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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

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

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    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/11.1/sys/netinet6/in6_proto.c 337828 2018-08-15 02:30:11Z delphij $");
   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 #include <netinet6/ip6protosw.h>
  125 
  126 /*
  127  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
  128  */
  129 FEATURE(inet6, "Internet Protocol version 6");
  130 
  131 extern  struct domain inet6domain;
  132 static  struct pr_usrreqs nousrreqs;
  133 
  134 #define PR_LISTEN       0
  135 #define PR_ABRTACPTDIS  0
  136 
  137 /* Spacer for loadable protocols. */
  138 #define IP6PROTOSPACER                          \
  139 {                                               \
  140         .pr_domain =            &inet6domain,   \
  141         .pr_protocol =          PROTO_SPACER,   \
  142         .pr_usrreqs =           &nousrreqs      \
  143 }
  144 
  145 struct protosw inet6sw[] = {
  146 {
  147         .pr_type =              0,
  148         .pr_domain =            &inet6domain,
  149         .pr_protocol =          IPPROTO_IPV6,
  150         .pr_init =              ip6_init,
  151         .pr_slowtimo =          frag6_slowtimo,
  152         .pr_drain =             frag6_drain,
  153         .pr_usrreqs =           &nousrreqs,
  154 },
  155 {
  156         .pr_type =              SOCK_DGRAM,
  157         .pr_domain =            &inet6domain,
  158         .pr_protocol =          IPPROTO_UDP,
  159         .pr_flags =             PR_ATOMIC|PR_ADDR,
  160         .pr_input =             udp6_input,
  161         .pr_ctlinput =          udp6_ctlinput,
  162         .pr_ctloutput =         ip6_ctloutput,
  163 #ifndef INET    /* Do not call initialization twice. */
  164         .pr_init =              udp_init,
  165 #endif
  166         .pr_usrreqs =           &udp6_usrreqs,
  167 },
  168 {
  169         .pr_type =              SOCK_STREAM,
  170         .pr_domain =            &inet6domain,
  171         .pr_protocol =          IPPROTO_TCP,
  172         .pr_flags =             PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
  173         .pr_input =             tcp6_input,
  174         .pr_ctlinput =          tcp6_ctlinput,
  175         .pr_ctloutput =         tcp_ctloutput,
  176 #ifndef INET    /* don't call initialization and timeout routines twice */
  177         .pr_init =              tcp_init,
  178         .pr_slowtimo =          tcp_slowtimo,
  179 #endif
  180         .pr_drain =             tcp_drain,
  181         .pr_usrreqs =           &tcp6_usrreqs,
  182 },
  183 #ifdef SCTP
  184 {
  185         .pr_type =              SOCK_SEQPACKET,
  186         .pr_domain =            &inet6domain,
  187         .pr_protocol =          IPPROTO_SCTP,
  188         .pr_flags =             PR_WANTRCVD|PR_LASTHDR,
  189         .pr_input =             sctp6_input,
  190         .pr_ctlinput =          sctp6_ctlinput,
  191         .pr_ctloutput = sctp_ctloutput,
  192         .pr_drain =             sctp_drain,
  193 #ifndef INET    /* Do not call initialization twice. */
  194         .pr_init =              sctp_init,
  195 #endif
  196         .pr_usrreqs =           &sctp6_usrreqs
  197 },
  198 {
  199         .pr_type =              SOCK_STREAM,
  200         .pr_domain =            &inet6domain,
  201         .pr_protocol =          IPPROTO_SCTP,
  202         .pr_flags =             PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR,
  203         .pr_input =             sctp6_input,
  204         .pr_ctlinput =          sctp6_ctlinput,
  205         .pr_ctloutput =         sctp_ctloutput,
  206         .pr_drain =             sctp_drain,
  207         .pr_usrreqs =           &sctp6_usrreqs
  208 },
  209 #endif /* SCTP */
  210 {
  211         .pr_type =              SOCK_DGRAM,
  212         .pr_domain =            &inet6domain,
  213         .pr_protocol =          IPPROTO_UDPLITE,
  214         .pr_flags =             PR_ATOMIC|PR_ADDR,
  215         .pr_input =             udp6_input,
  216         .pr_ctlinput =          udplite6_ctlinput,
  217         .pr_ctloutput =         udp_ctloutput,
  218 #ifndef INET    /* Do not call initialization twice. */
  219         .pr_init =              udplite_init,
  220 #endif
  221         .pr_usrreqs =           &udp6_usrreqs,
  222 },
  223 {
  224         .pr_type =              SOCK_RAW,
  225         .pr_domain =            &inet6domain,
  226         .pr_protocol =          IPPROTO_RAW,
  227         .pr_flags =             PR_ATOMIC|PR_ADDR,
  228         .pr_input =             rip6_input,
  229         .pr_output =            rip6_output,
  230         .pr_ctlinput =          rip6_ctlinput,
  231         .pr_ctloutput =         rip6_ctloutput,
  232 #ifndef INET    /* Do not call initialization twice. */
  233         .pr_init =              rip_init,
  234 #endif
  235         .pr_usrreqs =           &rip6_usrreqs
  236 },
  237 {
  238         .pr_type =              SOCK_RAW,
  239         .pr_domain =            &inet6domain,
  240         .pr_protocol =          IPPROTO_ICMPV6,
  241         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  242         .pr_input =             icmp6_input,
  243         .pr_output =            rip6_output,
  244         .pr_ctlinput =          rip6_ctlinput,
  245         .pr_ctloutput =         rip6_ctloutput,
  246         .pr_fasttimo =          icmp6_fasttimo,
  247         .pr_slowtimo =          icmp6_slowtimo,
  248         .pr_usrreqs =           &rip6_usrreqs
  249 },
  250 {
  251         .pr_type =              SOCK_RAW,
  252         .pr_domain =            &inet6domain,
  253         .pr_protocol =          IPPROTO_DSTOPTS,
  254         .pr_flags =             PR_ATOMIC|PR_ADDR,
  255         .pr_input =             dest6_input,
  256         .pr_usrreqs =           &nousrreqs
  257 },
  258 {
  259         .pr_type =              SOCK_RAW,
  260         .pr_domain =            &inet6domain,
  261         .pr_protocol =          IPPROTO_ROUTING,
  262         .pr_flags =             PR_ATOMIC|PR_ADDR,
  263         .pr_input =             route6_input,
  264         .pr_usrreqs =           &nousrreqs
  265 },
  266 {
  267         .pr_type =              SOCK_RAW,
  268         .pr_domain =            &inet6domain,
  269         .pr_protocol =          IPPROTO_FRAGMENT,
  270         .pr_flags =             PR_ATOMIC|PR_ADDR,
  271         .pr_input =             frag6_input,
  272         .pr_usrreqs =           &nousrreqs
  273 },
  274 #ifdef INET
  275 {
  276         .pr_type =              SOCK_RAW,
  277         .pr_domain =            &inet6domain,
  278         .pr_protocol =          IPPROTO_IPV4,
  279         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  280         .pr_input =             encap6_input,
  281         .pr_output =            rip6_output,
  282         .pr_ctloutput =         rip6_ctloutput,
  283         .pr_init =              encap_init,
  284         .pr_usrreqs =           &rip6_usrreqs
  285 },
  286 #endif /* INET */
  287 {
  288         .pr_type =              SOCK_RAW,
  289         .pr_domain =            &inet6domain,
  290         .pr_protocol =          IPPROTO_IPV6,
  291         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  292         .pr_input =             encap6_input,
  293         .pr_output =            rip6_output,
  294         .pr_ctloutput =         rip6_ctloutput,
  295         .pr_init =              encap_init,
  296         .pr_usrreqs =           &rip6_usrreqs
  297 },
  298 {
  299         .pr_type =              SOCK_RAW,
  300         .pr_domain =            &inet6domain,
  301         .pr_protocol =          IPPROTO_GRE,
  302         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  303         .pr_input =             encap6_input,
  304         .pr_output =            rip6_output,
  305         .pr_ctloutput =         rip6_ctloutput,
  306         .pr_init =              encap_init,
  307         .pr_usrreqs =           &rip6_usrreqs
  308 },
  309 {
  310         .pr_type =              SOCK_RAW,
  311         .pr_domain =            &inet6domain,
  312         .pr_protocol =          IPPROTO_PIM,
  313         .pr_flags =             PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  314         .pr_input =             encap6_input,
  315         .pr_output =            rip6_output,
  316         .pr_ctloutput =         rip6_ctloutput,
  317         .pr_usrreqs =           &rip6_usrreqs
  318 },
  319 /* Spacer n-times for loadable protocols. */
  320 IP6PROTOSPACER,
  321 IP6PROTOSPACER,
  322 IP6PROTOSPACER,
  323 IP6PROTOSPACER,
  324 IP6PROTOSPACER,
  325 IP6PROTOSPACER,
  326 IP6PROTOSPACER,
  327 IP6PROTOSPACER,
  328 /* raw wildcard */
  329 {
  330         .pr_type =              SOCK_RAW,
  331         .pr_domain =            &inet6domain,
  332         .pr_flags =             PR_ATOMIC|PR_ADDR,
  333         .pr_input =             rip6_input,
  334         .pr_output =            rip6_output,
  335         .pr_ctloutput =         rip6_ctloutput,
  336         .pr_usrreqs =           &rip6_usrreqs
  337 },
  338 };
  339 
  340 extern int in6_inithead(void **, int);
  341 #ifdef VIMAGE
  342 extern int in6_detachhead(void **, int);
  343 #endif
  344 
  345 struct domain inet6domain = {
  346         .dom_family =           AF_INET6,
  347         .dom_name =             "internet6",
  348         .dom_protosw =          (struct protosw *)inet6sw,
  349         .dom_protoswNPROTOSW =  (struct protosw *)&inet6sw[nitems(inet6sw)],
  350 #ifdef RADIX_MPATH
  351         .dom_rtattach =         rn6_mpath_inithead,
  352 #else
  353         .dom_rtattach =         in6_inithead,
  354 #endif
  355 #ifdef VIMAGE
  356         .dom_rtdetach =         in6_detachhead,
  357 #endif
  358         .dom_ifattach =         in6_domifattach,
  359         .dom_ifdetach =         in6_domifdetach,
  360         .dom_ifmtu    =         in6_domifmtu
  361 };
  362 
  363 VNET_DOMAIN_SET(inet6);
  364 
  365 /*
  366  * Internet configuration info
  367  */
  368 #ifndef IPV6FORWARDING
  369 #ifdef GATEWAY6
  370 #define IPV6FORWARDING  1       /* forward IP6 packets not for us */
  371 #else
  372 #define IPV6FORWARDING  0       /* don't forward IP6 packets not for us */
  373 #endif /* GATEWAY6 */
  374 #endif /* !IPV6FORWARDING */
  375 
  376 #ifndef IPV6_SENDREDIRECTS
  377 #define IPV6_SENDREDIRECTS      1
  378 #endif
  379 
  380 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING;      /* act as router? */
  381 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS;
  382 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM;
  383 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS;
  384 VNET_DEFINE(int, ip6_accept_rtadv) = 0;
  385 VNET_DEFINE(int, ip6_no_radr) = 0;
  386 VNET_DEFINE(int, ip6_norbit_raif) = 0;
  387 VNET_DEFINE(int, ip6_rfc6204w3) = 0;
  388 VNET_DEFINE(int, ip6_maxfragpackets);   /* initialized in frag6.c:frag6_init() */
  389 int ip6_maxfrags;               /* initialized in frag6.c:frag6_init() */
  390 VNET_DEFINE(int, ip6_maxfragbucketsize);/* initialized in frag6.c:frag6_init() */
  391 VNET_DEFINE(int, ip6_maxfragsperpacket); /* initialized in frag6.c:frag6_init() */
  392 VNET_DEFINE(int, ip6_log_interval) = 5;
  393 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we
  394                                          * process? */
  395 VNET_DEFINE(int, ip6_dad_count) = 1;    /* DupAddrDetectionTransmits */
  396 VNET_DEFINE(int, ip6_auto_flowlabel) = 1;
  397 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr
  398                                          * (RFC2462 5.5.4) */
  399 VNET_DEFINE(int, ip6_rr_prune) = 5;     /* router renumbering prefix
  400                                          * walk list every 5 sec. */
  401 VNET_DEFINE(int, ip6_mcast_pmtu) = 0;   /* enable pMTU discovery for multicast? */
  402 VNET_DEFINE(int, ip6_v6only) = 1;
  403 
  404 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L;
  405 #ifdef IPSTEALTH
  406 VNET_DEFINE(int, ip6stealth) = 0;
  407 #endif
  408 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS
  409                                              * (RFC 4861) */
  410 
  411 /* icmp6 */
  412 /*
  413  * BSDI4 defines these variables in in_proto.c...
  414  * XXX: what if we don't define INET? Should we define pmtu6_expire
  415  * or so? (jinmei@kame.net 19990310)
  416  */
  417 VNET_DEFINE(int, pmtu_expire) = 60*10;
  418 VNET_DEFINE(int, pmtu_probe) = 60*2;
  419 
  420 /* ICMPV6 parameters */
  421 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */
  422 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */
  423 VNET_DEFINE(int, icmp6errppslim) = 100;         /* 100pps */
  424 /* control how to respond to NI queries */
  425 VNET_DEFINE(int, icmp6_nodeinfo) =
  426     (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
  427 VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1;
  428 
  429 /*
  430  * sysctl related items.
  431  */
  432 SYSCTL_NODE(_net,       PF_INET6,       inet6,  CTLFLAG_RW,     0,
  433         "Internet6 Family");
  434 
  435 /* net.inet6 */
  436 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6,   ip6,    CTLFLAG_RW, 0,  "IP6");
  437 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6,  CTLFLAG_RW, 0,  "ICMP6");
  438 SYSCTL_NODE(_net_inet6, IPPROTO_UDP,    udp6,   CTLFLAG_RW, 0,  "UDP6");
  439 SYSCTL_NODE(_net_inet6, IPPROTO_TCP,    tcp6,   CTLFLAG_RW, 0,  "TCP6");
  440 #ifdef SCTP
  441 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP,   sctp6,  CTLFLAG_RW, 0,  "SCTP6");
  442 #endif
  443 #if defined(IPSEC) || defined(IPSEC_SUPPORT)
  444 SYSCTL_NODE(_net_inet6, IPPROTO_ESP,    ipsec6, CTLFLAG_RW, 0,  "IPSEC6");
  445 #endif /* IPSEC */
  446 
  447 /* net.inet6.ip6 */
  448 static int
  449 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
  450 {
  451         int error, val;
  452 
  453         val = V_ip6_temp_preferred_lifetime;
  454         error = sysctl_handle_int(oidp, &val, 0, req);
  455         if (error != 0 || !req->newptr)
  456                 return (error);
  457         if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance)
  458                 return (EINVAL);
  459         V_ip6_temp_preferred_lifetime = val;
  460         return (0);
  461 }
  462 
  463 static int
  464 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
  465 {
  466         int error, val;
  467 
  468         val = V_ip6_temp_valid_lifetime;
  469         error = sysctl_handle_int(oidp, &val, 0, req);
  470         if (error != 0 || !req->newptr)
  471                 return (error);
  472         if (val < V_ip6_temp_preferred_lifetime)
  473                 return (EINVAL);
  474         V_ip6_temp_valid_lifetime = val;
  475         return (0);
  476 }
  477 
  478 static int
  479 sysctl_ip6_maxfragpackets(SYSCTL_HANDLER_ARGS)
  480 {
  481         int error, val;
  482 
  483         val = V_ip6_maxfragpackets;
  484         error = sysctl_handle_int(oidp, &val, 0, req);
  485         if (error != 0 || !req->newptr)
  486                 return (error);
  487         V_ip6_maxfragpackets = val;
  488         frag6_set_bucketsize();
  489         return (0);
  490 }
  491 
  492 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding,
  493         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0,
  494         "Enable forwarding of IPv6 packets between interfaces");
  495 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect,
  496         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0,
  497         "Send ICMPv6 redirects for unforwardable IPv6 packets");
  498 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim,
  499         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0,
  500         "Default hop limit to use for outgoing IPv6 packets");
  501 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat,
  502         ip6stat,
  503         "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)");
  504 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
  505         CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, NULL, 0,
  506         sysctl_ip6_maxfragpackets, "I",
  507         "Default maximum number of outstanding fragmented IPv6 packets. "
  508         "A value of 0 means no fragmented packets will be accepted, while a "
  509         "a value of -1 means no limit");
  510 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv,
  511         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0,
  512         "Default value of per-interface flag for accepting ICMPv6 RA messages");
  513 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr,
  514         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0,
  515         "Default value of per-interface flag to control whether routers "
  516         "sending ICMPv6 RA messages on that interface are added into the "
  517         "default router list");
  518 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif,
  519         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0,
  520         "Always set clear the R flag in ICMPv6 NA messages when accepting RA "
  521         "on the interface");
  522 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3,
  523         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0,
  524         "Accept the default router list from ICMPv6 RA messages even "
  525         "when packet forwarding is enabled");
  526 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval,
  527         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0,
  528         "Frequency in seconds at which to log IPv6 forwarding errors");
  529 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit,
  530         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0,
  531         "Default maximum number of IPv6 extension headers permitted on "
  532         "incoming IPv6 packets, 0 for no artificial limit");
  533 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count,
  534         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0,
  535         "Number of ICMPv6 NS messages sent during duplicate address detection");
  536 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel,
  537         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0,
  538         "Provide an IPv6 flowlabel in outbound packets");
  539 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim,
  540         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0,
  541         "Default hop limit for IPv6 multicast packets originating from this "
  542         "node");
  543 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version,
  544         CTLFLAG_RD, __KAME_VERSION, 0,
  545         "KAME version string");
  546 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated,
  547         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0,
  548         "Allow the use of addresses whose preferred lifetimes have expired");
  549 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune,
  550         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0,
  551         ""); /* XXX unused */
  552 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr,
  553         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0,
  554         "Create RFC3041 temporary addresses for autoconfigured addresses");
  555 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
  556         CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
  557         NULL, 0, sysctl_ip6_temppltime, "I",
  558         "Maximum preferred lifetime for temporary addresses");
  559 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
  560         CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
  561         NULL, 0, sysctl_ip6_tempvltime, "I",
  562         "Maximum valid lifetime for temporary addresses");
  563 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only,
  564         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0,
  565         "Restrict AF_INET6 sockets to IPv6 addresses only");
  566 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal,
  567         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0,
  568         "Default value of per-interface flag for automatically adding an IPv6 "
  569         "link-local address to interfaces when attached");
  570 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats,
  571         struct rip6stat, rip6stat,
  572         "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)");
  573 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr,
  574         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0,
  575         "Prefer RFC3041 temporary addresses in source address selection");
  576 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone,
  577         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0,
  578         "Use the default scope zone when none is specified");
  579 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags,
  580         CTLFLAG_RW, &ip6_maxfrags, 0,
  581         "Maximum allowed number of outstanding IPv6 packet fragments. "
  582         "A value of 0 means no fragmented packets will be accepted, while a "
  583         "a value of -1 means no limit");
  584 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGBUCKETSIZE, maxfragbucketsize,
  585         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragbucketsize), 0,
  586         "Maximum number of reassembly queues per hash bucket");
  587 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGSPERPACKET, maxfragsperpacket,
  588         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragsperpacket), 0,
  589         "Maximum allowed number of fragments per packet");
  590 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu,
  591         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0,
  592         "Enable path MTU discovery for multicast packets");
  593 #ifdef IPSTEALTH
  594 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW,
  595         &VNET_NAME(ip6stealth), 0,
  596         "Forward IPv6 packets without decrementing their TTL");
  597 #endif
  598 
  599 /* net.inet6.icmp6 */
  600 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept,
  601         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0,
  602         "Accept ICMPv6 redirect messages");
  603 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout,
  604         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0,
  605         ""); /* XXX unused */
  606 SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats,
  607         struct icmp6stat, icmp6stat,
  608         "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)");
  609 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune,
  610         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0,
  611         "Frequency in seconds of checks for expired prefixes and routers");
  612 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay,
  613         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0,
  614         "Delay in seconds before probing for reachability");
  615 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries,
  616         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0,
  617         "Number of ICMPv6 NS messages sent during reachability detection");
  618 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries,
  619         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0,
  620         "Number of ICMPv6 NS messages sent during address resolution");
  621 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback,
  622         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0,
  623         "Create a loopback route when configuring an IPv6 address");
  624 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo,
  625         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0,
  626         "Mask of enabled RF4620 node information query types");
  627 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX,
  628         nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW,
  629         &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0,
  630         "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup "
  631         "for compatibility with KAME implementation");
  632 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit,
  633         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0,
  634         "Maximum number of ICMPv6 error messages per second");
  635 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint,
  636         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0,
  637         ""); /* XXX unused */
  638 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug,
  639         CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0,
  640         "Log NDP debug messages");
  641 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
  642         nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW,
  643         &VNET_NAME(nd6_onlink_ns_rfc4861), 0,
  644         "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861");

Cache object: 37b398bac4e82fe36efbc7bbd1b3c967


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.