--- /dev/null
+/*!\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*/
+};
+
+#endif
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