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/*!\file netinet/in_var.h |
* IP interface address. |
*/ |
|
/* |
* Copyright (c) 1985, 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. |
* 3. All advertising materials mentioning features or use of this software |
* must display the following acknowledgement: |
* This product includes software developed by the University of |
* California, Berkeley and its contributors. |
* 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. |
* |
* @(#)in_var.h 8.2 (Berkeley) 1/9/95 |
* $Id: in_var.h,v 1.17 1996/03/14 16:59:19 fenner Exp $ |
*/ |
|
#ifndef __NETINET_IN_VAR_H |
#define __NETINET_IN_VAR_H |
|
#include <sys/queue.h> |
|
/* |
* Interface address, Internet version. One of these structures |
* is allocated for each interface with an Internet address. |
* The ifaddr structure contains the protocol-independent part |
* of the structure and is assumed to be first. |
*/ |
struct in_ifaddr { |
struct ifaddr ia_ifa; /* protocol-independent info */ |
#define ia_ifp ia_ifa.ifa_ifp |
#define ia_flags ia_ifa.ifa_flags |
/* ia_{,sub}net{,mask} in host order */ |
u_long ia_net; /* network number of interface */ |
u_long ia_netmask; /* mask of net part */ |
u_long ia_subnet; /* subnet number, including net */ |
u_long ia_subnetmask; /* mask of subnet part */ |
struct in_addr ia_netbroadcast; /* to recognize net broadcasts */ |
struct in_ifaddr *ia_next; /* next in list of internet addresses */ |
struct sockaddr_in ia_addr; /* reserve space for interface name */ |
struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */ |
#define ia_broadaddr ia_dstaddr |
struct sockaddr_in ia_sockmask; /* reserve space for general netmask */ |
LIST_HEAD(in_multihead, in_multi) ia_multiaddrs; |
/* list of multicast addresses */ |
}; |
|
struct in_aliasreq { |
char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ |
struct sockaddr_in ifra_addr; |
struct sockaddr_in ifra_broadaddr; |
#define ifra_dstaddr ifra_broadaddr |
struct sockaddr_in ifra_mask; |
}; |
/* |
* Given a pointer to an in_ifaddr (ifaddr), |
* return a pointer to the addr as a sockaddr_in. |
*/ |
#define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr)) |
#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr)) |
|
#define IN_LNAOF(in, ifa) \ |
((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask)) |
|
|
/* |
* This information should be part of the ifnet structure but we don't wish |
* to change that - as it might break a number of things |
*/ |
|
struct router_info { |
struct ifnet *rti_ifp; |
int rti_type; /* type of router which is querier on this interface */ |
int rti_time; /* # of slow timeouts since last old query */ |
struct router_info *rti_next; |
}; |
|
/* |
* Internet multicast address structure. There is one of these for each IP |
* multicast group to which this host belongs on a given network interface. |
* They are kept in a linked list, rooted in the interface's in_ifaddr |
* structure. |
*/ |
struct in_multi { |
LIST_ENTRY(in_multi) inm_entry; /* list glue */ |
struct in_addr inm_addr; /* IP multicast address */ |
struct ifnet *inm_ifp; /* back pointer to ifnet */ |
struct in_ifaddr *inm_ia; /* back pointer to in_ifaddr */ |
u_int inm_refcount; /* no. membership claims by sockets */ |
u_int inm_timer; /* IGMP membership report timer */ |
u_int inm_state; /* state of the membership */ |
struct router_info *inm_rti; /* router info*/ |
}; |
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#endif |