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("$FreeBSD$"); 65 66 #include "opt_inet.h" 67 #include "opt_inet6.h" 68 #include "opt_ipsec.h" 69 #include "opt_ipstealth.h" 70 #include "opt_sctp.h" 71 #include "opt_mpath.h" 72 #include "opt_route.h" 73 74 #include <sys/param.h> 75 #include <sys/socket.h> 76 #include <sys/socketvar.h> 77 #include <sys/proc.h> 78 #include <sys/protosw.h> 79 #include <sys/jail.h> 80 #include <sys/kernel.h> 81 #include <sys/malloc.h> 82 #include <sys/domain.h> 83 #include <sys/mbuf.h> 84 #include <sys/systm.h> 85 #include <sys/sysctl.h> 86 87 #include <net/if.h> 88 #include <net/if_var.h> 89 #include <net/radix.h> 90 #include <net/route.h> 91 #ifdef RADIX_MPATH 92 #include <net/radix_mpath.h> 93 #endif 94 95 #include <netinet/in.h> 96 #include <netinet/in_systm.h> 97 #include <netinet/in_var.h> 98 #include <netinet/ip_encap.h> 99 #include <netinet/ip.h> 100 #include <netinet/ip_var.h> 101 #include <netinet/ip6.h> 102 #include <netinet6/ip6_var.h> 103 #include <netinet/icmp6.h> 104 105 #include <netinet/tcp.h> 106 #include <netinet/tcp_timer.h> 107 #include <netinet/tcp_var.h> 108 #include <netinet/udp.h> 109 #include <netinet/udp_var.h> 110 #include <netinet6/tcp6_var.h> 111 #include <netinet6/raw_ip6.h> 112 #include <netinet6/udp6_var.h> 113 #include <netinet6/pim6_var.h> 114 #include <netinet6/nd6.h> 115 116 #ifdef SCTP 117 #include <netinet/in_pcb.h> 118 #include <netinet/sctp_pcb.h> 119 #include <netinet/sctp.h> 120 #include <netinet/sctp_var.h> 121 #include <netinet6/sctp6_var.h> 122 #endif /* SCTP */ 123 124 #ifdef IPSEC 125 #include <netipsec/ipsec.h> 126 #include <netipsec/ipsec6.h> 127 #endif /* IPSEC */ 128 129 #include <netinet6/ip6protosw.h> 130 131 /* 132 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. 133 */ 134 FEATURE(inet6, "Internet Protocol version 6"); 135 136 extern struct domain inet6domain; 137 static struct pr_usrreqs nousrreqs; 138 139 #define PR_LISTEN 0 140 #define PR_ABRTACPTDIS 0 141 142 /* Spacer for loadable protocols. */ 143 #define IP6PROTOSPACER \ 144 { \ 145 .pr_domain = &inet6domain, \ 146 .pr_protocol = PROTO_SPACER, \ 147 .pr_usrreqs = &nousrreqs \ 148 } 149 150 struct protosw inet6sw[] = { 151 { 152 .pr_type = 0, 153 .pr_domain = &inet6domain, 154 .pr_protocol = IPPROTO_IPV6, 155 .pr_init = ip6_init, 156 #ifdef VIMAGE 157 .pr_destroy = ip6_destroy, 158 #endif 159 .pr_slowtimo = frag6_slowtimo, 160 .pr_drain = frag6_drain, 161 .pr_usrreqs = &nousrreqs, 162 }, 163 { 164 .pr_type = SOCK_DGRAM, 165 .pr_domain = &inet6domain, 166 .pr_protocol = IPPROTO_UDP, 167 .pr_flags = PR_ATOMIC|PR_ADDR, 168 .pr_input = udp6_input, 169 .pr_ctlinput = udp6_ctlinput, 170 .pr_ctloutput = ip6_ctloutput, 171 #ifndef INET /* Do not call initialization twice. */ 172 .pr_init = udp_init, 173 #endif 174 .pr_usrreqs = &udp6_usrreqs, 175 }, 176 { 177 .pr_type = SOCK_STREAM, 178 .pr_domain = &inet6domain, 179 .pr_protocol = IPPROTO_TCP, 180 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN, 181 .pr_input = tcp6_input, 182 .pr_ctlinput = tcp6_ctlinput, 183 .pr_ctloutput = tcp_ctloutput, 184 #ifndef INET /* don't call initialization and timeout routines twice */ 185 .pr_init = tcp_init, 186 .pr_slowtimo = tcp_slowtimo, 187 #endif 188 .pr_drain = tcp_drain, 189 .pr_usrreqs = &tcp6_usrreqs, 190 }, 191 #ifdef SCTP 192 { 193 .pr_type = SOCK_SEQPACKET, 194 .pr_domain = &inet6domain, 195 .pr_protocol = IPPROTO_SCTP, 196 .pr_flags = PR_WANTRCVD, 197 .pr_input = sctp6_input, 198 .pr_ctlinput = sctp6_ctlinput, 199 .pr_ctloutput = sctp_ctloutput, 200 .pr_drain = sctp_drain, 201 #ifndef INET /* Do not call initialization twice. */ 202 .pr_init = sctp_init, 203 #endif 204 .pr_usrreqs = &sctp6_usrreqs 205 }, 206 { 207 .pr_type = SOCK_STREAM, 208 .pr_domain = &inet6domain, 209 .pr_protocol = IPPROTO_SCTP, 210 .pr_flags = PR_WANTRCVD, 211 .pr_input = sctp6_input, 212 .pr_ctlinput = sctp6_ctlinput, 213 .pr_ctloutput = sctp_ctloutput, 214 .pr_drain = sctp_drain, 215 .pr_usrreqs = &sctp6_usrreqs 216 }, 217 #endif /* SCTP */ 218 { 219 .pr_type = SOCK_DGRAM, 220 .pr_domain = &inet6domain, 221 .pr_protocol = IPPROTO_UDPLITE, 222 .pr_flags = PR_ATOMIC|PR_ADDR, 223 .pr_input = udp6_input, 224 .pr_ctlinput = udplite6_ctlinput, 225 .pr_ctloutput = udp_ctloutput, 226 #ifndef INET /* Do not call initialization twice. */ 227 .pr_init = udplite_init, 228 #endif 229 .pr_usrreqs = &udp6_usrreqs, 230 }, 231 { 232 .pr_type = SOCK_RAW, 233 .pr_domain = &inet6domain, 234 .pr_protocol = IPPROTO_RAW, 235 .pr_flags = PR_ATOMIC|PR_ADDR, 236 .pr_input = rip6_input, 237 .pr_output = rip6_output, 238 .pr_ctlinput = rip6_ctlinput, 239 .pr_ctloutput = rip6_ctloutput, 240 #ifndef INET /* Do not call initialization twice. */ 241 .pr_init = rip_init, 242 #endif 243 .pr_usrreqs = &rip6_usrreqs 244 }, 245 { 246 .pr_type = SOCK_RAW, 247 .pr_domain = &inet6domain, 248 .pr_protocol = IPPROTO_ICMPV6, 249 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 250 .pr_input = icmp6_input, 251 .pr_output = rip6_output, 252 .pr_ctlinput = rip6_ctlinput, 253 .pr_ctloutput = rip6_ctloutput, 254 .pr_fasttimo = icmp6_fasttimo, 255 .pr_slowtimo = icmp6_slowtimo, 256 .pr_usrreqs = &rip6_usrreqs 257 }, 258 { 259 .pr_type = SOCK_RAW, 260 .pr_domain = &inet6domain, 261 .pr_protocol = IPPROTO_DSTOPTS, 262 .pr_flags = PR_ATOMIC|PR_ADDR, 263 .pr_input = dest6_input, 264 .pr_usrreqs = &nousrreqs 265 }, 266 { 267 .pr_type = SOCK_RAW, 268 .pr_domain = &inet6domain, 269 .pr_protocol = IPPROTO_ROUTING, 270 .pr_flags = PR_ATOMIC|PR_ADDR, 271 .pr_input = route6_input, 272 .pr_usrreqs = &nousrreqs 273 }, 274 { 275 .pr_type = SOCK_RAW, 276 .pr_domain = &inet6domain, 277 .pr_protocol = IPPROTO_FRAGMENT, 278 .pr_flags = PR_ATOMIC|PR_ADDR, 279 .pr_input = frag6_input, 280 .pr_usrreqs = &nousrreqs 281 }, 282 #ifdef IPSEC 283 { 284 .pr_type = SOCK_RAW, 285 .pr_domain = &inet6domain, 286 .pr_protocol = IPPROTO_AH, 287 .pr_flags = PR_ATOMIC|PR_ADDR, 288 .pr_input = ipsec6_common_input, 289 .pr_usrreqs = &nousrreqs, 290 }, 291 { 292 .pr_type = SOCK_RAW, 293 .pr_domain = &inet6domain, 294 .pr_protocol = IPPROTO_ESP, 295 .pr_flags = PR_ATOMIC|PR_ADDR, 296 .pr_input = ipsec6_common_input, 297 .pr_ctlinput = esp6_ctlinput, 298 .pr_usrreqs = &nousrreqs, 299 }, 300 { 301 .pr_type = SOCK_RAW, 302 .pr_domain = &inet6domain, 303 .pr_protocol = IPPROTO_IPCOMP, 304 .pr_flags = PR_ATOMIC|PR_ADDR, 305 .pr_input = ipsec6_common_input, 306 .pr_usrreqs = &nousrreqs, 307 }, 308 #endif /* IPSEC */ 309 #ifdef INET 310 { 311 .pr_type = SOCK_RAW, 312 .pr_domain = &inet6domain, 313 .pr_protocol = IPPROTO_IPV4, 314 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 315 .pr_input = encap6_input, 316 .pr_output = rip6_output, 317 .pr_ctloutput = rip6_ctloutput, 318 .pr_init = encap_init, 319 .pr_usrreqs = &rip6_usrreqs 320 }, 321 #endif /* INET */ 322 { 323 .pr_type = SOCK_RAW, 324 .pr_domain = &inet6domain, 325 .pr_protocol = IPPROTO_IPV6, 326 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 327 .pr_input = encap6_input, 328 .pr_output = rip6_output, 329 .pr_ctloutput = rip6_ctloutput, 330 .pr_init = encap_init, 331 .pr_usrreqs = &rip6_usrreqs 332 }, 333 { 334 .pr_type = SOCK_RAW, 335 .pr_domain = &inet6domain, 336 .pr_protocol = IPPROTO_GRE, 337 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 338 .pr_input = encap6_input, 339 .pr_output = rip6_output, 340 .pr_ctloutput = rip6_ctloutput, 341 .pr_init = encap_init, 342 .pr_usrreqs = &rip6_usrreqs 343 }, 344 { 345 .pr_type = SOCK_RAW, 346 .pr_domain = &inet6domain, 347 .pr_protocol = IPPROTO_PIM, 348 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 349 .pr_input = encap6_input, 350 .pr_output = rip6_output, 351 .pr_ctloutput = rip6_ctloutput, 352 .pr_usrreqs = &rip6_usrreqs 353 }, 354 /* Spacer n-times for loadable protocols. */ 355 IP6PROTOSPACER, 356 IP6PROTOSPACER, 357 IP6PROTOSPACER, 358 IP6PROTOSPACER, 359 IP6PROTOSPACER, 360 IP6PROTOSPACER, 361 IP6PROTOSPACER, 362 IP6PROTOSPACER, 363 /* raw wildcard */ 364 { 365 .pr_type = SOCK_RAW, 366 .pr_domain = &inet6domain, 367 .pr_flags = PR_ATOMIC|PR_ADDR, 368 .pr_input = rip6_input, 369 .pr_output = rip6_output, 370 .pr_ctloutput = rip6_ctloutput, 371 .pr_usrreqs = &rip6_usrreqs 372 }, 373 }; 374 375 extern int in6_inithead(void **, int); 376 #ifdef VIMAGE 377 extern int in6_detachhead(void **, int); 378 #endif 379 380 struct domain inet6domain = { 381 .dom_family = AF_INET6, 382 .dom_name = "internet6", 383 .dom_protosw = (struct protosw *)inet6sw, 384 .dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)], 385 #ifdef RADIX_MPATH 386 .dom_rtattach = rn6_mpath_inithead, 387 #else 388 .dom_rtattach = in6_inithead, 389 #endif 390 #ifdef VIMAGE 391 .dom_rtdetach = in6_detachhead, 392 #endif 393 .dom_ifattach = in6_domifattach, 394 .dom_ifdetach = in6_domifdetach, 395 .dom_ifmtu = in6_domifmtu 396 }; 397 398 VNET_DOMAIN_SET(inet6); 399 400 /* 401 * Internet configuration info 402 */ 403 #ifndef IPV6FORWARDING 404 #ifdef GATEWAY6 405 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 406 #else 407 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 408 #endif /* GATEWAY6 */ 409 #endif /* !IPV6FORWARDING */ 410 411 #ifndef IPV6_SENDREDIRECTS 412 #define IPV6_SENDREDIRECTS 1 413 #endif 414 415 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */ 416 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS; 417 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM; 418 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS; 419 VNET_DEFINE(int, ip6_accept_rtadv) = 0; 420 VNET_DEFINE(int, ip6_no_radr) = 0; 421 VNET_DEFINE(int, ip6_norbit_raif) = 0; 422 VNET_DEFINE(int, ip6_rfc6204w3) = 0; 423 VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */ 424 VNET_DEFINE(int, ip6_maxfrags); /* initialized in frag6.c:frag6_init() */ 425 VNET_DEFINE(int, ip6_log_interval) = 5; 426 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we 427 * process? */ 428 VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */ 429 VNET_DEFINE(int, ip6_auto_flowlabel) = 1; 430 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr 431 * (RFC2462 5.5.4) */ 432 VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix 433 * walk list every 5 sec. */ 434 VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */ 435 VNET_DEFINE(int, ip6_v6only) = 1; 436 437 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L; 438 #ifdef IPSTEALTH 439 VNET_DEFINE(int, ip6stealth) = 0; 440 #endif 441 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS 442 * (RFC 4861) */ 443 444 /* icmp6 */ 445 /* 446 * BSDI4 defines these variables in in_proto.c... 447 * XXX: what if we don't define INET? Should we define pmtu6_expire 448 * or so? (jinmei@kame.net 19990310) 449 */ 450 VNET_DEFINE(int, pmtu_expire) = 60*10; 451 VNET_DEFINE(int, pmtu_probe) = 60*2; 452 453 /* ICMPV6 parameters */ 454 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */ 455 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */ 456 VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */ 457 /* control how to respond to NI queries */ 458 VNET_DEFINE(int, icmp6_nodeinfo) = 459 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK); 460 VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1; 461 462 /* 463 * sysctl related items. 464 */ 465 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0, 466 "Internet6 Family"); 467 468 /* net.inet6 */ 469 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6"); 470 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6"); 471 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6"); 472 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6"); 473 #ifdef SCTP 474 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6"); 475 #endif 476 #ifdef IPSEC 477 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6"); 478 #endif /* IPSEC */ 479 480 /* net.inet6.ip6 */ 481 static int 482 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS) 483 { 484 int error, val; 485 486 val = V_ip6_temp_preferred_lifetime; 487 error = sysctl_handle_int(oidp, &val, 0, req); 488 if (error != 0 || !req->newptr) 489 return (error); 490 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance) 491 return (EINVAL); 492 V_ip6_temp_preferred_lifetime = val; 493 return (0); 494 } 495 496 static int 497 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS) 498 { 499 int error, val; 500 501 val = V_ip6_temp_valid_lifetime; 502 error = sysctl_handle_int(oidp, &val, 0, req); 503 if (error != 0 || !req->newptr) 504 return (error); 505 if (val < V_ip6_temp_preferred_lifetime) 506 return (EINVAL); 507 V_ip6_temp_valid_lifetime = val; 508 return (0); 509 } 510 511 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, 512 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0, 513 "Enable IPv6 forwarding between interfaces"); 514 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, 515 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0, 516 "Send a redirect message when forwarding back to a source link"); 517 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, 518 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0, 519 "Default hop limit"); 520 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat, 521 ip6stat, 522 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)"); 523 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets, 524 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0, 525 "Maximum allowed number of outstanding fragmented IPv6 packets"); 526 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv, 527 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0, 528 "Default value of per-interface flag for accepting ICMPv6 RA messages"); 529 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr, 530 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0, 531 "Default value of per-interface flag to control whether routers " 532 "sending ICMPv6 RA messages on that interface are added into the " 533 "default router list"); 534 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif, 535 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0, 536 "Always set clear the R flag in ICMPv6 NA messages when accepting RA " 537 "on the interface"); 538 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3, 539 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0, 540 "Accept the default router list from ICMPv6 RA messages even " 541 "when packet forwarding is enabled"); 542 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval, 543 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, 544 "Frequency in seconds at which to log IPv6 forwarding errors"); 545 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit, 546 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, 547 "Maximum allowed number of nested protocol headers"); 548 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, 549 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0, 550 "Number of ICMPv6 NS messages sent during duplicate address detection"); 551 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel, 552 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, 553 "Provide an IPv6 flowlabel in outbound packets"); 554 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim, 555 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, 556 "Default hop limit for multicast packets"); 557 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version, 558 CTLFLAG_RD, __KAME_VERSION, 0, 559 "KAME version string"); 560 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated, 561 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, 562 "Allow the use of addresses whose preferred lifetimes have expired"); 563 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, 564 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0, 565 ""); /* XXX unused */ 566 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr, 567 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, 568 "Create RFC3041 temporary addresses for autoconfigured addresses"); 569 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime, 570 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 571 NULL, 0, sysctl_ip6_temppltime, "I", 572 "Maximum preferred lifetime for temporary addresses"); 573 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime, 574 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, 575 NULL, 0, sysctl_ip6_tempvltime, "I", 576 "Maximum valid lifetime for temporary addresses"); 577 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only, 578 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0, 579 "Restrict AF_INET6 sockets to IPv6 addresses only"); 580 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal, 581 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0, 582 "Default value of per-interface flag for automatically adding an IPv6 " 583 "link-local address to interfaces when attached"); 584 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, 585 struct rip6stat, rip6stat, 586 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)"); 587 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr, 588 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0, 589 "Prefer RFC3041 temporary addresses in source address selection"); 590 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone, 591 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0, 592 "Use the default scope zone when none is specified"); 593 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags, 594 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfrags), 0, 595 "Maximum allowed number of outstanding IPv6 packet fragments"); 596 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu, 597 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0, 598 "Enable path MTU discovery for multicast packets"); 599 #ifdef IPSTEALTH 600 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW, 601 &VNET_NAME(ip6stealth), 0, 602 "Forward IPv6 packets without decrementing their TTL"); 603 #endif 604 605 /* net.inet6.icmp6 */ 606 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept, 607 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0, 608 "Accept ICMPv6 redirect messages"); 609 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout, 610 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0, 611 ""); /* XXX unused */ 612 SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, 613 struct icmp6stat, icmp6stat, 614 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)"); 615 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, 616 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0, 617 "Frequency in seconds of checks for expired prefixes and routers"); 618 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, 619 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0, 620 "Delay in seconds before probing for reachability"); 621 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries, 622 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0, 623 "Number of ICMPv6 NS messages sent during reachability detection"); 624 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries, 625 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0, 626 "Number of ICMPv6 NS messages sent during address resolution"); 627 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback, 628 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0, 629 "Create a loopback route when configuring an IPv6 address"); 630 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo, 631 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0, 632 "Mask of enabled RF4620 node information query types"); 633 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX, 634 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW, 635 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0, 636 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup " 637 "for compatibility with KAME implementation"); 638 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit, 639 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, 640 "Maximum number of ICMPv6 error messages per second"); 641 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint, 642 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0, 643 ""); /* XXX unused */ 644 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug, 645 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0, 646 "Log NDP debug messages"); 647 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861, 648 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW, 649 &VNET_NAME(nd6_onlink_ns_rfc4861), 0, 650 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861"); 651