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_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. */ 319 IP6PROTOSPACER, 320 IP6PROTOSPACER, 321 IP6PROTOSPACER, 322 IP6PROTOSPACER, 323 IP6PROTOSPACER, 324 IP6PROTOSPACER, 325 IP6PROTOSPACER, 326 IP6PROTOSPACER, 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 }; 338 339 extern int in6_inithead(void **, int); 340 #ifdef VIMAGE 341 extern int in6_detachhead(void **, int); 342 #endif 343 344 struct 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 }; 361 362 VNET_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 378 379 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */ 380 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS; 381 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM; 382 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS; 383 VNET_DEFINE(int, ip6_accept_rtadv) = 0; 384 VNET_DEFINE(int, ip6_no_radr) = 0; 385 VNET_DEFINE(int, ip6_norbit_raif) = 0; 386 VNET_DEFINE(int, ip6_rfc6204w3) = 0; 387 VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */ 388 int ip6_maxfrags; /* initialized in frag6.c:frag6_init() */ 389 VNET_DEFINE(int, ip6_maxfragbucketsize);/* initialized in frag6.c:frag6_init() */ 390 VNET_DEFINE(int, ip6_maxfragsperpacket); /* initialized in frag6.c:frag6_init() */ 391 VNET_DEFINE(int, ip6_log_interval) = 5; 392 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we 393 * process? */ 394 VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */ 395 VNET_DEFINE(int, ip6_auto_flowlabel) = 1; 396 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr 397 * (RFC2462 5.5.4) */ 398 VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix 399 * walk list every 5 sec. */ 400 VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */ 401 VNET_DEFINE(int, ip6_v6only) = 1; 402 403 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L; 404 #ifdef IPSTEALTH 405 VNET_DEFINE(int, ip6stealth) = 0; 406 #endif 407 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS 408 * (RFC 4861) */ 409 410 /* icmp6 */ 411 /* 412 * BSDI4 defines these variables in in_proto.c... 413 * XXX: what if we don't define INET? Should we define pmtu6_expire 414 * or so? (jinmei@kame.net 19990310) 415 */ 416 VNET_DEFINE(int, pmtu_expire) = 60*10; 417 VNET_DEFINE(int, pmtu_probe) = 60*2; 418 419 /* ICMPV6 parameters */ 420 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */ 421 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */ 422 VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */ 423 /* control how to respond to NI queries */ 424 VNET_DEFINE(int, icmp6_nodeinfo) = 425 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK); 426 VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1; 427 428 /* 429 * sysctl related items. 430 */ 431 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, 432 "Internet6 Family"); 433 434 /* net.inet6 */ 435 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); 436 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); 437 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); 438 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); 439 #ifdef SCTP 440 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6"); 441 #endif 442 #if defined(IPSEC) || defined(IPSEC_SUPPORT) 443 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); 444 #endif /* IPSEC */ 445 446 /* net.inet6.ip6 */ 447 static int 448 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS) 449 { 450 int error, val; 451 452 val = V_ip6_temp_preferred_lifetime; 453 error = sysctl_handle_int(oidp, &val, 0, req); 454 if (error != 0 || !req->newptr) 455 return (error); 456 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance) 457 return (EINVAL); 458 V_ip6_temp_preferred_lifetime = val; 459 return (0); 460 } 461 462 static int 463 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS) 464 { 465 int error, val; 466 467 val = V_ip6_temp_valid_lifetime; 468 error = sysctl_handle_int(oidp, &val, 0, req); 469 if (error != 0 || !req->newptr) 470 return (error); 471 if (val < V_ip6_temp_preferred_lifetime) 472 return (EINVAL); 473 V_ip6_temp_valid_lifetime = val; 474 return (0); 475 } 476 477 static int 478 sysctl_ip6_maxfragpackets(SYSCTL_HANDLER_ARGS) 479 { 480 int error, val; 481 482 val = V_ip6_maxfragpackets; 483 error = sysctl_handle_int(oidp, &val, 0, req); 484 if (error != 0 || !req->newptr) 485 return (error); 486 V_ip6_maxfragpackets = val; 487 frag6_set_bucketsize(); 488 return (0); 489 } 490 491 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, 492 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0, 493 "Enable forwarding of IPv6 packets between interfaces"); 494 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, 495 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0, 496 "Send ICMPv6 redirects for unforwardable IPv6 packets"); 497 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, 498 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0, 499 "Default hop limit to use for outgoing IPv6 packets"); 500 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat, 501 ip6stat, 502 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)"); 503 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets, 504 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, NULL, 0, 505 sysctl_ip6_maxfragpackets, "I", 506 "Default maximum number of outstanding fragmented IPv6 packets. " 507 "A value of 0 means no fragmented packets will be accepted, while a " 508 "a value of -1 means no limit"); 509 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv, 510 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0, 511 "Default value of per-interface flag for accepting ICMPv6 RA messages"); 512 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr, 513 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0, 514 "Default value of per-interface flag to control whether routers " 515 "sending ICMPv6 RA messages on that interface are added into the " 516 "default router list"); 517 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif, 518 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0, 519 "Always set clear the R flag in ICMPv6 NA messages when accepting RA " 520 "on the interface"); 521 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3, 522 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0, 523 "Accept the default router list from ICMPv6 RA messages even " 524 "when packet forwarding is enabled"); 525 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval, 526 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, 527 "Frequency in seconds at which to log IPv6 forwarding errors"); 528 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit, 529 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, 530 "Default maximum number of IPv6 extension headers permitted on " 531 "incoming IPv6 packets, 0 for no artificial limit"); 532 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, 533 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0, 534 "Number of ICMPv6 NS messages sent during duplicate address detection"); 535 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel, 536 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, 537 "Provide an IPv6 flowlabel in outbound packets"); 538 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim, 539 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, 540 "Default hop limit for IPv6 multicast packets originating from this " 541 "node"); 542 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version, 543 CTLFLAG_RD, __KAME_VERSION, 0, 544 "KAME version string"); 545 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated, 546 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, 547 "Allow the use of addresses whose preferred lifetimes have expired"); 548 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, 549 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0, 550 ""); /* XXX unused */ 551 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr, 552 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, 553 "Create RFC3041 temporary addresses for autoconfigured addresses"); 554 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime, 555 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 556 NULL, 0, sysctl_ip6_temppltime, "I", 557 "Maximum preferred lifetime for temporary addresses"); 558 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime, 559 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 560 NULL, 0, sysctl_ip6_tempvltime, "I", 561 "Maximum valid lifetime for temporary addresses"); 562 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only, 563 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0, 564 "Restrict AF_INET6 sockets to IPv6 addresses only"); 565 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal, 566 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0, 567 "Default value of per-interface flag for automatically adding an IPv6 " 568 "link-local address to interfaces when attached"); 569 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, 570 struct rip6stat, rip6stat, 571 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)"); 572 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr, 573 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0, 574 "Prefer RFC3041 temporary addresses in source address selection"); 575 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone, 576 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0, 577 "Use the default scope zone when none is specified"); 578 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags, 579 CTLFLAG_RW, &ip6_maxfrags, 0, 580 "Maximum allowed number of outstanding IPv6 packet fragments. " 581 "A value of 0 means no fragmented packets will be accepted, while a " 582 "a value of -1 means no limit"); 583 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGBUCKETSIZE, maxfragbucketsize, 584 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragbucketsize), 0, 585 "Maximum number of reassembly queues per hash bucket"); 586 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGSPERPACKET, maxfragsperpacket, 587 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragsperpacket), 0, 588 "Maximum allowed number of fragments per packet"); 589 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu, 590 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0, 591 "Enable path MTU discovery for multicast packets"); 592 #ifdef IPSTEALTH 593 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW, 594 &VNET_NAME(ip6stealth), 0, 595 "Forward IPv6 packets without decrementing their TTL"); 596 #endif 597 598 /* net.inet6.icmp6 */ 599 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept, 600 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0, 601 "Accept ICMPv6 redirect messages"); 602 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout, 603 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0, 604 ""); /* XXX unused */ 605 SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, 606 struct icmp6stat, icmp6stat, 607 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)"); 608 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, 609 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0, 610 "Frequency in seconds of checks for expired prefixes and routers"); 611 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, 612 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0, 613 "Delay in seconds before probing for reachability"); 614 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries, 615 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0, 616 "Number of ICMPv6 NS messages sent during reachability detection"); 617 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries, 618 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0, 619 "Number of ICMPv6 NS messages sent during address resolution"); 620 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback, 621 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0, 622 "Create a loopback route when configuring an IPv6 address"); 623 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo, 624 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0, 625 "Mask of enabled RF4620 node information query types"); 626 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX, 627 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW, 628 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0, 629 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup " 630 "for compatibility with KAME implementation"); 631 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit, 632 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, 633 "Maximum number of ICMPv6 error messages per second"); 634 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint, 635 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0, 636 ""); /* XXX unused */ 637 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug, 638 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0, 639 "Log NDP debug messages"); 640 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861, 641 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW, 642 &VNET_NAME(nd6_onlink_ns_rfc4861), 0, 643 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861"); 644