1 /* $FreeBSD: src/sys/netinet6/in6_proto.c,v 1.6.2.9 2003/01/24 05:11:35 sam Exp $ */
2 /* $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $ */
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
34 * Copyright (c) 1982, 1986, 1993
35 * The Regents of the University of California. All rights reserved.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * @(#)in_proto.c 8.1 (Berkeley) 6/10/93
65 #include "opt_inet6.h"
66 #include "opt_ipsec.h"
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>
76 #include <sys/systm.h>
77 #include <sys/sysctl.h>
80 #include <net/radix.h>
81 #include <net/route.h>
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>
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>
105 #include <netinet6/ipsec.h>
107 #include <netinet6/ipsec6.h>
109 #include <netinet6/ah.h>
111 #include <netinet6/ah6.h>
114 #include <netinet6/esp.h>
116 #include <netinet6/esp6.h>
119 #include <netinet6/ipcomp.h>
121 #include <netinet6/ipcomp6.h>
126 #include <netproto/ipsec/ipsec6.h>
129 #define ah6_input ipsec6_common_input
130 #define esp6_input ipsec6_common_input
131 #define ipcomp6_input ipsec6_common_input
132 #endif /* FAST_IPSEC */
134 #include <netinet6/ip6protosw.h>
136 #include <net/net_osdep.h>
139 #include <netinet/ip_carp.h>
144 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
147 extern struct domain inet6domain
;
148 static struct pr_usrreqs nousrreqs
;
151 #define PR_ABRTACPTDIS 0
153 struct protosw inet6sw
[] = {
156 .pr_domain
= &inet6domain
,
157 .pr_protocol
= IPPROTO_IPV6
,
162 .pr_slowtimo
= frag6_slowtimo
,
163 .pr_drain
= frag6_drain
,
164 .pr_usrreqs
= &nousrreqs
167 .pr_type
= SOCK_DGRAM
,
168 .pr_domain
= &inet6domain
,
169 .pr_protocol
= IPPROTO_UDP
,
170 .pr_flags
= PR_ATOMIC
| PR_ADDR
| PR_MPSAFE
| PR_LASTHDR
,
172 .pr_input
= udp6_input
,
174 .pr_ctlinput
= udp6_ctlinput
,
175 .pr_ctloutput
= ip6_ctloutput_dispatch
,
177 .pr_ctlport
= cpu0_ctlport
,
178 .pr_usrreqs
= &udp6_usrreqs
181 .pr_type
= SOCK_STREAM
,
182 .pr_domain
= &inet6domain
,
183 .pr_protocol
= IPPROTO_TCP
,
184 .pr_flags
= PR_CONNREQUIRED
| PR_WANTRCVD
| PR_LISTEN
|
185 PR_MPSAFE
| PR_LASTHDR
| PR_ASYNC_SEND
| PR_ASYNC_RCVD
,
187 .pr_input
= tcp6_input
,
189 .pr_ctlinput
= tcp6_ctlinput
,
190 .pr_ctloutput
= tcp_ctloutput
,
192 .pr_ctlport
= cpu0_ctlport
,
194 /* don't call initialization and timeout routines twice */
198 .pr_drain
= tcp_drain
,
199 .pr_usrreqs
= &tcp6_usrreqs
203 .pr_domain
= &inet6domain
,
204 .pr_protocol
= IPPROTO_RAW
,
205 .pr_flags
= PR_ATOMIC
|PR_ADDR
|PR_LASTHDR
,
207 .pr_input
= rip6_input
,
208 .pr_output
= rip6_output
,
209 .pr_ctlinput
= rip6_ctlinput
,
210 .pr_ctloutput
= rip6_ctloutput
,
212 .pr_ctlport
= cpu0_ctlport
,
213 .pr_usrreqs
= &rip6_usrreqs
217 .pr_domain
= &inet6domain
,
218 .pr_protocol
= IPPROTO_ICMPV6
,
219 .pr_flags
= PR_ATOMIC
|PR_ADDR
|PR_LASTHDR
,
221 .pr_input
= icmp6_input
,
222 .pr_output
= rip6_output
,
223 .pr_ctlinput
= rip6_ctlinput
,
224 .pr_ctloutput
= rip6_ctloutput
,
226 .pr_ctlport
= cpu0_ctlport
,
227 .pr_init
= icmp6_init
,
228 .pr_fasttimo
= icmp6_fasttimo
,
232 .pr_usrreqs
= &rip6_usrreqs
236 .pr_domain
= &inet6domain
,
237 .pr_protocol
= IPPROTO_DSTOPTS
, PR_ATOMIC
|PR_ADDR
,
239 .pr_input
= dest6_input
,
242 .pr_ctloutput
= NULL
,
244 .pr_usrreqs
= &nousrreqs
248 .pr_domain
= &inet6domain
,
249 .pr_protocol
= IPPROTO_ROUTING
, PR_ATOMIC
|PR_ADDR
,
251 .pr_input
= route6_input
,
254 .pr_ctloutput
= NULL
,
256 .pr_usrreqs
= &nousrreqs
260 .pr_domain
= &inet6domain
,
261 .pr_protocol
= IPPROTO_FRAGMENT
, PR_ATOMIC
|PR_ADDR
,
263 .pr_input
= frag6_input
,
266 .pr_ctloutput
= NULL
,
268 .pr_usrreqs
= &nousrreqs
273 .pr_domain
= &inet6domain
,
274 .pr_protocol
= IPPROTO_AH
,
275 .pr_flags
= PR_ATOMIC
|PR_ADDR
,
277 .pr_input
= ah6_input
,
280 .pr_ctloutput
= NULL
,
282 .pr_usrreqs
= &nousrreqs
287 .pr_domain
= &inet6domain
,
288 .pr_protocol
= IPPROTO_ESP
,
289 .pr_flags
= PR_ATOMIC
|PR_ADDR
,
291 .pr_input
= esp6_input
,
293 .pr_ctlinput
= esp6_ctlinput
,
294 .pr_ctloutput
= NULL
,
296 .pr_usrreqs
= &nousrreqs
301 .pr_domain
= &inet6domain
,
302 .pr_protocol
= IPPROTO_IPCOMP
,
303 .pr_flags
= PR_ATOMIC
|PR_ADDR
,
305 .pr_input
= ipcomp6_input
,
308 .pr_ctloutput
= NULL
,
310 .pr_usrreqs
= &nousrreqs
316 .pr_domain
= &inet6domain
,
317 .pr_protocol
= IPPROTO_IPV4
,
318 .pr_flags
= PR_ATOMIC
|PR_ADDR
|PR_LASTHDR
,
320 .pr_input
= encap6_input
,
321 .pr_output
= rip6_output
,
323 .pr_ctloutput
= rip6_ctloutput
,
325 .pr_init
= encap_init
,
326 .pr_usrreqs
= &rip6_usrreqs
331 .pr_domain
= &inet6domain
,
332 .pr_protocol
= IPPROTO_IPV6
,
333 .pr_flags
= PR_ATOMIC
|PR_ADDR
|PR_LASTHDR
,
335 .pr_input
= encap6_input
,
336 .pr_output
= rip6_output
,
338 .pr_ctloutput
= rip6_ctloutput
,
340 .pr_init
= encap_init
,
341 .pr_usrreqs
= &rip6_usrreqs
345 .pr_domain
= &inet6domain
,
346 .pr_protocol
= IPPROTO_PIM
,
347 .pr_flags
= PR_ATOMIC
|PR_ADDR
|PR_LASTHDR
,
349 .pr_input
= pim6_input
,
350 .pr_output
= rip6_output
,
352 .pr_ctloutput
= rip6_ctloutput
,
354 .pr_usrreqs
= &rip6_usrreqs
359 .pr_domain
= &inet6domain
,
360 .pr_protocol
= IPPROTO_CARP
,
361 .pr_flags
= PR_ATOMIC
|PR_ADDR
,
363 .pr_input
= carp6_proto_input
,
364 .pr_output
= rip6_output
,
366 .pr_ctloutput
= rip6_ctloutput
,
368 .pr_usrreqs
= &rip6_usrreqs
375 .pr_domain
= &inet6domain
,
377 .pr_flags
= PR_ATOMIC
|PR_ADDR
,
379 .pr_input
= rip6_input
,
380 .pr_output
= rip6_output
,
382 .pr_ctloutput
= rip6_ctloutput
,
384 .pr_usrreqs
= &rip6_usrreqs
388 extern int in6_inithead (void **, int);
390 struct domain inet6domain
= {
391 .dom_family
= AF_INET6
,
392 .dom_name
= "internet6",
394 .dom_externalize
= NULL
,
396 .dom_protosw
= inet6sw
,
397 .dom_protoswNPROTOSW
= &inet6sw
[NELEM(inet6sw
)],
398 .dom_next
= SLIST_ENTRY_INITIALIZER
,
399 .dom_rtattach
= in6_inithead
,
400 .dom_rtoffset
= offsetof(struct sockaddr_in6
, sin6_addr
) << 3,
401 .dom_maxrtkey
= sizeof(struct sockaddr_in6
),
402 .dom_ifattach
= in6_domifattach
,
403 .dom_ifdetach
= in6_domifdetach
409 * Internet configuration info
411 #ifndef IPV6FORWARDING
413 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */
415 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */
416 #endif /* GATEWAY6 */
417 #endif /* !IPV6FORWARDING */
419 #ifndef IPV6_SENDREDIRECTS
420 #define IPV6_SENDREDIRECTS 1
423 int nd6_onlink_ns_rfc4861
= 0; /* allow 'on-link' NS/NA (as in RFC 4861) */
425 int ip6_forwarding
= IPV6FORWARDING
; /* act as router? */
426 int ip6_sendredirects
= IPV6_SENDREDIRECTS
;
427 int ip6_defhlim
= IPV6_DEFHLIM
;
428 int ip6_minhlim
= IPV6_MINHLIM
;
429 int ip6_defmcasthlim
= IPV6_DEFAULT_MULTICAST_HOPS
;
430 int ip6_accept_rtadv
= 0; /* "IPV6FORWARDING ? 0 : 1" is dangerous */
431 int ip6_maxfragpackets
; /* initialized in frag6.c:frag6_init() */
432 int ip6_maxfrags
; /* initialized in frag6.c:frag6_init() */
433 int ip6_log_interval
= 5;
434 int ip6_hdrnestlimit
= 50; /* appropriate? */
435 int ip6_dad_count
= 1; /* DupAddrDetectionTransmits */
436 u_int32_t ip6_flow_seq
;
437 int ip6_auto_flowlabel
= 1;
438 int ip6_gif_hlim
= 0;
439 int ip6_use_deprecated
= 1; /* allow deprecated addr (RFC2462 5.5.4) */
440 int ip6_rr_prune
= 5; /* router renumbering prefix
441 * walk list every 5 sec. */
443 u_int32_t ip6_id
= 0UL;
444 int ip6_keepfaith
= 0;
445 time_t ip6_log_time
= (time_t)0L;
449 * BSDI4 defines these variables in in_proto.c...
450 * XXX: what if we don't define INET? Should we define pmtu6_expire
451 * or so? (jinmei@kame.net 19990310)
453 int pmtu_expire
= 60*10;
454 int pmtu_probe
= 60*2;
456 /* raw IP6 parameters */
458 * Nominal space allocated to a raw ip socket.
460 #define RIPV6SNDQ 8192
461 #define RIPV6RCVQ 8192
463 u_long rip6_sendspace
= RIPV6SNDQ
;
464 u_long rip6_recvspace
= RIPV6RCVQ
;
466 /* ICMPV6 parameters */
467 int icmp6_rediraccept
= 1; /* accept and process redirects */
468 int icmp6_redirtimeout
= 10 * 60; /* 10 minutes */
469 int icmp6errppslim
= 100; /* 100pps */
470 int icmp6_nodeinfo
= 3; /* enable/disable NI response */
472 /* UDP on IP6 parameters */
473 int udp6_sendspace
= 9216; /* really max datagram size */
474 int udp6_recvspace
= 40 * (1024 + sizeof(struct sockaddr_in6
));
475 /* 40 1K datagrams */
478 * sysctl related items.
480 SYSCTL_NODE(_net
, PF_INET6
, inet6
, CTLFLAG_RW
, 0,
484 SYSCTL_NODE(_net_inet6
, IPPROTO_IPV6
, ip6
, CTLFLAG_RW
, 0, "IP6");
485 SYSCTL_NODE(_net_inet6
, IPPROTO_ICMPV6
, icmp6
, CTLFLAG_RW
, 0, "ICMP6");
486 SYSCTL_NODE(_net_inet6
, IPPROTO_UDP
, udp6
, CTLFLAG_RW
, 0, "UDP6");
487 SYSCTL_NODE(_net_inet6
, IPPROTO_TCP
, tcp6
, CTLFLAG_RW
, 0, "TCP6");
489 SYSCTL_NODE(_net_inet6
, IPPROTO_ESP
, ipsec6
, CTLFLAG_RW
, 0, "IPSEC6");
494 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS
)
499 error
= SYSCTL_OUT(req
, arg1
, sizeof(int));
500 if (error
|| !req
->newptr
)
502 old
= ip6_temp_preferred_lifetime
;
503 error
= SYSCTL_IN(req
, arg1
, sizeof(int));
504 if (ip6_temp_preferred_lifetime
<
505 ip6_desync_factor
+ ip6_temp_regen_advance
) {
506 ip6_temp_preferred_lifetime
= old
;
513 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS
)
518 error
= SYSCTL_OUT(req
, arg1
, sizeof(int));
519 if (error
|| !req
->newptr
)
521 old
= ip6_temp_valid_lifetime
;
522 error
= SYSCTL_IN(req
, arg1
, sizeof(int));
523 if (ip6_temp_valid_lifetime
< ip6_temp_preferred_lifetime
) {
524 ip6_temp_preferred_lifetime
= old
;
530 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_FORWARDING
, forwarding
, CTLFLAG_RW
,
531 &ip6_forwarding
, 0, "Enable IP forwarding between interfaces");
532 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_SENDREDIRECTS
, redirect
, CTLFLAG_RW
,
533 &ip6_sendredirects
, 0, "Enable sending IP redirects");
534 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_DEFHLIM
,
535 hlim
, CTLFLAG_RW
, &ip6_defhlim
, 0, "Default hop limit");
536 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_MINHLIM
,
537 minhlim
, CTLFLAG_RW
, &ip6_minhlim
, 0, "Default hop limit");
538 SYSCTL_STRUCT(_net_inet6_ip6
, IPV6CTL_STATS
, stats
, CTLFLAG_RD
,
539 &ip6stat
, ip6stat
, "IP stats");
540 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_MAXFRAGPACKETS
, maxfragpackets
,
541 CTLFLAG_RW
, &ip6_maxfragpackets
, 0, "Maximum packets in reassembly queue");
542 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_ACCEPT_RTADV
, accept_rtadv
,
543 CTLFLAG_RW
, &ip6_accept_rtadv
, 0, "Acts as a host not a router");
544 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_KEEPFAITH
,
545 keepfaith
, CTLFLAG_RW
, &ip6_keepfaith
, 0,
546 "Enable packet capture for FAITH IPv4->IPv6 translator daemon");
547 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_LOG_INTERVAL
,
548 log_interval
, CTLFLAG_RW
, &ip6_log_interval
, 0, "");
549 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_HDRNESTLIMIT
, hdrnestlimit
, CTLFLAG_RW
,
550 &ip6_hdrnestlimit
, 0, "Upper limit of # of extension headers");
551 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_DAD_COUNT
, dad_count
, CTLFLAG_RW
,
552 &ip6_dad_count
, 0, "Number of times to perform duplicate address detectione");
553 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_AUTO_FLOWLABEL
, auto_flowlabel
, CTLFLAG_RW
,
554 &ip6_auto_flowlabel
, 0, "Enable attaching flowlabel automatically");
555 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_DEFMCASTHLIM
, defmcasthlim
, CTLFLAG_RW
,
556 &ip6_defmcasthlim
, 0, "Default multicast hop limit");
557 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_GIF_HLIM
, gifhlim
, CTLFLAG_RW
,
558 &ip6_gif_hlim
, 0, "Hop limit for gif encap packet");
559 SYSCTL_STRING(_net_inet6_ip6
, IPV6CTL_KAME_VERSION
,
560 kame_version
, CTLFLAG_RD
, __KAME_VERSION
, 0, "Kame version");
561 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_USE_DEPRECATED
, use_deprecated
, CTLFLAG_RW
,
562 &ip6_use_deprecated
, 0, "Allow deprecated addr as source");
563 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_RR_PRUNE
,
564 rr_prune
, CTLFLAG_RW
, &ip6_rr_prune
, 0,
565 "Walk timer for router renumbering");
566 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_USETEMPADDR
, use_tempaddr
, CTLFLAG_RW
,
567 &ip6_use_tempaddr
, 0, "Whether to use temporary addresses");
568 SYSCTL_OID(_net_inet6_ip6
, IPV6CTL_TEMPPLTIME
, temppltime
,
569 CTLTYPE_INT
|CTLFLAG_RW
, &ip6_temp_preferred_lifetime
, 0,
570 sysctl_ip6_temppltime
, "I",
571 "Preferred lifetime for tmpaddrs");
572 SYSCTL_OID(_net_inet6_ip6
, IPV6CTL_TEMPVLTIME
, tempvltime
,
573 CTLTYPE_INT
|CTLFLAG_RW
, &ip6_temp_valid_lifetime
, 0,
574 sysctl_ip6_tempvltime
, "I",
575 "Valid lifetime for tmpaddrs");
576 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_AUTO_LINKLOCAL
, auto_linklocal
, CTLFLAG_RW
,
577 &ip6_auto_linklocal
, 0, "Enable auto-assigning a link-local address");
578 SYSCTL_STRUCT(_net_inet6_ip6
, IPV6CTL_RIP6STATS
, rip6stats
, CTLFLAG_RD
,
579 &rip6stat
, rip6stat
, "Raw stats");
580 SYSCTL_INT(_net_inet6_ip6
, IPV6CTL_MAXFRAGS
, maxfrags
, CTLFLAG_RW
,
581 &ip6_maxfrags
, 0, "Maximum fragments in reassembly queues");
583 /* net.inet6.icmp6 */
584 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_REDIRACCEPT
, rediraccept
, CTLFLAG_RW
,
585 &icmp6_rediraccept
, 0, "If enabled, accept and process redirects");
586 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_REDIRTIMEOUT
, redirtimeout
, CTLFLAG_RW
,
587 &icmp6_redirtimeout
, 0, "Cache time for redirect routes");
588 SYSCTL_STRUCT(_net_inet6_icmp6
, ICMPV6CTL_STATS
, stats
, CTLFLAG_RD
,
589 &icmp6stat
, icmp6stat
, "Stats");
590 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ND6_PRUNE
, nd6_prune
, CTLFLAG_RW
,
591 &nd6_prune
, 0, "Prune interval");
592 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ND6_DELAY
, nd6_delay
, CTLFLAG_RW
,
593 &nd6_delay
, 0, "Reachability timeout for stale neighbors");
594 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ND6_UMAXTRIES
, nd6_umaxtries
, CTLFLAG_RW
,
595 &nd6_umaxtries
, 0, "Maximum unicast query");
596 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ND6_MMAXTRIES
, nd6_mmaxtries
, CTLFLAG_RW
,
597 &nd6_mmaxtries
, 0, "Maximum multicast query");
598 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ND6_USELOOPBACK
, nd6_useloopback
, CTLFLAG_RW
,
599 &nd6_useloopback
, 0, "Use loopback interface for local traffic");
600 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_NODEINFO
,
601 nodeinfo
, CTLFLAG_RW
, &icmp6_nodeinfo
, 0, "Enable/disable NI response");
602 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ERRPPSLIMIT
,
603 errppslimit
, CTLFLAG_RW
, &icmp6errppslim
, 0,
604 "ICMPv6 error maximum packet-per-second value (default: 100pps)");
605 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ND6_MAXNUDHINT
, nd6_maxnudhint
, CTLFLAG_RW
,
606 &nd6_maxnudhint
, 0, "Max # of subsequent upper layer hints");
607 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ND6_DEBUG
, nd6_debug
, CTLFLAG_RW
,
608 &nd6_debug
, 0, "Enable debug output");
609 SYSCTL_INT(_net_inet6_icmp6
, ICMPV6CTL_ND6_ONLINKNSRFC4861
, nd6_onlink_ns_rfc4861
, CTLFLAG_RW
,
610 &nd6_onlink_ns_rfc4861
, 0, "Accept 'on-link' NS/NA in compliance with RFC 4861.");