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: releng/10.1/sys/netinet6/in6_proto.c 265946 2014-05-13 06:05:53Z kevlo $");
   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/domain.h>
   82 #include <sys/mbuf.h>
   83 #include <sys/systm.h>
   84 #include <sys/sysctl.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 SCTP
  115 #include <netinet/in_pcb.h>
  116 #include <netinet/sctp_pcb.h>
  117 #include <netinet/sctp.h>
  118 #include <netinet/sctp_var.h>
  119 #include <netinet6/sctp6_var.h>
  120 #endif /* SCTP */
  121 
  122 #ifdef IPSEC
  123 #include <netipsec/ipsec.h>
  124 #include <netipsec/ipsec6.h>
  125 #endif /* IPSEC */
  126 
  127 #include <netinet6/ip6protosw.h>
  128 
  129 /*
  130  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
  131  */
  132 FEATURE(inet6, "Internet Protocol version 6");
  133 
  134 extern  struct domain inet6domain;
  135 static  struct pr_usrreqs nousrreqs;
  136 
  137 #define PR_LISTEN       0
  138 #define PR_ABRTACPTDIS  0
  139 
  140 /* Spacer for loadable protocols. */
  141 #define IP6PROTOSPACER                          \
  142 {                                               \
  143         .pr_domain =            &inet6domain,   \
  144         .pr_protocol =          PROTO_SPACER,   \
  145         .pr_usrreqs =           &nousrreqs      \
  146 }
  147 
  148 struct ip6protosw inet6sw[] = {
  149 {
  150         .pr_type =              0,
  151         .pr_domain =            &inet6domain,
  152         .pr_protocol =          IPPROTO_IPV6,
  153         .pr_init =              ip6_init,
  154 #ifdef VIMAGE
  155         .pr_destroy =           ip6_destroy,
  156 #endif
  157         .pr_slowtimo =          frag6_slowtimo,
  158         .pr_drain =             frag6_drain,
  159         .pr_usrreqs =           &nousrreqs,
  160 },
  161 {
  162         .pr_type =              SOCK_DGRAM,
  163         .pr_domain =            &inet6domain,
  164         .pr_protocol =          IPPROTO_UDP,
  165         .pr_flags =             PR_ATOMIC|PR_ADDR,
  166         .pr_input =             udp6_input,
  167         .pr_ctlinput =          udp6_ctlinput,
  168         .pr_ctloutput =         ip6_ctloutput,
  169 #ifndef INET    /* Do not call initialization twice. */
  170         .pr_init =              udp_init,
  171 #endif
  172         .pr_usrreqs =           &udp6_usrreqs,
  173 },
  174 {
  175         .pr_type =              SOCK_STREAM,
  176         .pr_domain =            &inet6domain,
  177         .pr_protocol =          IPPROTO_TCP,
  178         .pr_flags =             PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
  179         .pr_input =             tcp6_input,
  180         .pr_ctlinput =          tcp6_ctlinput,
  181         .pr_ctloutput =         tcp_ctloutput,
  182 #ifndef INET    /* don't call initialization and timeout routines twice */
  183         .pr_init =              tcp_init,
  184         .pr_slowtimo =          tcp_slowtimo,
  185 #endif
  186         .pr_drain =             tcp_drain,
  187         .pr_usrreqs =           &tcp6_usrreqs,
  188 },
  189 #ifdef SCTP
  190 {
  191         .pr_type =              SOCK_SEQPACKET,
  192         .pr_domain =            &inet6domain,
  193         .pr_protocol =          IPPROTO_SCTP,
  194         .pr_flags =             PR_WANTRCVD,
  195         .pr_input =             sctp6_input,
  196         .pr_ctlinput =          sctp6_ctlinput,
  197         .pr_ctloutput = sctp_ctloutput,
  198         .pr_drain =             sctp_drain,
  199 #ifndef INET    /* Do not call initialization twice. */
  200         .pr_init =              sctp_init,
  201 #endif
  202         .pr_usrreqs =           &sctp6_usrreqs
  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_DGRAM,
  218         .pr_domain =            &inet6domain,
  219         .pr_protocol =          IPPROTO_UDPLITE,
  220         .pr_flags =             PR_ATOMIC|PR_ADDR,
  221         .pr_input =             udp6_input,
  222         .pr_ctlinput =          udplite6_ctlinput,
  223         .pr_ctloutput =         udp_ctloutput,
  224 #ifndef INET    /* Do not call initialization twice. */
  225         .pr_init =              udplite_init,
  226 #endif
  227         .pr_usrreqs =           &udp6_usrreqs,
  228 },
  229 {
  230         .pr_type =              SOCK_RAW,
  231         .pr_domain =            &inet6domain,
  232         .pr_protocol =          IPPROTO_RAW,
  233         .pr_flags =             PR_ATOMIC|PR_ADDR,
  234         .pr_input =             rip6_input,
  235         .pr_output =            rip6_output,
  236         .pr_ctlinput =          rip6_ctlinput,
  237         .pr_ctloutput =         rip6_ctloutput,
  238 #ifndef INET    /* Do not call initialization twice. */
  239         .pr_init =              rip_init,
  240 #endif
  241         .pr_usrreqs =           &rip6_usrreqs
  242 },
  243 {
  244         .pr_type =              SOCK_RAW,
  245         .pr_domain =            &inet6domain,
  246         .pr_protocol =          IPPROTO_ICMPV6,
  247         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  248         .pr_input =             icmp6_input,
  249         .pr_output =            rip6_output,
  250         .pr_ctlinput =          rip6_ctlinput,
  251         .pr_ctloutput =         rip6_ctloutput,
  252         .pr_fasttimo =          icmp6_fasttimo,
  253         .pr_slowtimo =          icmp6_slowtimo,
  254         .pr_usrreqs =           &rip6_usrreqs
  255 },
  256 {
  257         .pr_type =              SOCK_RAW,
  258         .pr_domain =            &inet6domain,
  259         .pr_protocol =          IPPROTO_DSTOPTS,
  260         .pr_flags =             PR_ATOMIC|PR_ADDR,
  261         .pr_input =             dest6_input,
  262         .pr_usrreqs =           &nousrreqs
  263 },
  264 {
  265         .pr_type =              SOCK_RAW,
  266         .pr_domain =            &inet6domain,
  267         .pr_protocol =          IPPROTO_ROUTING,
  268         .pr_flags =             PR_ATOMIC|PR_ADDR,
  269         .pr_input =             route6_input,
  270         .pr_usrreqs =           &nousrreqs
  271 },
  272 {
  273         .pr_type =              SOCK_RAW,
  274         .pr_domain =            &inet6domain,
  275         .pr_protocol =          IPPROTO_FRAGMENT,
  276         .pr_flags =             PR_ATOMIC|PR_ADDR,
  277         .pr_input =             frag6_input,
  278         .pr_usrreqs =           &nousrreqs
  279 },
  280 #ifdef IPSEC
  281 {
  282         .pr_type =              SOCK_RAW,
  283         .pr_domain =            &inet6domain,
  284         .pr_protocol =          IPPROTO_AH,
  285         .pr_flags =             PR_ATOMIC|PR_ADDR,
  286         .pr_input =             ipsec6_common_input,
  287         .pr_usrreqs =           &nousrreqs,
  288 },
  289 {
  290         .pr_type =              SOCK_RAW,
  291         .pr_domain =            &inet6domain,
  292         .pr_protocol =          IPPROTO_ESP,
  293         .pr_flags =             PR_ATOMIC|PR_ADDR,
  294         .pr_input =             ipsec6_common_input,
  295         .pr_ctlinput =          esp6_ctlinput,
  296         .pr_usrreqs =           &nousrreqs,
  297 },
  298 {
  299         .pr_type =              SOCK_RAW,
  300         .pr_domain =            &inet6domain,
  301         .pr_protocol =          IPPROTO_IPCOMP,
  302         .pr_flags =             PR_ATOMIC|PR_ADDR,
  303         .pr_input =             ipsec6_common_input,
  304         .pr_usrreqs =           &nousrreqs,
  305 },
  306 #endif /* IPSEC */
  307 #ifdef INET
  308 {
  309         .pr_type =              SOCK_RAW,
  310         .pr_domain =            &inet6domain,
  311         .pr_protocol =          IPPROTO_IPV4,
  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_init =              encap_init,
  317         .pr_usrreqs =           &rip6_usrreqs
  318 },
  319 #endif /* INET */
  320 {
  321         .pr_type =              SOCK_RAW,
  322         .pr_domain =            &inet6domain,
  323         .pr_protocol =          IPPROTO_IPV6,
  324         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  325         .pr_input =             encap6_input,
  326         .pr_output =            rip6_output,
  327         .pr_ctloutput =         rip6_ctloutput,
  328         .pr_init =              encap_init,
  329         .pr_usrreqs =           &rip6_usrreqs
  330 },
  331 {
  332         .pr_type =              SOCK_RAW,
  333         .pr_domain =            &inet6domain,
  334         .pr_protocol =          IPPROTO_PIM,
  335         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  336         .pr_input =             encap6_input,
  337         .pr_output =            rip6_output,
  338         .pr_ctloutput =         rip6_ctloutput,
  339         .pr_usrreqs =           &rip6_usrreqs
  340 },
  341 /* Spacer n-times for loadable protocols. */
  342 IP6PROTOSPACER,
  343 IP6PROTOSPACER,
  344 IP6PROTOSPACER,
  345 IP6PROTOSPACER,
  346 IP6PROTOSPACER,
  347 IP6PROTOSPACER,
  348 IP6PROTOSPACER,
  349 IP6PROTOSPACER,
  350 /* raw wildcard */
  351 {
  352         .pr_type =              SOCK_RAW,
  353         .pr_domain =            &inet6domain,
  354         .pr_flags =             PR_ATOMIC|PR_ADDR,
  355         .pr_input =             rip6_input,
  356         .pr_output =            rip6_output,
  357         .pr_ctloutput =         rip6_ctloutput,
  358         .pr_usrreqs =           &rip6_usrreqs
  359 },
  360 };
  361 
  362 extern int in6_inithead(void **, int);
  363 #ifdef VIMAGE
  364 extern int in6_detachhead(void **, int);
  365 #endif
  366 
  367 struct domain inet6domain = {
  368         .dom_family =           AF_INET6,
  369         .dom_name =             "internet6",
  370         .dom_protosw =          (struct protosw *)inet6sw,
  371         .dom_protoswNPROTOSW =  (struct protosw *)
  372                                 &inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
  373 #ifdef RADIX_MPATH
  374         .dom_rtattach =         rn6_mpath_inithead,
  375 #else
  376         .dom_rtattach =         in6_inithead,
  377 #endif
  378 #ifdef VIMAGE
  379         .dom_rtdetach =         in6_detachhead,
  380 #endif
  381         .dom_rtoffset =         offsetof(struct sockaddr_in6, sin6_addr) << 3,
  382         .dom_maxrtkey =         sizeof(struct sockaddr_in6),
  383         .dom_ifattach =         in6_domifattach,
  384         .dom_ifdetach =         in6_domifdetach
  385 };
  386 
  387 VNET_DOMAIN_SET(inet6);
  388 
  389 /*
  390  * Internet configuration info
  391  */
  392 #ifndef IPV6FORWARDING
  393 #ifdef GATEWAY6
  394 #define IPV6FORWARDING  1       /* forward IP6 packets not for us */
  395 #else
  396 #define IPV6FORWARDING  0       /* don't forward IP6 packets not for us */
  397 #endif /* GATEWAY6 */
  398 #endif /* !IPV6FORWARDING */
  399 
  400 #ifndef IPV6_SENDREDIRECTS
  401 #define IPV6_SENDREDIRECTS      1
  402 #endif
  403 
  404 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING;      /* act as router? */
  405 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS;
  406 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM;
  407 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS;
  408 VNET_DEFINE(int, ip6_accept_rtadv) = 0;
  409 VNET_DEFINE(int, ip6_no_radr) = 0;
  410 VNET_DEFINE(int, ip6_norbit_raif) = 0;
  411 VNET_DEFINE(int, ip6_rfc6204w3) = 0;
  412 VNET_DEFINE(int, ip6_maxfragpackets);   /* initialized in frag6.c:frag6_init() */
  413 VNET_DEFINE(int, ip6_maxfrags);         /* initialized in frag6.c:frag6_init() */
  414 VNET_DEFINE(int, ip6_log_interval) = 5;
  415 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we
  416                                          * process? */
  417 VNET_DEFINE(int, ip6_dad_count) = 1;    /* DupAddrDetectionTransmits */
  418 VNET_DEFINE(int, ip6_auto_flowlabel) = 1;
  419 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr
  420                                          * (RFC2462 5.5.4) */
  421 VNET_DEFINE(int, ip6_rr_prune) = 5;     /* router renumbering prefix
  422                                          * walk list every 5 sec. */
  423 VNET_DEFINE(int, ip6_mcast_pmtu) = 0;   /* enable pMTU discovery for multicast? */
  424 VNET_DEFINE(int, ip6_v6only) = 1;
  425 
  426 VNET_DEFINE(int, ip6_keepfaith) = 0;
  427 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L;
  428 #ifdef IPSTEALTH
  429 VNET_DEFINE(int, ip6stealth) = 0;
  430 #endif
  431 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS
  432                                              * (RFC 4861) */
  433 
  434 /* icmp6 */
  435 /*
  436  * BSDI4 defines these variables in in_proto.c...
  437  * XXX: what if we don't define INET? Should we define pmtu6_expire
  438  * or so? (jinmei@kame.net 19990310)
  439  */
  440 VNET_DEFINE(int, pmtu_expire) = 60*10;
  441 VNET_DEFINE(int, pmtu_probe) = 60*2;
  442 
  443 /* ICMPV6 parameters */
  444 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */
  445 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */
  446 VNET_DEFINE(int, icmp6errppslim) = 100;         /* 100pps */
  447 /* control how to respond to NI queries */
  448 VNET_DEFINE(int, icmp6_nodeinfo) =
  449     (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
  450 VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1;
  451 
  452 /*
  453  * sysctl related items.
  454  */
  455 SYSCTL_NODE(_net,       PF_INET6,       inet6,  CTLFLAG_RW,     0,
  456         "Internet6 Family");
  457 
  458 /* net.inet6 */
  459 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6,   ip6,    CTLFLAG_RW, 0,  "IP6");
  460 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6,  CTLFLAG_RW, 0,  "ICMP6");
  461 SYSCTL_NODE(_net_inet6, IPPROTO_UDP,    udp6,   CTLFLAG_RW, 0,  "UDP6");
  462 SYSCTL_NODE(_net_inet6, IPPROTO_TCP,    tcp6,   CTLFLAG_RW, 0,  "TCP6");
  463 #ifdef SCTP
  464 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP,   sctp6,  CTLFLAG_RW, 0,  "SCTP6");
  465 #endif
  466 #ifdef IPSEC
  467 SYSCTL_NODE(_net_inet6, IPPROTO_ESP,    ipsec6, CTLFLAG_RW, 0,  "IPSEC6");
  468 #endif /* IPSEC */
  469 
  470 /* net.inet6.ip6 */
  471 static int
  472 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
  473 {
  474         int error = 0;
  475         int old;
  476 
  477         VNET_SYSCTL_ARG(req, arg1);
  478 
  479         error = SYSCTL_OUT(req, arg1, sizeof(int));
  480         if (error || !req->newptr)
  481                 return (error);
  482         old = V_ip6_temp_preferred_lifetime;
  483         error = SYSCTL_IN(req, arg1, sizeof(int));
  484         if (V_ip6_temp_preferred_lifetime <
  485             V_ip6_desync_factor + V_ip6_temp_regen_advance) {
  486                 V_ip6_temp_preferred_lifetime = old;
  487                 return (EINVAL);
  488         }
  489         return (error);
  490 }
  491 
  492 static int
  493 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
  494 {
  495         int error = 0;
  496         int old;
  497 
  498         VNET_SYSCTL_ARG(req, arg1);
  499 
  500         error = SYSCTL_OUT(req, arg1, sizeof(int));
  501         if (error || !req->newptr)
  502                 return (error);
  503         old = V_ip6_temp_valid_lifetime;
  504         error = SYSCTL_IN(req, arg1, sizeof(int));
  505         if (V_ip6_temp_valid_lifetime < V_ip6_temp_preferred_lifetime) {
  506                 V_ip6_temp_preferred_lifetime = old;
  507                 return (EINVAL);
  508         }
  509         return (error);
  510 }
  511 
  512 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, CTLFLAG_RW,
  513         &VNET_NAME(ip6_forwarding), 0, "");
  514 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, CTLFLAG_RW,
  515         &VNET_NAME(ip6_sendredirects), 0, "");
  516 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, CTLFLAG_RW,
  517         &VNET_NAME(ip6_defhlim), 0, "");
  518 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat,
  519     ip6stat, "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)");
  520 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
  521         CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0, "");
  522 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv,
  523         CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0,
  524         "Default value of per-interface flag for accepting ICMPv6 Router"
  525         "Advertisement messages");
  526 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr,
  527         CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0,
  528         "Default value of per-interface flag to control whether routers "
  529         "sending ICMPv6 RA messages on that interface are added into the "
  530         "default router list.");
  531 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif, CTLFLAG_RW,
  532         &VNET_NAME(ip6_norbit_raif), 0,
  533         "Always set 0 to R flag in ICMPv6 NA messages when accepting RA"
  534         " on the interface.");
  535 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3,
  536         CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0,
  537         "Accept the default router list from ICMPv6 RA messages even "
  538         "when packet forwarding enabled.");
  539 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH, keepfaith, CTLFLAG_RW,
  540         &VNET_NAME(ip6_keepfaith), 0, "");
  541 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval,
  542         CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, "");
  543 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit,
  544         CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, "");
  545 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, CTLFLAG_RW,
  546         &VNET_NAME(ip6_dad_count), 0, "");
  547 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel,
  548         CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, "");
  549 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim,
  550         CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, "");
  551 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version,
  552         CTLFLAG_RD, __KAME_VERSION, 0, "");
  553 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated,
  554         CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, "");
  555 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, CTLFLAG_RW,
  556         &VNET_NAME(ip6_rr_prune), 0, "");
  557 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr,
  558         CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, "");
  559 SYSCTL_VNET_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
  560         CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ip6_temp_preferred_lifetime), 0,
  561         sysctl_ip6_temppltime, "I", "");
  562 SYSCTL_VNET_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
  563         CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ip6_temp_valid_lifetime), 0,
  564         sysctl_ip6_tempvltime, "I", "");
  565 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only, CTLFLAG_RW,
  566         &VNET_NAME(ip6_v6only), 0, "");
  567 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal,
  568         CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0,
  569         "Default value of per-interface flag for automatically adding an IPv6"
  570         " link-local address to interfaces when attached");
  571 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats,
  572     struct rip6stat, rip6stat,
  573     "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)");
  574 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr,
  575         CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0, "");
  576 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone,
  577         CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0,"");
  578 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags, CTLFLAG_RW,
  579         &VNET_NAME(ip6_maxfrags), 0, "");
  580 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu, CTLFLAG_RW,
  581         &VNET_NAME(ip6_mcast_pmtu), 0, "");
  582 #ifdef IPSTEALTH
  583 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_RW,
  584         &VNET_NAME(ip6stealth), 0, "");
  585 #endif
  586 
  587 /* net.inet6.icmp6 */
  588 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept,
  589         CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0, "");
  590 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout,
  591         CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0, "");
  592 SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats,
  593     struct icmp6stat, icmp6stat,
  594     "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)");
  595 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, CTLFLAG_RW,
  596         &VNET_NAME(nd6_prune), 0, "");
  597 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, CTLFLAG_RW,
  598         &VNET_NAME(nd6_delay), 0, "");
  599 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries,
  600         CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0, "");
  601 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries,
  602         CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0, "");
  603 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback,
  604         CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0, "");
  605 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo, CTLFLAG_RW,
  606         &VNET_NAME(icmp6_nodeinfo), 0, "");
  607 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX,
  608         nodeinfo_oldmcprefix, CTLFLAG_RW,
  609         &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0, 
  610         "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup"
  611         " for compatibility with KAME implememtation.");
  612 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit,
  613         CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, "");
  614 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint,
  615         CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0, "");
  616 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug, CTLFLAG_RW,
  617         &VNET_NAME(nd6_debug), 0, "");
  618 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
  619         nd6_onlink_ns_rfc4861, CTLFLAG_RW, &VNET_NAME(nd6_onlink_ns_rfc4861),
  620         0, "Accept 'on-link' nd6 NS in compliance with RFC 4861.");

Cache object: 3e92af32dd2999c21bb62af0f7808852


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