1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $
32 */
33
34 /*-
35 * Copyright (c) 1982, 1986, 1993
36 * The Regents of the University of California. All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 * SUCH DAMAGE.
61 *
62 * @(#)in_proto.c 8.1 (Berkeley) 6/10/93
63 */
64
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD: releng/12.0/sys/netinet6/in6_proto.c 337783 2018-08-14 17:27:41Z jtl $");
67
68 #include "opt_inet.h"
69 #include "opt_inet6.h"
70 #include "opt_ipsec.h"
71 #include "opt_ipstealth.h"
72 #include "opt_sctp.h"
73 #include "opt_mpath.h"
74 #include "opt_route.h"
75
76 #include <sys/param.h>
77 #include <sys/socket.h>
78 #include <sys/socketvar.h>
79 #include <sys/proc.h>
80 #include <sys/protosw.h>
81 #include <sys/jail.h>
82 #include <sys/kernel.h>
83 #include <sys/malloc.h>
84 #include <sys/domain.h>
85 #include <sys/mbuf.h>
86 #include <sys/systm.h>
87 #include <sys/sysctl.h>
88
89 #include <net/if.h>
90 #include <net/if_var.h>
91 #include <net/radix.h>
92 #include <net/route.h>
93 #ifdef RADIX_MPATH
94 #include <net/radix_mpath.h>
95 #endif
96
97 #include <netinet/in.h>
98 #include <netinet/in_systm.h>
99 #include <netinet/in_var.h>
100 #include <netinet/ip_encap.h>
101 #include <netinet/ip.h>
102 #include <netinet/ip_var.h>
103 #include <netinet/ip6.h>
104 #include <netinet6/ip6_var.h>
105 #include <netinet/icmp6.h>
106
107 #include <netinet/tcp.h>
108 #include <netinet/tcp_timer.h>
109 #include <netinet/tcp_var.h>
110 #include <netinet/udp.h>
111 #include <netinet/udp_var.h>
112 #include <netinet6/tcp6_var.h>
113 #include <netinet6/raw_ip6.h>
114 #include <netinet6/udp6_var.h>
115 #include <netinet6/pim6_var.h>
116 #include <netinet6/nd6.h>
117
118 #ifdef SCTP
119 #include <netinet/in_pcb.h>
120 #include <netinet/sctp_pcb.h>
121 #include <netinet/sctp.h>
122 #include <netinet/sctp_var.h>
123 #include <netinet6/sctp6_var.h>
124 #endif /* SCTP */
125
126 #include <netinet6/ip6protosw.h>
127
128 /*
129 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
130 */
131 FEATURE(inet6, "Internet Protocol version 6");
132
133 extern struct domain inet6domain;
134 static struct pr_usrreqs nousrreqs;
135
136 #define PR_LISTEN 0
137 #define PR_ABRTACPTDIS 0
138
139 /* Spacer for loadable protocols. */
140 #define IP6PROTOSPACER \
141 { \
142 .pr_domain = &inet6domain, \
143 .pr_protocol = PROTO_SPACER, \
144 .pr_usrreqs = &nousrreqs \
145 }
146
147 struct protosw inet6sw[] = {
148 {
149 .pr_type = 0,
150 .pr_domain = &inet6domain,
151 .pr_protocol = IPPROTO_IPV6,
152 .pr_init = ip6_init,
153 .pr_slowtimo = frag6_slowtimo,
154 .pr_drain = frag6_drain,
155 .pr_usrreqs = &nousrreqs,
156 },
157 {
158 .pr_type = SOCK_DGRAM,
159 .pr_domain = &inet6domain,
160 .pr_protocol = IPPROTO_UDP,
161 .pr_flags = PR_ATOMIC|PR_ADDR,
162 .pr_input = udp6_input,
163 .pr_ctlinput = udp6_ctlinput,
164 .pr_ctloutput = ip6_ctloutput,
165 #ifndef INET /* Do not call initialization twice. */
166 .pr_init = udp_init,
167 #endif
168 .pr_usrreqs = &udp6_usrreqs,
169 },
170 {
171 .pr_type = SOCK_STREAM,
172 .pr_domain = &inet6domain,
173 .pr_protocol = IPPROTO_TCP,
174 .pr_flags = PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD|PR_LISTEN,
175 .pr_input = tcp6_input,
176 .pr_ctlinput = tcp6_ctlinput,
177 .pr_ctloutput = tcp_ctloutput,
178 #ifndef INET /* don't call initialization and timeout routines twice */
179 .pr_init = tcp_init,
180 .pr_slowtimo = tcp_slowtimo,
181 #endif
182 .pr_drain = tcp_drain,
183 .pr_usrreqs = &tcp6_usrreqs,
184 },
185 #ifdef SCTP
186 {
187 .pr_type = SOCK_SEQPACKET,
188 .pr_domain = &inet6domain,
189 .pr_protocol = IPPROTO_SCTP,
190 .pr_flags = PR_WANTRCVD|PR_LASTHDR,
191 .pr_input = sctp6_input,
192 .pr_ctlinput = sctp6_ctlinput,
193 .pr_ctloutput = sctp_ctloutput,
194 .pr_drain = sctp_drain,
195 #ifndef INET /* Do not call initialization twice. */
196 .pr_init = sctp_init,
197 #endif
198 .pr_usrreqs = &sctp6_usrreqs
199 },
200 {
201 .pr_type = SOCK_STREAM,
202 .pr_domain = &inet6domain,
203 .pr_protocol = IPPROTO_SCTP,
204 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR,
205 .pr_input = sctp6_input,
206 .pr_ctlinput = sctp6_ctlinput,
207 .pr_ctloutput = sctp_ctloutput,
208 .pr_drain = sctp_drain,
209 .pr_usrreqs = &sctp6_usrreqs
210 },
211 #endif /* SCTP */
212 {
213 .pr_type = SOCK_DGRAM,
214 .pr_domain = &inet6domain,
215 .pr_protocol = IPPROTO_UDPLITE,
216 .pr_flags = PR_ATOMIC|PR_ADDR,
217 .pr_input = udp6_input,
218 .pr_ctlinput = udplite6_ctlinput,
219 .pr_ctloutput = udp_ctloutput,
220 #ifndef INET /* Do not call initialization twice. */
221 .pr_init = udplite_init,
222 #endif
223 .pr_usrreqs = &udp6_usrreqs,
224 },
225 {
226 .pr_type = SOCK_RAW,
227 .pr_domain = &inet6domain,
228 .pr_protocol = IPPROTO_RAW,
229 .pr_flags = PR_ATOMIC|PR_ADDR,
230 .pr_input = rip6_input,
231 .pr_output = rip6_output,
232 .pr_ctlinput = rip6_ctlinput,
233 .pr_ctloutput = rip6_ctloutput,
234 #ifndef INET /* Do not call initialization twice. */
235 .pr_init = rip_init,
236 #endif
237 .pr_usrreqs = &rip6_usrreqs
238 },
239 {
240 .pr_type = SOCK_RAW,
241 .pr_domain = &inet6domain,
242 .pr_protocol = IPPROTO_ICMPV6,
243 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
244 .pr_input = icmp6_input,
245 .pr_output = rip6_output,
246 .pr_ctlinput = rip6_ctlinput,
247 .pr_ctloutput = rip6_ctloutput,
248 .pr_fasttimo = icmp6_fasttimo,
249 .pr_slowtimo = icmp6_slowtimo,
250 .pr_usrreqs = &rip6_usrreqs
251 },
252 {
253 .pr_type = SOCK_RAW,
254 .pr_domain = &inet6domain,
255 .pr_protocol = IPPROTO_DSTOPTS,
256 .pr_flags = PR_ATOMIC|PR_ADDR,
257 .pr_input = dest6_input,
258 .pr_usrreqs = &nousrreqs
259 },
260 {
261 .pr_type = SOCK_RAW,
262 .pr_domain = &inet6domain,
263 .pr_protocol = IPPROTO_ROUTING,
264 .pr_flags = PR_ATOMIC|PR_ADDR,
265 .pr_input = route6_input,
266 .pr_usrreqs = &nousrreqs
267 },
268 {
269 .pr_type = SOCK_RAW,
270 .pr_domain = &inet6domain,
271 .pr_protocol = IPPROTO_FRAGMENT,
272 .pr_flags = PR_ATOMIC|PR_ADDR,
273 .pr_input = frag6_input,
274 .pr_usrreqs = &nousrreqs
275 },
276 #ifdef INET
277 {
278 .pr_type = SOCK_RAW,
279 .pr_domain = &inet6domain,
280 .pr_protocol = IPPROTO_IPV4,
281 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
282 .pr_input = encap6_input,
283 .pr_output = rip6_output,
284 .pr_ctloutput = rip6_ctloutput,
285 .pr_usrreqs = &rip6_usrreqs
286 },
287 #endif /* INET */
288 {
289 .pr_type = SOCK_RAW,
290 .pr_domain = &inet6domain,
291 .pr_protocol = IPPROTO_IPV6,
292 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
293 .pr_input = encap6_input,
294 .pr_output = rip6_output,
295 .pr_ctloutput = rip6_ctloutput,
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_usrreqs = &rip6_usrreqs
307 },
308 {
309 .pr_type = SOCK_RAW,
310 .pr_domain = &inet6domain,
311 .pr_protocol = IPPROTO_PIM,
312 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
313 .pr_input = encap6_input,
314 .pr_output = rip6_output,
315 .pr_ctloutput = rip6_ctloutput,
316 .pr_usrreqs = &rip6_usrreqs
317 },
318 /* Spacer n-times for loadable protocols. */
319 IP6PROTOSPACER,
320 IP6PROTOSPACER,
321 IP6PROTOSPACER,
322 IP6PROTOSPACER,
323 IP6PROTOSPACER,
324 IP6PROTOSPACER,
325 IP6PROTOSPACER,
326 IP6PROTOSPACER,
327 /* raw wildcard */
328 {
329 .pr_type = SOCK_RAW,
330 .pr_domain = &inet6domain,
331 .pr_flags = PR_ATOMIC|PR_ADDR,
332 .pr_input = rip6_input,
333 .pr_output = rip6_output,
334 .pr_ctloutput = rip6_ctloutput,
335 .pr_usrreqs = &rip6_usrreqs
336 },
337 };
338
339 extern int in6_inithead(void **, int);
340 #ifdef VIMAGE
341 extern int in6_detachhead(void **, int);
342 #endif
343
344 struct domain inet6domain = {
345 .dom_family = AF_INET6,
346 .dom_name = "internet6",
347 .dom_protosw = (struct protosw *)inet6sw,
348 .dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)],
349 #ifdef RADIX_MPATH
350 .dom_rtattach = rn6_mpath_inithead,
351 #else
352 .dom_rtattach = in6_inithead,
353 #endif
354 #ifdef VIMAGE
355 .dom_rtdetach = in6_detachhead,
356 #endif
357 .dom_ifattach = in6_domifattach,
358 .dom_ifdetach = in6_domifdetach,
359 .dom_ifmtu = in6_domifmtu
360 };
361
362 VNET_DOMAIN_SET(inet6);
363
364 /*
365 * Internet configuration info
366 */
367 #ifndef IPV6FORWARDING
368 #ifdef GATEWAY6
369 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */
370 #else
371 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */
372 #endif /* GATEWAY6 */
373 #endif /* !IPV6FORWARDING */
374
375 #ifndef IPV6_SENDREDIRECTS
376 #define IPV6_SENDREDIRECTS 1
377 #endif
378
379 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */
380 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS;
381 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM;
382 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS;
383 VNET_DEFINE(int, ip6_accept_rtadv) = 0;
384 VNET_DEFINE(int, ip6_no_radr) = 0;
385 VNET_DEFINE(int, ip6_norbit_raif) = 0;
386 VNET_DEFINE(int, ip6_rfc6204w3) = 0;
387 VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */
388 int ip6_maxfrags; /* initialized in frag6.c:frag6_init() */
389 VNET_DEFINE(int, ip6_maxfragbucketsize);/* initialized in frag6.c:frag6_init() */
390 VNET_DEFINE(int, ip6_maxfragsperpacket); /* initialized in frag6.c:frag6_init() */
391 VNET_DEFINE(int, ip6_log_interval) = 5;
392 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we
393 * process? */
394 VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */
395 VNET_DEFINE(int, ip6_auto_flowlabel) = 1;
396 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr
397 * (RFC2462 5.5.4) */
398 VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix
399 * walk list every 5 sec. */
400 VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */
401 VNET_DEFINE(int, ip6_v6only) = 1;
402
403 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L;
404 #ifdef IPSTEALTH
405 VNET_DEFINE(int, ip6stealth) = 0;
406 #endif
407 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS
408 * (RFC 4861) */
409
410 /* icmp6 */
411 /*
412 * BSDI4 defines these variables in in_proto.c...
413 * XXX: what if we don't define INET? Should we define pmtu6_expire
414 * or so? (jinmei@kame.net 19990310)
415 */
416 VNET_DEFINE(int, pmtu_expire) = 60*10;
417 VNET_DEFINE(int, pmtu_probe) = 60*2;
418
419 /* ICMPV6 parameters */
420 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */
421 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */
422 VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */
423 /* control how to respond to NI queries */
424 VNET_DEFINE(int, icmp6_nodeinfo) =
425 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
426 VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1;
427
428 /*
429 * sysctl related items.
430 */
431 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0,
432 "Internet6 Family");
433
434 /* net.inet6 */
435 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6");
436 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6");
437 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6");
438 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6");
439 #ifdef SCTP
440 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6");
441 #endif
442 #if defined(IPSEC) || defined(IPSEC_SUPPORT)
443 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6");
444 #endif /* IPSEC */
445
446 /* net.inet6.ip6 */
447 static int
448 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
449 {
450 int error, val;
451
452 val = V_ip6_temp_preferred_lifetime;
453 error = sysctl_handle_int(oidp, &val, 0, req);
454 if (error != 0 || !req->newptr)
455 return (error);
456 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance)
457 return (EINVAL);
458 V_ip6_temp_preferred_lifetime = val;
459 return (0);
460 }
461
462 static int
463 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
464 {
465 int error, val;
466
467 val = V_ip6_temp_valid_lifetime;
468 error = sysctl_handle_int(oidp, &val, 0, req);
469 if (error != 0 || !req->newptr)
470 return (error);
471 if (val < V_ip6_temp_preferred_lifetime)
472 return (EINVAL);
473 V_ip6_temp_valid_lifetime = val;
474 return (0);
475 }
476
477 static int
478 sysctl_ip6_maxfragpackets(SYSCTL_HANDLER_ARGS)
479 {
480 int error, val;
481
482 val = V_ip6_maxfragpackets;
483 error = sysctl_handle_int(oidp, &val, 0, req);
484 if (error != 0 || !req->newptr)
485 return (error);
486 V_ip6_maxfragpackets = val;
487 frag6_set_bucketsize();
488 return (0);
489 }
490
491 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding,
492 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0,
493 "Enable forwarding of IPv6 packets between interfaces");
494 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect,
495 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0,
496 "Send ICMPv6 redirects for unforwardable IPv6 packets");
497 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim,
498 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0,
499 "Default hop limit to use for outgoing IPv6 packets");
500 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat,
501 ip6stat,
502 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)");
503 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
504 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW, NULL, 0,
505 sysctl_ip6_maxfragpackets, "I",
506 "Default maximum number of outstanding fragmented IPv6 packets. "
507 "A value of 0 means no fragmented packets will be accepted, while a "
508 "a value of -1 means no limit");
509 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv,
510 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0,
511 "Default value of per-interface flag for accepting ICMPv6 RA messages");
512 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr,
513 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0,
514 "Default value of per-interface flag to control whether routers "
515 "sending ICMPv6 RA messages on that interface are added into the "
516 "default router list");
517 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif,
518 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0,
519 "Always set clear the R flag in ICMPv6 NA messages when accepting RA "
520 "on the interface");
521 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3,
522 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0,
523 "Accept the default router list from ICMPv6 RA messages even "
524 "when packet forwarding is enabled");
525 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval,
526 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0,
527 "Frequency in seconds at which to log IPv6 forwarding errors");
528 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit,
529 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0,
530 "Default maximum number of IPv6 extension headers permitted on "
531 "incoming IPv6 packets, 0 for no artificial limit");
532 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count,
533 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0,
534 "Number of ICMPv6 NS messages sent during duplicate address detection");
535 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel,
536 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0,
537 "Provide an IPv6 flowlabel in outbound packets");
538 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim,
539 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0,
540 "Default hop limit for IPv6 multicast packets originating from this "
541 "node");
542 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version,
543 CTLFLAG_RD, __KAME_VERSION, 0,
544 "KAME version string");
545 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated,
546 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0,
547 "Allow the use of addresses whose preferred lifetimes have expired");
548 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune,
549 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0,
550 ""); /* XXX unused */
551 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr,
552 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0,
553 "Create RFC3041 temporary addresses for autoconfigured addresses");
554 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
555 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
556 NULL, 0, sysctl_ip6_temppltime, "I",
557 "Maximum preferred lifetime for temporary addresses");
558 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
559 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
560 NULL, 0, sysctl_ip6_tempvltime, "I",
561 "Maximum valid lifetime for temporary addresses");
562 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only,
563 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0,
564 "Restrict AF_INET6 sockets to IPv6 addresses only");
565 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal,
566 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0,
567 "Default value of per-interface flag for automatically adding an IPv6 "
568 "link-local address to interfaces when attached");
569 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats,
570 struct rip6stat, rip6stat,
571 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)");
572 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr,
573 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0,
574 "Prefer RFC3041 temporary addresses in source address selection");
575 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone,
576 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0,
577 "Use the default scope zone when none is specified");
578 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags,
579 CTLFLAG_RW, &ip6_maxfrags, 0,
580 "Maximum allowed number of outstanding IPv6 packet fragments. "
581 "A value of 0 means no fragmented packets will be accepted, while a "
582 "a value of -1 means no limit");
583 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGBUCKETSIZE, maxfragbucketsize,
584 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragbucketsize), 0,
585 "Maximum number of reassembly queues per hash bucket");
586 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGSPERPACKET, maxfragsperpacket,
587 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragsperpacket), 0,
588 "Maximum allowed number of fragments per packet");
589 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu,
590 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0,
591 "Enable path MTU discovery for multicast packets");
592 #ifdef IPSTEALTH
593 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW,
594 &VNET_NAME(ip6stealth), 0,
595 "Forward IPv6 packets without decrementing their TTL");
596 #endif
597
598 /* net.inet6.icmp6 */
599 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept,
600 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0,
601 "Accept ICMPv6 redirect messages");
602 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout,
603 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0,
604 ""); /* XXX unused */
605 SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats,
606 struct icmp6stat, icmp6stat,
607 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)");
608 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune,
609 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0,
610 "Frequency in seconds of checks for expired prefixes and routers");
611 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay,
612 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0,
613 "Delay in seconds before probing for reachability");
614 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries,
615 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0,
616 "Number of ICMPv6 NS messages sent during reachability detection");
617 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries,
618 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0,
619 "Number of ICMPv6 NS messages sent during address resolution");
620 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback,
621 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0,
622 "Create a loopback route when configuring an IPv6 address");
623 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo,
624 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0,
625 "Mask of enabled RF4620 node information query types");
626 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX,
627 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW,
628 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0,
629 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup "
630 "for compatibility with KAME implementation");
631 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit,
632 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0,
633 "Maximum number of ICMPv6 error messages per second");
634 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint,
635 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0,
636 ""); /* XXX unused */
637 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug,
638 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0,
639 "Log NDP debug messages");
640 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
641 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW,
642 &VNET_NAME(nd6_onlink_ns_rfc4861), 0,
643 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861");
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