2005-01-07 02:30:35 +00:00
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/*-
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2017-11-20 19:43:44 +00:00
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* SPDX-License-Identifier: BSD-3-Clause
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*
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1999-11-22 02:45:11 +00:00
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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2007-12-10 16:03:40 +00:00
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*
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* $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $
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1999-11-22 02:45:11 +00:00
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*/
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2005-01-07 02:30:35 +00:00
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/*-
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1999-11-22 02:45:11 +00:00
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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|
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* notice, this list of conditions and the following disclaimer.
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|
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* 2. Redistributions in binary form must reproduce the above copyright
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|
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* notice, this list of conditions and the following disclaimer in the
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|
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* documentation and/or other materials provided with the distribution.
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2017-02-28 23:42:47 +00:00
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* 3. Neither the name of the University nor the names of its contributors
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1999-11-22 02:45:11 +00:00
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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|
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)in_proto.c 8.1 (Berkeley) 6/10/93
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*/
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2007-12-10 16:03:40 +00:00
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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2000-01-09 19:17:30 +00:00
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#include "opt_inet.h"
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2000-07-04 16:35:15 +00:00
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#include "opt_inet6.h"
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1999-12-22 19:13:38 +00:00
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#include "opt_ipsec.h"
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2005-08-10 09:13:35 +00:00
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#include "opt_ipstealth.h"
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2006-11-03 15:23:16 +00:00
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#include "opt_sctp.h"
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This patch provides the back end support for equal-cost multi-path
(ECMP) for both IPv4 and IPv6. Previously, multipath route insertion
is disallowed. For example,
route add -net 192.103.54.0/24 10.9.44.1
route add -net 192.103.54.0/24 10.9.44.2
The second route insertion will trigger an error message of
"add net 192.103.54.0/24: gateway 10.2.5.2: route already in table"
Multiple default routes can also be inserted. Here is the netstat
output:
default 10.2.5.1 UGS 0 3074 bge0 =>
default 10.2.5.2 UGS 0 0 bge0
When multipath routes exist, the "route delete" command requires
a specific gateway to be specified or else an error message would
be displayed. For example,
route delete default
would fail and trigger the following error message:
"route: writing to routing socket: No such process"
"delete net default: not in table"
On the other hand,
route delete default 10.2.5.2
would be successful: "delete net default: gateway 10.2.5.2"
One does not have to specify a gateway if there is only a single
route for a particular destination.
I need to perform more testings on address aliases and multiple
interfaces that have the same IP prefixes. This patch as it
stands today is not yet ready for prime time. Therefore, the ECMP
code fragments are fully guarded by the RADIX_MPATH macro.
Include the "options RADIX_MPATH" in the kernel configuration
to enable this feature.
Reviewed by: robert, sam, gnn, julian, kmacy
2008-04-13 05:45:14 +00:00
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#include "opt_mpath.h"
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2010-05-09 20:32:00 +00:00
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#include "opt_route.h"
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1999-12-22 19:13:38 +00:00
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1999-11-22 02:45:11 +00:00
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
|
Conditionally compile out V_ globals while instantiating the appropriate
container structures, depending on VIMAGE_GLOBALS compile time option.
Make VIMAGE_GLOBALS a new compile-time option, which by default will not
be defined, resulting in instatiations of global variables selected for
V_irtualization (enclosed in #ifdef VIMAGE_GLOBALS blocks) to be
effectively compiled out. Instantiate new global container structures
to hold V_irtualized variables: vnet_net_0, vnet_inet_0, vnet_inet6_0,
vnet_ipsec_0, vnet_netgraph_0, and vnet_gif_0.
Update the VSYM() macro so that depending on VIMAGE_GLOBALS the V_
macros resolve either to the original globals, or to fields inside
container structures, i.e. effectively
#ifdef VIMAGE_GLOBALS
#define V_rt_tables rt_tables
#else
#define V_rt_tables vnet_net_0._rt_tables
#endif
Update SYSCTL_V_*() macros to operate either on globals or on fields
inside container structs.
Extend the internal kldsym() lookups with the ability to resolve
selected fields inside the virtualization container structs. This
applies only to the fields which are explicitly registered for kldsym()
visibility via VNET_MOD_DECLARE() and vnet_mod_register(), currently
this is done only in sys/net/if.c.
Fix a few broken instances of MODULE_GLOBAL() macro use in SCTP code,
and modify the MODULE_GLOBAL() macro to resolve to V_ macros, which in
turn result in proper code being generated depending on VIMAGE_GLOBALS.
De-virtualize local static variables in sys/contrib/pf/net/pf_subr.c
which were prematurely V_irtualized by automated V_ prepending scripts
during earlier merging steps. PF virtualization will be done
separately, most probably after next PF import.
Convert a few variable initializations at instantiation to
initialization in init functions, most notably in ipfw. Also convert
TUNABLE_INT() initializers for V_ variables to TUNABLE_FETCH_INT() in
initializer functions.
Discussed at: devsummit Strassburg
Reviewed by: bz, julian
Approved by: julian (mentor)
Obtained from: //depot/projects/vimage-commit2/...
X-MFC after: never
Sponsored by: NLnet Foundation, The FreeBSD Foundation
2008-12-10 23:12:39 +00:00
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#include <sys/proc.h>
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1999-11-22 02:45:11 +00:00
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#include <sys/protosw.h>
|
2009-06-17 15:01:01 +00:00
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#include <sys/jail.h>
|
1999-11-22 02:45:11 +00:00
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#include <sys/kernel.h>
|
2016-02-01 17:41:21 +00:00
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#include <sys/malloc.h>
|
1999-11-22 02:45:11 +00:00
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#include <sys/domain.h>
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#include <sys/mbuf.h>
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#include <sys/systm.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
|
2013-10-26 17:58:36 +00:00
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#include <net/if_var.h>
|
1999-11-22 02:45:11 +00:00
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#include <net/radix.h>
|
|
|
|
|
#include <net/route.h>
|
This patch provides the back end support for equal-cost multi-path
(ECMP) for both IPv4 and IPv6. Previously, multipath route insertion
is disallowed. For example,
route add -net 192.103.54.0/24 10.9.44.1
route add -net 192.103.54.0/24 10.9.44.2
The second route insertion will trigger an error message of
"add net 192.103.54.0/24: gateway 10.2.5.2: route already in table"
Multiple default routes can also be inserted. Here is the netstat
output:
default 10.2.5.1 UGS 0 3074 bge0 =>
default 10.2.5.2 UGS 0 0 bge0
When multipath routes exist, the "route delete" command requires
a specific gateway to be specified or else an error message would
be displayed. For example,
route delete default
would fail and trigger the following error message:
"route: writing to routing socket: No such process"
"delete net default: not in table"
On the other hand,
route delete default 10.2.5.2
would be successful: "delete net default: gateway 10.2.5.2"
One does not have to specify a gateway if there is only a single
route for a particular destination.
I need to perform more testings on address aliases and multiple
interfaces that have the same IP prefixes. This patch as it
stands today is not yet ready for prime time. Therefore, the ECMP
code fragments are fully guarded by the RADIX_MPATH macro.
Include the "options RADIX_MPATH" in the kernel configuration
to enable this feature.
Reviewed by: robert, sam, gnn, julian, kmacy
2008-04-13 05:45:14 +00:00
|
|
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#ifdef RADIX_MPATH
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#include <net/radix_mpath.h>
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#endif
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1999-11-22 02:45:11 +00:00
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
|
2000-07-04 16:35:15 +00:00
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#include <netinet/ip_encap.h>
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1999-11-22 02:45:11 +00:00
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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2000-07-04 16:35:15 +00:00
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#include <netinet/ip6.h>
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1999-11-22 02:45:11 +00:00
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#include <netinet6/ip6_var.h>
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2000-07-04 16:35:15 +00:00
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#include <netinet/icmp6.h>
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1999-11-22 02:45:11 +00:00
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#include <netinet/tcp.h>
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#include <netinet/tcp_timer.h>
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#include <netinet/tcp_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet6/tcp6_var.h>
|
2001-06-11 12:39:29 +00:00
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#include <netinet6/raw_ip6.h>
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1999-11-22 02:45:11 +00:00
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#include <netinet6/udp6_var.h>
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#include <netinet6/pim6_var.h>
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#include <netinet6/nd6.h>
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2006-11-03 15:23:16 +00:00
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#ifdef SCTP
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#include <netinet/in_pcb.h>
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#include <netinet/sctp_pcb.h>
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#include <netinet/sctp.h>
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#include <netinet/sctp_var.h>
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#include <netinet6/sctp6_var.h>
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#endif /* SCTP */
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1999-11-22 02:45:11 +00:00
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#include <netinet6/ip6protosw.h>
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/*
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* TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
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*/
|
2011-05-25 00:34:25 +00:00
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FEATURE(inet6, "Internet Protocol version 6");
|
1999-11-22 02:45:11 +00:00
|
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2000-07-04 16:35:15 +00:00
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extern struct domain inet6domain;
|
2005-08-10 06:38:46 +00:00
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static struct pr_usrreqs nousrreqs;
|
1999-11-22 02:45:11 +00:00
|
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2001-06-11 12:39:29 +00:00
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#define PR_LISTEN 0
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#define PR_ABRTACPTDIS 0
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2010-08-09 19:53:24 +00:00
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/* Spacer for loadable protocols. */
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#define IP6PROTOSPACER \
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{ \
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.pr_domain = &inet6domain, \
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.pr_protocol = PROTO_SPACER, \
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.pr_usrreqs = &nousrreqs \
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}
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|
2014-08-08 01:57:15 +00:00
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|
struct protosw inet6sw[] = {
|
2005-11-09 13:29:16 +00:00
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{
|
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.pr_type = 0,
|
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.pr_domain = &inet6domain,
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.pr_protocol = IPPROTO_IPV6,
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.pr_init = ip6_init,
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.pr_slowtimo = frag6_slowtimo,
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.pr_drain = frag6_drain,
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.pr_usrreqs = &nousrreqs,
|
1999-11-22 02:45:11 +00:00
|
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},
|
2005-11-09 13:29:16 +00:00
|
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|
{
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.pr_type = SOCK_DGRAM,
|
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.pr_domain = &inet6domain,
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.pr_protocol = IPPROTO_UDP,
|
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.pr_flags = PR_ATOMIC|PR_ADDR,
|
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.pr_input = udp6_input,
|
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|
|
|
.pr_ctlinput = udp6_ctlinput,
|
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|
|
.pr_ctloutput = ip6_ctloutput,
|
2011-04-20 08:05:23 +00:00
|
|
|
#ifndef INET /* Do not call initialization twice. */
|
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|
.pr_init = udp_init,
|
|
|
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|
#endif
|
2005-11-09 13:29:16 +00:00
|
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|
.pr_usrreqs = &udp6_usrreqs,
|
1999-12-07 17:39:16 +00:00
|
|
|
},
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_STREAM,
|
|
|
|
|
.pr_domain = &inet6domain,
|
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|
|
|
.pr_protocol = IPPROTO_TCP,
|
2018-07-30 21:27:26 +00:00
|
|
|
.pr_flags = PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD|PR_LISTEN,
|
2005-11-09 13:29:16 +00:00
|
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|
.pr_input = tcp6_input,
|
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|
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|
.pr_ctlinput = tcp6_ctlinput,
|
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|
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.pr_ctloutput = tcp_ctloutput,
|
|
|
|
|
#ifndef INET /* don't call initialization and timeout routines twice */
|
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|
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|
.pr_init = tcp_init,
|
|
|
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|
.pr_slowtimo = tcp_slowtimo,
|
2000-01-09 19:17:30 +00:00
|
|
|
#endif
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_drain = tcp_drain,
|
|
|
|
|
.pr_usrreqs = &tcp6_usrreqs,
|
2000-01-09 19:17:30 +00:00
|
|
|
},
|
2006-11-03 15:23:16 +00:00
|
|
|
#ifdef SCTP
|
2007-07-05 16:29:40 +00:00
|
|
|
{
|
2011-07-12 19:29:29 +00:00
|
|
|
.pr_type = SOCK_SEQPACKET,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_SCTP,
|
2017-02-13 11:37:52 +00:00
|
|
|
.pr_flags = PR_WANTRCVD|PR_LASTHDR,
|
2011-07-12 19:29:29 +00:00
|
|
|
.pr_input = sctp6_input,
|
|
|
|
|
.pr_ctlinput = sctp6_ctlinput,
|
|
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|
|
.pr_ctloutput = sctp_ctloutput,
|
|
|
|
|
.pr_drain = sctp_drain,
|
2011-04-20 08:05:23 +00:00
|
|
|
#ifndef INET /* Do not call initialization twice. */
|
2011-07-12 19:29:29 +00:00
|
|
|
.pr_init = sctp_init,
|
2011-04-20 08:05:23 +00:00
|
|
|
#endif
|
2011-07-12 19:29:29 +00:00
|
|
|
.pr_usrreqs = &sctp6_usrreqs
|
2006-11-03 15:23:16 +00:00
|
|
|
},
|
2007-07-05 16:29:40 +00:00
|
|
|
{
|
2011-07-12 19:29:29 +00:00
|
|
|
.pr_type = SOCK_STREAM,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_SCTP,
|
2017-02-13 11:37:52 +00:00
|
|
|
.pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR,
|
2011-07-12 19:29:29 +00:00
|
|
|
.pr_input = sctp6_input,
|
2014-04-07 01:55:53 +00:00
|
|
|
.pr_ctlinput = sctp6_ctlinput,
|
2011-07-12 19:29:29 +00:00
|
|
|
.pr_ctloutput = sctp_ctloutput,
|
|
|
|
|
.pr_drain = sctp_drain,
|
|
|
|
|
.pr_usrreqs = &sctp6_usrreqs
|
2006-11-03 15:23:16 +00:00
|
|
|
},
|
|
|
|
|
#endif /* SCTP */
|
2014-04-07 01:53:03 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_DGRAM,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_UDPLITE,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
|
|
|
.pr_input = udp6_input,
|
|
|
|
|
.pr_ctlinput = udplite6_ctlinput,
|
|
|
|
|
.pr_ctloutput = udp_ctloutput,
|
|
|
|
|
#ifndef INET /* Do not call initialization twice. */
|
|
|
|
|
.pr_init = udplite_init,
|
|
|
|
|
#endif
|
|
|
|
|
.pr_usrreqs = &udp6_usrreqs,
|
|
|
|
|
},
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_RAW,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
|
|
|
.pr_input = rip6_input,
|
2014-08-15 02:43:02 +00:00
|
|
|
.pr_output = rip6_output,
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_ctlinput = rip6_ctlinput,
|
|
|
|
|
.pr_ctloutput = rip6_ctloutput,
|
2011-04-20 08:05:23 +00:00
|
|
|
#ifndef INET /* Do not call initialization twice. */
|
|
|
|
|
.pr_init = rip_init,
|
|
|
|
|
#endif
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_usrreqs = &rip6_usrreqs
|
1999-11-22 02:45:11 +00:00
|
|
|
},
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_ICMPV6,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
|
|
|
.pr_input = icmp6_input,
|
2014-08-15 02:43:02 +00:00
|
|
|
.pr_output = rip6_output,
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_ctlinput = rip6_ctlinput,
|
|
|
|
|
.pr_ctloutput = rip6_ctloutput,
|
|
|
|
|
.pr_fasttimo = icmp6_fasttimo,
|
Bite the bullet, and make the IPv6 SSM and MLDv2 mega-commit:
import from p4 bms_netdev. Summary of changes:
* Connect netinet6/in6_mcast.c to build.
The legacy KAME KPIs are mostly preserved.
* Eliminate now dead code from ip6_output.c.
Don't do mbuf bingo, we are not going to do RFC 2292 style
CMSG tricks for multicast options as they are not required
by any current IPv6 normative reference.
* Refactor transports (UDP, raw_ip6) to do own mcast filtering.
SCTP, TCP unaffected by this change.
* Add ip6_msource, in6_msource structs to in6_var.h.
* Hookup mld_ifinfo state to in6_ifextra, allocate from
domifattach path.
* Eliminate IN6_LOOKUP_MULTI(), it is no longer referenced.
Kernel consumers which need this should use in6m_lookup().
* Refactor IPv6 socket group memberships to use a vector (like IPv4).
* Update ifmcstat(8) for IPv6 SSM.
* Add witness lock order for IN6_MULTI_LOCK.
* Move IN6_MULTI_LOCK out of lower ip6_output()/ip6_input() paths.
* Introduce IP6STAT_ADD/SUB/INC/DEC as per rwatson's IPv4 cleanup.
* Update carp(4) for new IPv6 SSM KPIs.
* Virtualize ip6_mrouter socket.
Changes mostly localized to IPv6 MROUTING.
* Don't do a local group lookup in MROUTING.
* Kill unused KAME prototypes in6_purgemkludge(), in6_restoremkludge().
* Preserve KAME DAD timer jitter behaviour in MLDv1 compatibility mode.
* Bump __FreeBSD_version to 800084.
* Update UPDATING.
NOTE WELL:
* This code hasn't been tested against real MLDv2 queriers
(yet), although the on-wire protocol has been verified in Wireshark.
* There are a few unresolved issues in the socket layer APIs to
do with scope ID propagation.
* There is a LOR present in ip6_output()'s use of
in6_setscope() which needs to be resolved. See comments in mld6.c.
This is believed to be benign and can't be avoided for the moment
without re-introducing an indirect netisr.
This work was mostly derived from the IGMPv3 implementation, and
has been sponsored by a third party.
2009-04-29 19:19:13 +00:00
|
|
|
.pr_slowtimo = icmp6_slowtimo,
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_usrreqs = &rip6_usrreqs
|
1999-11-22 02:45:11 +00:00
|
|
|
},
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_DSTOPTS,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
|
|
|
.pr_input = dest6_input,
|
|
|
|
|
.pr_usrreqs = &nousrreqs
|
1999-11-22 02:45:11 +00:00
|
|
|
},
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_ROUTING,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
|
|
|
.pr_input = route6_input,
|
|
|
|
|
.pr_usrreqs = &nousrreqs
|
1999-11-22 02:45:11 +00:00
|
|
|
},
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_FRAGMENT,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
|
|
|
.pr_input = frag6_input,
|
|
|
|
|
.pr_usrreqs = &nousrreqs
|
1999-11-22 02:45:11 +00:00
|
|
|
},
|
2000-07-04 16:35:15 +00:00
|
|
|
#ifdef INET
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_IPV4,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
|
|
|
.pr_input = encap6_input,
|
2014-08-15 02:43:02 +00:00
|
|
|
.pr_output = rip6_output,
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_ctloutput = rip6_ctloutput,
|
|
|
|
|
.pr_usrreqs = &rip6_usrreqs
|
1999-11-22 02:45:11 +00:00
|
|
|
},
|
2002-04-19 04:46:24 +00:00
|
|
|
#endif /* INET */
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_IPV6,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
|
|
|
.pr_input = encap6_input,
|
2014-08-15 02:43:02 +00:00
|
|
|
.pr_output = rip6_output,
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_ctloutput = rip6_ctloutput,
|
|
|
|
|
.pr_usrreqs = &rip6_usrreqs
|
1999-11-22 02:45:11 +00:00
|
|
|
},
|
2014-11-07 19:13:19 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_GRE,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
|
|
|
|
.pr_input = encap6_input,
|
|
|
|
|
.pr_output = rip6_output,
|
|
|
|
|
.pr_ctloutput = rip6_ctloutput,
|
|
|
|
|
.pr_usrreqs = &rip6_usrreqs
|
|
|
|
|
},
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_protocol = IPPROTO_PIM,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
|
2007-02-24 11:38:47 +00:00
|
|
|
.pr_input = encap6_input,
|
2014-08-15 02:43:02 +00:00
|
|
|
.pr_output = rip6_output,
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_ctloutput = rip6_ctloutput,
|
|
|
|
|
.pr_usrreqs = &rip6_usrreqs
|
2000-01-28 05:10:56 +00:00
|
|
|
},
|
2010-08-09 19:53:24 +00:00
|
|
|
/* Spacer n-times for loadable protocols. */
|
|
|
|
|
IP6PROTOSPACER,
|
|
|
|
|
IP6PROTOSPACER,
|
|
|
|
|
IP6PROTOSPACER,
|
|
|
|
|
IP6PROTOSPACER,
|
|
|
|
|
IP6PROTOSPACER,
|
|
|
|
|
IP6PROTOSPACER,
|
|
|
|
|
IP6PROTOSPACER,
|
|
|
|
|
IP6PROTOSPACER,
|
1999-11-22 02:45:11 +00:00
|
|
|
/* raw wildcard */
|
2005-11-09 13:29:16 +00:00
|
|
|
{
|
|
|
|
|
.pr_type = SOCK_RAW,
|
|
|
|
|
.pr_domain = &inet6domain,
|
|
|
|
|
.pr_flags = PR_ATOMIC|PR_ADDR,
|
|
|
|
|
.pr_input = rip6_input,
|
2014-08-15 02:43:02 +00:00
|
|
|
.pr_output = rip6_output,
|
2005-11-09 13:29:16 +00:00
|
|
|
.pr_ctloutput = rip6_ctloutput,
|
|
|
|
|
.pr_usrreqs = &rip6_usrreqs
|
1999-11-22 02:45:11 +00:00
|
|
|
},
|
|
|
|
|
};
|
|
|
|
|
|
2008-01-08 19:08:58 +00:00
|
|
|
extern int in6_inithead(void **, int);
|
Introduce an infrastructure for dismantling vnet instances.
Vnet modules and protocol domains may now register destructor
functions to clean up and release per-module state. The destructor
mechanisms can be triggered by invoking "vimage -d", or a future
equivalent command which will be provided via the new jail framework.
While this patch introduces numerous placeholder destructor functions,
many of those are currently incomplete, thus leaking memory or (even
worse) failing to stop all running timers. Many of such issues are
already known and will be incrementaly fixed over the next weeks in
smaller incremental commits.
Apart from introducing new fields in structs ifnet, domain, protosw
and vnet_net, which requires the kernel and modules to be rebuilt, this
change should have no impact on nooptions VIMAGE builds, since vnet
destructors can only be called in VIMAGE kernels. Moreover,
destructor functions should be in general compiled in only in
options VIMAGE builds, except for kernel modules which can be safely
kldunloaded at run time.
Bump __FreeBSD_version to 800097.
Reviewed by: bz, julian
Approved by: rwatson, kib (re), julian (mentor)
2009-06-08 17:15:40 +00:00
|
|
|
#ifdef VIMAGE
|
|
|
|
|
extern int in6_detachhead(void **, int);
|
|
|
|
|
#endif
|
1999-11-22 02:45:11 +00:00
|
|
|
|
2005-11-09 13:29:16 +00:00
|
|
|
struct domain inet6domain = {
|
|
|
|
|
.dom_family = AF_INET6,
|
|
|
|
|
.dom_name = "internet6",
|
|
|
|
|
.dom_protosw = (struct protosw *)inet6sw,
|
2016-04-20 16:19:44 +00:00
|
|
|
.dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)],
|
This patch provides the back end support for equal-cost multi-path
(ECMP) for both IPv4 and IPv6. Previously, multipath route insertion
is disallowed. For example,
route add -net 192.103.54.0/24 10.9.44.1
route add -net 192.103.54.0/24 10.9.44.2
The second route insertion will trigger an error message of
"add net 192.103.54.0/24: gateway 10.2.5.2: route already in table"
Multiple default routes can also be inserted. Here is the netstat
output:
default 10.2.5.1 UGS 0 3074 bge0 =>
default 10.2.5.2 UGS 0 0 bge0
When multipath routes exist, the "route delete" command requires
a specific gateway to be specified or else an error message would
be displayed. For example,
route delete default
would fail and trigger the following error message:
"route: writing to routing socket: No such process"
"delete net default: not in table"
On the other hand,
route delete default 10.2.5.2
would be successful: "delete net default: gateway 10.2.5.2"
One does not have to specify a gateway if there is only a single
route for a particular destination.
I need to perform more testings on address aliases and multiple
interfaces that have the same IP prefixes. This patch as it
stands today is not yet ready for prime time. Therefore, the ECMP
code fragments are fully guarded by the RADIX_MPATH macro.
Include the "options RADIX_MPATH" in the kernel configuration
to enable this feature.
Reviewed by: robert, sam, gnn, julian, kmacy
2008-04-13 05:45:14 +00:00
|
|
|
#ifdef RADIX_MPATH
|
|
|
|
|
.dom_rtattach = rn6_mpath_inithead,
|
|
|
|
|
#else
|
2005-11-09 13:29:16 +00:00
|
|
|
.dom_rtattach = in6_inithead,
|
Introduce an infrastructure for dismantling vnet instances.
Vnet modules and protocol domains may now register destructor
functions to clean up and release per-module state. The destructor
mechanisms can be triggered by invoking "vimage -d", or a future
equivalent command which will be provided via the new jail framework.
While this patch introduces numerous placeholder destructor functions,
many of those are currently incomplete, thus leaking memory or (even
worse) failing to stop all running timers. Many of such issues are
already known and will be incrementaly fixed over the next weeks in
smaller incremental commits.
Apart from introducing new fields in structs ifnet, domain, protosw
and vnet_net, which requires the kernel and modules to be rebuilt, this
change should have no impact on nooptions VIMAGE builds, since vnet
destructors can only be called in VIMAGE kernels. Moreover,
destructor functions should be in general compiled in only in
options VIMAGE builds, except for kernel modules which can be safely
kldunloaded at run time.
Bump __FreeBSD_version to 800097.
Reviewed by: bz, julian
Approved by: rwatson, kib (re), julian (mentor)
2009-06-08 17:15:40 +00:00
|
|
|
#endif
|
|
|
|
|
#ifdef VIMAGE
|
|
|
|
|
.dom_rtdetach = in6_detachhead,
|
This patch provides the back end support for equal-cost multi-path
(ECMP) for both IPv4 and IPv6. Previously, multipath route insertion
is disallowed. For example,
route add -net 192.103.54.0/24 10.9.44.1
route add -net 192.103.54.0/24 10.9.44.2
The second route insertion will trigger an error message of
"add net 192.103.54.0/24: gateway 10.2.5.2: route already in table"
Multiple default routes can also be inserted. Here is the netstat
output:
default 10.2.5.1 UGS 0 3074 bge0 =>
default 10.2.5.2 UGS 0 0 bge0
When multipath routes exist, the "route delete" command requires
a specific gateway to be specified or else an error message would
be displayed. For example,
route delete default
would fail and trigger the following error message:
"route: writing to routing socket: No such process"
"delete net default: not in table"
On the other hand,
route delete default 10.2.5.2
would be successful: "delete net default: gateway 10.2.5.2"
One does not have to specify a gateway if there is only a single
route for a particular destination.
I need to perform more testings on address aliases and multiple
interfaces that have the same IP prefixes. This patch as it
stands today is not yet ready for prime time. Therefore, the ECMP
code fragments are fully guarded by the RADIX_MPATH macro.
Include the "options RADIX_MPATH" in the kernel configuration
to enable this feature.
Reviewed by: robert, sam, gnn, julian, kmacy
2008-04-13 05:45:14 +00:00
|
|
|
#endif
|
2005-11-09 13:29:16 +00:00
|
|
|
.dom_ifattach = in6_domifattach,
|
Make checks for rt_mtu generic:
Some virtual if drivers has (ab)used ifa ifa_rtrequest hook to enforce
route MTU to be not bigger that interface MTU. While ifa_rtrequest hooking
might be an option in some situation, it is not feasible to do MTU checks
there: generic (or per-domain) routing code is perfectly capable of doing
this.
We currrently have 3 places where MTU is altered:
1) route addition.
In this case domain overrides radix _addroute callback (in[6]_addroute)
and all necessary checks/fixes are/can be done there.
2) route change (especially, GW change).
In this case, there are no explicit per-domain calls, but one can
override rte by setting ifa_rtrequest hook to domain handler
(inet6 does this).
3) ifconfig ifaceX mtu YYYY
In this case, we have no callbacks, but ip[6]_output performes runtime
checks and decreases rt_mtu if necessary.
Generally, the goals are to be able to handle all MTU changes in
control plane, not in runtime part, and properly deal with increased
interface MTU.
This commit changes the following:
* removes hooks setting MTU from drivers side
* adds proper per-doman MTU checks for case 1)
* adds generic MTU check for case 2)
* The latter is done by using new dom_ifmtu callback since
if_mtu denotes L3 interface MTU, e.g. maximum trasmitted _packet_ size.
However, IPv6 mtu might be different from if_mtu one (e.g. default 1280)
for some cases, so we need an abstract way to know maximum MTU size
for given interface and domain.
* moves rt_setmetrics() before MTU/ifa_rtrequest hooks since it copies
user-supplied data which must be checked.
* removes RT_LOCK_ASSERT() from other ifa_rtrequest hooks to be able to
use this functions on new non-inserted rte.
More changes will follow soon.
MFC after: 1 month
Sponsored by: Yandex LLC
2014-11-06 13:13:09 +00:00
|
|
|
.dom_ifdetach = in6_domifdetach,
|
|
|
|
|
.dom_ifmtu = in6_domifmtu
|
2005-11-09 13:29:16 +00:00
|
|
|
};
|
1999-11-22 02:45:11 +00:00
|
|
|
|
Introduce and use a sysinit-based initialization scheme for virtual
network stacks, VNET_SYSINIT:
- Add VNET_SYSINIT and VNET_SYSUNINIT macros to declare events that will
occur each time a network stack is instantiated and destroyed. In the
!VIMAGE case, these are simply mapped into regular SYSINIT/SYSUNINIT.
For the VIMAGE case, we instead use SYSINIT's to track their order and
properties on registration, using them for each vnet when created/
destroyed, or immediately on module load for already-started vnets.
- Remove vnet_modinfo mechanism that existed to serve this purpose
previously, as well as its dependency scheme: we now just use the
SYSINIT ordering scheme.
- Implement VNET_DOMAIN_SET() to allow protocol domains to declare that
they want init functions to be called for each virtual network stack
rather than just once at boot, compiling down to DOMAIN_SET() in the
non-VIMAGE case.
- Walk all virtualized kernel subsystems and make use of these instead
of modinfo or DOMAIN_SET() for init/uninit events. In some cases,
convert modular components from using modevent to using sysinit (where
appropriate). In some cases, do minor rejuggling of SYSINIT ordering
to make room for or better manage events.
Portions submitted by: jhb (VNET_SYSINIT), bz (cleanup)
Discussed with: jhb, bz, julian, zec
Reviewed by: bz
Approved by: re (VIMAGE blanket)
2009-07-23 20:46:49 +00:00
|
|
|
VNET_DOMAIN_SET(inet6);
|
1999-11-22 02:45:11 +00:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Internet configuration info
|
|
|
|
|
*/
|
2010-04-29 11:52:42 +00:00
|
|
|
#ifndef IPV6FORWARDING
|
|
|
|
|
#ifdef GATEWAY6
|
|
|
|
|
#define IPV6FORWARDING 1 /* forward IP6 packets not for us */
|
|
|
|
|
#else
|
|
|
|
|
#define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */
|
|
|
|
|
#endif /* GATEWAY6 */
|
|
|
|
|
#endif /* !IPV6FORWARDING */
|
|
|
|
|
|
|
|
|
|
#ifndef IPV6_SENDREDIRECTS
|
|
|
|
|
#define IPV6_SENDREDIRECTS 1
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */
|
|
|
|
|
VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS;
|
|
|
|
|
VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM;
|
|
|
|
|
VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS;
|
|
|
|
|
VNET_DEFINE(int, ip6_accept_rtadv) = 0;
|
- Accept Router Advertisement messages even when net.inet6.ip6.forwarding=1.
- A new per-interface knob IFF_ND6_NO_RADR and sysctl IPV6CTL_NO_RADR.
This controls if accepting a route in an RA message as the default route.
The default value for each interface can be set by net.inet6.ip6.no_radr.
The system wide default value is 0.
- A new sysctl: net.inet6.ip6.norbit_raif. This controls if setting R-bit in
NA on RA accepting interfaces. The default is 0 (R-bit is set based on
net.inet6.ip6.forwarding).
Background:
IPv6 host/router model suggests a router sends an RA and a host accepts it for
router discovery. Because of that, KAME implementation does not allow
accepting RAs when net.inet6.ip6.forwarding=1. Accepting RAs on a router can
make the routing table confused since it can change the default router
unintentionally.
However, in practice there are cases where we cannot distinguish a host from
a router clearly. For example, a customer edge router often works as a host
against the ISP, and as a router against the LAN at the same time. Another
example is a complex network configurations like an L2TP tunnel for IPv6
connection to Internet over an Ethernet link with another native IPv6 subnet.
In this case, the physical interface for the native IPv6 subnet works as a
host, and the pseudo-interface for L2TP works as the default IP forwarding
route.
Problem:
Disabling processing RA messages when net.inet6.ip6.forwarding=1 and
accepting them when net.inet6.ip6.forward=0 cause the following practical
issues:
- A router cannot perform SLAAC. It becomes a problem if a box has
multiple interfaces and you want to use SLAAC on some of them, for
example. A customer edge router for IPv6 Internet access service
using an IPv6-over-IPv6 tunnel sometimes needs SLAAC on the
physical interface for administration purpose; updating firmware
and so on (link-local addresses can be used there, but GUAs by
SLAAC are often used for scalability).
- When a host has multiple IPv6 interfaces and it receives multiple RAs on
them, controlling the default route is difficult. Router preferences
defined in RFC 4191 works only when the routers on the links are
under your control.
Details of Implementation Changes:
Router Advertisement messages will be accepted even when
net.inet6.ip6.forwarding=1. More precisely, the conditions are as
follow:
(ACCEPT_RTADV && !NO_RADR && !ip6.forwarding)
=> Normal RA processing on that interface. (as IPv6 host)
(ACCEPT_RTADV && (NO_RADR || ip6.forwarding))
=> Accept RA but add the router to the defroute list with
rtlifetime=0 unconditionally. This effectively prevents
from setting the received router address as the box's
default route.
(!ACCEPT_RTADV)
=> No RA processing on that interface.
ACCEPT_RTADV and NO_RADR are per-interface knob. In short, all interface
are classified as "RA-accepting" or not. An RA-accepting interface always
processes RA messages regardless of ip6.forwarding. The difference caused by
NO_RADR or ip6.forwarding is whether the RA source address is considered as
the default router or not.
R-bit in NA on the RA accepting interfaces is set based on
net.inet6.ip6.forwarding. While RFC 6204 W-1 rule (for CPE case) suggests
a router should disable the R-bit completely even when the box has
net.inet6.ip6.forwarding=1, I believe there is no technical reason with
doing so. This behavior can be set by a new sysctl net.inet6.ip6.norbit_raif
(the default is 0).
Usage:
# ifconfig fxp0 inet6 accept_rtadv
=> accept RA on fxp0
# ifconfig fxp0 inet6 accept_rtadv no_radr
=> accept RA on fxp0 but ignore default route information in it.
# sysctl net.inet6.ip6.norbit_no_radr=1
=> R-bit in NAs on RA accepting interfaces will always be set to 0.
2011-06-06 02:14:23 +00:00
|
|
|
VNET_DEFINE(int, ip6_no_radr) = 0;
|
|
|
|
|
VNET_DEFINE(int, ip6_norbit_raif) = 0;
|
2011-09-13 00:06:11 +00:00
|
|
|
VNET_DEFINE(int, ip6_rfc6204w3) = 0;
|
2010-04-29 11:52:42 +00:00
|
|
|
VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */
|
|
|
|
|
VNET_DEFINE(int, ip6_maxfrags); /* initialized in frag6.c:frag6_init() */
|
|
|
|
|
VNET_DEFINE(int, ip6_log_interval) = 5;
|
|
|
|
|
VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we
|
|
|
|
|
* process? */
|
|
|
|
|
VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */
|
|
|
|
|
VNET_DEFINE(int, ip6_auto_flowlabel) = 1;
|
|
|
|
|
VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr
|
|
|
|
|
* (RFC2462 5.5.4) */
|
|
|
|
|
VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix
|
|
|
|
|
* walk list every 5 sec. */
|
|
|
|
|
VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */
|
|
|
|
|
VNET_DEFINE(int, ip6_v6only) = 1;
|
|
|
|
|
|
|
|
|
|
VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L;
|
|
|
|
|
#ifdef IPSTEALTH
|
|
|
|
|
VNET_DEFINE(int, ip6stealth) = 0;
|
|
|
|
|
#endif
|
|
|
|
|
VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS
|
|
|
|
|
* (RFC 4861) */
|
1999-11-22 02:45:11 +00:00
|
|
|
|
|
|
|
|
/* icmp6 */
|
|
|
|
|
/*
|
|
|
|
|
* BSDI4 defines these variables in in_proto.c...
|
|
|
|
|
* XXX: what if we don't define INET? Should we define pmtu6_expire
|
|
|
|
|
* or so? (jinmei@kame.net 19990310)
|
|
|
|
|
*/
|
2010-04-29 11:52:42 +00:00
|
|
|
VNET_DEFINE(int, pmtu_expire) = 60*10;
|
|
|
|
|
VNET_DEFINE(int, pmtu_probe) = 60*2;
|
1999-11-22 02:45:11 +00:00
|
|
|
|
|
|
|
|
/* ICMPV6 parameters */
|
2010-04-29 11:52:42 +00:00
|
|
|
VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */
|
|
|
|
|
VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */
|
|
|
|
|
VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */
|
2007-05-17 21:20:24 +00:00
|
|
|
/* control how to respond to NI queries */
|
2010-04-29 11:52:42 +00:00
|
|
|
VNET_DEFINE(int, icmp6_nodeinfo) =
|
|
|
|
|
(ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
|
2013-05-04 19:16:26 +00:00
|
|
|
VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1;
|
1999-11-22 02:45:11 +00:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* sysctl related items.
|
|
|
|
|
*/
|
|
|
|
|
SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0,
|
|
|
|
|
"Internet6 Family");
|
|
|
|
|
|
|
|
|
|
/* net.inet6 */
|
|
|
|
|
SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6");
|
|
|
|
|
SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6");
|
|
|
|
|
SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6");
|
|
|
|
|
SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6");
|
2006-11-03 15:23:16 +00:00
|
|
|
#ifdef SCTP
|
|
|
|
|
SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6");
|
|
|
|
|
#endif
|
2017-02-06 08:49:57 +00:00
|
|
|
#if defined(IPSEC) || defined(IPSEC_SUPPORT)
|
1999-11-22 02:45:11 +00:00
|
|
|
SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6");
|
2007-07-03 12:13:45 +00:00
|
|
|
#endif /* IPSEC */
|
1999-11-22 02:45:11 +00:00
|
|
|
|
|
|
|
|
/* net.inet6.ip6 */
|
|
|
|
|
static int
|
2001-06-11 12:39:29 +00:00
|
|
|
sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
|
1999-11-22 02:45:11 +00:00
|
|
|
{
|
2016-05-15 03:18:03 +00:00
|
|
|
int error, val;
|
1999-11-22 02:45:11 +00:00
|
|
|
|
2016-05-15 03:18:03 +00:00
|
|
|
val = V_ip6_temp_preferred_lifetime;
|
|
|
|
|
error = sysctl_handle_int(oidp, &val, 0, req);
|
|
|
|
|
if (error != 0 || !req->newptr)
|
1999-11-22 02:45:11 +00:00
|
|
|
return (error);
|
2016-05-15 03:18:03 +00:00
|
|
|
if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance)
|
2003-10-06 14:02:09 +00:00
|
|
|
return (EINVAL);
|
2016-05-15 03:18:03 +00:00
|
|
|
V_ip6_temp_preferred_lifetime = val;
|
|
|
|
|
return (0);
|
1999-11-22 02:45:11 +00:00
|
|
|
}
|
|
|
|
|
|
2000-07-04 16:35:15 +00:00
|
|
|
static int
|
2001-06-11 12:39:29 +00:00
|
|
|
sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
|
2000-07-04 16:35:15 +00:00
|
|
|
{
|
2016-05-15 03:18:03 +00:00
|
|
|
int error, val;
|
2001-06-11 12:39:29 +00:00
|
|
|
|
2016-05-15 03:18:03 +00:00
|
|
|
val = V_ip6_temp_valid_lifetime;
|
|
|
|
|
error = sysctl_handle_int(oidp, &val, 0, req);
|
|
|
|
|
if (error != 0 || !req->newptr)
|
2000-07-04 16:35:15 +00:00
|
|
|
return (error);
|
2016-05-15 03:18:03 +00:00
|
|
|
if (val < V_ip6_temp_preferred_lifetime)
|
2003-10-06 14:02:09 +00:00
|
|
|
return (EINVAL);
|
2016-05-15 03:18:03 +00:00
|
|
|
V_ip6_temp_valid_lifetime = val;
|
|
|
|
|
return (0);
|
2000-07-04 16:35:15 +00:00
|
|
|
}
|
|
|
|
|
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding,
|
2016-05-15 03:18:03 +00:00
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0,
|
2017-01-16 19:35:19 +00:00
|
|
|
"Enable forwarding of IPv6 packets between interfaces");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect,
|
2016-05-15 03:18:03 +00:00
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0,
|
2017-01-16 19:35:19 +00:00
|
|
|
"Send ICMPv6 redirects for unforwardable IPv6 packets");
|
2016-05-15 03:18:03 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim,
|
|
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0,
|
2017-01-16 19:35:19 +00:00
|
|
|
"Default hop limit to use for outgoing IPv6 packets");
|
2013-07-09 09:54:54 +00:00
|
|
|
SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat,
|
2016-05-15 03:18:03 +00:00
|
|
|
ip6stat,
|
|
|
|
|
"IP6 statistics (struct ip6stat, netinet6/ip6_var.h)");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
|
2016-05-15 03:18:03 +00:00
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0,
|
2017-01-16 19:35:19 +00:00
|
|
|
"Default maximum number of outstanding fragmented IPv6 packets. "
|
|
|
|
|
"A value of 0 means no fragmented packets will be accepted, while a "
|
|
|
|
|
"a value of -1 means no limit");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv,
|
|
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0,
|
2016-05-15 03:18:03 +00:00
|
|
|
"Default value of per-interface flag for accepting ICMPv6 RA messages");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr,
|
|
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0,
|
- Accept Router Advertisement messages even when net.inet6.ip6.forwarding=1.
- A new per-interface knob IFF_ND6_NO_RADR and sysctl IPV6CTL_NO_RADR.
This controls if accepting a route in an RA message as the default route.
The default value for each interface can be set by net.inet6.ip6.no_radr.
The system wide default value is 0.
- A new sysctl: net.inet6.ip6.norbit_raif. This controls if setting R-bit in
NA on RA accepting interfaces. The default is 0 (R-bit is set based on
net.inet6.ip6.forwarding).
Background:
IPv6 host/router model suggests a router sends an RA and a host accepts it for
router discovery. Because of that, KAME implementation does not allow
accepting RAs when net.inet6.ip6.forwarding=1. Accepting RAs on a router can
make the routing table confused since it can change the default router
unintentionally.
However, in practice there are cases where we cannot distinguish a host from
a router clearly. For example, a customer edge router often works as a host
against the ISP, and as a router against the LAN at the same time. Another
example is a complex network configurations like an L2TP tunnel for IPv6
connection to Internet over an Ethernet link with another native IPv6 subnet.
In this case, the physical interface for the native IPv6 subnet works as a
host, and the pseudo-interface for L2TP works as the default IP forwarding
route.
Problem:
Disabling processing RA messages when net.inet6.ip6.forwarding=1 and
accepting them when net.inet6.ip6.forward=0 cause the following practical
issues:
- A router cannot perform SLAAC. It becomes a problem if a box has
multiple interfaces and you want to use SLAAC on some of them, for
example. A customer edge router for IPv6 Internet access service
using an IPv6-over-IPv6 tunnel sometimes needs SLAAC on the
physical interface for administration purpose; updating firmware
and so on (link-local addresses can be used there, but GUAs by
SLAAC are often used for scalability).
- When a host has multiple IPv6 interfaces and it receives multiple RAs on
them, controlling the default route is difficult. Router preferences
defined in RFC 4191 works only when the routers on the links are
under your control.
Details of Implementation Changes:
Router Advertisement messages will be accepted even when
net.inet6.ip6.forwarding=1. More precisely, the conditions are as
follow:
(ACCEPT_RTADV && !NO_RADR && !ip6.forwarding)
=> Normal RA processing on that interface. (as IPv6 host)
(ACCEPT_RTADV && (NO_RADR || ip6.forwarding))
=> Accept RA but add the router to the defroute list with
rtlifetime=0 unconditionally. This effectively prevents
from setting the received router address as the box's
default route.
(!ACCEPT_RTADV)
=> No RA processing on that interface.
ACCEPT_RTADV and NO_RADR are per-interface knob. In short, all interface
are classified as "RA-accepting" or not. An RA-accepting interface always
processes RA messages regardless of ip6.forwarding. The difference caused by
NO_RADR or ip6.forwarding is whether the RA source address is considered as
the default router or not.
R-bit in NA on the RA accepting interfaces is set based on
net.inet6.ip6.forwarding. While RFC 6204 W-1 rule (for CPE case) suggests
a router should disable the R-bit completely even when the box has
net.inet6.ip6.forwarding=1, I believe there is no technical reason with
doing so. This behavior can be set by a new sysctl net.inet6.ip6.norbit_raif
(the default is 0).
Usage:
# ifconfig fxp0 inet6 accept_rtadv
=> accept RA on fxp0
# ifconfig fxp0 inet6 accept_rtadv no_radr
=> accept RA on fxp0 but ignore default route information in it.
# sysctl net.inet6.ip6.norbit_no_radr=1
=> R-bit in NAs on RA accepting interfaces will always be set to 0.
2011-06-06 02:14:23 +00:00
|
|
|
"Default value of per-interface flag to control whether routers "
|
|
|
|
|
"sending ICMPv6 RA messages on that interface are added into the "
|
2016-05-15 03:18:03 +00:00
|
|
|
"default router list");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif,
|
|
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0,
|
2016-05-15 03:18:03 +00:00
|
|
|
"Always set clear the R flag in ICMPv6 NA messages when accepting RA "
|
|
|
|
|
"on the interface");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3,
|
|
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0,
|
2011-09-13 00:06:11 +00:00
|
|
|
"Accept the default router list from ICMPv6 RA messages even "
|
2016-05-15 03:18:03 +00:00
|
|
|
"when packet forwarding is enabled");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval,
|
2016-05-15 03:18:03 +00:00
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0,
|
|
|
|
|
"Frequency in seconds at which to log IPv6 forwarding errors");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit,
|
2016-05-15 03:18:03 +00:00
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0,
|
2017-01-16 19:35:19 +00:00
|
|
|
"Default maximum number of IPv6 extension headers permitted on "
|
|
|
|
|
"incoming IPv6 packets, 0 for no artificial limit");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count,
|
2016-05-15 03:18:03 +00:00
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0,
|
|
|
|
|
"Number of ICMPv6 NS messages sent during duplicate address detection");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel,
|
2016-05-15 03:18:03 +00:00
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0,
|
|
|
|
|
"Provide an IPv6 flowlabel in outbound packets");
|
2014-11-07 09:39:05 +00:00
|
|
|
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim,
|
2016-05-15 03:18:03 +00:00
|
|
|
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0,
|
2017-01-16 19:35:19 +00:00
|
|
|
"Default hop limit for IPv6 multicast packets originating from this "
|
|
|
|
|
"node");
|
Build on Jeff Roberson's linker-set based dynamic per-CPU allocator
(DPCPU), as suggested by Peter Wemm, and implement a new per-virtual
network stack memory allocator. Modify vnet to use the allocator
instead of monolithic global container structures (vinet, ...). This
change solves many binary compatibility problems associated with
VIMAGE, and restores ELF symbols for virtualized global variables.
Each virtualized global variable exists as a "reference copy", and also
once per virtual network stack. Virtualized global variables are
tagged at compile-time, placing the in a special linker set, which is
loaded into a contiguous region of kernel memory. Virtualized global
variables in the base kernel are linked as normal, but those in modules
are copied and relocated to a reserved portion of the kernel's vnet
region with the help of a the kernel linker.
Virtualized global variables exist in per-vnet memory set up when the
network stack instance is created, and are initialized statically from
the reference copy. Run-time access occurs via an accessor macro, which
converts from the current vnet and requested symbol to a per-vnet
address. When "options VIMAGE" is not compiled into the kernel, normal
global ELF symbols will be used instead and indirection is avoided.
This change restores static initialization for network stack global
variables, restores support for non-global symbols and types, eliminates
the need for many subsystem constructors, eliminates large per-subsystem
structures that caused many binary compatibility issues both for
monitoring applications (netstat) and kernel modules, removes the
per-function INIT_VNET_*() macros throughout the stack, eliminates the
need for vnet_symmap ksym(2) munging, and eliminates duplicate
definitions of virtualized globals under VIMAGE_GLOBALS.
Bump __FreeBSD_version and update UPDATING.
Portions submitted by: bz
Reviewed by: bz, zec
Discussed with: gnn, jamie, jeff, jhb, julian, sam
Suggested by: peter
Approved by: re (kensmith)
2009-07-14 22:48:30 +00:00
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SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_RD, __KAME_VERSION, 0,
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"KAME version string");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0,
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"Allow the use of addresses whose preferred lifetimes have expired");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0,
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""); /* XXX unused */
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0,
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"Create RFC3041 temporary addresses for autoconfigured addresses");
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2014-11-07 09:39:05 +00:00
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SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
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CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
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2016-05-15 03:18:03 +00:00
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NULL, 0, sysctl_ip6_temppltime, "I",
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"Maximum preferred lifetime for temporary addresses");
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2014-11-07 09:39:05 +00:00
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SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
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CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
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2016-05-15 03:18:03 +00:00
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NULL, 0, sysctl_ip6_tempvltime, "I",
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"Maximum valid lifetime for temporary addresses");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0,
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"Restrict AF_INET6 sockets to IPv6 addresses only");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal,
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0,
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2016-05-15 03:18:03 +00:00
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"Default value of per-interface flag for automatically adding an IPv6 "
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"link-local address to interfaces when attached");
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2013-07-09 09:54:54 +00:00
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SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats,
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2014-11-07 09:39:05 +00:00
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struct rip6stat, rip6stat,
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"Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)");
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0,
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"Prefer RFC3041 temporary addresses in source address selection");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0,
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"Use the default scope zone when none is specified");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfrags), 0,
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"Maximum allowed number of outstanding IPv6 packet fragments");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0,
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"Enable path MTU discovery for multicast packets");
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2005-08-10 09:13:35 +00:00
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#ifdef IPSTEALTH
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW,
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2016-05-15 03:18:03 +00:00
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&VNET_NAME(ip6stealth), 0,
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"Forward IPv6 packets without decrementing their TTL");
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2005-08-10 09:13:35 +00:00
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#endif
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1999-11-22 02:45:11 +00:00
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/* net.inet6.icmp6 */
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0,
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"Accept ICMPv6 redirect messages");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0,
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""); /* XXX unused */
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2013-07-09 09:54:54 +00:00
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SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats,
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2014-11-07 09:39:05 +00:00
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struct icmp6stat, icmp6stat,
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"ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)");
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0,
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"Frequency in seconds of checks for expired prefixes and routers");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0,
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"Delay in seconds before probing for reachability");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0,
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"Number of ICMPv6 NS messages sent during reachability detection");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0,
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"Number of ICMPv6 NS messages sent during address resolution");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0,
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"Create a loopback route when configuring an IPv6 address");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0,
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"Mask of enabled RF4620 node information query types");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX,
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nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW,
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2016-05-15 03:18:03 +00:00
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&VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0,
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"Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup "
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"for compatibility with KAME implementation");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0,
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"Maximum number of ICMPv6 error messages per second");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0,
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""); /* XXX unused */
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug,
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2016-05-15 03:18:03 +00:00
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CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0,
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"Log NDP debug messages");
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2014-11-07 09:39:05 +00:00
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SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
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nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(nd6_onlink_ns_rfc4861), 0,
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2016-05-15 03:18:03 +00:00
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"Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861");
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