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in_var.h revision 1.1 
      1 /*
      2  * Copyright (c) 1985, 1986 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	@(#)in_var.h	7.6 (Berkeley) 6/28/90
     34  */
     35 
     36 /*
     37  * Interface address, Internet version.  One of these structures
     38  * is allocated for each interface with an Internet address.
     39  * The ifaddr structure contains the protocol-independent part
     40  * of the structure and is assumed to be first.
     41  */
     42 struct in_ifaddr {
     43 	struct	ifaddr ia_ifa;		/* protocol-independent info */
     44 #define	ia_ifp		ia_ifa.ifa_ifp
     45 #define ia_flags	ia_ifa.ifa_flags
     46 					/* ia_{,sub}net{,mask} in host order */
     47 	u_long	ia_net;			/* network number of interface */
     48 	u_long	ia_netmask;		/* mask of net part */
     49 	u_long	ia_subnet;		/* subnet number, including net */
     50 	u_long	ia_subnetmask;		/* mask of subnet part */
     51 	struct	in_addr ia_netbroadcast; /* to recognize net broadcasts */
     52 	struct	in_ifaddr *ia_next;	/* next in list of internet addresses */
     53 	struct	sockaddr_in ia_addr;	/* reserve space for interface name */
     54 	struct	sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
     55 #define	ia_broadaddr	ia_dstaddr
     56 	struct	sockaddr_in ia_sockmask; /* reserve space for general netmask */
     57 };
     58 
     59 struct	in_aliasreq {
     60 	char	ifra_name[IFNAMSIZ];		/* if name, e.g. "en0" */
     61 	struct	sockaddr_in ifra_addr;
     62 	struct	sockaddr_in ifra_broadaddr;
     63 #define ifra_dstaddr ifra_broadaddr
     64 	struct	sockaddr_in ifra_mask;
     65 };
     66 /*
     67  * Given a pointer to an in_ifaddr (ifaddr),
     68  * return a pointer to the addr as a sockaddr_in.
     69  */
     70 #define	IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr))
     71 
     72 #ifdef	KERNEL
     73 struct	in_ifaddr *in_ifaddr;
     74 struct	in_ifaddr *in_iaonnetof();
     75 struct	ifqueue	ipintrq;		/* ip packet input queue */
     76 #endif
     77