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 */ 131 FEATURE(inet6, "Internet Protocol version 6"); 132 133 extern struct domain inet6domain; 134 static 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 } 146 147 struct 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_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_init = encap_init, 286 .pr_usrreqs = &rip6_usrreqs 287 }, 288 #endif /* INET */ 289 { 290 .pr_type = SOCK_RAW, 291 .pr_domain = &inet6domain, 292 .pr_protocol = IPPROTO_IPV6, 293 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 294 .pr_input = encap6_input, 295 .pr_output = rip6_output, 296 .pr_ctloutput = rip6_ctloutput, 297 .pr_init = encap_init, 298 .pr_usrreqs = &rip6_usrreqs 299 }, 300 { 301 .pr_type = SOCK_RAW, 302 .pr_domain = &inet6domain, 303 .pr_protocol = IPPROTO_GRE, 304 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 305 .pr_input = encap6_input, 306 .pr_output = rip6_output, 307 .pr_ctloutput = rip6_ctloutput, 308 .pr_init = encap_init, 309 .pr_usrreqs = &rip6_usrreqs 310 }, 311 { 312 .pr_type = SOCK_RAW, 313 .pr_domain = &inet6domain, 314 .pr_protocol = IPPROTO_PIM, 315 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 316 .pr_input = encap6_input, 317 .pr_output = rip6_output, 318 .pr_ctloutput = rip6_ctloutput, 319 .pr_usrreqs = &rip6_usrreqs 320 }, 321 /* Spacer n-times for loadable protocols. */ 322 IP6PROTOSPACER, 323 IP6PROTOSPACER, 324 IP6PROTOSPACER, 325 IP6PROTOSPACER, 326 IP6PROTOSPACER, 327 IP6PROTOSPACER, 328 IP6PROTOSPACER, 329 IP6PROTOSPACER, 330 /* raw wildcard */ 331 { 332 .pr_type = SOCK_RAW, 333 .pr_domain = &inet6domain, 334 .pr_flags = PR_ATOMIC|PR_ADDR, 335 .pr_input = rip6_input, 336 .pr_output = rip6_output, 337 .pr_ctloutput = rip6_ctloutput, 338 .pr_usrreqs = &rip6_usrreqs 339 }, 340 }; 341 342 extern int in6_inithead(void **, int); 343 #ifdef VIMAGE 344 extern int in6_detachhead(void **, int); 345 #endif 346 347 struct domain inet6domain = { 348 .dom_family = AF_INET6, 349 .dom_name = "internet6", 350 .dom_protosw = (struct protosw *)inet6sw, 351 .dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)], 352 #ifdef RADIX_MPATH 353 .dom_rtattach = rn6_mpath_inithead, 354 #else 355 .dom_rtattach = in6_inithead, 356 #endif 357 #ifdef VIMAGE 358 .dom_rtdetach = in6_detachhead, 359 #endif 360 .dom_ifattach = in6_domifattach, 361 .dom_ifdetach = in6_domifdetach, 362 .dom_ifmtu = in6_domifmtu 363 }; 364 365 VNET_DOMAIN_SET(inet6); 366 367 /* 368 * Internet configuration info 369 */ 370 #ifndef IPV6FORWARDING 371 #ifdef GATEWAY6 372 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 373 #else 374 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 375 #endif /* GATEWAY6 */ 376 #endif /* !IPV6FORWARDING */ 377 378 #ifndef IPV6_SENDREDIRECTS 379 #define IPV6_SENDREDIRECTS 1 380 #endif 381 382 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */ 383 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS; 384 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM; 385 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS; 386 VNET_DEFINE(int, ip6_accept_rtadv) = 0; 387 VNET_DEFINE(int, ip6_no_radr) = 0; 388 VNET_DEFINE(int, ip6_norbit_raif) = 0; 389 VNET_DEFINE(int, ip6_rfc6204w3) = 0; 390 VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */ 391 VNET_DEFINE(int, ip6_maxfrags); /* initialized in frag6.c:frag6_init() */ 392 VNET_DEFINE(int, ip6_log_interval) = 5; 393 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we 394 * process? */ 395 VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */ 396 VNET_DEFINE(int, ip6_auto_flowlabel) = 1; 397 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr 398 * (RFC2462 5.5.4) */ 399 VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix 400 * walk list every 5 sec. */ 401 VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */ 402 VNET_DEFINE(int, ip6_v6only) = 1; 403 404 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L; 405 #ifdef IPSTEALTH 406 VNET_DEFINE(int, ip6stealth) = 0; 407 #endif 408 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS 409 * (RFC 4861) */ 410 411 /* icmp6 */ 412 /* 413 * BSDI4 defines these variables in in_proto.c... 414 * XXX: what if we don't define INET? Should we define pmtu6_expire 415 * or so? (jinmei@kame.net 19990310) 416 */ 417 VNET_DEFINE(int, pmtu_expire) = 60*10; 418 VNET_DEFINE(int, pmtu_probe) = 60*2; 419 420 /* ICMPV6 parameters */ 421 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */ 422 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */ 423 VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */ 424 /* control how to respond to NI queries */ 425 VNET_DEFINE(int, icmp6_nodeinfo) = 426 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK); 427 VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1; 428 429 /* 430 * sysctl related items. 431 */ 432 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, 433 "Internet6 Family"); 434 435 /* net.inet6 */ 436 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); 437 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); 438 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); 439 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); 440 #ifdef SCTP 441 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6"); 442 #endif 443 #if defined(IPSEC) || defined(IPSEC_SUPPORT) 444 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); 445 #endif /* IPSEC */ 446 447 /* net.inet6.ip6 */ 448 static int 449 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS) 450 { 451 int error, val; 452 453 val = V_ip6_temp_preferred_lifetime; 454 error = sysctl_handle_int(oidp, &val, 0, req); 455 if (error != 0 || !req->newptr) 456 return (error); 457 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance) 458 return (EINVAL); 459 V_ip6_temp_preferred_lifetime = val; 460 return (0); 461 } 462 463 static int 464 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS) 465 { 466 int error, val; 467 468 val = V_ip6_temp_valid_lifetime; 469 error = sysctl_handle_int(oidp, &val, 0, req); 470 if (error != 0 || !req->newptr) 471 return (error); 472 if (val < V_ip6_temp_preferred_lifetime) 473 return (EINVAL); 474 V_ip6_temp_valid_lifetime = val; 475 return (0); 476 } 477 478 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, 479 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0, 480 "Enable forwarding of IPv6 packets between interfaces"); 481 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, 482 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0, 483 "Send ICMPv6 redirects for unforwardable IPv6 packets"); 484 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, 485 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0, 486 "Default hop limit to use for outgoing IPv6 packets"); 487 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat, 488 ip6stat, 489 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)"); 490 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets, 491 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0, 492 "Default maximum number of outstanding fragmented IPv6 packets. " 493 "A value of 0 means no fragmented packets will be accepted, while a " 494 "a value of -1 means no limit"); 495 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv, 496 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0, 497 "Default value of per-interface flag for accepting ICMPv6 RA messages"); 498 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr, 499 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0, 500 "Default value of per-interface flag to control whether routers " 501 "sending ICMPv6 RA messages on that interface are added into the " 502 "default router list"); 503 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif, 504 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0, 505 "Always set clear the R flag in ICMPv6 NA messages when accepting RA " 506 "on the interface"); 507 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3, 508 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0, 509 "Accept the default router list from ICMPv6 RA messages even " 510 "when packet forwarding is enabled"); 511 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval, 512 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, 513 "Frequency in seconds at which to log IPv6 forwarding errors"); 514 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit, 515 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, 516 "Default maximum number of IPv6 extension headers permitted on " 517 "incoming IPv6 packets, 0 for no artificial limit"); 518 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, 519 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0, 520 "Number of ICMPv6 NS messages sent during duplicate address detection"); 521 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel, 522 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, 523 "Provide an IPv6 flowlabel in outbound packets"); 524 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim, 525 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, 526 "Default hop limit for IPv6 multicast packets originating from this " 527 "node"); 528 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version, 529 CTLFLAG_RD, __KAME_VERSION, 0, 530 "KAME version string"); 531 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated, 532 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, 533 "Allow the use of addresses whose preferred lifetimes have expired"); 534 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, 535 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0, 536 ""); /* XXX unused */ 537 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr, 538 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, 539 "Create RFC3041 temporary addresses for autoconfigured addresses"); 540 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime, 541 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 542 NULL, 0, sysctl_ip6_temppltime, "I", 543 "Maximum preferred lifetime for temporary addresses"); 544 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime, 545 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 546 NULL, 0, sysctl_ip6_tempvltime, "I", 547 "Maximum valid lifetime for temporary addresses"); 548 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only, 549 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0, 550 "Restrict AF_INET6 sockets to IPv6 addresses only"); 551 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal, 552 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0, 553 "Default value of per-interface flag for automatically adding an IPv6 " 554 "link-local address to interfaces when attached"); 555 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, 556 struct rip6stat, rip6stat, 557 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)"); 558 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr, 559 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0, 560 "Prefer RFC3041 temporary addresses in source address selection"); 561 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone, 562 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0, 563 "Use the default scope zone when none is specified"); 564 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags, 565 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfrags), 0, 566 "Maximum allowed number of outstanding IPv6 packet fragments"); 567 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu, 568 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0, 569 "Enable path MTU discovery for multicast packets"); 570 #ifdef IPSTEALTH 571 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW, 572 &VNET_NAME(ip6stealth), 0, 573 "Forward IPv6 packets without decrementing their TTL"); 574 #endif 575 576 /* net.inet6.icmp6 */ 577 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept, 578 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0, 579 "Accept ICMPv6 redirect messages"); 580 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout, 581 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0, 582 ""); /* XXX unused */ 583 SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, 584 struct icmp6stat, icmp6stat, 585 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)"); 586 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, 587 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0, 588 "Frequency in seconds of checks for expired prefixes and routers"); 589 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, 590 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0, 591 "Delay in seconds before probing for reachability"); 592 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries, 593 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0, 594 "Number of ICMPv6 NS messages sent during reachability detection"); 595 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries, 596 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0, 597 "Number of ICMPv6 NS messages sent during address resolution"); 598 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback, 599 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0, 600 "Create a loopback route when configuring an IPv6 address"); 601 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo, 602 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0, 603 "Mask of enabled RF4620 node information query types"); 604 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX, 605 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW, 606 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0, 607 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup " 608 "for compatibility with KAME implementation"); 609 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit, 610 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, 611 "Maximum number of ICMPv6 error messages per second"); 612 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint, 613 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0, 614 ""); /* XXX unused */ 615 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug, 616 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0, 617 "Log NDP debug messages"); 618 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861, 619 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW, 620 &VNET_NAME(nd6_onlink_ns_rfc4861), 0, 621 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861"); 622