2005-01-07 01:45:51 +00:00
|
|
|
/*-a
|
1994-05-24 10:09:53 +00:00
|
|
|
* Copyright (c) 1988 Stephen Deering.
|
|
|
|
* Copyright (c) 1992, 1993
|
|
|
|
* The Regents of the University of California. All rights reserved.
|
|
|
|
*
|
|
|
|
* This code is derived from software contributed to Berkeley by
|
|
|
|
* Stephen Deering of Stanford University.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
|
|
* may be used to endorse or promote products derived from this software
|
|
|
|
* without specific prior written permission.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
* SUCH DAMAGE.
|
|
|
|
*
|
1999-03-06 04:51:41 +00:00
|
|
|
* from: @(#)igmp_var.h 8.1 (Berkeley) 7/19/93
|
1999-08-28 01:08:13 +00:00
|
|
|
* $FreeBSD$
|
1994-05-24 10:09:53 +00:00
|
|
|
*/
|
|
|
|
|
1994-08-21 05:27:42 +00:00
|
|
|
#ifndef _NETINET_IGMP_VAR_H_
|
|
|
|
#define _NETINET_IGMP_VAR_H_
|
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
* Internet Group Management Protocol (IGMP),
|
|
|
|
* implementation-specific definitions.
|
|
|
|
*
|
|
|
|
* Written by Steve Deering, Stanford, May 1988.
|
|
|
|
*
|
1996-03-14 16:59:20 +00:00
|
|
|
* MULTICAST Revision: 3.5.1.3
|
1994-05-24 10:09:53 +00:00
|
|
|
*/
|
|
|
|
|
2009-03-09 17:53:05 +00:00
|
|
|
#ifndef BURN_BRIDGES
|
|
|
|
/*
|
|
|
|
* Pre-IGMPV3 igmpstat structure.
|
|
|
|
*/
|
|
|
|
struct oigmpstat {
|
|
|
|
u_int igps_rcv_total; /* total IGMP messages received */
|
|
|
|
u_int igps_rcv_tooshort; /* received with too few bytes */
|
|
|
|
u_int igps_rcv_badsum; /* received with bad checksum */
|
|
|
|
u_int igps_rcv_queries; /* received membership queries */
|
|
|
|
u_int igps_rcv_badqueries; /* received invalid queries */
|
|
|
|
u_int igps_rcv_reports; /* received membership reports */
|
|
|
|
u_int igps_rcv_badreports; /* received invalid reports */
|
|
|
|
u_int igps_rcv_ourreports; /* received reports for our groups */
|
|
|
|
u_int igps_snd_reports; /* sent membership reports */
|
|
|
|
u_int igps_rcv_toolong; /* received with too many bytes */
|
|
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* IGMPv3 protocol statistics.
|
|
|
|
*/
|
1994-05-24 10:09:53 +00:00
|
|
|
struct igmpstat {
|
2009-03-09 17:53:05 +00:00
|
|
|
/*
|
|
|
|
* Structure header (to insulate ABI changes).
|
|
|
|
*/
|
|
|
|
uint32_t igps_version; /* version of this structure */
|
|
|
|
uint32_t igps_len; /* length of this structure */
|
|
|
|
/*
|
|
|
|
* Message statistics.
|
|
|
|
*/
|
|
|
|
uint64_t igps_rcv_total; /* total IGMP messages received */
|
|
|
|
uint64_t igps_rcv_tooshort; /* received with too few bytes */
|
|
|
|
uint64_t igps_rcv_badttl; /* received with ttl other than 1 */
|
|
|
|
uint64_t igps_rcv_badsum; /* received with bad checksum */
|
|
|
|
/*
|
|
|
|
* Query statistics.
|
|
|
|
*/
|
|
|
|
uint64_t igps_rcv_v1v2_queries; /* received IGMPv1/IGMPv2 queries */
|
|
|
|
uint64_t igps_rcv_v3_queries; /* received IGMPv3 queries */
|
|
|
|
uint64_t igps_rcv_badqueries; /* received invalid queries */
|
|
|
|
uint64_t igps_rcv_gen_queries; /* received general queries */
|
|
|
|
uint64_t igps_rcv_group_queries;/* received group queries */
|
|
|
|
uint64_t igps_rcv_gsr_queries; /* received group-source queries */
|
|
|
|
uint64_t igps_drop_gsr_queries; /* dropped group-source queries */
|
|
|
|
/*
|
|
|
|
* Report statistics.
|
|
|
|
*/
|
|
|
|
uint64_t igps_rcv_reports; /* received membership reports */
|
|
|
|
uint64_t igps_rcv_badreports; /* received invalid reports */
|
|
|
|
uint64_t igps_rcv_ourreports; /* received reports for our groups */
|
|
|
|
uint64_t igps_rcv_nora; /* received w/o Router Alert option */
|
|
|
|
uint64_t igps_snd_reports; /* sent membership reports */
|
|
|
|
/*
|
|
|
|
* Padding for future additions.
|
|
|
|
*/
|
|
|
|
uint64_t __igps_pad[4];
|
1994-05-24 10:09:53 +00:00
|
|
|
};
|
2009-03-09 17:53:05 +00:00
|
|
|
#define IGPS_VERSION_3 3 /* as of FreeBSD 8.x */
|
|
|
|
#define IGPS_VERSION3_LEN 168
|
|
|
|
|
2009-04-12 13:41:13 +00:00
|
|
|
#ifdef _KERNEL
|
|
|
|
#define IGMPSTAT_ADD(name, val) V_igmpstat.name += (val)
|
|
|
|
#define IGMPSTAT_INC(name) IGMPSTAT_ADD(name, 1)
|
|
|
|
#endif
|
|
|
|
|
2009-03-09 17:53:05 +00:00
|
|
|
#ifdef CTASSERT
|
|
|
|
CTASSERT(sizeof(struct igmpstat) == 168);
|
|
|
|
#endif
|
1994-05-24 10:09:53 +00:00
|
|
|
|
1999-12-29 04:46:21 +00:00
|
|
|
#ifdef _KERNEL
|
1994-09-06 22:42:31 +00:00
|
|
|
#define IGMP_RANDOM_DELAY(X) (random() % (X) + 1)
|
1994-05-24 10:09:53 +00:00
|
|
|
|
2009-03-09 17:53:05 +00:00
|
|
|
#define IGMP_MAX_STATE_CHANGES 24 /* Max pending changes per group */
|
1996-03-14 16:59:20 +00:00
|
|
|
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
/*
|
2009-03-09 17:53:05 +00:00
|
|
|
* IGMP per-group states.
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
*/
|
2009-03-09 17:53:05 +00:00
|
|
|
#define IGMP_NOT_MEMBER 0 /* Can garbage collect in_multi */
|
|
|
|
#define IGMP_SILENT_MEMBER 1 /* Do not perform IGMP for group */
|
|
|
|
#define IGMP_REPORTING_MEMBER 2 /* IGMPv1/2/3 we are reporter */
|
|
|
|
#define IGMP_IDLE_MEMBER 3 /* IGMPv1/2 we reported last */
|
|
|
|
#define IGMP_LAZY_MEMBER 4 /* IGMPv1/2 other member reporting */
|
|
|
|
#define IGMP_SLEEPING_MEMBER 5 /* IGMPv1/2 start query response */
|
|
|
|
#define IGMP_AWAKENING_MEMBER 6 /* IGMPv1/2 group timer will start */
|
|
|
|
#define IGMP_G_QUERY_PENDING_MEMBER 7 /* IGMPv3 group query pending */
|
|
|
|
#define IGMP_SG_QUERY_PENDING_MEMBER 8 /* IGMPv3 source query pending */
|
|
|
|
#define IGMP_LEAVING_MEMBER 9 /* IGMPv3 dying gasp (pending last */
|
|
|
|
/* retransmission of INCLUDE {}) */
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
|
1996-03-14 16:59:20 +00:00
|
|
|
/*
|
2009-03-09 17:53:05 +00:00
|
|
|
* IGMP version tag.
|
1996-03-14 16:59:20 +00:00
|
|
|
*/
|
2009-03-09 17:53:05 +00:00
|
|
|
#define IGMP_VERSION_NONE 0 /* Invalid */
|
|
|
|
#define IGMP_VERSION_1 1
|
|
|
|
#define IGMP_VERSION_2 2
|
|
|
|
#define IGMP_VERSION_3 3 /* Default */
|
1996-03-14 16:59:20 +00:00
|
|
|
|
|
|
|
/*
|
2009-03-09 17:53:05 +00:00
|
|
|
* IGMPv3 protocol control variables.
|
1996-03-14 16:59:20 +00:00
|
|
|
*/
|
2009-03-09 17:53:05 +00:00
|
|
|
#define IGMP_RV_INIT 2 /* Robustness Variable */
|
|
|
|
#define IGMP_RV_MIN 1
|
|
|
|
#define IGMP_RV_MAX 7
|
1996-03-14 16:59:20 +00:00
|
|
|
|
2009-03-09 17:53:05 +00:00
|
|
|
#define IGMP_QI_INIT 125 /* Query Interval (s) */
|
|
|
|
#define IGMP_QI_MIN 1
|
|
|
|
#define IGMP_QI_MAX 255
|
|
|
|
|
|
|
|
#define IGMP_QRI_INIT 10 /* Query Response Interval (s) */
|
|
|
|
#define IGMP_QRI_MIN 1
|
|
|
|
#define IGMP_QRI_MAX 255
|
|
|
|
|
|
|
|
#define IGMP_URI_INIT 3 /* Unsolicited Report Interval (s) */
|
|
|
|
#define IGMP_URI_MIN 0
|
|
|
|
#define IGMP_URI_MAX 10
|
|
|
|
|
|
|
|
#define IGMP_MAX_G_GS_PACKETS 8 /* # of packets to answer G/GS */
|
|
|
|
#define IGMP_MAX_STATE_CHANGE_PACKETS 8 /* # of packets per state change */
|
|
|
|
#define IGMP_MAX_RESPONSE_PACKETS 16 /* # of packets for general query */
|
|
|
|
#define IGMP_MAX_RESPONSE_BURST 4 /* # of responses to send at once */
|
|
|
|
#define IGMP_RESPONSE_BURST_INTERVAL (PR_FASTHZ / 2) /* 500ms */
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
|
|
|
|
/*
|
2009-03-09 17:53:05 +00:00
|
|
|
* IGMP-specific mbuf flags.
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
*/
|
2009-03-09 17:53:05 +00:00
|
|
|
#define M_IGMPV2 M_PROTO1 /* Packet is IGMPv2 */
|
|
|
|
#define M_IGMPV3_HDR M_PROTO2 /* Packet has IGMPv3 headers */
|
|
|
|
#define M_GROUPREC M_PROTO3 /* mbuf chain is a group record */
|
|
|
|
#define M_IGMP_LOOP M_PROTO4 /* transmit on loif, not real ifp */
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
|
|
|
|
/*
|
2009-03-09 17:53:05 +00:00
|
|
|
* Default amount of leading space for IGMPv3 to allocate at the
|
|
|
|
* beginning of its mbuf packet chains, to avoid fragmentation and
|
|
|
|
* unnecessary allocation of leading mbufs.
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
*/
|
2009-03-09 17:53:05 +00:00
|
|
|
#define RAOPT_LEN 4 /* Length of IP Router Alert option */
|
|
|
|
#define IGMP_LEADINGSPACE \
|
|
|
|
(sizeof(struct ip) + RAOPT_LEN + sizeof(struct igmp_report))
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
|
|
|
|
/*
|
2009-03-09 17:53:05 +00:00
|
|
|
* Subsystem lock macros.
|
|
|
|
* The IGMP lock is only taken with IGMP. Currently it is system-wide.
|
|
|
|
* VIMAGE: The lock could be pushed to per-VIMAGE granularity in future.
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
*/
|
2009-03-09 17:53:05 +00:00
|
|
|
#define IGMP_LOCK_INIT() mtx_init(&igmp_mtx, "igmp_mtx", NULL, MTX_DEF)
|
|
|
|
#define IGMP_LOCK_DESTROY() mtx_destroy(&igmp_mtx)
|
|
|
|
#define IGMP_LOCK() mtx_lock(&igmp_mtx)
|
|
|
|
#define IGMP_LOCK_ASSERT() mtx_assert(&igmp_mtx, MA_OWNED)
|
|
|
|
#define IGMP_UNLOCK() mtx_unlock(&igmp_mtx)
|
|
|
|
#define IGMP_UNLOCK_ASSERT() mtx_assert(&igmp_mtx, MA_NOTOWNED)
|
Import rewrite of IPv4 socket multicast layer to support source-specific
and protocol-independent host mode multicast. The code is written to
accomodate IPv6, IGMPv3 and MLDv2 with only a little additional work.
This change only pertains to FreeBSD's use as a multicast end-station and
does not concern multicast routing; for an IGMPv3/MLDv2 router
implementation, consider the XORP project.
The work is based on Wilbert de Graaf's IGMPv3 code drop for FreeBSD 4.6,
which is available at: http://www.kloosterhof.com/wilbert/igmpv3.html
Summary
* IPv4 multicast socket processing is now moved out of ip_output.c
into a new module, in_mcast.c.
* The in_mcast.c module implements the IPv4 legacy any-source API in
terms of the protocol-independent source-specific API.
* Source filters are lazy allocated as the common case does not use them.
They are part of per inpcb state and are covered by the inpcb lock.
* struct ip_mreqn is now supported to allow applications to specify
multicast joins by interface index in the legacy IPv4 any-source API.
* In UDP, an incoming multicast datagram only requires that the source
port matches the 4-tuple if the socket was already bound by source port.
An unbound socket SHOULD be able to receive multicasts sent from an
ephemeral source port.
* The UDP socket multicast filter mode defaults to exclusive, that is,
sources present in the per-socket list will be blocked from delivery.
* The RFC 3678 userland functions have been added to libc: setsourcefilter,
getsourcefilter, setipv4sourcefilter, getipv4sourcefilter.
* Definitions for IGMPv3 are merged but not yet used.
* struct sockaddr_storage is now referenced from <netinet/in.h>. It
is therefore defined there if not already declared in the same way
as for the C99 types.
* The RFC 1724 hack (specify 0.0.0.0/8 addresses to IP_MULTICAST_IF
which are then interpreted as interface indexes) is now deprecated.
* A patch for the Rhyolite.com routed in the FreeBSD base system
is available in the -net archives. This only affects individuals
running RIPv1 or RIPv2 via point-to-point and/or unnumbered interfaces.
* Make IPv6 detach path similar to IPv4's in code flow; functionally same.
* Bump __FreeBSD_version to 700048; see UPDATING.
This work was financially supported by another FreeBSD committer.
Obtained from: p4://bms_netdev
Submitted by: Wilbert de Graaf (original work)
Reviewed by: rwatson (locking), silence from fenner,
net@ (but with encouragement)
2007-06-12 16:24:56 +00:00
|
|
|
|
2009-03-09 17:53:05 +00:00
|
|
|
struct igmp_ifinfo;
|
|
|
|
|
|
|
|
int igmp_change_state(struct in_multi *);
|
2002-03-19 21:25:46 +00:00
|
|
|
void igmp_fasttimo(void);
|
2009-03-09 17:53:05 +00:00
|
|
|
struct igmp_ifinfo *
|
|
|
|
igmp_domifattach(struct ifnet *);
|
|
|
|
void igmp_domifdetach(struct ifnet *);
|
|
|
|
void igmp_ifdetach(struct ifnet *);
|
|
|
|
void igmp_input(struct mbuf *, int);
|
2002-03-19 21:25:46 +00:00
|
|
|
void igmp_slowtimo(void);
|
1999-03-06 04:51:41 +00:00
|
|
|
|
|
|
|
SYSCTL_DECL(_net_inet_igmp);
|
|
|
|
|
2009-03-09 17:53:05 +00:00
|
|
|
#endif /* _KERNEL */
|
1994-08-21 05:27:42 +00:00
|
|
|
|
1995-02-16 00:27:47 +00:00
|
|
|
/*
|
|
|
|
* Names for IGMP sysctl objects
|
|
|
|
*/
|
|
|
|
#define IGMPCTL_STATS 1 /* statistics (read-only) */
|
|
|
|
#define IGMPCTL_MAXID 2
|
|
|
|
|
1994-08-21 05:27:42 +00:00
|
|
|
#endif
|