8; 479 int tcp6_mssdflt = TCP6_MSS; 480 int tcp6_rttdflt = TCP6TV_SRTTDFLT / PR_SLOWHZ; 481 int tcp6_do_rfc1323 = 1; 482 int tcp6_conntimeo = TCP6TV_KEEP_INIT; /* initial connection timeout */ 483 int tcp6_43maxseg = 0; 484 int tcp6_pmtu = 0; 485 486 /* 487 * Parameters for keepalive option. 488 * Connections for which SO_KEEPALIVE is set will be probed 489 * after being idle for a time of tcp6_keepidle (in units of PR_SLOWHZ). 490 * Starting at that time, the connection is probed at intervals 491 * of tcp6_keepintvl (same units) until a response is received 492 * or until tcp6_keepcnt probes have been made, at which time 493 * the connection is dropped. Note that a tcp6_keepidle value 494 * under 2 hours is nonconformant with RFC-1122, Internet Host Requirements. 495 */ 496 int tcp6_keepidle = TCP6TV_KEEP_IDLE; /* time before probing idle */ 497 int tcp6_keepintvl = TCP6TV_KEEPINTVL; /* interval betwn idle probes */ 498 int tcp6_keepcnt = TCP6TV_KEEPCNT; /* max idle probes */ 499 int tcp6_maxpersistidle = TCP6TV_KEEP_IDLE; /* max idle time in persist */ 500 501 #ifndef INET_SERVER 502 #define TCP6_LISTEN_HASH_SIZE 17 503 #define TCP6_CONN_HASH_SIZE 97 504 #define TCP6_SYN_HASH_SIZE 293 505 #define TCP6_SYN_BUCKET_SIZE 35 506 #else 507 #define TCP6_LISTEN_HASH_SIZE 97 508 #define TCP6_CONN_HASH_SIZE 9973 509 #define TCP6_SYN_HASH_SIZE 997 510 #define TCP6_SYN_BUCKET_SIZE 35 511 #endif 512 int tcp6_listen_hash_size = TCP6_LISTEN_HASH_SIZE; 513 int tcp6_conn_hash_size = TCP6_CONN_HASH_SIZE; 514 struct tcp6_hash_list tcp6_listen_hash[TCP6_LISTEN_HASH_SIZE], 515 tcp6_conn_hash[TCP6_CONN_HASH_SIZE]; 516 517 int tcp6_syn_cache_size = TCP6_SYN_HASH_SIZE; 518 int tcp6_syn_cache_limit = TCP6_SYN_HASH_SIZE*TCP6_SYN_BUCKET_SIZE; 519 int tcp6_syn_bucket_limit = 3*TCP6_SYN_BUCKET_SIZE; 520 struct syn_cache_head6 tcp6_syn_cache[TCP6_SYN_HASH_SIZE]; 521 struct syn_cache_head6 *tcp6_syn_cache_first; 522 int tcp6_syn_cache_interval = 8; /* runs timer every 4 seconds */ 523 int tcp6_syn_cache_timeo = TCP6TV_KEEP_INIT; 524 525 /* 526 * Parameters for computing a desirable data segment size 527 * given an upper bound (either interface MTU, or peer's MSS option)_. 528 * As applications tend to use a buffer size that is a multiple 529 * of kilobytes, try for something that divides evenly. However, 530 * do not round down too much. 531 * 532 * Round segment size down to a multiple of TCP6_ROUNDSIZE if this 533 * does not result in lowering by more than (size/TCP6_ROUNDFRAC). 534 * For example, round 536 to 512. Older versions of the system 535 * effectively used MCLBYTES (1K or 2K) as TCP6_ROUNDSIZE, with 536 * a value of 1 for TCP6_ROUNDFRAC (eliminating its effect). 537 * We round to a multiple of 256 for SLIP. 538 */ 539 #ifndef TCP6_ROUNDSIZE 540 #define TCP6_ROUNDSIZE 256 /* round to multiple of 256 */ 541 #endif 542 #ifndef TCP6_ROUNDFRAC 543 #define TCP6_ROUNDFRAC 10 /* round down at most N/10, or 10% */ 544 #endif 545 546 int tcp6_roundsize = TCP6_ROUNDSIZE; 547 int tcp6_roundfrac = TCP6_ROUNDFRAC; 548 #endif /*TCP6*/ 549 550 /* UDP on IP6 parameters */ 551 int udp6_sendspace = 9216; /* really max datagram size */ 552 int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6)); 553 /* 40 1K datagrams */ 554 555 #ifdef __FreeBSD__ 556 /* 557 * sysctl related items. 558 */ 559 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, 560 "Internet6 Family"); 561 562 /* net.inet6 */ 563 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); 564 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); 565 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); 566 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); 567 #ifdef IPSEC 568 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); 569 #endif /* IPSEC */ 570 571 /* net.inet6.ip6 */ 572 static int 573 sysctl_ip6_forwarding SYSCTL_HANDLER_ARGS 574 { 575 int error = 0; 576 int old_ip6_forwarding; 577 int changed; 578 579 error = SYSCTL_OUT(req, arg1, sizeof(int)); 580 if (error || !req->newptr) 581 return (error); 582 old_ip6_forwarding = ip6_forwarding; 583 error = SYSCTL_IN(req, arg1, sizeof(int)); 584 if (error != 0) 585 return (error); 586 changed = (ip6_forwarding ? 1 : 0) ^ (old_ip6_forwarding ? 1 : 0); 587 if (changed == 0) 588 return (error); 589 if (ip6_forwarding != 0) { /* host becomes router */ 590 int s = splnet(); 591 struct nd_prefix *pr, *next; 592 593 for (pr = nd_prefix.lh_first; pr; pr = next) { 594 next = pr->ndpr_next; 595 if (!IN6_IS_ADDR_UNSPECIFIED(&pr->ndpr_addr)) 596 in6_ifdel(pr->ndpr_ifp, &pr->ndpr_addr); 597 prelist_remove(pr); 598 } 599 splx(s); 600 } else { /* router becomes host */ 601 struct socket so; 602 603 /* XXX: init dummy so */ 604 bzero(&so, sizeof(so)); 605 while(!LIST_EMPTY(&rr_prefix)) 606 delete_each_prefix(&so, LIST_FIRST(&rr_prefix), 607 PR_ORIG_KERNEL); 608 } 609 610 return (error); 611 } 612 613 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, 614 CTLTYPE_INT|CTLFLAG_RW, &ip6_forwarding, 0, sysctl_ip6_forwarding, 615 "I", ""); 616 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, 617 redirect, CTLFLAG_RW, &ip6_sendredirects, 0, ""); 618 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, 619 hlim, CTLFLAG_RW, &ip6_defhlim, 0, ""); 620 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, 621 maxfragpackets, CTLFLAG_RW, &ip6_maxfragpackets, 0, ""); 622 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, 623 accept_rtadv, CTLFLAG_RW, &ip6_accept_rtadv, 0, ""); 624 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH, 625 keepfaith, CTLFLAG_RW, &ip6_keepfaith, 0, ""); 626 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, 627 log_interval, CTLFLAG_RW, &ip6_log_interval, 0, ""); 628 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, 629 hdrnestlimit, CTLFLAG_RW, &ip6_hdrnestlimit, 0, ""); 630 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, 631 dad_count, CTLFLAG_RW, &ip6_dad_count, 0, ""); 632 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, 633 auto_flowlabel, CTLFLAG_RW, &ip6_auto_flowlabel, 0, ""); 634 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, 635 defmcasthlim, CTLFLAG_RW, &ip6_defmcasthlim, 0, ""); 636 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM, 637 gifhlim, CTLFLAG_RW, &ip6_gif_hlim, 0, ""); 638 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, 639 kame_version, CTLFLAG_RD, __KAME_VERSION, 0, ""); 640 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, 641 use_deprecated, CTLFLAG_RW, &ip6_use_deprecated, 0, ""); 642 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, 643 rr_prune, CTLFLAG_RW, &ip6_rr_prune, 0, ""); 644 #ifdef MAPPED_ADDR_ENABLED 645 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAPPED_ADDR, 646 mapped_addr, CTLFLAG_RW, &ip6_mapped_addr_on, 0, ""); 647 #endif /* MAPPED_ADDR_ENABLED */ 648 649 /* net.inet6.icmp6 */ 650 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, 651 rediraccept, CTLFLAG_RW, &icmp6_rediraccept, 0, ""); 652 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, 653 redirtimeout, CTLFLAG_RW, &icmp6_redirtimeout, 0, ""); 654 SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD, 655 &icmp6stat, icmp6stat, ""); 656 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRRATELIMIT, 657 errratelimit, CTLFLAG_RW, &icmp6errratelim, 0, ""); 658 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, 659 nd6_prune, CTLFLAG_RW, &nd6_prune, 0, ""); 660 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, 661 nd6_delay, CTLFLAG_RW, &nd6_delay, 0, ""); 662 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, 663 nd6_umaxtries, CTLFLAG_RW, &nd6_umaxtries, 0, ""); 664 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, 665 nd6_mmaxtries, CTLFLAG_RW, &nd6_mmaxtries, 0, ""); 666 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, 667 nd6_useloopback, CTLFLAG_RW, &nd6_useloopback, 0, ""); 668 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PROXYALL, 669 nd6_proxyall, CTLFLAG_RW, &nd6_proxyall, 0, ""); 670 671 #if __FreeBSD__ < 3 672 /* net.inet6.udp6 */ 673 SYSCTL_INT(_net_inet6_udp6, UDP6CTL_SENDMAX, 674 sendmax, CTLFLAG_RW, &udp6_sendspace, 0, ""); 675 SYSCTL_INT(_net_inet6_udp6, UDP6CTL_RECVSPACE, 676 recvspace, CTLFLAG_RW, &udp6_recvspace, 0, ""); 677 678 /* net.inet6.tcp6 */ 679 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_MSSDFLT, 680 mssdflt, CTLFLAG_RW, &tcp6_mssdflt, 0, ""); 681 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_DO_RFC1323, 682 do_rfc1323, CTLFLAG_RW, &tcp6_do_rfc1323, 0, ""); 683 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_KEEPIDLE, 684 keepidle, CTLFLAG_RW, &tcp6_keepidle, 0, ""); 685 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_KEEPINTVL, 686 keepintvl, CTLFLAG_RW, &tcp6_keepintvl, 0, ""); 687 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_KEEPCNT, 688 keepcnt, CTLFLAG_RW, &tcp6_keepcnt, 0, ""); 689 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_MAXPERSISTIDLE, 690 maxpersistidle, CTLFLAG_RW, &tcp6_maxpersistidle, 0, ""); 691 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_SENDSPACE, 692 sendspace, CTLFLAG_RW, &tcp6_sendspace, 0, ""); 693 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_RECVSPACE, 694 recvspace, CTLFLAG_RW, &tcp6_recvspace, 0, ""); 695 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_CONNTIMEO, 696 conntimeo, CTLFLAG_RW, &tcp6_conntimeo, 0, ""); 697 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_PMTU, 698 pmtu, CTLFLAG_RW, &tcp6_pmtu, 0, ""); 699 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_PMTU_EXPIRE, 700 pmtu_expire, CTLFLAG_RW, &pmtu_expire, 0, ""); 701 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_PMTU_PROBE, 702 pmtu_probe, CTLFLAG_RW, &pmtu_probe, 0, ""); 703 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_43MAXSEG, 704 pmtu_43maxseg, CTLFLAG_RW, &tcp6_43maxseg, 0, ""); 705 SYSCTL_STRUCT(_net_inet6_tcp6, TCP6CTL_STATS, stats, CTLFLAG_RD, 706 &tcp6stat, tcp6stat, ""); 707 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_SYN_CACHE_LIMIT, 708 syn_cache_limit, CTLFLAG_RW, &tcp6_syn_cache_limit, 0, ""); 709 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_SYN_BUCKET_LIMIT, 710 syn_bucket_limit, CTLFLAG_RW, &tcp6_syn_bucket_limit, 0, ""); 711 SYSCTL_INT(_net_inet6_tcp6, TCP6CTL_SYN_CACHE_INTER, 712 syn_cache_interval, CTLFLAG_RW, &tcp6_syn_cache_interval, 0, ""); 713 #endif /* !(defined(__FreeBSD__) && __FreeBSD__ >= 3) */ 714 715 #endif /* __FreeBSD__ */ 716
Indexes created Mon Oct 20 05:10:11 GMT 2025