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");
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