in6_proto.c revision 331722
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: stable/11/sys/netinet6/in6_proto.c 331722 2018-03-29 02:50:57Z eadler $"); 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#include <netinet6/ip6protosw.h> 125 126/* 127 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. 128 */ 129FEATURE(inet6, "Internet Protocol version 6"); 130 131extern struct domain inet6domain; 132static struct pr_usrreqs nousrreqs; 133 134#define PR_LISTEN 0 135#define PR_ABRTACPTDIS 0 136 137/* Spacer for loadable protocols. */ 138#define IP6PROTOSPACER \ 139{ \ 140 .pr_domain = &inet6domain, \ 141 .pr_protocol = PROTO_SPACER, \ 142 .pr_usrreqs = &nousrreqs \ 143} 144 145struct protosw inet6sw[] = { 146{ 147 .pr_type = 0, 148 .pr_domain = &inet6domain, 149 .pr_protocol = IPPROTO_IPV6, 150 .pr_init = ip6_init, 151 .pr_slowtimo = frag6_slowtimo, 152 .pr_drain = frag6_drain, 153 .pr_usrreqs = &nousrreqs, 154}, 155{ 156 .pr_type = SOCK_DGRAM, 157 .pr_domain = &inet6domain, 158 .pr_protocol = IPPROTO_UDP, 159 .pr_flags = PR_ATOMIC|PR_ADDR, 160 .pr_input = udp6_input, 161 .pr_ctlinput = udp6_ctlinput, 162 .pr_ctloutput = ip6_ctloutput, 163#ifndef INET /* Do not call initialization twice. */ 164 .pr_init = udp_init, 165#endif 166 .pr_usrreqs = &udp6_usrreqs, 167}, 168{ 169 .pr_type = SOCK_STREAM, 170 .pr_domain = &inet6domain, 171 .pr_protocol = IPPROTO_TCP, 172 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN, 173 .pr_input = tcp6_input, 174 .pr_ctlinput = tcp6_ctlinput, 175 .pr_ctloutput = tcp_ctloutput, 176#ifndef INET /* don't call initialization and timeout routines twice */ 177 .pr_init = tcp_init, 178 .pr_slowtimo = tcp_slowtimo, 179#endif 180 .pr_drain = tcp_drain, 181 .pr_usrreqs = &tcp6_usrreqs, 182}, 183#ifdef SCTP 184{ 185 .pr_type = SOCK_SEQPACKET, 186 .pr_domain = &inet6domain, 187 .pr_protocol = IPPROTO_SCTP, 188 .pr_flags = PR_WANTRCVD|PR_LASTHDR, 189 .pr_input = sctp6_input, 190 .pr_ctlinput = sctp6_ctlinput, 191 .pr_ctloutput = sctp_ctloutput, 192 .pr_drain = sctp_drain, 193#ifndef INET /* Do not call initialization twice. */ 194 .pr_init = sctp_init, 195#endif 196 .pr_usrreqs = &sctp6_usrreqs 197}, 198{ 199 .pr_type = SOCK_STREAM, 200 .pr_domain = &inet6domain, 201 .pr_protocol = IPPROTO_SCTP, 202 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR, 203 .pr_input = sctp6_input, 204 .pr_ctlinput = sctp6_ctlinput, 205 .pr_ctloutput = sctp_ctloutput, 206 .pr_drain = sctp_drain, 207 .pr_usrreqs = &sctp6_usrreqs 208}, 209#endif /* SCTP */ 210{ 211 .pr_type = SOCK_DGRAM, 212 .pr_domain = &inet6domain, 213 .pr_protocol = IPPROTO_UDPLITE, 214 .pr_flags = PR_ATOMIC|PR_ADDR, 215 .pr_input = udp6_input, 216 .pr_ctlinput = udplite6_ctlinput, 217 .pr_ctloutput = udp_ctloutput, 218#ifndef INET /* Do not call initialization twice. */ 219 .pr_init = udplite_init, 220#endif 221 .pr_usrreqs = &udp6_usrreqs, 222}, 223{ 224 .pr_type = SOCK_RAW, 225 .pr_domain = &inet6domain, 226 .pr_protocol = IPPROTO_RAW, 227 .pr_flags = PR_ATOMIC|PR_ADDR, 228 .pr_input = rip6_input, 229 .pr_output = rip6_output, 230 .pr_ctlinput = rip6_ctlinput, 231 .pr_ctloutput = rip6_ctloutput, 232#ifndef INET /* Do not call initialization twice. */ 233 .pr_init = rip_init, 234#endif 235 .pr_usrreqs = &rip6_usrreqs 236}, 237{ 238 .pr_type = SOCK_RAW, 239 .pr_domain = &inet6domain, 240 .pr_protocol = IPPROTO_ICMPV6, 241 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 242 .pr_input = icmp6_input, 243 .pr_output = rip6_output, 244 .pr_ctlinput = rip6_ctlinput, 245 .pr_ctloutput = rip6_ctloutput, 246 .pr_fasttimo = icmp6_fasttimo, 247 .pr_slowtimo = icmp6_slowtimo, 248 .pr_usrreqs = &rip6_usrreqs 249}, 250{ 251 .pr_type = SOCK_RAW, 252 .pr_domain = &inet6domain, 253 .pr_protocol = IPPROTO_DSTOPTS, 254 .pr_flags = PR_ATOMIC|PR_ADDR, 255 .pr_input = dest6_input, 256 .pr_usrreqs = &nousrreqs 257}, 258{ 259 .pr_type = SOCK_RAW, 260 .pr_domain = &inet6domain, 261 .pr_protocol = IPPROTO_ROUTING, 262 .pr_flags = PR_ATOMIC|PR_ADDR, 263 .pr_input = route6_input, 264 .pr_usrreqs = &nousrreqs 265}, 266{ 267 .pr_type = SOCK_RAW, 268 .pr_domain = &inet6domain, 269 .pr_protocol = IPPROTO_FRAGMENT, 270 .pr_flags = PR_ATOMIC|PR_ADDR, 271 .pr_input = frag6_input, 272 .pr_usrreqs = &nousrreqs 273}, 274#ifdef INET 275{ 276 .pr_type = SOCK_RAW, 277 .pr_domain = &inet6domain, 278 .pr_protocol = IPPROTO_IPV4, 279 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 280 .pr_input = encap6_input, 281 .pr_output = rip6_output, 282 .pr_ctloutput = rip6_ctloutput, 283 .pr_init = encap_init, 284 .pr_usrreqs = &rip6_usrreqs 285}, 286#endif /* INET */ 287{ 288 .pr_type = SOCK_RAW, 289 .pr_domain = &inet6domain, 290 .pr_protocol = IPPROTO_IPV6, 291 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 292 .pr_input = encap6_input, 293 .pr_output = rip6_output, 294 .pr_ctloutput = rip6_ctloutput, 295 .pr_init = encap_init, 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_init = encap_init, 307 .pr_usrreqs = &rip6_usrreqs 308}, 309{ 310 .pr_type = SOCK_RAW, 311 .pr_domain = &inet6domain, 312 .pr_protocol = IPPROTO_PIM, 313 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 314 .pr_input = encap6_input, 315 .pr_output = rip6_output, 316 .pr_ctloutput = rip6_ctloutput, 317 .pr_usrreqs = &rip6_usrreqs 318}, 319/* Spacer n-times for loadable protocols. */ 320IP6PROTOSPACER, 321IP6PROTOSPACER, 322IP6PROTOSPACER, 323IP6PROTOSPACER, 324IP6PROTOSPACER, 325IP6PROTOSPACER, 326IP6PROTOSPACER, 327IP6PROTOSPACER, 328/* raw wildcard */ 329{ 330 .pr_type = SOCK_RAW, 331 .pr_domain = &inet6domain, 332 .pr_flags = PR_ATOMIC|PR_ADDR, 333 .pr_input = rip6_input, 334 .pr_output = rip6_output, 335 .pr_ctloutput = rip6_ctloutput, 336 .pr_usrreqs = &rip6_usrreqs 337}, 338}; 339 340extern int in6_inithead(void **, int); 341#ifdef VIMAGE 342extern int in6_detachhead(void **, int); 343#endif 344 345struct domain inet6domain = { 346 .dom_family = AF_INET6, 347 .dom_name = "internet6", 348 .dom_protosw = (struct protosw *)inet6sw, 349 .dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)], 350#ifdef RADIX_MPATH 351 .dom_rtattach = rn6_mpath_inithead, 352#else 353 .dom_rtattach = in6_inithead, 354#endif 355#ifdef VIMAGE 356 .dom_rtdetach = in6_detachhead, 357#endif 358 .dom_ifattach = in6_domifattach, 359 .dom_ifdetach = in6_domifdetach, 360 .dom_ifmtu = in6_domifmtu 361}; 362 363VNET_DOMAIN_SET(inet6); 364 365/* 366 * Internet configuration info 367 */ 368#ifndef IPV6FORWARDING 369#ifdef GATEWAY6 370#define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 371#else 372#define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 373#endif /* GATEWAY6 */ 374#endif /* !IPV6FORWARDING */ 375 376#ifndef IPV6_SENDREDIRECTS 377#define IPV6_SENDREDIRECTS 1 378#endif 379 380VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */ 381VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS; 382VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM; 383VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS; 384VNET_DEFINE(int, ip6_accept_rtadv) = 0; 385VNET_DEFINE(int, ip6_no_radr) = 0; 386VNET_DEFINE(int, ip6_norbit_raif) = 0; 387VNET_DEFINE(int, ip6_rfc6204w3) = 0; 388VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */ 389VNET_DEFINE(int, ip6_maxfrags); /* initialized in frag6.c:frag6_init() */ 390VNET_DEFINE(int, ip6_log_interval) = 5; 391VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we 392 * process? */ 393VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */ 394VNET_DEFINE(int, ip6_auto_flowlabel) = 1; 395VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr 396 * (RFC2462 5.5.4) */ 397VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix 398 * walk list every 5 sec. */ 399VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */ 400VNET_DEFINE(int, ip6_v6only) = 1; 401 402VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L; 403#ifdef IPSTEALTH 404VNET_DEFINE(int, ip6stealth) = 0; 405#endif 406VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS 407 * (RFC 4861) */ 408 409/* icmp6 */ 410/* 411 * BSDI4 defines these variables in in_proto.c... 412 * XXX: what if we don't define INET? Should we define pmtu6_expire 413 * or so? (jinmei@kame.net 19990310) 414 */ 415VNET_DEFINE(int, pmtu_expire) = 60*10; 416VNET_DEFINE(int, pmtu_probe) = 60*2; 417 418/* ICMPV6 parameters */ 419VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */ 420VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */ 421VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */ 422/* control how to respond to NI queries */ 423VNET_DEFINE(int, icmp6_nodeinfo) = 424 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK); 425VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1; 426 427/* 428 * sysctl related items. 429 */ 430SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, 431 "Internet6 Family"); 432 433/* net.inet6 */ 434SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); 435SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); 436SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); 437SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); 438#ifdef SCTP 439SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6"); 440#endif 441#if defined(IPSEC) || defined(IPSEC_SUPPORT) 442SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); 443#endif /* IPSEC */ 444 445/* net.inet6.ip6 */ 446static int 447sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS) 448{ 449 int error, val; 450 451 val = V_ip6_temp_preferred_lifetime; 452 error = sysctl_handle_int(oidp, &val, 0, req); 453 if (error != 0 || !req->newptr) 454 return (error); 455 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance) 456 return (EINVAL); 457 V_ip6_temp_preferred_lifetime = val; 458 return (0); 459} 460 461static int 462sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS) 463{ 464 int error, val; 465 466 val = V_ip6_temp_valid_lifetime; 467 error = sysctl_handle_int(oidp, &val, 0, req); 468 if (error != 0 || !req->newptr) 469 return (error); 470 if (val < V_ip6_temp_preferred_lifetime) 471 return (EINVAL); 472 V_ip6_temp_valid_lifetime = val; 473 return (0); 474} 475 476SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, 477 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0, 478 "Enable forwarding of IPv6 packets between interfaces"); 479SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, 480 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0, 481 "Send ICMPv6 redirects for unforwardable IPv6 packets"); 482SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, 483 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0, 484 "Default hop limit to use for outgoing IPv6 packets"); 485SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat, 486 ip6stat, 487 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)"); 488SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets, 489 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0, 490 "Default maximum number of outstanding fragmented IPv6 packets. " 491 "A value of 0 means no fragmented packets will be accepted, while a " 492 "a value of -1 means no limit"); 493SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv, 494 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0, 495 "Default value of per-interface flag for accepting ICMPv6 RA messages"); 496SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr, 497 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0, 498 "Default value of per-interface flag to control whether routers " 499 "sending ICMPv6 RA messages on that interface are added into the " 500 "default router list"); 501SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif, 502 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0, 503 "Always set clear the R flag in ICMPv6 NA messages when accepting RA " 504 "on the interface"); 505SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3, 506 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0, 507 "Accept the default router list from ICMPv6 RA messages even " 508 "when packet forwarding is enabled"); 509SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval, 510 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, 511 "Frequency in seconds at which to log IPv6 forwarding errors"); 512SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit, 513 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, 514 "Default maximum number of IPv6 extension headers permitted on " 515 "incoming IPv6 packets, 0 for no artificial limit"); 516SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, 517 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0, 518 "Number of ICMPv6 NS messages sent during duplicate address detection"); 519SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel, 520 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, 521 "Provide an IPv6 flowlabel in outbound packets"); 522SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim, 523 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, 524 "Default hop limit for IPv6 multicast packets originating from this " 525 "node"); 526SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version, 527 CTLFLAG_RD, __KAME_VERSION, 0, 528 "KAME version string"); 529SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated, 530 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, 531 "Allow the use of addresses whose preferred lifetimes have expired"); 532SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, 533 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0, 534 ""); /* XXX unused */ 535SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr, 536 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, 537 "Create RFC3041 temporary addresses for autoconfigured addresses"); 538SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime, 539 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 540 NULL, 0, sysctl_ip6_temppltime, "I", 541 "Maximum preferred lifetime for temporary addresses"); 542SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime, 543 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 544 NULL, 0, sysctl_ip6_tempvltime, "I", 545 "Maximum valid lifetime for temporary addresses"); 546SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only, 547 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0, 548 "Restrict AF_INET6 sockets to IPv6 addresses only"); 549SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal, 550 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0, 551 "Default value of per-interface flag for automatically adding an IPv6 " 552 "link-local address to interfaces when attached"); 553SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, 554 struct rip6stat, rip6stat, 555 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)"); 556SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr, 557 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0, 558 "Prefer RFC3041 temporary addresses in source address selection"); 559SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone, 560 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0, 561 "Use the default scope zone when none is specified"); 562SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags, 563 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfrags), 0, 564 "Maximum allowed number of outstanding IPv6 packet fragments"); 565SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu, 566 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0, 567 "Enable path MTU discovery for multicast packets"); 568#ifdef IPSTEALTH 569SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW, 570 &VNET_NAME(ip6stealth), 0, 571 "Forward IPv6 packets without decrementing their TTL"); 572#endif 573 574/* net.inet6.icmp6 */ 575SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept, 576 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0, 577 "Accept ICMPv6 redirect messages"); 578SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout, 579 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0, 580 ""); /* XXX unused */ 581SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, 582 struct icmp6stat, icmp6stat, 583 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)"); 584SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, 585 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0, 586 "Frequency in seconds of checks for expired prefixes and routers"); 587SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, 588 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0, 589 "Delay in seconds before probing for reachability"); 590SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries, 591 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0, 592 "Number of ICMPv6 NS messages sent during reachability detection"); 593SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries, 594 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0, 595 "Number of ICMPv6 NS messages sent during address resolution"); 596SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback, 597 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0, 598 "Create a loopback route when configuring an IPv6 address"); 599SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo, 600 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0, 601 "Mask of enabled RF4620 node information query types"); 602SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX, 603 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW, 604 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0, 605 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup " 606 "for compatibility with KAME implementation"); 607SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit, 608 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, 609 "Maximum number of ICMPv6 error messages per second"); 610SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint, 611 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0, 612 ""); /* XXX unused */ 613SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug, 614 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0, 615 "Log NDP debug messages"); 616SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861, 617 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW, 618 &VNET_NAME(nd6_onlink_ns_rfc4861), 0, 619 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861"); 620