The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/bsd/netinet6/in6_proto.c

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    1 /*      $FreeBSD: src/sys/netinet6/in6_proto.c,v 1.19 2002/10/16 02:25:05 sam Exp $     */
    2 /*      $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $      */
    3 
    4 /*
    5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. Neither the name of the project nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  */
   32 
   33 /*
   34  * Copyright (c) 1982, 1986, 1993
   35  *      The Regents of the University of California.  All rights reserved.
   36  *
   37  * Redistribution and use in source and binary forms, with or without
   38  * modification, are permitted provided that the following conditions
   39  * are met:
   40  * 1. Redistributions of source code must retain the above copyright
   41  *    notice, this list of conditions and the following disclaimer.
   42  * 2. Redistributions in binary form must reproduce the above copyright
   43  *    notice, this list of conditions and the following disclaimer in the
   44  *    documentation and/or other materials provided with the distribution.
   45  * 3. All advertising materials mentioning features or use of this software
   46  *    must display the following acknowledgement:
   47  *      This product includes software developed by the University of
   48  *      California, Berkeley and its contributors.
   49  * 4. Neither the name of the University nor the names of its contributors
   50  *    may be used to endorse or promote products derived from this software
   51  *    without specific prior written permission.
   52  *
   53  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   63  * SUCH DAMAGE.
   64  *
   65  *      @(#)in_proto.c  8.1 (Berkeley) 6/10/93
   66  */
   67 
   68 
   69 #include <sys/param.h>
   70 #include <sys/socket.h>
   71 #include <sys/socketvar.h>
   72 #include <sys/protosw.h>
   73 #include <sys/kernel.h>
   74 #include <sys/domain.h>
   75 #include <sys/mbuf.h>
   76 #include <sys/systm.h>
   77 #include <sys/sysctl.h>
   78 
   79 #include <net/if.h>
   80 #include <net/radix.h>
   81 #include <net/route.h>
   82 
   83 #include <netinet/in.h>
   84 #include <netinet/in_systm.h>
   85 #include <netinet/in_var.h>
   86 #include <netinet/ip_encap.h>
   87 #include <netinet/ip.h>
   88 #include <netinet/ip_var.h>
   89 #include <netinet/ip6.h>
   90 #include <netinet6/ip6_var.h>
   91 #include <netinet/icmp6.h>
   92 
   93 #include <netinet/tcp.h>
   94 #include <netinet/tcp_timer.h>
   95 #include <netinet/tcp_var.h>
   96 #include <netinet/udp.h>
   97 #include <netinet/udp_var.h>
   98 #include <netinet6/tcp6_var.h>
   99 #include <netinet6/raw_ip6.h>
  100 #include <netinet6/udp6_var.h>
  101 #include <netinet6/pim6_var.h>
  102 #include <netinet6/nd6.h>
  103 #include <netinet6/in6_prefix.h>
  104 
  105 #if IPSEC
  106 #include <netinet6/ipsec.h>
  107 #if INET6
  108 #include <netinet6/ipsec6.h>
  109 #endif
  110 #include <netinet6/ah.h>
  111 #if INET6
  112 #include <netinet6/ah6.h>
  113 #endif
  114 #if IPSEC_ESP
  115 #include <netinet6/esp.h>
  116 #if INET6
  117 #include <netinet6/esp6.h>
  118 #endif
  119 #endif
  120 #include <netinet6/ipcomp.h>
  121 #if INET6
  122 #include <netinet6/ipcomp6.h>
  123 #endif
  124 #endif /*IPSEC*/
  125 
  126 #include <netinet6/ip6protosw.h>
  127 
  128 #include <net/net_osdep.h>
  129 
  130 /*
  131  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
  132  */
  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 extern struct domain inet6domain;
  141 extern int in6_inithead __P((void **, int));
  142 void in6_dinit(void);
  143 
  144 static int rip6_pr_output(struct mbuf *m, struct socket *so, struct sockaddr_in6 *, struct mbuf *);
  145 
  146 struct ip6protosw inet6sw[] = {
  147 { 0,            &inet6domain,   IPPROTO_IPV6,   0,
  148   0,            0,              0,              0,
  149   0,
  150   ip6_init,     0,              frag6_slowtimo, frag6_drain,
  151   0, &nousrreqs
  152 },
  153 { SOCK_DGRAM,   &inet6domain,   IPPROTO_UDP,    PR_ATOMIC|PR_ADDR,
  154   udp6_input,   0,              udp6_ctlinput,  ip6_ctloutput,
  155   0,
  156   0,            0,              0,              0,
  157   0, &udp6_usrreqs
  158 },
  159 { SOCK_STREAM,  &inet6domain,   IPPROTO_TCP,    PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
  160   tcp6_input,   0,              tcp6_ctlinput,  tcp_ctloutput,
  161   0,
  162 #if INET        /* don't call initialization and timeout routines twice */
  163   0,            0,              0,              tcp_drain,
  164 #else
  165   tcp_init,     tcp_fasttimo,   tcp_slowtimo,   tcp_drain,
  166 #endif
  167   0, &tcp6_usrreqs,
  168 },
  169 { SOCK_RAW,     &inet6domain,   IPPROTO_RAW,    PR_ATOMIC|PR_ADDR,
  170   rip6_input,   rip6_pr_output, rip6_ctlinput,  rip6_ctloutput,
  171   0,
  172   0,            0,              0,              0,
  173   0, &rip6_usrreqs
  174 },
  175 { SOCK_RAW,     &inet6domain,   IPPROTO_ICMPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  176   icmp6_input,  rip6_pr_output, rip6_ctlinput,  rip6_ctloutput,
  177   0,
  178   icmp6_init,   icmp6_fasttimo, 0,              0,
  179   0, &rip6_usrreqs
  180 },
  181 { SOCK_RAW,     &inet6domain,   IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR,
  182   dest6_input,  0,              0,              0,
  183   0,    
  184   0,            0,              0,              0,
  185   0, &nousrreqs
  186 },
  187 { SOCK_RAW,     &inet6domain,   IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR,
  188   route6_input, 0,              0,              0,
  189   0,    
  190   0,            0,              0,              0,
  191   0, &nousrreqs
  192 },
  193 { SOCK_RAW,     &inet6domain,   IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR,
  194   frag6_input,  0,              0,              0,
  195   0,    
  196   0,            0,              0,              0,
  197   0, &nousrreqs
  198 },
  199 #if IPSEC
  200 { SOCK_RAW,     &inet6domain,   IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  201   ah6_input,    0,              0,              0,
  202   0,      
  203   0,            0,              0,              0,
  204   0, &nousrreqs
  205 },
  206 #if IPSEC_ESP
  207 { SOCK_RAW,     &inet6domain,   IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  208   esp6_input,   0,
  209   esp6_ctlinput,
  210   0,
  211   0,
  212   0,            0,              0,              0,
  213   0, &nousrreqs
  214 },
  215 #endif
  216 { SOCK_RAW,     &inet6domain,   IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  217   ipcomp6_input, 0,             0,              0,
  218   0,      
  219   0,            0,              0,              0,
  220   0, &nousrreqs
  221 },
  222 #endif /* IPSEC */
  223 #if INET
  224 { SOCK_RAW,     &inet6domain,   IPPROTO_IPV4,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  225   encap6_input, rip6_pr_output,         0,              rip6_ctloutput,
  226   0,
  227   encap_init,   0,              0,              0,
  228   0, &rip6_usrreqs
  229 },
  230 #endif /*INET*/
  231 { SOCK_RAW,     &inet6domain,   IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  232   encap6_input, rip6_pr_output, 0,              rip6_ctloutput,
  233   0,
  234   encap_init,   0,              0,              0,
  235   0, &rip6_usrreqs
  236 },
  237 { SOCK_RAW,     &inet6domain,   IPPROTO_PIM,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  238   pim6_input,   rip6_pr_output, 0,              rip6_ctloutput,
  239   0,
  240   0,            0,              0,              0,
  241   0, &rip6_usrreqs
  242 },
  243 /* raw wildcard */
  244 { SOCK_RAW,     &inet6domain,   0,              PR_ATOMIC|PR_ADDR,
  245   rip6_input,   rip6_pr_output, 0,              rip6_ctloutput,
  246   0,
  247   0,            0,              0,              0,
  248   0, &rip6_usrreqs
  249 },
  250 };
  251 
  252 
  253 int in6_proto_count = (sizeof (inet6sw) / sizeof (struct ip6protosw));
  254 
  255 struct domain inet6domain =
  256     { AF_INET6, "internet6", in6_dinit, 0, 0, 
  257       (struct protosw *)inet6sw, 0,
  258       in6_inithead, offsetof(struct sockaddr_in6, sin6_addr) << 3, sizeof(struct sockaddr_in6) ,
  259       sizeof(struct sockaddr_in6), 0
  260     };
  261 
  262 DOMAIN_SET(inet6);
  263 
  264 /* Initialize the PF_INET6 domain, and add in the pre-defined protos */
  265 void
  266 in6_dinit()
  267 {
  268         register int i; 
  269         register struct ip6protosw *pr;
  270         register struct domain *dp;
  271         static inet6domain_initted = 0;
  272 
  273         if (!inet6domain_initted) {
  274                 dp = &inet6domain; 
  275 
  276                 for (i=0, pr = &inet6sw[0]; i<in6_proto_count; i++, pr++)
  277                         net_add_proto((struct protosw*)pr, dp);
  278 
  279                 inet6domain_initted = 1;
  280         }
  281 }
  282 
  283 int rip6_pr_output(struct mbuf *m, struct socket *so, struct sockaddr_in6 *sin6, struct mbuf *m1)
  284 {
  285         panic("rip6_pr_output\n");
  286         return 0;
  287 }
  288 
  289 /*
  290  * Internet configuration info
  291  */
  292 #ifndef IPV6FORWARDING
  293 #if GATEWAY6
  294 #define IPV6FORWARDING  1       /* forward IP6 packets not for us */
  295 #else
  296 #define IPV6FORWARDING  0       /* don't forward IP6 packets not for us */
  297 #endif /* GATEWAY6 */
  298 #endif /* !IPV6FORWARDING */
  299 
  300 #ifndef IPV6_SENDREDIRECTS
  301 #define IPV6_SENDREDIRECTS      1
  302 #endif
  303 
  304 int     ip6_forwarding = IPV6FORWARDING;        /* act as router? */
  305 int     ip6_sendredirects = IPV6_SENDREDIRECTS;
  306 int     ip6_defhlim = IPV6_DEFHLIM;
  307 int     ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
  308 int     ip6_accept_rtadv = 0;   /* "IPV6FORWARDING ? 0 : 1" is dangerous */
  309 int     ip6_maxfragpackets;     /* initialized in frag6.c:frag6_init() */
  310 int     ip6_log_interval = 5;
  311 int     ip6_hdrnestlimit = 50;  /* appropriate? */
  312 int     ip6_dad_count = 1;      /* DupAddrDetectionTransmits */
  313 u_int32_t ip6_flow_seq;
  314 int     ip6_auto_flowlabel = 1;
  315 int     ip6_gif_hlim = 0;
  316 int     ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */
  317 int     ip6_rr_prune = 5;       /* router renumbering prefix
  318                                  * walk list every 5 sec.    */
  319 int     ip6_v6only = 0;         /* Mapped addresses on by default -  Radar 3347718 */
  320 
  321 u_int32_t ip6_id = 0UL;
  322 int     ip6_keepfaith = 0;
  323 time_t  ip6_log_time = (time_t)0L;
  324 
  325 /* icmp6 */
  326 /*
  327  * BSDI4 defines these variables in in_proto.c...
  328  * XXX: what if we don't define INET? Should we define pmtu6_expire
  329  * or so? (jinmei@kame.net 19990310)
  330  */
  331 int pmtu_expire = 60*10;
  332 int pmtu_probe = 60*2;
  333 
  334 /* raw IP6 parameters */
  335 /*
  336  * Nominal space allocated to a raw ip socket.
  337  */
  338 #define RIPV6SNDQ       8192
  339 #define RIPV6RCVQ       8192
  340 
  341 u_long  rip6_sendspace = RIPV6SNDQ;
  342 u_long  rip6_recvspace = RIPV6RCVQ;
  343 
  344 /* ICMPV6 parameters */
  345 int     icmp6_rediraccept = 1;          /* accept and process redirects */
  346 int     icmp6_redirtimeout = 10 * 60;   /* 10 minutes */
  347 int     icmp6errppslim = 100;           /* 100pps */
  348 int     icmp6_nodeinfo = 3;             /* enable/disable NI response */
  349 
  350 /* UDP on IP6 parameters */
  351 int     udp6_sendspace = 9216;          /* really max datagram size */
  352 int     udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6));
  353                                         /* 40 1K datagrams */
  354 
  355 /*
  356  * sysctl related items.
  357  */
  358 SYSCTL_NODE(_net,       PF_INET6,       inet6,  CTLFLAG_RW,     0,
  359         "Internet6 Family");
  360 
  361 /* net.inet6 */
  362 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6,   ip6,    CTLFLAG_RW, 0,  "IP6");
  363 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6,  CTLFLAG_RW, 0,  "ICMP6");
  364 SYSCTL_NODE(_net_inet6, IPPROTO_UDP,    udp6,   CTLFLAG_RW, 0,  "UDP6");
  365 SYSCTL_NODE(_net_inet6, IPPROTO_TCP,    tcp6,   CTLFLAG_RW, 0,  "TCP6");
  366 #if IPSEC
  367 SYSCTL_NODE(_net_inet6, IPPROTO_ESP,    ipsec6, CTLFLAG_RW, 0,  "IPSEC6");
  368 #endif /* IPSEC */
  369 
  370 /* net.inet6.ip6 */
  371 static int
  372 sysctl_ip6_temppltime SYSCTL_HANDLER_ARGS
  373 {
  374         int error = 0;
  375         int old;
  376 
  377         error = SYSCTL_OUT(req, arg1, sizeof(int));
  378         if (error || !req->newptr)
  379                 return (error);
  380         old = ip6_temp_preferred_lifetime;
  381         error = SYSCTL_IN(req, arg1, sizeof(int));
  382         if (ip6_temp_preferred_lifetime <
  383             ip6_desync_factor + ip6_temp_regen_advance) {
  384                 ip6_temp_preferred_lifetime = old;
  385                 return(EINVAL);
  386         }
  387         return(error);
  388 }
  389 
  390 static int
  391 sysctl_ip6_tempvltime SYSCTL_HANDLER_ARGS
  392 {
  393         int error = 0;
  394         int old;
  395 
  396         error = SYSCTL_OUT(req, arg1, sizeof(int));
  397         if (error || !req->newptr)
  398                 return (error);
  399         old = ip6_temp_valid_lifetime;
  400         error = SYSCTL_IN(req, arg1, sizeof(int));
  401         if (ip6_temp_valid_lifetime < ip6_temp_preferred_lifetime) {
  402                 ip6_temp_preferred_lifetime = old;
  403                 return(EINVAL);
  404         }
  405         return(error);
  406 }
  407 
  408 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING,
  409         forwarding, CTLFLAG_RW,         &ip6_forwarding,        0, "");
  410 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS,
  411         redirect, CTLFLAG_RW,           &ip6_sendredirects,     0, "");
  412 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM,
  413         hlim, CTLFLAG_RW,               &ip6_defhlim,   0, "");
  414 SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_STATS, stats, CTLFLAG_RD,
  415         &ip6stat, ip6stat, "");
  416 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS,
  417         maxfragpackets, CTLFLAG_RW,     &ip6_maxfragpackets,    0, "");
  418 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV,
  419         accept_rtadv, CTLFLAG_RW,       &ip6_accept_rtadv,      0, "");
  420 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH,
  421         keepfaith, CTLFLAG_RW,          &ip6_keepfaith, 0, "");
  422 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL,
  423         log_interval, CTLFLAG_RW,       &ip6_log_interval,      0, "");
  424 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT,
  425         hdrnestlimit, CTLFLAG_RW,       &ip6_hdrnestlimit,      0, "");
  426 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT,
  427         dad_count, CTLFLAG_RW,  &ip6_dad_count, 0, "");
  428 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL,
  429         auto_flowlabel, CTLFLAG_RW,     &ip6_auto_flowlabel,    0, "");
  430 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM,
  431         defmcasthlim, CTLFLAG_RW,       &ip6_defmcasthlim,      0, "");
  432 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM,
  433         gifhlim, CTLFLAG_RW,    &ip6_gif_hlim,                  0, "");
  434 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION,
  435         kame_version, CTLFLAG_RD,       __KAME_VERSION,         0, "");
  436 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED,
  437         use_deprecated, CTLFLAG_RW,     &ip6_use_deprecated,    0, "");
  438 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE,
  439         rr_prune, CTLFLAG_RW,   &ip6_rr_prune,                  0, "");
  440 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR,
  441         use_tempaddr, CTLFLAG_RW, &ip6_use_tempaddr,            0, "");
  442 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
  443            CTLTYPE_INT|CTLFLAG_RW, &ip6_temp_preferred_lifetime, 0,
  444            sysctl_ip6_temppltime, "I", "");
  445 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
  446            CTLTYPE_INT|CTLFLAG_RW, &ip6_temp_valid_lifetime, 0,
  447            sysctl_ip6_tempvltime, "I", "");
  448 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY,
  449         v6only, CTLFLAG_RW,     &ip6_v6only,                    0, "");
  450 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL,
  451         auto_linklocal, CTLFLAG_RW, &ip6_auto_linklocal,        0, "");
  452 SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, CTLFLAG_RD,
  453         &rip6stat, rip6stat, "");
  454 
  455 /* net.inet6.icmp6 */
  456 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT,
  457         rediraccept, CTLFLAG_RW,        &icmp6_rediraccept,     0, "");
  458 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT,
  459         redirtimeout, CTLFLAG_RW,       &icmp6_redirtimeout,    0, "");
  460 SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD,
  461         &icmp6stat, icmp6stat, "");
  462 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE,
  463         nd6_prune, CTLFLAG_RW,          &nd6_prune,     0, "");
  464 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY,
  465         nd6_delay, CTLFLAG_RW,          &nd6_delay,     0, "");
  466 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES,
  467         nd6_umaxtries, CTLFLAG_RW,      &nd6_umaxtries, 0, "");
  468 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES,
  469         nd6_mmaxtries, CTLFLAG_RW,      &nd6_mmaxtries, 0, "");
  470 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK,
  471         nd6_useloopback, CTLFLAG_RW,    &nd6_useloopback, 0, "");
  472 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO,
  473         nodeinfo, CTLFLAG_RW,   &icmp6_nodeinfo,        0, "");
  474 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT,
  475         errppslimit, CTLFLAG_RW,        &icmp6errppslim,        0, "");
  476 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT,
  477         nd6_maxnudhint, CTLFLAG_RW,     &nd6_maxnudhint, 0, "");
  478 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG,
  479         nd6_debug, CTLFLAG_RW,  &nd6_debug,             0, "");
  480 

Cache object: 8b4d04f5d69715c20ee18ec134ecd84b


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