The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6_proto.c

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    1 /*-
    2  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name of the project nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $
   30  */
   31 
   32 /*-
   33  * Copyright (c) 1982, 1986, 1993
   34  *      The Regents of the University of California.  All rights reserved.
   35  *
   36  * Redistribution and use in source and binary forms, with or without
   37  * modification, are permitted provided that the following conditions
   38  * are met:
   39  * 1. Redistributions of source code must retain the above copyright
   40  *    notice, this list of conditions and the following disclaimer.
   41  * 2. Redistributions in binary form must reproduce the above copyright
   42  *    notice, this list of conditions and the following disclaimer in the
   43  *    documentation and/or other materials provided with the distribution.
   44  * 4. Neither the name of the University nor the names of its contributors
   45  *    may be used to endorse or promote products derived from this software
   46  *    without specific prior written permission.
   47  *
   48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   58  * SUCH DAMAGE.
   59  *
   60  *      @(#)in_proto.c  8.1 (Berkeley) 6/10/93
   61  */
   62 
   63 #include <sys/cdefs.h>
   64 __FBSDID("$FreeBSD: stable/7/sys/netinet6/in6_proto.c 223273 2011-06-18 22:09:44Z bz $");
   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 
   73 #include <sys/param.h>
   74 #include <sys/socket.h>
   75 #include <sys/socketvar.h>
   76 #include <sys/protosw.h>
   77 #include <sys/kernel.h>
   78 #include <sys/domain.h>
   79 #include <sys/mbuf.h>
   80 #include <sys/systm.h>
   81 #include <sys/sysctl.h>
   82 
   83 #include <net/if.h>
   84 #include <net/radix.h>
   85 #include <net/route.h>
   86 
   87 #include <netinet/in.h>
   88 #include <netinet/in_systm.h>
   89 #include <netinet/in_var.h>
   90 #include <netinet/ip_encap.h>
   91 #include <netinet/ip.h>
   92 #include <netinet/ip_var.h>
   93 #include <netinet/ip6.h>
   94 #include <netinet6/ip6_var.h>
   95 #include <netinet/icmp6.h>
   96 
   97 #include <netinet/tcp.h>
   98 #include <netinet/tcp_timer.h>
   99 #include <netinet/tcp_var.h>
  100 #include <netinet/udp.h>
  101 #include <netinet/udp_var.h>
  102 #include <netinet6/tcp6_var.h>
  103 #include <netinet6/raw_ip6.h>
  104 #include <netinet6/udp6_var.h>
  105 #include <netinet6/pim6_var.h>
  106 #include <netinet6/nd6.h>
  107 
  108 #ifdef DEV_CARP
  109 #include <netinet/ip_carp.h>
  110 #endif
  111 
  112 #ifdef SCTP
  113 #include <netinet/in_pcb.h>
  114 #include <netinet/sctp_pcb.h>
  115 #include <netinet/sctp.h>
  116 #include <netinet/sctp_var.h>
  117 #include <netinet6/sctp6_var.h>
  118 #endif /* SCTP */
  119 
  120 #ifdef IPSEC
  121 #include <netipsec/ipsec.h>
  122 #include <netipsec/ipsec6.h>
  123 #endif /* IPSEC */
  124 
  125 #include <netinet6/ip6protosw.h>
  126 
  127 /*
  128  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
  129  */
  130 FEATURE(inet6, "Internet Protocol version 6");
  131 
  132 extern  struct domain inet6domain;
  133 static  struct pr_usrreqs nousrreqs;
  134 
  135 #define PR_LISTEN       0
  136 #define PR_ABRTACPTDIS  0
  137 
  138 /* Spacer for loadable protocols. */
  139 #define IP6PROTOSPACER                          \
  140 {                                               \
  141         .pr_domain =            &inet6domain,   \
  142         .pr_protocol =          PROTO_SPACER,   \
  143         .pr_usrreqs =           &nousrreqs      \
  144 }
  145 
  146 struct ip6protosw inet6sw[] = {
  147 {
  148         .pr_type =              0,
  149         .pr_domain =            &inet6domain,
  150         .pr_protocol =          IPPROTO_IPV6,
  151         .pr_init =              ip6_init,
  152         .pr_slowtimo =          frag6_slowtimo,
  153         .pr_drain =             frag6_drain,
  154         .pr_usrreqs =           &nousrreqs,
  155 },
  156 {
  157         .pr_type =              SOCK_DGRAM,
  158         .pr_domain =            &inet6domain,
  159         .pr_protocol =          IPPROTO_UDP,
  160         .pr_flags =             PR_ATOMIC|PR_ADDR,
  161         .pr_input =             udp6_input,
  162         .pr_ctlinput =          udp6_ctlinput,
  163         .pr_ctloutput =         ip6_ctloutput,
  164         .pr_usrreqs =           &udp6_usrreqs,
  165 },
  166 {
  167         .pr_type =              SOCK_STREAM,
  168         .pr_domain =            &inet6domain,
  169         .pr_protocol =          IPPROTO_TCP,
  170         .pr_flags =             PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
  171         .pr_input =             tcp6_input,
  172         .pr_ctlinput =          tcp6_ctlinput,
  173         .pr_ctloutput =         tcp_ctloutput,
  174 #ifndef INET    /* don't call initialization and timeout routines twice */
  175         .pr_init =              tcp_init,
  176         .pr_slowtimo =          tcp_slowtimo,
  177 #endif
  178         .pr_drain =             tcp_drain,
  179         .pr_usrreqs =           &tcp6_usrreqs,
  180 },
  181 #ifdef SCTP
  182 {
  183         .pr_type =      SOCK_DGRAM,
  184         .pr_domain =    &inet6domain,
  185         .pr_protocol =  IPPROTO_SCTP,
  186         .pr_flags =     PR_WANTRCVD,
  187         .pr_input =     sctp6_input,
  188         .pr_ctlinput =  sctp6_ctlinput,
  189         .pr_ctloutput = sctp_ctloutput,
  190         .pr_drain =     sctp_drain,
  191         .pr_usrreqs =   &sctp6_usrreqs
  192 },
  193 {
  194         .pr_type =      SOCK_SEQPACKET,
  195         .pr_domain =    &inet6domain,
  196         .pr_protocol =  IPPROTO_SCTP,
  197         .pr_flags =     PR_WANTRCVD,
  198         .pr_input =     sctp6_input,
  199         .pr_ctlinput =  sctp6_ctlinput,
  200         .pr_ctloutput = sctp_ctloutput,
  201         .pr_drain =     sctp_drain,
  202         .pr_usrreqs =   &sctp6_usrreqs
  203 },
  204 
  205 {
  206         .pr_type =      SOCK_STREAM,
  207         .pr_domain =    &inet6domain,
  208         .pr_protocol =  IPPROTO_SCTP,
  209         .pr_flags =     PR_WANTRCVD,
  210         .pr_input =     sctp6_input,
  211         .pr_ctlinput =  sctp6_ctlinput,
  212         .pr_ctloutput = sctp_ctloutput,
  213         .pr_drain =     sctp_drain,
  214         .pr_usrreqs =   &sctp6_usrreqs
  215 },
  216 #endif /* SCTP */
  217 {
  218         .pr_type =              SOCK_RAW,
  219         .pr_domain =            &inet6domain,
  220         .pr_protocol =          IPPROTO_RAW,
  221         .pr_flags =             PR_ATOMIC|PR_ADDR,
  222         .pr_input =             rip6_input,
  223         .pr_output =            rip6_output,
  224         .pr_ctlinput =          rip6_ctlinput,
  225         .pr_ctloutput =         rip6_ctloutput,
  226         .pr_usrreqs =           &rip6_usrreqs
  227 },
  228 {
  229         .pr_type =              SOCK_RAW,
  230         .pr_domain =            &inet6domain,
  231         .pr_protocol =          IPPROTO_ICMPV6,
  232         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  233         .pr_input =             icmp6_input,
  234         .pr_output =            rip6_output,
  235         .pr_ctlinput =          rip6_ctlinput,
  236         .pr_ctloutput =         rip6_ctloutput,
  237         .pr_init =              icmp6_init,
  238         .pr_fasttimo =          icmp6_fasttimo,
  239         .pr_usrreqs =           &rip6_usrreqs
  240 },
  241 {
  242         .pr_type =              SOCK_RAW,
  243         .pr_domain =            &inet6domain,
  244         .pr_protocol =          IPPROTO_DSTOPTS,
  245         .pr_flags =             PR_ATOMIC|PR_ADDR,
  246         .pr_input =             dest6_input,
  247         .pr_usrreqs =           &nousrreqs
  248 },
  249 {
  250         .pr_type =              SOCK_RAW,
  251         .pr_domain =            &inet6domain,
  252         .pr_protocol =          IPPROTO_ROUTING,
  253         .pr_flags =             PR_ATOMIC|PR_ADDR,
  254         .pr_input =             route6_input,
  255         .pr_usrreqs =           &nousrreqs
  256 },
  257 {
  258         .pr_type =              SOCK_RAW,
  259         .pr_domain =            &inet6domain,
  260         .pr_protocol =          IPPROTO_FRAGMENT,
  261         .pr_flags =             PR_ATOMIC|PR_ADDR,
  262         .pr_input =             frag6_input,
  263         .pr_usrreqs =           &nousrreqs
  264 },
  265 #ifdef IPSEC
  266 {
  267         .pr_type =              SOCK_RAW,
  268         .pr_domain =            &inet6domain,
  269         .pr_protocol =          IPPROTO_AH,
  270         .pr_flags =             PR_ATOMIC|PR_ADDR,
  271         .pr_input =             ipsec6_common_input,
  272         .pr_usrreqs =           &nousrreqs,
  273 },
  274 {
  275         .pr_type =              SOCK_RAW,
  276         .pr_domain =            &inet6domain,
  277         .pr_protocol =          IPPROTO_ESP,
  278         .pr_flags =             PR_ATOMIC|PR_ADDR,
  279         .pr_input =             ipsec6_common_input,
  280         .pr_ctlinput =          esp6_ctlinput,
  281         .pr_usrreqs =           &nousrreqs,
  282 },
  283 {
  284         .pr_type =              SOCK_RAW,
  285         .pr_domain =            &inet6domain,
  286         .pr_protocol =          IPPROTO_IPCOMP,
  287         .pr_flags =             PR_ATOMIC|PR_ADDR,
  288         .pr_input =             ipsec6_common_input,
  289         .pr_usrreqs =           &nousrreqs,
  290 },
  291 #endif /* IPSEC */
  292 #ifdef INET
  293 {
  294         .pr_type =              SOCK_RAW,
  295         .pr_domain =            &inet6domain,
  296         .pr_protocol =          IPPROTO_IPV4,
  297         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  298         .pr_input =             encap6_input,
  299         .pr_output =            rip6_output,
  300         .pr_ctloutput =         rip6_ctloutput,
  301         .pr_init =              encap_init,
  302         .pr_usrreqs =           &rip6_usrreqs
  303 },
  304 #endif /* INET */
  305 {
  306         .pr_type =              SOCK_RAW,
  307         .pr_domain =            &inet6domain,
  308         .pr_protocol =          IPPROTO_IPV6,
  309         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  310         .pr_input =             encap6_input,
  311         .pr_output =            rip6_output,
  312         .pr_ctloutput =         rip6_ctloutput,
  313         .pr_init =              encap_init,
  314         .pr_usrreqs =           &rip6_usrreqs
  315 },
  316 {
  317         .pr_type =              SOCK_RAW,
  318         .pr_domain =            &inet6domain,
  319         .pr_protocol =          IPPROTO_PIM,
  320         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  321         .pr_input =             encap6_input,
  322         .pr_output =            rip6_output,
  323         .pr_ctloutput =         rip6_ctloutput,
  324         .pr_usrreqs =           &rip6_usrreqs
  325 },
  326 #ifdef DEV_CARP
  327 {
  328         .pr_type =              SOCK_RAW,
  329         .pr_domain =            &inet6domain,
  330         .pr_protocol =          IPPROTO_CARP,
  331         .pr_flags =             PR_ATOMIC|PR_ADDR,
  332         .pr_input =             carp6_input,
  333         .pr_output =            rip6_output,
  334         .pr_ctloutput =         rip6_ctloutput,
  335         .pr_usrreqs =           &rip6_usrreqs
  336 },
  337 #endif /* DEV_CARP */
  338 /* Spacer n-times for loadable protocols. */
  339 IP6PROTOSPACER,
  340 IP6PROTOSPACER,
  341 IP6PROTOSPACER,
  342 IP6PROTOSPACER,
  343 IP6PROTOSPACER,
  344 IP6PROTOSPACER,
  345 IP6PROTOSPACER,
  346 IP6PROTOSPACER,
  347 /* raw wildcard */
  348 {
  349         .pr_type =              SOCK_RAW,
  350         .pr_domain =            &inet6domain,
  351         .pr_flags =             PR_ATOMIC|PR_ADDR,
  352         .pr_input =             rip6_input,
  353         .pr_output =            rip6_output,
  354         .pr_ctloutput =         rip6_ctloutput,
  355         .pr_usrreqs =           &rip6_usrreqs
  356 },
  357 };
  358 
  359 extern int in6_inithead(void **, int);
  360 
  361 struct domain inet6domain = {
  362         .dom_family =           AF_INET6,
  363         .dom_name =             "internet6",
  364         .dom_protosw =          (struct protosw *)inet6sw,
  365         .dom_protoswNPROTOSW =  (struct protosw *)
  366                                 &inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
  367         .dom_rtattach =         in6_inithead,
  368         .dom_rtoffset =         offsetof(struct sockaddr_in6, sin6_addr) << 3,
  369         .dom_maxrtkey =         sizeof(struct sockaddr_in6),
  370         .dom_ifattach =         in6_domifattach,
  371         .dom_ifdetach =         in6_domifdetach
  372 };
  373 
  374 DOMAIN_SET(inet6);
  375 
  376 /*
  377  * Internet configuration info
  378  */
  379 #ifndef IPV6FORWARDING
  380 #ifdef GATEWAY6
  381 #define IPV6FORWARDING  1       /* forward IP6 packets not for us */
  382 #else
  383 #define IPV6FORWARDING  0       /* don't forward IP6 packets not for us */
  384 #endif /* GATEWAY6 */
  385 #endif /* !IPV6FORWARDING */
  386 
  387 #ifndef IPV6_SENDREDIRECTS
  388 #define IPV6_SENDREDIRECTS      1
  389 #endif
  390 
  391 int     ip6_forwarding = IPV6FORWARDING;        /* act as router? */
  392 int     ip6_sendredirects = IPV6_SENDREDIRECTS;
  393 int     ip6_defhlim = IPV6_DEFHLIM;
  394 int     ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
  395 int     ip6_accept_rtadv = 0;   /* "IPV6FORWARDING ? 0 : 1" is dangerous */
  396 int     ip6_maxfragpackets;     /* initialized in frag6.c:frag6_init() */
  397 int     ip6_maxfrags;   /* initialized in frag6.c:frag6_init() */
  398 int     ip6_log_interval = 5;
  399 int     ip6_hdrnestlimit = 15;  /* How many header options will we process? */
  400 int     ip6_dad_count = 1;      /* DupAddrDetectionTransmits */
  401 int     ip6_auto_flowlabel = 1;
  402 int     ip6_gif_hlim = 0;
  403 int     ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */
  404 int     ip6_rr_prune = 5;       /* router renumbering prefix
  405                                  * walk list every 5 sec. */
  406 int     ip6_mcast_pmtu = 0;     /* enable pMTU discovery for multicast? */
  407 int     ip6_v6only = 1;
  408 
  409 int     ip6_keepfaith = 0;
  410 time_t  ip6_log_time = (time_t)0L;
  411 #ifdef IPSTEALTH
  412 int     ip6stealth = 0;
  413 #endif
  414 int     nd6_onlink_ns_rfc4861 = 0; /* allow 'on-link' nd6 NS (as in RFC 4861) */
  415 
  416 /* icmp6 */
  417 /*
  418  * BSDI4 defines these variables in in_proto.c...
  419  * XXX: what if we don't define INET? Should we define pmtu6_expire
  420  * or so? (jinmei@kame.net 19990310)
  421  */
  422 int pmtu_expire = 60*10;
  423 int pmtu_probe = 60*2;
  424 
  425 /* raw IP6 parameters */
  426 /*
  427  * Nominal space allocated to a raw ip socket.
  428  */
  429 #define RIPV6SNDQ       8192
  430 #define RIPV6RCVQ       8192
  431 
  432 u_long  rip6_sendspace = RIPV6SNDQ;
  433 u_long  rip6_recvspace = RIPV6RCVQ;
  434 
  435 /* ICMPV6 parameters */
  436 int     icmp6_rediraccept = 1;          /* accept and process redirects */
  437 int     icmp6_redirtimeout = 10 * 60;   /* 10 minutes */
  438 int     icmp6errppslim = 100;           /* 100pps */
  439 /* control how to respond to NI queries */
  440 int     icmp6_nodeinfo = (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
  441 
  442 /* UDP on IP6 parameters */
  443 int     udp6_sendspace = 9216;          /* really max datagram size */
  444 int     udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6));
  445                                         /* 40 1K datagrams */
  446 
  447 /*
  448  * sysctl related items.
  449  */
  450 SYSCTL_NODE(_net,       PF_INET6,       inet6,  CTLFLAG_RW,     0,
  451         "Internet6 Family");
  452 
  453 /* net.inet6 */
  454 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6,   ip6,    CTLFLAG_RW, 0,  "IP6");
  455 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6,  CTLFLAG_RW, 0,  "ICMP6");
  456 SYSCTL_NODE(_net_inet6, IPPROTO_UDP,    udp6,   CTLFLAG_RW, 0,  "UDP6");
  457 SYSCTL_NODE(_net_inet6, IPPROTO_TCP,    tcp6,   CTLFLAG_RW, 0,  "TCP6");
  458 #ifdef SCTP
  459 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP,   sctp6,  CTLFLAG_RW, 0,  "SCTP6");
  460 #endif
  461 #ifdef IPSEC
  462 SYSCTL_NODE(_net_inet6, IPPROTO_ESP,    ipsec6, CTLFLAG_RW, 0,  "IPSEC6");
  463 #endif /* IPSEC */
  464 
  465 /* net.inet6.ip6 */
  466 static int
  467 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
  468 {
  469         int error = 0;
  470         int old;
  471 
  472         error = SYSCTL_OUT(req, arg1, sizeof(int));
  473         if (error || !req->newptr)
  474                 return (error);
  475         old = ip6_temp_preferred_lifetime;
  476         error = SYSCTL_IN(req, arg1, sizeof(int));
  477         if (ip6_temp_preferred_lifetime <
  478             ip6_desync_factor + ip6_temp_regen_advance) {
  479                 ip6_temp_preferred_lifetime = old;
  480                 return (EINVAL);
  481         }
  482         return (error);
  483 }
  484 
  485 static int
  486 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
  487 {
  488         int error = 0;
  489         int old;
  490 
  491         error = SYSCTL_OUT(req, arg1, sizeof(int));
  492         if (error || !req->newptr)
  493                 return (error);
  494         old = ip6_temp_valid_lifetime;
  495         error = SYSCTL_IN(req, arg1, sizeof(int));
  496         if (ip6_temp_valid_lifetime < ip6_temp_preferred_lifetime) {
  497                 ip6_temp_preferred_lifetime = old;
  498                 return (EINVAL);
  499         }
  500         return (error);
  501 }
  502 
  503 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING,
  504         forwarding, CTLFLAG_RW,         &ip6_forwarding,        0, "");
  505 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS,
  506         redirect, CTLFLAG_RW,           &ip6_sendredirects,     0, "");
  507 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM,
  508         hlim, CTLFLAG_RW,               &ip6_defhlim,   0, "");
  509 SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_STATS, stats, CTLFLAG_RD,
  510         &ip6stat, ip6stat, "");
  511 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS,
  512         maxfragpackets, CTLFLAG_RW,     &ip6_maxfragpackets,    0, "");
  513 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV,
  514         accept_rtadv, CTLFLAG_RW,       &ip6_accept_rtadv,      0, "");
  515 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH,
  516         keepfaith, CTLFLAG_RW,          &ip6_keepfaith, 0, "");
  517 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL,
  518         log_interval, CTLFLAG_RW,       &ip6_log_interval,      0, "");
  519 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT,
  520         hdrnestlimit, CTLFLAG_RW,       &ip6_hdrnestlimit,      0, "");
  521 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT,
  522         dad_count, CTLFLAG_RW,  &ip6_dad_count, 0, "");
  523 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL,
  524         auto_flowlabel, CTLFLAG_RW,     &ip6_auto_flowlabel,    0, "");
  525 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM,
  526         defmcasthlim, CTLFLAG_RW,       &ip6_defmcasthlim,      0, "");
  527 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM,
  528         gifhlim, CTLFLAG_RW,    &ip6_gif_hlim,                  0, "");
  529 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION,
  530         kame_version, CTLFLAG_RD,       __KAME_VERSION,         0, "");
  531 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED,
  532         use_deprecated, CTLFLAG_RW,     &ip6_use_deprecated,    0, "");
  533 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE,
  534         rr_prune, CTLFLAG_RW,   &ip6_rr_prune,                  0, "");
  535 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR,
  536         use_tempaddr, CTLFLAG_RW, &ip6_use_tempaddr,            0, "");
  537 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
  538            CTLTYPE_INT|CTLFLAG_RW, &ip6_temp_preferred_lifetime, 0,
  539            sysctl_ip6_temppltime, "I", "");
  540 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
  541            CTLTYPE_INT|CTLFLAG_RW, &ip6_temp_valid_lifetime, 0,
  542            sysctl_ip6_tempvltime, "I", "");
  543 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY,
  544         v6only, CTLFLAG_RW,     &ip6_v6only,                    0, "");
  545 TUNABLE_INT("net.inet6.ip6.auto_linklocal", &ip6_auto_linklocal);
  546 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL,
  547         auto_linklocal, CTLFLAG_RW, &ip6_auto_linklocal,        0, "");
  548 SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, CTLFLAG_RD,
  549         &rip6stat, rip6stat, "");
  550 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR,
  551         prefer_tempaddr, CTLFLAG_RW, &ip6_prefer_tempaddr,      0, "");
  552 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE,
  553         use_defaultzone, CTLFLAG_RW, &ip6_use_defzone,          0,"");
  554 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS,
  555         maxfrags, CTLFLAG_RW,           &ip6_maxfrags,  0, "");
  556 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU,
  557         mcast_pmtu, CTLFLAG_RW,         &ip6_mcast_pmtu,        0, "");
  558 #ifdef IPSTEALTH
  559 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_RW,
  560         &ip6stealth, 0, "");
  561 #endif
  562 
  563 /* net.inet6.icmp6 */
  564 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT,
  565         rediraccept, CTLFLAG_RW,        &icmp6_rediraccept,     0, "");
  566 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT,
  567         redirtimeout, CTLFLAG_RW,       &icmp6_redirtimeout,    0, "");
  568 SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD,
  569         &icmp6stat, icmp6stat, "");
  570 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE,
  571         nd6_prune, CTLFLAG_RW,          &nd6_prune,     0, "");
  572 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY,
  573         nd6_delay, CTLFLAG_RW,          &nd6_delay,     0, "");
  574 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES,
  575         nd6_umaxtries, CTLFLAG_RW,      &nd6_umaxtries, 0, "");
  576 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES,
  577         nd6_mmaxtries, CTLFLAG_RW,      &nd6_mmaxtries, 0, "");
  578 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK,
  579         nd6_useloopback, CTLFLAG_RW,    &nd6_useloopback, 0, "");
  580 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO,
  581         nodeinfo, CTLFLAG_RW,   &icmp6_nodeinfo,        0, "");
  582 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT,
  583         errppslimit, CTLFLAG_RW,        &icmp6errppslim,        0, "");
  584 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT,
  585         nd6_maxnudhint, CTLFLAG_RW,     &nd6_maxnudhint, 0, "");
  586 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG,
  587         nd6_debug, CTLFLAG_RW,  &nd6_debug,             0, "");
  588 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
  589         nd6_onlink_ns_rfc4861, CTLFLAG_RW, &nd6_onlink_ns_rfc4861, 0,
  590         "Accept 'on-link' nd6 NS in compliance with RFC 4861.");

Cache object: c942ddebf9fdc01959adeb4f7864965a


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