sys/netinet6/in6_proto.c

   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_carp.h"
  71 #include "opt_sctp.h"
  72 #include "opt_mpath.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/kernel.h>
  80 #include <sys/domain.h>
  81 #include <sys/mbuf.h>
  82 #include <sys/systm.h>
  83 #include <sys/sysctl.h>
  84 #include <sys/vimage.h>
  85
  86 #include <net/if.h>
  87 #include <net/radix.h>
  88 #include <net/route.h>
  89 #ifdef RADIX_MPATH
  90 #include <net/radix_mpath.h>
  91 #endif
  92
  93 #include <netinet/in.h>
  94 #include <netinet/in_systm.h>
  95 #include <netinet/in_var.h>
  96 #include <netinet/ip_encap.h>
  97 #include <netinet/ip.h>
  98 #include <netinet/ip_var.h>
  99 #include <netinet/ip6.h>
 100 #include <netinet6/ip6_var.h>
 101 #include <netinet/icmp6.h>
 102
 103 #include <netinet/tcp.h>
 104 #include <netinet/tcp_timer.h>
 105 #include <netinet/tcp_var.h>
 106 #include <netinet/udp.h>
 107 #include <netinet/udp_var.h>
 108 #include <netinet6/tcp6_var.h>
 109 #include <netinet6/raw_ip6.h>
 110 #include <netinet6/udp6_var.h>
 111 #include <netinet6/pim6_var.h>
 112 #include <netinet6/nd6.h>
 113
 114 #ifdef DEV_CARP
 115 #include <netinet/ip_carp.h>
 116 #endif
 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 #ifdef IPSEC
 127 #include <netipsec/ipsec.h>
 128 #include <netipsec/ipsec6.h>
 129 #endif /* IPSEC */
 130
 131 #include <netinet6/ip6protosw.h>
 132 #include <netinet6/vinet6.h>
 133
 134 /*
 135  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
 136  */
 137
 138 extern  struct domain inet6domain;
 139 static  struct pr_usrreqs nousrreqs;
 140
 141 #define PR_LISTEN       0
 142 #define PR_ABRTACPTDIS  0
 143
 144 struct ip6protosw inet6sw[] = {
 145 {
 146         .pr_type =              0,
 147         .pr_domain =            &inet6domain,
 148         .pr_protocol =          IPPROTO_IPV6,
 149         .pr_init =              ip6_init,
 150         .pr_slowtimo =          frag6_slowtimo,
 151         .pr_drain =             frag6_drain,
 152         .pr_usrreqs =           &nousrreqs,
 153 },
 154 {
 155         .pr_type =              SOCK_DGRAM,
 156         .pr_domain =            &inet6domain,
 157         .pr_protocol =          IPPROTO_UDP,
 158         .pr_flags =             PR_ATOMIC|PR_ADDR,
 159         .pr_input =             udp6_input,
 160         .pr_ctlinput =          udp6_ctlinput,
 161         .pr_ctloutput =         ip6_ctloutput,
 162         .pr_usrreqs =           &udp6_usrreqs,
 163 },
 164 {
 165         .pr_type =              SOCK_STREAM,
 166         .pr_domain =            &inet6domain,
 167         .pr_protocol =          IPPROTO_TCP,
 168         .pr_flags =             PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
 169         .pr_input =             tcp6_input,
 170         .pr_ctlinput =          tcp6_ctlinput,
 171         .pr_ctloutput =         tcp_ctloutput,
 172 #ifndef INET    /* don't call initialization and timeout routines twice */
 173         .pr_init =              tcp_init,
 174         .pr_fasttimo =          tcp_fasttimo,
 175         .pr_slowtimo =          tcp_slowtimo,
 176 #endif
 177         .pr_drain =             tcp_drain,
 178         .pr_usrreqs =           &tcp6_usrreqs,
 179 },
 180 #ifdef SCTP
 181 {
 182         .pr_type =      SOCK_DGRAM,
 183         .pr_domain =    &inet6domain,
 184         .pr_protocol =  IPPROTO_SCTP,
 185         .pr_flags =     PR_WANTRCVD,
 186         .pr_input =     sctp6_input,
 187         .pr_ctlinput =  sctp6_ctlinput,
 188         .pr_ctloutput = sctp_ctloutput,
 189         .pr_drain =     sctp_drain,
 190         .pr_usrreqs =   &sctp6_usrreqs
 191 },
 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         .pr_usrreqs =   &sctp6_usrreqs
 202 },
 203
 204 {
 205         .pr_type =      SOCK_STREAM,
 206         .pr_domain =    &inet6domain,
 207         .pr_protocol =  IPPROTO_SCTP,
 208         .pr_flags =     PR_WANTRCVD,
 209         .pr_input =     sctp6_input,
 210         .pr_ctlinput =  sctp6_ctlinput,
 211         .pr_ctloutput = sctp_ctloutput,
 212         .pr_drain =     sctp_drain,
 213         .pr_usrreqs =   &sctp6_usrreqs
 214 },
 215 #endif /* SCTP */
 216 {
 217         .pr_type =              SOCK_RAW,
 218         .pr_domain =            &inet6domain,
 219         .pr_protocol =          IPPROTO_RAW,
 220         .pr_flags =             PR_ATOMIC|PR_ADDR,
 221         .pr_input =             rip6_input,
 222         .pr_output =            rip6_output,
 223         .pr_ctlinput =          rip6_ctlinput,
 224         .pr_ctloutput =         rip6_ctloutput,
 225         .pr_usrreqs =           &rip6_usrreqs
 226 },
 227 {
 228         .pr_type =              SOCK_RAW,
 229         .pr_domain =            &inet6domain,
 230         .pr_protocol =          IPPROTO_ICMPV6,
 231         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 232         .pr_input =             icmp6_input,
 233         .pr_output =            rip6_output,
 234         .pr_ctlinput =          rip6_ctlinput,
 235         .pr_ctloutput =         rip6_ctloutput,
 236         .pr_init =              icmp6_init,
 237         .pr_fasttimo =          icmp6_fasttimo,
 238         .pr_usrreqs =           &rip6_usrreqs
 239 },
 240 {
 241         .pr_type =              SOCK_RAW,
 242         .pr_domain =            &inet6domain,
 243         .pr_protocol =          IPPROTO_DSTOPTS,
 244         .pr_flags =             PR_ATOMIC|PR_ADDR,
 245         .pr_input =             dest6_input,
 246         .pr_usrreqs =           &nousrreqs
 247 },
 248 {
 249         .pr_type =              SOCK_RAW,
 250         .pr_domain =            &inet6domain,
 251         .pr_protocol =          IPPROTO_ROUTING,
 252         .pr_flags =             PR_ATOMIC|PR_ADDR,
 253         .pr_input =             route6_input,
 254         .pr_usrreqs =           &nousrreqs
 255 },
 256 {
 257         .pr_type =              SOCK_RAW,
 258         .pr_domain =            &inet6domain,
 259         .pr_protocol =          IPPROTO_FRAGMENT,
 260         .pr_flags =             PR_ATOMIC|PR_ADDR,
 261         .pr_input =             frag6_input,
 262         .pr_usrreqs =           &nousrreqs
 263 },
 264 #ifdef IPSEC
 265 {
 266         .pr_type =              SOCK_RAW,
 267         .pr_domain =            &inet6domain,
 268         .pr_protocol =          IPPROTO_AH,
 269         .pr_flags =             PR_ATOMIC|PR_ADDR,
 270         .pr_input =             ipsec6_common_input,
 271         .pr_usrreqs =           &nousrreqs,
 272 },
 273 {
 274         .pr_type =              SOCK_RAW,
 275         .pr_domain =            &inet6domain,
 276         .pr_protocol =          IPPROTO_ESP,
 277         .pr_flags =             PR_ATOMIC|PR_ADDR,
 278         .pr_input =             ipsec6_common_input,
 279         .pr_ctlinput =          esp6_ctlinput,
 280         .pr_usrreqs =           &nousrreqs,
 281 },
 282 {
 283         .pr_type =              SOCK_RAW,
 284         .pr_domain =            &inet6domain,
 285         .pr_protocol =          IPPROTO_IPCOMP,
 286         .pr_flags =             PR_ATOMIC|PR_ADDR,
 287         .pr_input =             ipsec6_common_input,
 288         .pr_usrreqs =           &nousrreqs,
 289 },
 290 #endif /* IPSEC */
 291 #ifdef INET
 292 {
 293         .pr_type =              SOCK_RAW,
 294         .pr_domain =            &inet6domain,
 295         .pr_protocol =          IPPROTO_IPV4,
 296         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 297         .pr_input =             encap6_input,
 298         .pr_output =            rip6_output,
 299         .pr_ctloutput =         rip6_ctloutput,
 300         .pr_init =              encap_init,
 301         .pr_usrreqs =           &rip6_usrreqs
 302 },
 303 #endif /* INET */
 304 {
 305         .pr_type =              SOCK_RAW,
 306         .pr_domain =            &inet6domain,
 307         .pr_protocol =          IPPROTO_IPV6,
 308         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 309         .pr_input =             encap6_input,
 310         .pr_output =            rip6_output,
 311         .pr_ctloutput =         rip6_ctloutput,
 312         .pr_init =              encap_init,
 313         .pr_usrreqs =           &rip6_usrreqs
 314 },
 315 {
 316         .pr_type =              SOCK_RAW,
 317         .pr_domain =            &inet6domain,
 318         .pr_protocol =          IPPROTO_PIM,
 319         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 320         .pr_input =             encap6_input,
 321         .pr_output =            rip6_output,
 322         .pr_ctloutput =         rip6_ctloutput,
 323         .pr_usrreqs =           &rip6_usrreqs
 324 },
 325 #ifdef DEV_CARP
 326 {
 327         .pr_type =              SOCK_RAW,
 328         .pr_domain =            &inet6domain,
 329         .pr_protocol =          IPPROTO_CARP,
 330         .pr_flags =             PR_ATOMIC|PR_ADDR,
 331         .pr_input =             carp6_input,
 332         .pr_output =            rip6_output,
 333         .pr_ctloutput =         rip6_ctloutput,
 334         .pr_usrreqs =           &rip6_usrreqs
 335 },
 336 #endif /* DEV_CARP */
 337 /* raw wildcard */
 338 {
 339         .pr_type =              SOCK_RAW,
 340         .pr_domain =            &inet6domain,
 341         .pr_flags =             PR_ATOMIC|PR_ADDR,
 342         .pr_input =             rip6_input,
 343         .pr_output =            rip6_output,
 344         .pr_ctloutput =         rip6_ctloutput,
 345         .pr_usrreqs =           &rip6_usrreqs
 346 },
 347 };
 348
 349 extern int in6_inithead(void **, int);
 350
 351 struct domain inet6domain = {
 352         .dom_family =           AF_INET6,
 353         .dom_name =             "internet6",
 354         .dom_protosw =          (struct protosw *)inet6sw,
 355         .dom_protoswNPROTOSW =  (struct protosw *)
 356                                 &inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
 357 #ifdef RADIX_MPATH
 358         .dom_rtattach =         rn6_mpath_inithead,
 359 #else
 360         .dom_rtattach =         in6_inithead,
 361 #endif
 362         .dom_rtoffset =         offsetof(struct sockaddr_in6, sin6_addr) << 3,
 363         .dom_maxrtkey =         sizeof(struct sockaddr_in6),
 364         .dom_ifattach =         in6_domifattach,
 365         .dom_ifdetach =         in6_domifdetach
 366 };
 367
 368 DOMAIN_SET(inet6);
 369
 370 /*
 371  * Internet configuration info
 372  */
 373 #ifdef VIMAGE_GLOBALS
 374 int     ip6_forwarding;
 375 int     ip6_sendredirects;
 376 int     ip6_defhlim;
 377 int     ip6_defmcasthlim;
 378 int     ip6_accept_rtadv;
 379 int     ip6_maxfragpackets;
 380 int     ip6_maxfrags;
 381 int     ip6_log_interval;
 382 int     ip6_hdrnestlimit;
 383 int     ip6_dad_count;
 384 int     ip6_auto_flowlabel;
 385 int     ip6_use_deprecated;
 386 int     ip6_rr_prune;
 387 int     ip6_mcast_pmtu;
 388 int     ip6_v6only;
 389 int     ip6_keepfaith;
 390 time_t  ip6_log_time;
 391 int     ip6stealth;
 392 int     nd6_onlink_ns_rfc4861;
 393
 394 /* icmp6 */
 395 /*
 396  * BSDI4 defines these variables in in_proto.c...
 397  * XXX: what if we don't define INET? Should we define pmtu6_expire
 398  * or so? (jinmei@kame.net 19990310)
 399  */
 400 int pmtu_expire;
 401 int pmtu_probe;
 402
 403 /* raw IP6 parameters */
 404 /*
 405  * Nominal space allocated to a raw ip socket.
 406  */
 407 u_long  rip6_sendspace;
 408 u_long  rip6_recvspace;
 409
 410 /* ICMPV6 parameters */
 411 int     icmp6_rediraccept;
 412 int     icmp6_redirtimeout;
 413 int     icmp6errppslim;
 414 /* control how to respond to NI queries */
 415 int     icmp6_nodeinfo;
 416
 417 /* UDP on IP6 parameters */
 418 int     udp6_sendspace;
 419 int     udp6_recvspace;
 420 #endif /* VIMAGE_GLOBALS */
 421
 422 /*
 423  * sysctl related items.
 424  */
 425 SYSCTL_NODE(_net,       PF_INET6,       inet6,  CTLFLAG_RW,     0,
 426         "Internet6 Family");
 427
 428 /* net.inet6 */
 429 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6,   ip6,    CTLFLAG_RW, 0,  "IP6");
 430 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6,  CTLFLAG_RW, 0,  "ICMP6");
 431 SYSCTL_NODE(_net_inet6, IPPROTO_UDP,    udp6,   CTLFLAG_RW, 0,  "UDP6");
 432 SYSCTL_NODE(_net_inet6, IPPROTO_TCP,    tcp6,   CTLFLAG_RW, 0,  "TCP6");
 433 #ifdef SCTP
 434 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP,   sctp6,  CTLFLAG_RW, 0,  "SCTP6");
 435 #endif
 436 #ifdef IPSEC
 437 SYSCTL_NODE(_net_inet6, IPPROTO_ESP,    ipsec6, CTLFLAG_RW, 0,  "IPSEC6");
 438 #endif /* IPSEC */
 439
 440 /* net.inet6.ip6 */
 441 static int
 442 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
 443 {
 444         INIT_VNET_INET6(curvnet);
 445         int error = 0;
 446         int old;
 447
 448         error = SYSCTL_OUT(req, arg1, sizeof(int));
 449         if (error || !req->newptr)
 450                 return (error);
 451         old = V_ip6_temp_preferred_lifetime;
 452         error = SYSCTL_IN(req, arg1, sizeof(int));
 453         if (V_ip6_temp_preferred_lifetime <
 454             V_ip6_desync_factor + V_ip6_temp_regen_advance) {
 455                 V_ip6_temp_preferred_lifetime = old;
 456                 return (EINVAL);
 457         }
 458         return (error);
 459 }
 460
 461 static int
 462 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
 463 {
 464         INIT_VNET_INET6(curvnet);
 465         int error = 0;
 466         int old;
 467
 468         error = SYSCTL_OUT(req, arg1, sizeof(int));
 469         if (error || !req->newptr)
 470                 return (error);
 471         old = V_ip6_temp_valid_lifetime;
 472         error = SYSCTL_IN(req, arg1, sizeof(int));
 473         if (V_ip6_temp_valid_lifetime < V_ip6_temp_preferred_lifetime) {
 474                 V_ip6_temp_preferred_lifetime = old;
 475                 return (EINVAL);
 476         }
 477         return (error);
 478 }
 479
 480 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_FORWARDING,
 481         forwarding, CTLFLAG_RW,         ip6_forwarding, 0, "");
 482 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_SENDREDIRECTS,
 483         redirect, CTLFLAG_RW,           ip6_sendredirects,      0, "");
 484 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_DEFHLIM,
 485         hlim, CTLFLAG_RW,               ip6_defhlim,    0, "");
 486 SYSCTL_V_STRUCT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_STATS, stats,
 487         CTLFLAG_RD, ip6stat, ip6stat, "");
 488 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS,
 489         maxfragpackets, CTLFLAG_RW,     ip6_maxfragpackets,     0, "");
 490 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_ACCEPT_RTADV,
 491         accept_rtadv, CTLFLAG_RW,       ip6_accept_rtadv,       0, "");
 492 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_KEEPFAITH,
 493         keepfaith, CTLFLAG_RW,          ip6_keepfaith,  0, "");
 494 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_LOG_INTERVAL,
 495         log_interval, CTLFLAG_RW,       ip6_log_interval,       0, "");
 496 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_HDRNESTLIMIT,
 497         hdrnestlimit, CTLFLAG_RW,       ip6_hdrnestlimit,       0, "");
 498 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_DAD_COUNT,
 499         dad_count, CTLFLAG_RW,  ip6_dad_count,  0, "");
 500 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL,
 501         auto_flowlabel, CTLFLAG_RW,     ip6_auto_flowlabel,     0, "");
 502 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_DEFMCASTHLIM,
 503         defmcasthlim, CTLFLAG_RW,       ip6_defmcasthlim,       0, "");
 504 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION,
 505         kame_version, CTLFLAG_RD,       __KAME_VERSION,         0, "");
 506 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_USE_DEPRECATED,
 507         use_deprecated, CTLFLAG_RW,     ip6_use_deprecated,     0, "");
 508 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_RR_PRUNE,
 509         rr_prune, CTLFLAG_RW,   ip6_rr_prune,                   0, "");
 510 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_USETEMPADDR,
 511         use_tempaddr, CTLFLAG_RW, ip6_use_tempaddr,             0, "");
 512 SYSCTL_V_OID(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
 513         CTLTYPE_INT|CTLFLAG_RW, ip6_temp_preferred_lifetime, 0,
 514         sysctl_ip6_temppltime, "I", "");
 515 SYSCTL_V_OID(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
 516         CTLTYPE_INT|CTLFLAG_RW, ip6_temp_valid_lifetime, 0,
 517         sysctl_ip6_tempvltime, "I", "");
 518 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_V6ONLY,
 519         v6only, CTLFLAG_RW,     ip6_v6only,                     0, "");
 520 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL,
 521         auto_linklocal, CTLFLAG_RW, ip6_auto_linklocal, 0, "");
 522 SYSCTL_V_STRUCT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_RIP6STATS,
 523         rip6stats, CTLFLAG_RD, rip6stat, rip6stat, "");
 524 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR,
 525         prefer_tempaddr, CTLFLAG_RW, ip6_prefer_tempaddr, 0, "");
 526 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE,
 527         use_defaultzone, CTLFLAG_RW, ip6_use_defzone, 0,"");
 528 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_MAXFRAGS,
 529         maxfrags, CTLFLAG_RW, ip6_maxfrags, 0, "");
 530 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_MCAST_PMTU,
 531         mcast_pmtu, CTLFLAG_RW, ip6_mcast_pmtu, 0, "");
 532 #ifdef IPSTEALTH
 533 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_STEALTH,
 534         stealth, CTLFLAG_RW, ip6stealth, 0, "");
 535 #endif
 536
 537 /* net.inet6.icmp6 */
 538 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT,
 539         rediraccept, CTLFLAG_RW,        icmp6_rediraccept,      0, "");
 540 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT,
 541         redirtimeout, CTLFLAG_RW,       icmp6_redirtimeout,     0, "");
 542 SYSCTL_V_STRUCT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_STATS,
 543         stats, CTLFLAG_RD, icmp6stat, icmp6stat, "");
 544 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE,
 545         nd6_prune, CTLFLAG_RW,          nd6_prune,      0, "");
 546 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_DELAY,
 547         nd6_delay, CTLFLAG_RW,          nd6_delay,      0, "");
 548 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES,
 549         nd6_umaxtries, CTLFLAG_RW,      nd6_umaxtries,  0, "");
 550 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES,
 551         nd6_mmaxtries, CTLFLAG_RW,      nd6_mmaxtries,  0, "");
 552 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK,
 553         nd6_useloopback, CTLFLAG_RW,    nd6_useloopback, 0, "");
 554 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_NODEINFO,
 555         nodeinfo, CTLFLAG_RW,   icmp6_nodeinfo, 0, "");
 556 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT,
 557         errppslimit, CTLFLAG_RW,        icmp6errppslim, 0, "");
 558 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT,
 559         nd6_maxnudhint, CTLFLAG_RW,     nd6_maxnudhint, 0, "");
 560 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG,
 561         nd6_debug, CTLFLAG_RW,  nd6_debug,              0, "");
 562
 563 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
 564         nd6_onlink_ns_rfc4861, CTLFLAG_RW, nd6_onlink_ns_rfc4861, 0,
 565         "Accept 'on-link' nd6 NS in compliance with RFC 4861.");