xref: /freebsd/sys/netinet6/in6_proto.c (revision bb15ca603fa442c72dde3f3cb8b46db6970e3950)
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("$FreeBSD$");
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 #ifdef FLOWTABLE
130 #include <net/flowtable.h>
131 #endif
132 
133 /*
134  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
135  */
136 FEATURE(inet6, "Internet Protocol version 6");
137 
138 extern	struct domain inet6domain;
139 static	struct pr_usrreqs nousrreqs;
140 
141 #define PR_LISTEN	0
142 #define PR_ABRTACPTDIS	0
143 
144 /* Spacer for loadable protocols. */
145 #define IP6PROTOSPACER   			\
146 {						\
147 	.pr_domain =		&inet6domain,	\
148 	.pr_protocol =		PROTO_SPACER,	\
149 	.pr_usrreqs =		&nousrreqs	\
150 }
151 
152 struct ip6protosw inet6sw[] = {
153 {
154 	.pr_type =		0,
155 	.pr_domain =		&inet6domain,
156 	.pr_protocol =		IPPROTO_IPV6,
157 	.pr_init =		ip6_init,
158 #ifdef VIMAGE
159 	.pr_destroy =		ip6_destroy,
160 #endif
161 	.pr_slowtimo =		frag6_slowtimo,
162 	.pr_drain =		frag6_drain,
163 	.pr_usrreqs =		&nousrreqs,
164 },
165 {
166 	.pr_type =		SOCK_DGRAM,
167 	.pr_domain =		&inet6domain,
168 	.pr_protocol =		IPPROTO_UDP,
169 	.pr_flags =		PR_ATOMIC|PR_ADDR,
170 	.pr_input =		udp6_input,
171 	.pr_ctlinput =		udp6_ctlinput,
172 	.pr_ctloutput =		ip6_ctloutput,
173 #ifndef INET	/* Do not call initialization twice. */
174 	.pr_init =		udp_init,
175 #endif
176 	.pr_usrreqs =		&udp6_usrreqs,
177 },
178 {
179 	.pr_type =		SOCK_STREAM,
180 	.pr_domain =		&inet6domain,
181 	.pr_protocol =		IPPROTO_TCP,
182 	.pr_flags =		PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
183 	.pr_input =		tcp6_input,
184 	.pr_ctlinput =		tcp6_ctlinput,
185 	.pr_ctloutput =		tcp_ctloutput,
186 #ifndef INET	/* don't call initialization and timeout routines twice */
187 	.pr_init =		tcp_init,
188 	.pr_slowtimo =		tcp_slowtimo,
189 #endif
190 	.pr_drain =		tcp_drain,
191 	.pr_usrreqs =		&tcp6_usrreqs,
192 },
193 #ifdef SCTP
194 {
195 	.pr_type =		SOCK_SEQPACKET,
196 	.pr_domain =		&inet6domain,
197 	.pr_protocol =		IPPROTO_SCTP,
198 	.pr_flags =		PR_WANTRCVD,
199 	.pr_input =		sctp6_input,
200 	.pr_ctlinput =		sctp6_ctlinput,
201 	.pr_ctloutput =	sctp_ctloutput,
202 	.pr_drain =		sctp_drain,
203 #ifndef INET	/* Do not call initialization twice. */
204 	.pr_init =		sctp_init,
205 #endif
206 	.pr_usrreqs =		&sctp6_usrreqs
207 },
208 {
209 	.pr_type =		SOCK_STREAM,
210 	.pr_domain =		&inet6domain,
211 	.pr_protocol =		IPPROTO_SCTP,
212 	.pr_flags =		PR_WANTRCVD,
213 	.pr_input =		sctp6_input,
214 	.pr_ctlinput =	sctp6_ctlinput,
215 	.pr_ctloutput =		sctp_ctloutput,
216 	.pr_drain =		sctp_drain,
217 	.pr_usrreqs =		&sctp6_usrreqs
218 },
219 #endif /* SCTP */
220 {
221 	.pr_type =		SOCK_RAW,
222 	.pr_domain =		&inet6domain,
223 	.pr_protocol =		IPPROTO_RAW,
224 	.pr_flags =		PR_ATOMIC|PR_ADDR,
225 	.pr_input =		rip6_input,
226 	.pr_output =		rip6_output,
227 	.pr_ctlinput =		rip6_ctlinput,
228 	.pr_ctloutput =		rip6_ctloutput,
229 #ifndef INET	/* Do not call initialization twice. */
230 	.pr_init =		rip_init,
231 #endif
232 	.pr_usrreqs =		&rip6_usrreqs
233 },
234 {
235 	.pr_type =		SOCK_RAW,
236 	.pr_domain =		&inet6domain,
237 	.pr_protocol =		IPPROTO_ICMPV6,
238 	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
239 	.pr_input =		icmp6_input,
240 	.pr_output =		rip6_output,
241 	.pr_ctlinput =		rip6_ctlinput,
242 	.pr_ctloutput =		rip6_ctloutput,
243 	.pr_fasttimo =		icmp6_fasttimo,
244 	.pr_slowtimo =		icmp6_slowtimo,
245 	.pr_usrreqs =		&rip6_usrreqs
246 },
247 {
248 	.pr_type =		SOCK_RAW,
249 	.pr_domain =		&inet6domain,
250 	.pr_protocol =		IPPROTO_DSTOPTS,
251 	.pr_flags =		PR_ATOMIC|PR_ADDR,
252 	.pr_input =		dest6_input,
253 	.pr_usrreqs =		&nousrreqs
254 },
255 {
256 	.pr_type =		SOCK_RAW,
257 	.pr_domain =		&inet6domain,
258 	.pr_protocol =		IPPROTO_ROUTING,
259 	.pr_flags =		PR_ATOMIC|PR_ADDR,
260 	.pr_input =		route6_input,
261 	.pr_usrreqs =		&nousrreqs
262 },
263 {
264 	.pr_type =		SOCK_RAW,
265 	.pr_domain =		&inet6domain,
266 	.pr_protocol =		IPPROTO_FRAGMENT,
267 	.pr_flags =		PR_ATOMIC|PR_ADDR,
268 	.pr_input =		frag6_input,
269 	.pr_usrreqs =		&nousrreqs
270 },
271 #ifdef IPSEC
272 {
273 	.pr_type =		SOCK_RAW,
274 	.pr_domain =		&inet6domain,
275 	.pr_protocol =		IPPROTO_AH,
276 	.pr_flags =		PR_ATOMIC|PR_ADDR,
277 	.pr_input =		ipsec6_common_input,
278 	.pr_usrreqs =		&nousrreqs,
279 },
280 {
281 	.pr_type =		SOCK_RAW,
282 	.pr_domain =		&inet6domain,
283 	.pr_protocol =		IPPROTO_ESP,
284 	.pr_flags =		PR_ATOMIC|PR_ADDR,
285         .pr_input =		ipsec6_common_input,
286 	.pr_ctlinput =		esp6_ctlinput,
287 	.pr_usrreqs =		&nousrreqs,
288 },
289 {
290 	.pr_type =		SOCK_RAW,
291 	.pr_domain =		&inet6domain,
292 	.pr_protocol =		IPPROTO_IPCOMP,
293 	.pr_flags =		PR_ATOMIC|PR_ADDR,
294         .pr_input =		ipsec6_common_input,
295 	.pr_usrreqs =		&nousrreqs,
296 },
297 #endif /* IPSEC */
298 #ifdef INET
299 {
300 	.pr_type =		SOCK_RAW,
301 	.pr_domain =		&inet6domain,
302 	.pr_protocol =		IPPROTO_IPV4,
303 	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
304 	.pr_input =		encap6_input,
305 	.pr_output =		rip6_output,
306 	.pr_ctloutput =		rip6_ctloutput,
307 	.pr_init =		encap_init,
308 	.pr_usrreqs =		&rip6_usrreqs
309 },
310 #endif /* INET */
311 {
312 	.pr_type =		SOCK_RAW,
313 	.pr_domain =		&inet6domain,
314 	.pr_protocol =		IPPROTO_IPV6,
315 	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
316 	.pr_input =		encap6_input,
317 	.pr_output =		rip6_output,
318 	.pr_ctloutput =		rip6_ctloutput,
319 	.pr_init =		encap_init,
320 	.pr_usrreqs =		&rip6_usrreqs
321 },
322 {
323 	.pr_type =		SOCK_RAW,
324 	.pr_domain =		&inet6domain,
325 	.pr_protocol =		IPPROTO_PIM,
326 	.pr_flags =		PR_ATOMIC|PR_ADDR|PR_LASTHDR,
327 	.pr_input =		encap6_input,
328 	.pr_output =		rip6_output,
329 	.pr_ctloutput =		rip6_ctloutput,
330 	.pr_usrreqs =		&rip6_usrreqs
331 },
332 /* Spacer n-times for loadable protocols. */
333 IP6PROTOSPACER,
334 IP6PROTOSPACER,
335 IP6PROTOSPACER,
336 IP6PROTOSPACER,
337 IP6PROTOSPACER,
338 IP6PROTOSPACER,
339 IP6PROTOSPACER,
340 IP6PROTOSPACER,
341 /* raw wildcard */
342 {
343 	.pr_type =		SOCK_RAW,
344 	.pr_domain =		&inet6domain,
345 	.pr_flags =		PR_ATOMIC|PR_ADDR,
346 	.pr_input =		rip6_input,
347 	.pr_output =		rip6_output,
348 	.pr_ctloutput =		rip6_ctloutput,
349 	.pr_usrreqs =		&rip6_usrreqs
350 },
351 };
352 
353 extern int in6_inithead(void **, int);
354 #ifdef VIMAGE
355 extern int in6_detachhead(void **, int);
356 #endif
357 
358 struct domain inet6domain = {
359 	.dom_family =		AF_INET6,
360 	.dom_name =		"internet6",
361 	.dom_protosw =		(struct protosw *)inet6sw,
362 	.dom_protoswNPROTOSW =	(struct protosw *)
363 				&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
364 #ifdef RADIX_MPATH
365 	.dom_rtattach =		rn6_mpath_inithead,
366 #else
367 	.dom_rtattach =		in6_inithead,
368 #endif
369 #ifdef VIMAGE
370 	.dom_rtdetach =		in6_detachhead,
371 #endif
372 	.dom_rtoffset =		offsetof(struct sockaddr_in6, sin6_addr) << 3,
373 	.dom_maxrtkey =		sizeof(struct sockaddr_in6),
374 	.dom_ifattach =		in6_domifattach,
375 	.dom_ifdetach =		in6_domifdetach
376 };
377 
378 VNET_DOMAIN_SET(inet6);
379 
380 /*
381  * Internet configuration info
382  */
383 #ifndef	IPV6FORWARDING
384 #ifdef GATEWAY6
385 #define	IPV6FORWARDING	1	/* forward IP6 packets not for us */
386 #else
387 #define	IPV6FORWARDING	0	/* don't forward IP6 packets not for us */
388 #endif /* GATEWAY6 */
389 #endif /* !IPV6FORWARDING */
390 
391 #ifndef	IPV6_SENDREDIRECTS
392 #define	IPV6_SENDREDIRECTS	1
393 #endif
394 
395 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING;	/* act as router? */
396 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS;
397 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM;
398 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS;
399 VNET_DEFINE(int, ip6_accept_rtadv) = 0;
400 VNET_DEFINE(int, ip6_no_radr) = 0;
401 VNET_DEFINE(int, ip6_norbit_raif) = 0;
402 VNET_DEFINE(int, ip6_rfc6204w3) = 0;
403 VNET_DEFINE(int, ip6_maxfragpackets);	/* initialized in frag6.c:frag6_init() */
404 VNET_DEFINE(int, ip6_maxfrags);		/* initialized in frag6.c:frag6_init() */
405 VNET_DEFINE(int, ip6_log_interval) = 5;
406 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we
407 					 * process? */
408 VNET_DEFINE(int, ip6_dad_count) = 1;	/* DupAddrDetectionTransmits */
409 VNET_DEFINE(int, ip6_auto_flowlabel) = 1;
410 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr
411 					 * (RFC2462 5.5.4) */
412 VNET_DEFINE(int, ip6_rr_prune) = 5;	/* router renumbering prefix
413 					 * walk list every 5 sec. */
414 VNET_DEFINE(int, ip6_mcast_pmtu) = 0;	/* enable pMTU discovery for multicast? */
415 VNET_DEFINE(int, ip6_v6only) = 1;
416 
417 VNET_DEFINE(int, ip6_keepfaith) = 0;
418 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L;
419 #ifdef IPSTEALTH
420 VNET_DEFINE(int, ip6stealth) = 0;
421 #endif
422 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS
423 					     * (RFC 4861) */
424 
425 /* icmp6 */
426 /*
427  * BSDI4 defines these variables in in_proto.c...
428  * XXX: what if we don't define INET? Should we define pmtu6_expire
429  * or so? (jinmei@kame.net 19990310)
430  */
431 VNET_DEFINE(int, pmtu_expire) = 60*10;
432 VNET_DEFINE(int, pmtu_probe) = 60*2;
433 
434 /* raw IP6 parameters */
435 /*
436  * Nominal space allocated to a raw ip socket.
437  */
438 #define	RIPV6SNDQ	8192
439 #define	RIPV6RCVQ	8192
440 
441 VNET_DEFINE(u_long, rip6_sendspace) = RIPV6SNDQ;
442 VNET_DEFINE(u_long, rip6_recvspace) = RIPV6RCVQ;
443 
444 /* ICMPV6 parameters */
445 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */
446 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60;	/* 10 minutes */
447 VNET_DEFINE(int, icmp6errppslim) = 100;		/* 100pps */
448 /* control how to respond to NI queries */
449 VNET_DEFINE(int, icmp6_nodeinfo) =
450     (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
451 
452 /* UDP on IP6 parameters */
453 VNET_DEFINE(int, udp6_sendspace) = 9216;/* really max datagram size */
454 VNET_DEFINE(int, udp6_recvspace) = 40 * (1024 + sizeof(struct sockaddr_in6));
455 					/* 40 1K datagrams */
456 
457 /*
458  * sysctl related items.
459  */
460 SYSCTL_NODE(_net,	PF_INET6,	inet6,	CTLFLAG_RW,	0,
461 	"Internet6 Family");
462 
463 /* net.inet6 */
464 SYSCTL_NODE(_net_inet6,	IPPROTO_IPV6,	ip6,	CTLFLAG_RW, 0,	"IP6");
465 SYSCTL_NODE(_net_inet6,	IPPROTO_ICMPV6,	icmp6,	CTLFLAG_RW, 0,	"ICMP6");
466 SYSCTL_NODE(_net_inet6,	IPPROTO_UDP,	udp6,	CTLFLAG_RW, 0,	"UDP6");
467 SYSCTL_NODE(_net_inet6,	IPPROTO_TCP,	tcp6,	CTLFLAG_RW, 0,	"TCP6");
468 #ifdef SCTP
469 SYSCTL_NODE(_net_inet6,	IPPROTO_SCTP,	sctp6,	CTLFLAG_RW, 0,	"SCTP6");
470 #endif
471 #ifdef IPSEC
472 SYSCTL_NODE(_net_inet6,	IPPROTO_ESP,	ipsec6,	CTLFLAG_RW, 0,	"IPSEC6");
473 #endif /* IPSEC */
474 
475 /* net.inet6.ip6 */
476 static int
477 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
478 {
479 	int error = 0;
480 	int old;
481 
482 	VNET_SYSCTL_ARG(req, arg1);
483 
484 	error = SYSCTL_OUT(req, arg1, sizeof(int));
485 	if (error || !req->newptr)
486 		return (error);
487 	old = V_ip6_temp_preferred_lifetime;
488 	error = SYSCTL_IN(req, arg1, sizeof(int));
489 	if (V_ip6_temp_preferred_lifetime <
490 	    V_ip6_desync_factor + V_ip6_temp_regen_advance) {
491 		V_ip6_temp_preferred_lifetime = old;
492 		return (EINVAL);
493 	}
494 	return (error);
495 }
496 
497 static int
498 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
499 {
500 	int error = 0;
501 	int old;
502 
503 	VNET_SYSCTL_ARG(req, arg1);
504 
505 	error = SYSCTL_OUT(req, arg1, sizeof(int));
506 	if (error || !req->newptr)
507 		return (error);
508 	old = V_ip6_temp_valid_lifetime;
509 	error = SYSCTL_IN(req, arg1, sizeof(int));
510 	if (V_ip6_temp_valid_lifetime < V_ip6_temp_preferred_lifetime) {
511 		V_ip6_temp_preferred_lifetime = old;
512 		return (EINVAL);
513 	}
514 	return (error);
515 }
516 
517 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding, CTLFLAG_RW,
518 	&VNET_NAME(ip6_forwarding), 0, "");
519 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect, CTLFLAG_RW,
520 	&VNET_NAME(ip6_sendredirects), 0, "");
521 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim, CTLFLAG_RW,
522 	&VNET_NAME(ip6_defhlim), 0, "");
523 SYSCTL_VNET_STRUCT(_net_inet6_ip6, IPV6CTL_STATS, stats, CTLFLAG_RD,
524 	&VNET_NAME(ip6stat), ip6stat, "");
525 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
526 	CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0, "");
527 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv,
528 	CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0,
529 	"Default value of per-interface flag for accepting ICMPv6 Router"
530 	"Advertisement messages");
531 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr,
532 	CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0,
533 	"Default value of per-interface flag to control whether routers "
534 	"sending ICMPv6 RA messages on that interface are added into the "
535 	"default router list.");
536 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif, CTLFLAG_RW,
537 	&VNET_NAME(ip6_norbit_raif), 0,
538 	"Always set 0 to R flag in ICMPv6 NA messages when accepting RA"
539 	" on the interface.");
540 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3,
541 	CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0,
542 	"Accept the default router list from ICMPv6 RA messages even "
543 	"when packet forwarding enabled.");
544 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH, keepfaith, CTLFLAG_RW,
545 	&VNET_NAME(ip6_keepfaith), 0, "");
546 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval,
547 	CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0, "");
548 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit,
549 	CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0, "");
550 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count, CTLFLAG_RW,
551 	&VNET_NAME(ip6_dad_count), 0, "");
552 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel,
553 	CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0, "");
554 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim,
555 	CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0, "");
556 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version,
557 	CTLFLAG_RD, __KAME_VERSION, 0, "");
558 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated,
559 	CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0, "");
560 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune, CTLFLAG_RW,
561 	&VNET_NAME(ip6_rr_prune), 0, "");
562 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr,
563 	CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0, "");
564 SYSCTL_VNET_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
565 	CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ip6_temp_preferred_lifetime), 0,
566    	sysctl_ip6_temppltime, "I", "");
567 SYSCTL_VNET_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
568 	CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ip6_temp_valid_lifetime), 0,
569    	sysctl_ip6_tempvltime, "I", "");
570 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only,	CTLFLAG_RW,
571 	&VNET_NAME(ip6_v6only), 0, "");
572 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal,
573 	CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0,
574 	"Default value of per-interface flag for automatically adding an IPv6"
575 	" link-local address to interfaces when attached");
576 SYSCTL_VNET_STRUCT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, CTLFLAG_RD,
577 	&VNET_NAME(rip6stat), rip6stat, "");
578 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr,
579 	CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0, "");
580 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone,
581 	CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0,"");
582 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags, CTLFLAG_RW,
583 	&VNET_NAME(ip6_maxfrags), 0, "");
584 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu, CTLFLAG_RW,
585 	&VNET_NAME(ip6_mcast_pmtu), 0, "");
586 #ifdef IPSTEALTH
587 SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_RW,
588 	&VNET_NAME(ip6stealth), 0, "");
589 #endif
590 
591 #ifdef FLOWTABLE
592 VNET_DEFINE(int, ip6_output_flowtable_size) = 2048;
593 VNET_DEFINE(struct flowtable *, ip6_ft);
594 #define	V_ip6_output_flowtable_size	VNET(ip6_output_flowtable_size)
595 
596 SYSCTL_VNET_INT(_net_inet6_ip6, OID_AUTO, output_flowtable_size, CTLFLAG_RDTUN,
597     &VNET_NAME(ip6_output_flowtable_size), 2048,
598     "number of entries in the per-cpu output flow caches");
599 #endif
600 
601 /* net.inet6.icmp6 */
602 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept,
603 	CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0, "");
604 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout,
605 	CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0, "");
606 SYSCTL_VNET_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD,
607 	&VNET_NAME(icmp6stat), icmp6stat, "");
608 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune, CTLFLAG_RW,
609 	&VNET_NAME(nd6_prune), 0, "");
610 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay, CTLFLAG_RW,
611 	&VNET_NAME(nd6_delay), 0, "");
612 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries,
613 	CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0, "");
614 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries,
615 	CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0, "");
616 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback,
617 	CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0, "");
618 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo, CTLFLAG_RW,
619 	&VNET_NAME(icmp6_nodeinfo), 0, "");
620 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit,
621 	CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0, "");
622 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint,
623 	CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0, "");
624 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug, CTLFLAG_RW,
625 	&VNET_NAME(nd6_debug), 0, "");
626 SYSCTL_VNET_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
627 	nd6_onlink_ns_rfc4861, CTLFLAG_RW, &VNET_NAME(nd6_onlink_ns_rfc4861),
628 	0, "Accept 'on-link' nd6 NS in compliance with RFC 4861.");
629