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 * $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $ 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 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)in_proto.c 8.1 (Berkeley) 6/10/93 61 */ 62 63#include <sys/cdefs.h> 64__FBSDID("$FreeBSD: releng/11.0/sys/netinet6/in6_proto.c 301114 2016-06-01 10:14:04Z bz $"); 65 66#include "opt_inet.h" 67#include "opt_inet6.h" 68#include "opt_ipsec.h" 69#include "opt_ipstealth.h" 70#include "opt_sctp.h" 71#include "opt_mpath.h" 72#include "opt_route.h" 73 74#include <sys/param.h> 75#include <sys/socket.h> 76#include <sys/socketvar.h> 77#include <sys/proc.h> 78#include <sys/protosw.h> 79#include <sys/jail.h> 80#include <sys/kernel.h> 81#include <sys/malloc.h> 82#include <sys/domain.h> 83#include <sys/mbuf.h> 84#include <sys/systm.h> 85#include <sys/sysctl.h> 86 87#include <net/if.h> 88#include <net/if_var.h> 89#include <net/radix.h> 90#include <net/route.h> 91#ifdef RADIX_MPATH 92#include <net/radix_mpath.h> 93#endif 94 95#include <netinet/in.h> 96#include <netinet/in_systm.h> 97#include <netinet/in_var.h> 98#include <netinet/ip_encap.h> 99#include <netinet/ip.h> 100#include <netinet/ip_var.h> 101#include <netinet/ip6.h> 102#include <netinet6/ip6_var.h> 103#include <netinet/icmp6.h> 104 105#include <netinet/tcp.h> 106#include <netinet/tcp_timer.h> 107#include <netinet/tcp_var.h> 108#include <netinet/udp.h> 109#include <netinet/udp_var.h> 110#include <netinet6/tcp6_var.h> 111#include <netinet6/raw_ip6.h> 112#include <netinet6/udp6_var.h> 113#include <netinet6/pim6_var.h> 114#include <netinet6/nd6.h> 115 116#ifdef SCTP 117#include <netinet/in_pcb.h> 118#include <netinet/sctp_pcb.h> 119#include <netinet/sctp.h> 120#include <netinet/sctp_var.h> 121#include <netinet6/sctp6_var.h> 122#endif /* SCTP */ 123 124#ifdef IPSEC 125#include <netipsec/ipsec.h> 126#include <netipsec/ipsec6.h> 127#endif /* IPSEC */ 128 129#include <netinet6/ip6protosw.h> 130 131/* 132 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. 133 */ 134FEATURE(inet6, "Internet Protocol version 6"); 135 136extern struct domain inet6domain; 137static struct pr_usrreqs nousrreqs; 138 139#define PR_LISTEN 0 140#define PR_ABRTACPTDIS 0 141 142/* Spacer for loadable protocols. */ 143#define IP6PROTOSPACER \ 144{ \ 145 .pr_domain = &inet6domain, \ 146 .pr_protocol = PROTO_SPACER, \ 147 .pr_usrreqs = &nousrreqs \ 148} 149 150struct protosw inet6sw[] = { 151{ 152 .pr_type = 0, 153 .pr_domain = &inet6domain, 154 .pr_protocol = IPPROTO_IPV6, 155 .pr_init = ip6_init, 156 .pr_slowtimo = frag6_slowtimo, 157 .pr_drain = frag6_drain, 158 .pr_usrreqs = &nousrreqs, 159}, 160{ 161 .pr_type = SOCK_DGRAM, 162 .pr_domain = &inet6domain, 163 .pr_protocol = IPPROTO_UDP, 164 .pr_flags = PR_ATOMIC|PR_ADDR, 165 .pr_input = udp6_input, 166 .pr_ctlinput = udp6_ctlinput, 167 .pr_ctloutput = ip6_ctloutput, 168#ifndef INET /* Do not call initialization twice. */ 169 .pr_init = udp_init, 170#endif 171 .pr_usrreqs = &udp6_usrreqs, 172}, 173{ 174 .pr_type = SOCK_STREAM, 175 .pr_domain = &inet6domain, 176 .pr_protocol = IPPROTO_TCP, 177 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN, 178 .pr_input = tcp6_input, 179 .pr_ctlinput = tcp6_ctlinput, 180 .pr_ctloutput = tcp_ctloutput, 181#ifndef INET /* don't call initialization and timeout routines twice */ 182 .pr_init = tcp_init, 183 .pr_slowtimo = tcp_slowtimo, 184#endif 185 .pr_drain = tcp_drain, 186 .pr_usrreqs = &tcp6_usrreqs, 187}, 188#ifdef SCTP 189{ 190 .pr_type = SOCK_SEQPACKET, 191 .pr_domain = &inet6domain, 192 .pr_protocol = IPPROTO_SCTP, 193 .pr_flags = PR_WANTRCVD, 194 .pr_input = sctp6_input, 195 .pr_ctlinput = sctp6_ctlinput, 196 .pr_ctloutput = sctp_ctloutput, 197 .pr_drain = sctp_drain, 198#ifndef INET /* Do not call initialization twice. */ 199 .pr_init = sctp_init, 200#endif 201 .pr_usrreqs = &sctp6_usrreqs 202}, 203{ 204 .pr_type = SOCK_STREAM, 205 .pr_domain = &inet6domain, 206 .pr_protocol = IPPROTO_SCTP, 207 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD, 208 .pr_input = sctp6_input, 209 .pr_ctlinput = sctp6_ctlinput, 210 .pr_ctloutput = sctp_ctloutput, 211 .pr_drain = sctp_drain, 212 .pr_usrreqs = &sctp6_usrreqs 213}, 214#endif /* SCTP */ 215{ 216 .pr_type = SOCK_DGRAM, 217 .pr_domain = &inet6domain, 218 .pr_protocol = IPPROTO_UDPLITE, 219 .pr_flags = PR_ATOMIC|PR_ADDR, 220 .pr_input = udp6_input, 221 .pr_ctlinput = udplite6_ctlinput, 222 .pr_ctloutput = udp_ctloutput, 223#ifndef INET /* Do not call initialization twice. */ 224 .pr_init = udplite_init, 225#endif 226 .pr_usrreqs = &udp6_usrreqs, 227}, 228{ 229 .pr_type = SOCK_RAW, 230 .pr_domain = &inet6domain, 231 .pr_protocol = IPPROTO_RAW, 232 .pr_flags = PR_ATOMIC|PR_ADDR, 233 .pr_input = rip6_input, 234 .pr_output = rip6_output, 235 .pr_ctlinput = rip6_ctlinput, 236 .pr_ctloutput = rip6_ctloutput, 237#ifndef INET /* Do not call initialization twice. */ 238 .pr_init = rip_init, 239#endif 240 .pr_usrreqs = &rip6_usrreqs 241}, 242{ 243 .pr_type = SOCK_RAW, 244 .pr_domain = &inet6domain, 245 .pr_protocol = IPPROTO_ICMPV6, 246 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 247 .pr_input = icmp6_input, 248 .pr_output = rip6_output, 249 .pr_ctlinput = rip6_ctlinput, 250 .pr_ctloutput = rip6_ctloutput, 251 .pr_fasttimo = icmp6_fasttimo, 252 .pr_slowtimo = icmp6_slowtimo, 253 .pr_usrreqs = &rip6_usrreqs 254}, 255{ 256 .pr_type = SOCK_RAW, 257 .pr_domain = &inet6domain, 258 .pr_protocol = IPPROTO_DSTOPTS, 259 .pr_flags = PR_ATOMIC|PR_ADDR, 260 .pr_input = dest6_input, 261 .pr_usrreqs = &nousrreqs 262}, 263{ 264 .pr_type = SOCK_RAW, 265 .pr_domain = &inet6domain, 266 .pr_protocol = IPPROTO_ROUTING, 267 .pr_flags = PR_ATOMIC|PR_ADDR, 268 .pr_input = route6_input, 269 .pr_usrreqs = &nousrreqs 270}, 271{ 272 .pr_type = SOCK_RAW, 273 .pr_domain = &inet6domain, 274 .pr_protocol = IPPROTO_FRAGMENT, 275 .pr_flags = PR_ATOMIC|PR_ADDR, 276 .pr_input = frag6_input, 277 .pr_usrreqs = &nousrreqs 278}, 279#ifdef IPSEC 280{ 281 .pr_type = SOCK_RAW, 282 .pr_domain = &inet6domain, 283 .pr_protocol = IPPROTO_AH, 284 .pr_flags = PR_ATOMIC|PR_ADDR, 285 .pr_input = ipsec6_common_input, 286 .pr_usrreqs = &nousrreqs, 287}, 288{ 289 .pr_type = SOCK_RAW, 290 .pr_domain = &inet6domain, 291 .pr_protocol = IPPROTO_ESP, 292 .pr_flags = PR_ATOMIC|PR_ADDR, 293 .pr_input = ipsec6_common_input, 294 .pr_ctlinput = esp6_ctlinput, 295 .pr_usrreqs = &nousrreqs, 296}, 297{ 298 .pr_type = SOCK_RAW, 299 .pr_domain = &inet6domain, 300 .pr_protocol = IPPROTO_IPCOMP, 301 .pr_flags = PR_ATOMIC|PR_ADDR, 302 .pr_input = ipsec6_common_input, 303 .pr_usrreqs = &nousrreqs, 304}, 305#endif /* IPSEC */ 306#ifdef INET 307{ 308 .pr_type = SOCK_RAW, 309 .pr_domain = &inet6domain, 310 .pr_protocol = IPPROTO_IPV4, 311 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 312 .pr_input = encap6_input, 313 .pr_output = rip6_output, 314 .pr_ctloutput = rip6_ctloutput, 315 .pr_init = encap_init, 316 .pr_usrreqs = &rip6_usrreqs 317}, 318#endif /* INET */ 319{ 320 .pr_type = SOCK_RAW, 321 .pr_domain = &inet6domain, 322 .pr_protocol = IPPROTO_IPV6, 323 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 324 .pr_input = encap6_input, 325 .pr_output = rip6_output, 326 .pr_ctloutput = rip6_ctloutput, 327 .pr_init = encap_init, 328 .pr_usrreqs = &rip6_usrreqs 329}, 330{ 331 .pr_type = SOCK_RAW, 332 .pr_domain = &inet6domain, 333 .pr_protocol = IPPROTO_GRE, 334 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 335 .pr_input = encap6_input, 336 .pr_output = rip6_output, 337 .pr_ctloutput = rip6_ctloutput, 338 .pr_init = encap_init, 339 .pr_usrreqs = &rip6_usrreqs 340}, 341{ 342 .pr_type = SOCK_RAW, 343 .pr_domain = &inet6domain, 344 .pr_protocol = IPPROTO_PIM, 345 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 346 .pr_input = encap6_input, 347 .pr_output = rip6_output, 348 .pr_ctloutput = rip6_ctloutput, 349 .pr_usrreqs = &rip6_usrreqs 350}, 351/* Spacer n-times for loadable protocols. */ 352IP6PROTOSPACER, 353IP6PROTOSPACER, 354IP6PROTOSPACER, 355IP6PROTOSPACER, 356IP6PROTOSPACER, 357IP6PROTOSPACER, 358IP6PROTOSPACER, 359IP6PROTOSPACER, 360/* raw wildcard */ 361{ 362 .pr_type = SOCK_RAW, 363 .pr_domain = &inet6domain, 364 .pr_flags = PR_ATOMIC|PR_ADDR, 365 .pr_input = rip6_input, 366 .pr_output = rip6_output, 367 .pr_ctloutput = rip6_ctloutput, 368 .pr_usrreqs = &rip6_usrreqs 369}, 370}; 371 372extern int in6_inithead(void **, int); 373#ifdef VIMAGE 374extern int in6_detachhead(void **, int); 375#endif 376 377struct domain inet6domain = { 378 .dom_family = AF_INET6, 379 .dom_name = "internet6", 380 .dom_protosw = (struct protosw *)inet6sw, 381 .dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)], 382#ifdef RADIX_MPATH 383 .dom_rtattach = rn6_mpath_inithead, 384#else 385 .dom_rtattach = in6_inithead, 386#endif 387#ifdef VIMAGE 388 .dom_rtdetach = in6_detachhead, 389#endif 390 .dom_ifattach = in6_domifattach, 391 .dom_ifdetach = in6_domifdetach, 392 .dom_ifmtu = in6_domifmtu 393}; 394 395VNET_DOMAIN_SET(inet6); 396 397/* 398 * Internet configuration info 399 */ 400#ifndef IPV6FORWARDING 401#ifdef GATEWAY6 402#define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 403#else 404#define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 405#endif /* GATEWAY6 */ 406#endif /* !IPV6FORWARDING */ 407 408#ifndef IPV6_SENDREDIRECTS 409#define IPV6_SENDREDIRECTS 1 410#endif 411 412VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */ 413VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS; 414VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM; 415VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS; 416VNET_DEFINE(int, ip6_accept_rtadv) = 0; 417VNET_DEFINE(int, ip6_no_radr) = 0; 418VNET_DEFINE(int, ip6_norbit_raif) = 0; 419VNET_DEFINE(int, ip6_rfc6204w3) = 0; 420VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */ 421VNET_DEFINE(int, ip6_maxfrags); /* initialized in frag6.c:frag6_init() */ 422VNET_DEFINE(int, ip6_log_interval) = 5; 423VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we 424 * process? */ 425VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */ 426VNET_DEFINE(int, ip6_auto_flowlabel) = 1; 427VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr 428 * (RFC2462 5.5.4) */ 429VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix 430 * walk list every 5 sec. */ 431VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */ 432VNET_DEFINE(int, ip6_v6only) = 1; 433 434VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L; 435#ifdef IPSTEALTH 436VNET_DEFINE(int, ip6stealth) = 0; 437#endif 438VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS 439 * (RFC 4861) */ 440 441/* icmp6 */ 442/* 443 * BSDI4 defines these variables in in_proto.c... 444 * XXX: what if we don't define INET? Should we define pmtu6_expire 445 * or so? (jinmei@kame.net 19990310) 446 */ 447VNET_DEFINE(int, pmtu_expire) = 60*10; 448VNET_DEFINE(int, pmtu_probe) = 60*2; 449 450/* ICMPV6 parameters */ 451VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */ 452VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */ 453VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */ 454/* control how to respond to NI queries */ 455VNET_DEFINE(int, icmp6_nodeinfo) = 456 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK); 457VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1; 458 459/* 460 * sysctl related items. 461 */ 462SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, 463 "Internet6 Family"); 464 465/* net.inet6 */ 466SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); 467SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); 468SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); 469SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); 470#ifdef SCTP 471SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6"); 472#endif 473#ifdef IPSEC 474SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); 475#endif /* IPSEC */ 476 477/* net.inet6.ip6 */ 478static int 479sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS) 480{ 481 int error, val; 482 483 val = V_ip6_temp_preferred_lifetime; 484 error = sysctl_handle_int(oidp, &val, 0, req); 485 if (error != 0 || !req->newptr) 486 return (error); 487 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance) 488 return (EINVAL); 489 V_ip6_temp_preferred_lifetime = val; 490 return (0); 491} 492 493static int 494sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS) 495{ 496 int error, val; 497 498 val = V_ip6_temp_valid_lifetime; 499 error = sysctl_handle_int(oidp, &val, 0, req); 500 if (error != 0 || !req->newptr) 501 return (error); 502 if (val < V_ip6_temp_preferred_lifetime) 503 return (EINVAL); 504 V_ip6_temp_valid_lifetime = val; 505 return (0); 506} 507 508SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, 509 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0, 510 "Enable IPv6 forwarding between interfaces"); 511SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, 512 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0, 513 "Send a redirect message when forwarding back to a source link"); 514SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, 515 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0, 516 "Default hop limit"); 517SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat, 518 ip6stat, 519 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)"); 520SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets, 521 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0, 522 "Maximum allowed number of outstanding fragmented IPv6 packets"); 523SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv, 524 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0, 525 "Default value of per-interface flag for accepting ICMPv6 RA messages"); 526SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr, 527 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0, 528 "Default value of per-interface flag to control whether routers " 529 "sending ICMPv6 RA messages on that interface are added into the " 530 "default router list"); 531SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif, 532 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0, 533 "Always set clear the R flag in ICMPv6 NA messages when accepting RA " 534 "on the interface"); 535SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3, 536 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0, 537 "Accept the default router list from ICMPv6 RA messages even " 538 "when packet forwarding is enabled"); 539SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval, 540 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, 541 "Frequency in seconds at which to log IPv6 forwarding errors"); 542SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit, 543 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, 544 "Maximum allowed number of nested protocol headers"); 545SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, 546 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0, 547 "Number of ICMPv6 NS messages sent during duplicate address detection"); 548SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel, 549 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, 550 "Provide an IPv6 flowlabel in outbound packets"); 551SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim, 552 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, 553 "Default hop limit for multicast packets"); 554SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version, 555 CTLFLAG_RD, __KAME_VERSION, 0, 556 "KAME version string"); 557SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated, 558 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, 559 "Allow the use of addresses whose preferred lifetimes have expired"); 560SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, 561 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0, 562 ""); /* XXX unused */ 563SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr, 564 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, 565 "Create RFC3041 temporary addresses for autoconfigured addresses"); 566SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime, 567 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 568 NULL, 0, sysctl_ip6_temppltime, "I", 569 "Maximum preferred lifetime for temporary addresses"); 570SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime, 571 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 572 NULL, 0, sysctl_ip6_tempvltime, "I", 573 "Maximum valid lifetime for temporary addresses"); 574SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only, 575 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0, 576 "Restrict AF_INET6 sockets to IPv6 addresses only"); 577SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal, 578 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0, 579 "Default value of per-interface flag for automatically adding an IPv6 " 580 "link-local address to interfaces when attached"); 581SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, 582 struct rip6stat, rip6stat, 583 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)"); 584SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr, 585 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0, 586 "Prefer RFC3041 temporary addresses in source address selection"); 587SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone, 588 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0, 589 "Use the default scope zone when none is specified"); 590SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags, 591 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfrags), 0, 592 "Maximum allowed number of outstanding IPv6 packet fragments"); 593SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu, 594 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0, 595 "Enable path MTU discovery for multicast packets"); 596#ifdef IPSTEALTH 597SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW, 598 &VNET_NAME(ip6stealth), 0, 599 "Forward IPv6 packets without decrementing their TTL"); 600#endif 601 602/* net.inet6.icmp6 */ 603SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept, 604 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0, 605 "Accept ICMPv6 redirect messages"); 606SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout, 607 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0, 608 ""); /* XXX unused */ 609SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, 610 struct icmp6stat, icmp6stat, 611 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)"); 612SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, 613 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0, 614 "Frequency in seconds of checks for expired prefixes and routers"); 615SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, 616 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0, 617 "Delay in seconds before probing for reachability"); 618SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries, 619 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0, 620 "Number of ICMPv6 NS messages sent during reachability detection"); 621SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries, 622 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0, 623 "Number of ICMPv6 NS messages sent during address resolution"); 624SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback, 625 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0, 626 "Create a loopback route when configuring an IPv6 address"); 627SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo, 628 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0, 629 "Mask of enabled RF4620 node information query types"); 630SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX, 631 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW, 632 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0, 633 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup " 634 "for compatibility with KAME implementation"); 635SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit, 636 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, 637 "Maximum number of ICMPv6 error messages per second"); 638SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint, 639 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0, 640 ""); /* XXX unused */ 641SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug, 642 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0, 643 "Log NDP debug messages"); 644SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861, 645 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW, 646 &VNET_NAME(nd6_onlink_ns_rfc4861), 0, 647 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861"); 648