1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 * $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $ 32 */ 33 34/*- 35 * Copyright (c) 1982, 1986, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. 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#include <sys/cdefs.h> 66__FBSDID("$FreeBSD$"); 67 68#include "opt_inet.h" 69#include "opt_inet6.h" 70#include "opt_ipsec.h" 71#include "opt_ipstealth.h" 72#include "opt_sctp.h" 73#include "opt_mpath.h" 74#include "opt_route.h" 75 76#include <sys/param.h> 77#include <sys/socket.h> 78#include <sys/socketvar.h> 79#include <sys/proc.h> 80#include <sys/protosw.h> 81#include <sys/jail.h> 82#include <sys/kernel.h> 83#include <sys/malloc.h> 84#include <sys/domain.h> 85#include <sys/mbuf.h> 86#include <sys/systm.h> 87#include <sys/sysctl.h> 88 89#include <net/if.h> 90#include <net/if_var.h> 91#include <net/radix.h> 92#include <net/route.h> 93#ifdef RADIX_MPATH 94#include <net/radix_mpath.h> 95#endif 96 97#include <netinet/in.h> 98#include <netinet/in_systm.h> 99#include <netinet/in_var.h> 100#include <netinet/ip_encap.h> 101#include <netinet/ip.h> 102#include <netinet/ip_var.h> 103#include <netinet/ip6.h> 104#include <netinet6/ip6_var.h> 105#include <netinet/icmp6.h> 106 107#include <netinet/tcp.h> 108#include <netinet/tcp_timer.h> 109#include <netinet/tcp_var.h> 110#include <netinet/udp.h> 111#include <netinet/udp_var.h> 112#include <netinet6/tcp6_var.h> 113#include <netinet6/raw_ip6.h> 114#include <netinet6/udp6_var.h> 115#include <netinet6/pim6_var.h> 116#include <netinet6/nd6.h> 117 118#ifdef SCTP 119#include <netinet/in_pcb.h> 120#include <netinet/sctp_pcb.h> 121#include <netinet/sctp.h> 122#include <netinet/sctp_var.h> 123#include <netinet6/sctp6_var.h> 124#endif /* SCTP */ 125 126#include <netinet6/ip6protosw.h> 127 128/* 129 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. 130 */ 131FEATURE(inet6, "Internet Protocol version 6"); 132 133extern struct domain inet6domain; 134static struct pr_usrreqs nousrreqs; 135 136#define PR_LISTEN 0 137#define PR_ABRTACPTDIS 0 138 139/* Spacer for loadable protocols. */ 140#define IP6PROTOSPACER \ 141{ \ 142 .pr_domain = &inet6domain, \ 143 .pr_protocol = PROTO_SPACER, \ 144 .pr_usrreqs = &nousrreqs \ 145} 146 147struct protosw inet6sw[] = { 148{ 149 .pr_type = 0, 150 .pr_domain = &inet6domain, 151 .pr_protocol = IPPROTO_IPV6, 152 .pr_init = ip6_init, 153 .pr_slowtimo = frag6_slowtimo, 154 .pr_drain = frag6_drain, 155 .pr_usrreqs = &nousrreqs, 156}, 157{ 158 .pr_type = SOCK_DGRAM, 159 .pr_domain = &inet6domain, 160 .pr_protocol = IPPROTO_UDP, 161 .pr_flags = PR_ATOMIC|PR_ADDR, 162 .pr_input = udp6_input, 163 .pr_ctlinput = udp6_ctlinput, 164 .pr_ctloutput = ip6_ctloutput, 165#ifndef INET /* Do not call initialization twice. */ 166 .pr_init = udp_init, 167#endif 168 .pr_usrreqs = &udp6_usrreqs, 169}, 170{ 171 .pr_type = SOCK_STREAM, 172 .pr_domain = &inet6domain, 173 .pr_protocol = IPPROTO_TCP, 174 .pr_flags = PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD|PR_LISTEN, 175 .pr_input = tcp6_input, 176 .pr_ctlinput = tcp6_ctlinput, 177 .pr_ctloutput = tcp_ctloutput, 178#ifndef INET /* don't call initialization and timeout routines twice */ 179 .pr_init = tcp_init, 180 .pr_slowtimo = tcp_slowtimo, 181#endif 182 .pr_drain = tcp_drain, 183 .pr_usrreqs = &tcp6_usrreqs, 184}, 185#ifdef SCTP 186{ 187 .pr_type = SOCK_SEQPACKET, 188 .pr_domain = &inet6domain, 189 .pr_protocol = IPPROTO_SCTP, 190 .pr_flags = PR_WANTRCVD|PR_LASTHDR, 191 .pr_input = sctp6_input, 192 .pr_ctlinput = sctp6_ctlinput, 193 .pr_ctloutput = sctp_ctloutput, 194 .pr_drain = sctp_drain, 195#ifndef INET /* Do not call initialization twice. */ 196 .pr_init = sctp_init, 197#endif 198 .pr_usrreqs = &sctp6_usrreqs 199}, 200{ 201 .pr_type = SOCK_STREAM, 202 .pr_domain = &inet6domain, 203 .pr_protocol = IPPROTO_SCTP, 204 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR, 205 .pr_input = sctp6_input, 206 .pr_ctlinput = sctp6_ctlinput, 207 .pr_ctloutput = sctp_ctloutput, 208 .pr_drain = sctp_drain, 209 .pr_usrreqs = &sctp6_usrreqs 210}, 211#endif /* SCTP */ 212{ 213 .pr_type = SOCK_DGRAM, 214 .pr_domain = &inet6domain, 215 .pr_protocol = IPPROTO_UDPLITE, 216 .pr_flags = PR_ATOMIC|PR_ADDR, 217 .pr_input = udp6_input, 218 .pr_ctlinput = udplite6_ctlinput, 219 .pr_ctloutput = udp_ctloutput, 220#ifndef INET /* Do not call initialization twice. */ 221 .pr_init = udplite_init, 222#endif 223 .pr_usrreqs = &udp6_usrreqs, 224}, 225{ 226 .pr_type = SOCK_RAW, 227 .pr_domain = &inet6domain, 228 .pr_protocol = IPPROTO_RAW, 229 .pr_flags = PR_ATOMIC|PR_ADDR, 230 .pr_input = rip6_input, 231 .pr_output = rip6_output, 232 .pr_ctlinput = rip6_ctlinput, 233 .pr_ctloutput = rip6_ctloutput, 234#ifndef INET /* Do not call initialization twice. */ 235 .pr_init = rip_init, 236#endif 237 .pr_usrreqs = &rip6_usrreqs 238}, 239{ 240 .pr_type = SOCK_RAW, 241 .pr_domain = &inet6domain, 242 .pr_protocol = IPPROTO_ICMPV6, 243 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 244 .pr_input = icmp6_input, 245 .pr_output = rip6_output, 246 .pr_ctlinput = rip6_ctlinput, 247 .pr_ctloutput = rip6_ctloutput, 248 .pr_fasttimo = icmp6_fasttimo, 249 .pr_slowtimo = icmp6_slowtimo, 250 .pr_usrreqs = &rip6_usrreqs 251}, 252{ 253 .pr_type = SOCK_RAW, 254 .pr_domain = &inet6domain, 255 .pr_protocol = IPPROTO_DSTOPTS, 256 .pr_flags = PR_ATOMIC|PR_ADDR, 257 .pr_input = dest6_input, 258 .pr_usrreqs = &nousrreqs 259}, 260{ 261 .pr_type = SOCK_RAW, 262 .pr_domain = &inet6domain, 263 .pr_protocol = IPPROTO_ROUTING, 264 .pr_flags = PR_ATOMIC|PR_ADDR, 265 .pr_input = route6_input, 266 .pr_usrreqs = &nousrreqs 267}, 268{ 269 .pr_type = SOCK_RAW, 270 .pr_domain = &inet6domain, 271 .pr_protocol = IPPROTO_FRAGMENT, 272 .pr_flags = PR_ATOMIC|PR_ADDR, 273 .pr_input = frag6_input, 274 .pr_usrreqs = &nousrreqs 275}, 276#ifdef INET 277{ 278 .pr_type = SOCK_RAW, 279 .pr_domain = &inet6domain, 280 .pr_protocol = IPPROTO_IPV4, 281 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 282 .pr_input = encap6_input, 283 .pr_output = rip6_output, 284 .pr_ctloutput = rip6_ctloutput, 285 .pr_usrreqs = &rip6_usrreqs 286}, 287#endif /* INET */ 288{ 289 .pr_type = SOCK_RAW, 290 .pr_domain = &inet6domain, 291 .pr_protocol = IPPROTO_IPV6, 292 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 293 .pr_input = encap6_input, 294 .pr_output = rip6_output, 295 .pr_ctloutput = rip6_ctloutput, 296 .pr_usrreqs = &rip6_usrreqs 297}, 298{ 299 .pr_type = SOCK_RAW, 300 .pr_domain = &inet6domain, 301 .pr_protocol = IPPROTO_GRE, 302 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 303 .pr_input = encap6_input, 304 .pr_output = rip6_output, 305 .pr_ctloutput = rip6_ctloutput, 306 .pr_usrreqs = &rip6_usrreqs 307}, 308{ 309 .pr_type = SOCK_RAW, 310 .pr_domain = &inet6domain, 311 .pr_protocol = IPPROTO_PIM, 312 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 313 .pr_input = encap6_input, 314 .pr_output = rip6_output, 315 .pr_ctloutput = rip6_ctloutput, 316 .pr_usrreqs = &rip6_usrreqs 317}, 318/* Spacer n-times for loadable protocols. */ 319IP6PROTOSPACER, 320IP6PROTOSPACER, 321IP6PROTOSPACER, 322IP6PROTOSPACER, 323IP6PROTOSPACER, 324IP6PROTOSPACER, 325IP6PROTOSPACER, 326IP6PROTOSPACER, 327/* raw wildcard */ 328{ 329 .pr_type = SOCK_RAW, 330 .pr_domain = &inet6domain, 331 .pr_flags = PR_ATOMIC|PR_ADDR, 332 .pr_input = rip6_input, 333 .pr_output = rip6_output, 334 .pr_ctloutput = rip6_ctloutput, 335 .pr_usrreqs = &rip6_usrreqs 336}, 337}; 338 339extern int in6_inithead(void **, int); 340#ifdef VIMAGE 341extern int in6_detachhead(void **, int); 342#endif 343 344struct domain inet6domain = { 345 .dom_family = AF_INET6, 346 .dom_name = "internet6", 347 .dom_protosw = (struct protosw *)inet6sw, 348 .dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)], 349#ifdef RADIX_MPATH 350 .dom_rtattach = rn6_mpath_inithead, 351#else 352 .dom_rtattach = in6_inithead, 353#endif 354#ifdef VIMAGE 355 .dom_rtdetach = in6_detachhead, 356#endif 357 .dom_ifattach = in6_domifattach, 358 .dom_ifdetach = in6_domifdetach, 359 .dom_ifmtu = in6_domifmtu 360}; 361 362VNET_DOMAIN_SET(inet6); 363 364/* 365 * Internet configuration info 366 */ 367#ifndef IPV6FORWARDING 368#ifdef GATEWAY6 369#define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 370#else 371#define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 372#endif /* GATEWAY6 */ 373#endif /* !IPV6FORWARDING */ 374 375#ifndef IPV6_SENDREDIRECTS 376#define IPV6_SENDREDIRECTS 1 377#endif 378 379VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */ 380VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS; 381VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM; 382VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS; 383VNET_DEFINE(int, ip6_accept_rtadv) = 0; 384VNET_DEFINE(int, ip6_no_radr) = 0; 385VNET_DEFINE(int, ip6_norbit_raif) = 0; 386VNET_DEFINE(int, ip6_rfc6204w3) = 0; 387VNET_DEFINE(int, ip6_log_interval) = 5; 388VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we 389 * process? */ 390VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */ 391VNET_DEFINE(int, ip6_auto_flowlabel) = 1; 392VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr 393 * (RFC2462 5.5.4) */ 394VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix 395 * walk list every 5 sec. */ 396VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */ 397VNET_DEFINE(int, ip6_v6only) = 1; 398 399VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L; 400#ifdef IPSTEALTH 401VNET_DEFINE(int, ip6stealth) = 0; 402#endif 403VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS 404 * (RFC 4861) */ 405 406/* icmp6 */ 407/* 408 * BSDI4 defines these variables in in_proto.c... 409 * XXX: what if we don't define INET? Should we define pmtu6_expire 410 * or so? (jinmei@kame.net 19990310) 411 */ 412VNET_DEFINE(int, pmtu_expire) = 60*10; 413VNET_DEFINE(int, pmtu_probe) = 60*2; 414 415/* ICMPV6 parameters */ 416VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */ 417VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */ 418VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */ 419/* control how to respond to NI queries */ 420VNET_DEFINE(int, icmp6_nodeinfo) = 421 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK); 422VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1; 423 424/* 425 * sysctl related items. 426 */ 427SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, 428 "Internet6 Family"); 429 430/* net.inet6 */ 431SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); 432SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); 433SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); 434SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); 435#if defined(SCTP) || defined(SCTP_SUPPORT) 436SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6"); 437#endif 438#if defined(IPSEC) || defined(IPSEC_SUPPORT) 439SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); 440#endif /* IPSEC */ 441 442/* net.inet6.ip6 */ 443static int 444sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS) 445{ 446 int error, val; 447 448 val = V_ip6_temp_preferred_lifetime; 449 error = sysctl_handle_int(oidp, &val, 0, req); 450 if (error != 0 || !req->newptr) 451 return (error); 452 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance) 453 return (EINVAL); 454 V_ip6_temp_preferred_lifetime = val; 455 return (0); 456} 457 458static int 459sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS) 460{ 461 int error, val; 462 463 val = V_ip6_temp_valid_lifetime; 464 error = sysctl_handle_int(oidp, &val, 0, req); 465 if (error != 0 || !req->newptr) 466 return (error); 467 if (val < V_ip6_temp_preferred_lifetime) 468 return (EINVAL); 469 V_ip6_temp_valid_lifetime = val; 470 return (0); 471} 472 473SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, 474 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0, 475 "Enable forwarding of IPv6 packets between interfaces"); 476SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, 477 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0, 478 "Send ICMPv6 redirects for unforwardable IPv6 packets"); 479SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, 480 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0, 481 "Default hop limit to use for outgoing IPv6 packets"); 482SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat, 483 ip6stat, 484 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)"); 485SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv, 486 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0, 487 "Default value of per-interface flag for accepting ICMPv6 RA messages"); 488SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr, 489 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0, 490 "Default value of per-interface flag to control whether routers " 491 "sending ICMPv6 RA messages on that interface are added into the " 492 "default router list"); 493SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif, 494 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0, 495 "Always set clear the R flag in ICMPv6 NA messages when accepting RA " 496 "on the interface"); 497SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3, 498 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0, 499 "Accept the default router list from ICMPv6 RA messages even " 500 "when packet forwarding is enabled"); 501SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval, 502 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, 503 "Frequency in seconds at which to log IPv6 forwarding errors"); 504SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit, 505 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, 506 "Default maximum number of IPv6 extension headers permitted on " 507 "incoming IPv6 packets, 0 for no artificial limit"); 508SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, 509 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0, 510 "Number of ICMPv6 NS messages sent during duplicate address detection"); 511SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel, 512 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, 513 "Provide an IPv6 flowlabel in outbound packets"); 514SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim, 515 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, 516 "Default hop limit for IPv6 multicast packets originating from this " 517 "node"); 518SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version, 519 CTLFLAG_RD, __KAME_VERSION, 0, 520 "KAME version string"); 521SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated, 522 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, 523 "Allow the use of addresses whose preferred lifetimes have expired"); 524SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, 525 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0, 526 ""); /* XXX unused */ 527SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr, 528 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, 529 "Create RFC3041 temporary addresses for autoconfigured addresses"); 530SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime, 531 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 532 NULL, 0, sysctl_ip6_temppltime, "I", 533 "Maximum preferred lifetime for temporary addresses"); 534SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime, 535 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 536 NULL, 0, sysctl_ip6_tempvltime, "I", 537 "Maximum valid lifetime for temporary addresses"); 538SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only, 539 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0, 540 "Restrict AF_INET6 sockets to IPv6 addresses only"); 541SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal, 542 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0, 543 "Default value of per-interface flag for automatically adding an IPv6 " 544 "link-local address to interfaces when attached"); 545SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, 546 struct rip6stat, rip6stat, 547 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)"); 548SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr, 549 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0, 550 "Prefer RFC3041 temporary addresses in source address selection"); 551SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone, 552 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0, 553 "Use the default scope zone when none is specified"); 554SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu, 555 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0, 556 "Enable path MTU discovery for multicast packets"); 557#ifdef IPSTEALTH 558SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW, 559 &VNET_NAME(ip6stealth), 0, 560 "Forward IPv6 packets without decrementing their TTL"); 561#endif 562 563/* net.inet6.icmp6 */ 564SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept, 565 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0, 566 "Accept ICMPv6 redirect messages"); 567SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout, 568 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0, 569 ""); /* XXX unused */ 570SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, 571 struct icmp6stat, icmp6stat, 572 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)"); 573SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, 574 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0, 575 "Frequency in seconds of checks for expired prefixes and routers"); 576SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, 577 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0, 578 "Delay in seconds before probing for reachability"); 579SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries, 580 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0, 581 "Number of ICMPv6 NS messages sent during reachability detection"); 582SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries, 583 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0, 584 "Number of ICMPv6 NS messages sent during address resolution"); 585SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback, 586 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0, 587 "Create a loopback route when configuring an IPv6 address"); 588SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo, 589 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0, 590 "Mask of enabled RFC4620 node information query types"); 591SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX, 592 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW, 593 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0, 594 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup " 595 "for compatibility with KAME implementation"); 596SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit, 597 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, 598 "Maximum number of ICMPv6 error messages per second"); 599SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint, 600 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0, 601 ""); /* XXX unused */ 602SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug, 603 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0, 604 "Log NDP debug messages"); 605SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861, 606 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW, 607 &VNET_NAME(nd6_onlink_ns_rfc4861), 0, 608 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861"); 609