2005-01-07 01:45:51 +00:00
|
|
|
/*-
|
1994-05-24 10:09:53 +00:00
|
|
|
* Copyright (c) 1982, 1986, 1993
|
|
|
|
|
* The Regents of the University of California. All rights reserved.
|
|
|
|
|
*
|
|
|
|
|
* 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.
|
|
|
|
|
*
|
1995-09-21 18:04:43 +00:00
|
|
|
* @(#)ip_var.h 8.2 (Berkeley) 1/9/95
|
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_IP_VAR_H_
|
1996-10-15 16:54:47 +00:00
|
|
|
#define _NETINET_IP_VAR_H_
|
1994-08-21 05:27:42 +00:00
|
|
|
|
2001-06-11 12:39:29 +00:00
|
|
|
#include <sys/queue.h>
|
|
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
|
* Overlay for ip header used by other protocols (tcp, udp).
|
|
|
|
|
*/
|
|
|
|
|
struct ipovly {
|
1998-08-24 07:47:39 +00:00
|
|
|
u_char ih_x1[9]; /* (unused) */
|
1994-05-24 10:09:53 +00:00
|
|
|
u_char ih_pr; /* protocol */
|
1996-10-25 17:57:53 +00:00
|
|
|
u_short ih_len; /* protocol length */
|
1994-05-24 10:09:53 +00:00
|
|
|
struct in_addr ih_src; /* source internet address */
|
|
|
|
|
struct in_addr ih_dst; /* destination internet address */
|
|
|
|
|
};
|
|
|
|
|
|
2002-07-20 22:46:20 +00:00
|
|
|
#ifdef _KERNEL
|
1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
|
* Ip reassembly queue structure. Each fragment
|
|
|
|
|
* being reassembled is attached to one of these structures.
|
|
|
|
|
* They are timed out after ipq_ttl drops to 0, and may also
|
|
|
|
|
* be reclaimed if memory becomes tight.
|
|
|
|
|
*/
|
|
|
|
|
struct ipq {
|
2001-03-16 20:00:53 +00:00
|
|
|
TAILQ_ENTRY(ipq) ipq_list; /* to other reass headers */
|
1994-05-24 10:09:53 +00:00
|
|
|
u_char ipq_ttl; /* time for reass q to live */
|
|
|
|
|
u_char ipq_p; /* protocol of this fragment */
|
|
|
|
|
u_short ipq_id; /* sequence id for reassembly */
|
1998-08-24 07:47:39 +00:00
|
|
|
struct mbuf *ipq_frags; /* to ip headers of fragments */
|
1994-05-24 10:09:53 +00:00
|
|
|
struct in_addr ipq_src,ipq_dst;
|
2003-02-22 06:41:47 +00:00
|
|
|
u_char ipq_nfrags; /* # frags in this packet */
|
2007-04-04 15:30:31 +00:00
|
|
|
struct label *ipq_label; /* MAC label */
|
1994-05-24 10:09:53 +00:00
|
|
|
};
|
2002-07-20 22:46:20 +00:00
|
|
|
#endif /* _KERNEL */
|
1994-05-24 10:09:53 +00:00
|
|
|
|
2005-11-19 14:01:32 +00:00
|
|
|
/*
|
|
|
|
|
* Structure stored in mbuf in inpcb.ip_options
|
|
|
|
|
* and passed to ip_output when ip options are in use.
|
|
|
|
|
* The actual length of the options (including ipopt_dst)
|
|
|
|
|
* is in m_len.
|
|
|
|
|
*/
|
|
|
|
|
#define MAX_IPOPTLEN 40
|
|
|
|
|
|
|
|
|
|
struct ipoption {
|
|
|
|
|
struct in_addr ipopt_dst; /* first-hop dst if source routed */
|
|
|
|
|
char ipopt_list[MAX_IPOPTLEN]; /* options proper */
|
|
|
|
|
};
|
|
|
|
|
|
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
|
|
|
/*
|
|
|
|
|
* Multicast source list entry.
|
|
|
|
|
*/
|
|
|
|
|
struct in_msource {
|
|
|
|
|
TAILQ_ENTRY(in_msource) ims_next; /* next source */
|
|
|
|
|
struct sockaddr_storage ims_addr; /* address of this source */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Multicast filter descriptor; there is one instance per group membership
|
|
|
|
|
* on a socket, allocated as an expandable vector hung off ip_moptions.
|
|
|
|
|
* struct in_multi contains separate IPv4-stack-wide state for IGMPv3.
|
|
|
|
|
*/
|
|
|
|
|
struct in_mfilter {
|
|
|
|
|
uint16_t imf_fmode; /* filter mode for this socket/group */
|
|
|
|
|
uint16_t imf_nsources; /* # of sources for this socket/group */
|
|
|
|
|
TAILQ_HEAD(, in_msource) imf_sources; /* source list */
|
|
|
|
|
};
|
|
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
/*
|
|
|
|
|
* Structure attached to inpcb.ip_moptions and
|
|
|
|
|
* passed to ip_output when IP multicast options are in use.
|
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
|
|
|
* This structure is lazy-allocated.
|
1994-05-24 10:09:53 +00:00
|
|
|
*/
|
|
|
|
|
struct ip_moptions {
|
|
|
|
|
struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */
|
2001-06-11 12:39:29 +00:00
|
|
|
struct in_addr imo_multicast_addr; /* ifindex/addr on MULTICAST_IF */
|
2006-05-14 14:22:49 +00:00
|
|
|
u_long imo_multicast_vif; /* vif num outgoing multicasts */
|
1994-05-24 10:09:53 +00:00
|
|
|
u_char imo_multicast_ttl; /* TTL for outgoing multicasts */
|
|
|
|
|
u_char imo_multicast_loop; /* 1 => hear sends if a member */
|
|
|
|
|
u_short imo_num_memberships; /* no. memberships this socket */
|
2006-05-14 14:22:49 +00:00
|
|
|
u_short imo_max_memberships; /* max memberships this socket */
|
|
|
|
|
struct in_multi **imo_membership; /* group memberships */
|
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
|
|
|
struct in_mfilter *imo_mfilters; /* source filters */
|
1994-05-24 10:09:53 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
struct ipstat {
|
|
|
|
|
u_long ips_total; /* total packets received */
|
|
|
|
|
u_long ips_badsum; /* checksum bad */
|
|
|
|
|
u_long ips_tooshort; /* packet too short */
|
|
|
|
|
u_long ips_toosmall; /* not enough data */
|
|
|
|
|
u_long ips_badhlen; /* ip header length < data size */
|
|
|
|
|
u_long ips_badlen; /* ip length < ip header length */
|
|
|
|
|
u_long ips_fragments; /* fragments received */
|
|
|
|
|
u_long ips_fragdropped; /* frags dropped (dups, out of space) */
|
|
|
|
|
u_long ips_fragtimeout; /* fragments timed out */
|
|
|
|
|
u_long ips_forward; /* packets forwarded */
|
1998-05-19 14:04:36 +00:00
|
|
|
u_long ips_fastforward; /* packets fast forwarded */
|
1994-05-24 10:09:53 +00:00
|
|
|
u_long ips_cantforward; /* packets rcvd for unreachable dest */
|
|
|
|
|
u_long ips_redirectsent; /* packets forwarded on same net */
|
|
|
|
|
u_long ips_noproto; /* unknown or unsupported protocol */
|
|
|
|
|
u_long ips_delivered; /* datagrams delivered to upper level*/
|
|
|
|
|
u_long ips_localout; /* total ip packets generated here */
|
|
|
|
|
u_long ips_odropped; /* lost packets due to nobufs, etc. */
|
|
|
|
|
u_long ips_reassembled; /* total packets reassembled ok */
|
1996-01-30 23:02:38 +00:00
|
|
|
u_long ips_fragmented; /* datagrams successfully fragmented */
|
1994-05-24 10:09:53 +00:00
|
|
|
u_long ips_ofragments; /* output fragments created */
|
|
|
|
|
u_long ips_cantfrag; /* don't fragment flag was set, etc. */
|
|
|
|
|
u_long ips_badoptions; /* error in option processing */
|
|
|
|
|
u_long ips_noroute; /* packets discarded due to no route */
|
|
|
|
|
u_long ips_badvers; /* ip version != 4 */
|
|
|
|
|
u_long ips_rawout; /* total raw ip packets generated */
|
1996-10-25 17:57:53 +00:00
|
|
|
u_long ips_toolong; /* ip length > max ip packet size */
|
1997-01-21 21:08:09 +00:00
|
|
|
u_long ips_notmember; /* multicasts for unregistered grps */
|
1999-11-05 14:41:39 +00:00
|
|
|
u_long ips_nogif; /* no match gif found */
|
2001-06-11 12:39:29 +00:00
|
|
|
u_long ips_badaddr; /* invalid address on header */
|
1994-05-24 10:09:53 +00:00
|
|
|
};
|
|
|
|
|
|
1999-12-29 04:46:21 +00:00
|
|
|
#ifdef _KERNEL
|
1998-07-13 12:20:07 +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
|
|
|
/* flags passed to ip_output as last parameter */
|
|
|
|
|
#define IP_FORWARDING 0x1 /* most of ip header exists */
|
|
|
|
|
#define IP_RAWOUTPUT 0x2 /* raw ip header exists */
|
|
|
|
|
#define IP_SENDONES 0x4 /* send all-ones broadcast */
|
|
|
|
|
#define IP_SENDTOIF 0x8 /* send on specific ifnet */
|
2007-04-04 15:30:31 +00:00
|
|
|
#define IP_ROUTETOIF SO_DONTROUTE /* 0x10 bypass routing tables */
|
|
|
|
|
#define IP_ALLOWBROADCAST SO_BROADCAST /* 0x20 can send broadcast packets */
|
1994-05-24 10:09:53 +00:00
|
|
|
|
2007-04-04 15:30:31 +00:00
|
|
|
/*
|
|
|
|
|
* mbuf flag used by ip_fastfwd
|
|
|
|
|
*/
|
2004-02-25 19:55:29 +00:00
|
|
|
#define M_FASTFWD_OURS M_PROTO1 /* changed dst to local */
|
|
|
|
|
|
2005-07-02 23:13:31 +00:00
|
|
|
#ifdef __NO_STRICT_ALIGNMENT
|
|
|
|
|
#define IP_HDR_ALIGNED_P(ip) 1
|
|
|
|
|
#else
|
|
|
|
|
#define IP_HDR_ALIGNED_P(ip) ((((intptr_t) (ip)) & 3) == 0)
|
|
|
|
|
#endif
|
|
|
|
|
|
1998-08-23 03:07:17 +00:00
|
|
|
struct ip;
|
1996-11-12 10:02:09 +00:00
|
|
|
struct inpcb;
|
1996-10-15 16:54:47 +00:00
|
|
|
struct route;
|
1998-08-23 03:07:17 +00:00
|
|
|
struct sockopt;
|
1996-10-15 16:54:47 +00:00
|
|
|
|
1994-08-18 22:36:09 +00:00
|
|
|
extern struct ipstat ipstat;
|
2007-04-04 15:30:31 +00:00
|
|
|
extern u_short ip_id; /* ip packet ctr, for ids */
|
|
|
|
|
extern int ip_defttl; /* default IP ttl */
|
|
|
|
|
extern int ipforwarding; /* ip forwarding */
|
2003-11-15 01:45:56 +00:00
|
|
|
#ifdef IPSTEALTH
|
2007-04-04 15:30:31 +00:00
|
|
|
extern int ipstealth; /* stealth forwarding */
|
2003-11-15 01:45:56 +00:00
|
|
|
#endif
|
1995-03-16 18:17:34 +00:00
|
|
|
extern u_char ip_protox[];
|
2007-04-04 15:30:31 +00:00
|
|
|
extern struct socket *ip_rsvpd; /* reservation protocol daemon */
|
|
|
|
|
extern struct socket *ip_mrouter; /* multicast routing daemon */
|
2002-03-19 21:25:46 +00:00
|
|
|
extern int (*legal_vif_num)(int);
|
|
|
|
|
extern u_long (*ip_mcast_src)(int);
|
1995-07-26 18:05:16 +00:00
|
|
|
extern int rsvp_on;
|
1997-02-18 20:46:36 +00:00
|
|
|
extern struct pr_usrreqs rip_usrreqs;
|
1994-05-24 10:09:53 +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
|
|
|
void inp_freemoptions(struct ip_moptions *);
|
|
|
|
|
int inp_getmoptions(struct inpcb *, struct sockopt *);
|
|
|
|
|
int inp_setmoptions(struct inpcb *, struct sockopt *);
|
|
|
|
|
|
2007-04-04 15:30:31 +00:00
|
|
|
int ip_ctloutput(struct socket *, struct sockopt *sopt);
|
|
|
|
|
void ip_drain(void);
|
|
|
|
|
void ip_fini(void *xtp);
|
|
|
|
|
int ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu,
|
2003-08-07 18:16:59 +00:00
|
|
|
u_long if_hwassist_flags, int sw_csum);
|
2007-04-04 15:30:31 +00:00
|
|
|
void ip_forward(struct mbuf *m, int srcrt);
|
|
|
|
|
void ip_init(void);
|
|
|
|
|
extern int
|
|
|
|
|
(*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *,
|
|
|
|
|
struct ip_moptions *);
|
|
|
|
|
int ip_output(struct mbuf *,
|
2002-10-16 01:54:46 +00:00
|
|
|
struct mbuf *, struct route *, int, struct ip_moptions *,
|
|
|
|
|
struct inpcb *);
|
2007-04-04 15:30:31 +00:00
|
|
|
int ipproto_register(u_char);
|
|
|
|
|
int ipproto_unregister(u_char);
|
2004-08-17 22:05:54 +00:00
|
|
|
struct mbuf *
|
2007-04-04 15:30:31 +00:00
|
|
|
ip_reass(struct mbuf *);
|
2001-11-30 10:40:28 +00:00
|
|
|
struct in_ifaddr *
|
2007-04-04 15:30:31 +00:00
|
|
|
ip_rtaddr(struct in_addr);
|
|
|
|
|
void ip_savecontrol(struct inpcb *, struct mbuf **, struct ip *,
|
|
|
|
|
struct mbuf *);
|
|
|
|
|
void ip_slowtimo(void);
|
2004-08-14 15:32:40 +00:00
|
|
|
u_int16_t ip_randomid(void);
|
2002-06-23 09:03:42 +00:00
|
|
|
int rip_ctloutput(struct socket *, struct sockopt *);
|
|
|
|
|
void rip_ctlinput(int, struct sockaddr *, void *);
|
|
|
|
|
void rip_init(void);
|
|
|
|
|
void rip_input(struct mbuf *, int);
|
|
|
|
|
int rip_output(struct mbuf *, struct socket *, u_long);
|
2002-03-19 21:25:46 +00:00
|
|
|
void ipip_input(struct mbuf *, int);
|
|
|
|
|
void rsvp_input(struct mbuf *, int);
|
|
|
|
|
int ip_rsvp_init(struct socket *);
|
|
|
|
|
int ip_rsvp_done(void);
|
Massive cleanup of the ip_mroute code.
No functional changes, but:
+ the mrouting module now should behave the same as the compiled-in
version (it did not before, some of the rsvp code was not loaded
properly);
+ netinet/ip_mroute.c is now truly optional;
+ removed some redundant/unused code;
+ changed many instances of '0' to NULL and INADDR_ANY as appropriate;
+ removed several static variables to make the code more SMP-friendly;
+ fixed some minor bugs in the mrouting code (mostly, incorrect return
values from functions).
This commit is also a prerequisite to the addition of support for PIM,
which i would like to put in before DP2 (it does not change any of
the existing APIs, anyways).
Note, in the process we found out that some device drivers fail to
properly handle changes in IFF_ALLMULTI, leading to interesting
behaviour when a multicast router is started. This bug is not
corrected by this commit, and will be fixed with a separate commit.
Detailed changes:
--------------------
netinet/ip_mroute.c all the above.
conf/files make ip_mroute.c optional
net/route.c fix mrt_ioctl hook
netinet/ip_input.c fix ip_mforward hook, move rsvp_input() here
together with other rsvp code, and a couple
of indentation fixes.
netinet/ip_output.c fix ip_mforward and ip_mcast_src hooks
netinet/ip_var.h rsvp function hooks
netinet/raw_ip.c hooks for mrouting and rsvp functions, plus
interface cleanup.
netinet/ip_mroute.h remove an unused and optional field from a struct
Most of the code is from Pavlin Radoslavov and the XORP project
Reviewed by: sam
MFC after: 1 week
2002-11-15 22:53:53 +00:00
|
|
|
extern int (*ip_rsvp_vif)(struct socket *, struct sockopt *);
|
|
|
|
|
extern void (*ip_rsvp_force_done)(struct socket *);
|
|
|
|
|
extern void (*rsvp_input_p)(struct mbuf *m, int off);
|
|
|
|
|
|
2004-08-27 15:16:24 +00:00
|
|
|
extern struct pfil_head inet_pfil_hook; /* packet filter hooks */
|
2003-09-23 17:54:04 +00:00
|
|
|
|
2000-05-21 21:26:06 +00:00
|
|
|
void in_delayed_cksum(struct mbuf *m);
|
|
|
|
|
|
2004-08-14 15:32:40 +00:00
|
|
|
static __inline uint16_t ip_newid(void);
|
|
|
|
|
extern int ip_do_randomid;
|
|
|
|
|
|
|
|
|
|
static __inline uint16_t
|
|
|
|
|
ip_newid(void)
|
|
|
|
|
{
|
|
|
|
|
if (ip_do_randomid)
|
|
|
|
|
return ip_randomid();
|
|
|
|
|
|
|
|
|
|
return htons(ip_id++);
|
|
|
|
|
}
|
|
|
|
|
|
1999-12-29 04:46:21 +00:00
|
|
|
#endif /* _KERNEL */
|
1994-08-21 05:27:42 +00:00
|
|
|
|
1998-07-13 12:20:07 +00:00
|
|
|
#endif /* !_NETINET_IP_VAR_H_ */
|
