17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * Copyright (c) 1983, 1993
37c478bd9Sstevel@tonic-gate  *	The Regents of the University of California.  All rights reserved.
47c478bd9Sstevel@tonic-gate  *
57c478bd9Sstevel@tonic-gate  * Redistribution and use in source and binary forms, with or without
67c478bd9Sstevel@tonic-gate  * modification, are permitted provided that the following conditions
77c478bd9Sstevel@tonic-gate  * are met:
87c478bd9Sstevel@tonic-gate  * 1. Redistributions of source code must retain the above copyright
97c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer.
107c478bd9Sstevel@tonic-gate  * 2. Redistributions in binary form must reproduce the above copyright
117c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer in the
127c478bd9Sstevel@tonic-gate  *    documentation and/or other materials provided with the distribution.
137c478bd9Sstevel@tonic-gate  * 3. All advertising materials mentioning features or use of this software
147c478bd9Sstevel@tonic-gate  *    must display the following acknowledgement:
157c478bd9Sstevel@tonic-gate  *	This product includes software developed by the University of
167c478bd9Sstevel@tonic-gate  *	California, Berkeley and its contributors.
177c478bd9Sstevel@tonic-gate  * 4. Neither the name of the University nor the names of its contributors
187c478bd9Sstevel@tonic-gate  *    may be used to endorse or promote products derived from this software
197c478bd9Sstevel@tonic-gate  *    without specific prior written permission.
207c478bd9Sstevel@tonic-gate  *
217c478bd9Sstevel@tonic-gate  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
227c478bd9Sstevel@tonic-gate  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
237c478bd9Sstevel@tonic-gate  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
247c478bd9Sstevel@tonic-gate  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
257c478bd9Sstevel@tonic-gate  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
267c478bd9Sstevel@tonic-gate  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
277c478bd9Sstevel@tonic-gate  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
287c478bd9Sstevel@tonic-gate  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
297c478bd9Sstevel@tonic-gate  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
307c478bd9Sstevel@tonic-gate  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
317c478bd9Sstevel@tonic-gate  * SUCH DAMAGE.
327c478bd9Sstevel@tonic-gate  */
337c478bd9Sstevel@tonic-gate 
347c478bd9Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint)
357c478bd9Sstevel@tonic-gate static const char sccsid[] = "@(#)inet_makeaddr.c	8.1 (Berkeley) 6/4/93";
367c478bd9Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */
377c478bd9Sstevel@tonic-gate 
387c478bd9Sstevel@tonic-gate #include "port_before.h"
397c478bd9Sstevel@tonic-gate 
407c478bd9Sstevel@tonic-gate #include <sys/param.h>
417c478bd9Sstevel@tonic-gate #include <netinet/in.h>
427c478bd9Sstevel@tonic-gate #include <arpa/inet.h>
437c478bd9Sstevel@tonic-gate 
447c478bd9Sstevel@tonic-gate #include "port_after.h"
457c478bd9Sstevel@tonic-gate 
46*9525b14bSRao Shoaib /*%
477c478bd9Sstevel@tonic-gate  * Formulate an Internet address from network + host.  Used in
487c478bd9Sstevel@tonic-gate  * building addresses stored in the ifnet structure.
497c478bd9Sstevel@tonic-gate  */
507c478bd9Sstevel@tonic-gate struct in_addr
inet_makeaddr(net,host)517c478bd9Sstevel@tonic-gate inet_makeaddr(net, host)
527c478bd9Sstevel@tonic-gate 	u_long net, host;
537c478bd9Sstevel@tonic-gate {
54*9525b14bSRao Shoaib 	struct in_addr a;
557c478bd9Sstevel@tonic-gate 
56*9525b14bSRao Shoaib 	if (net < 128U)
57*9525b14bSRao Shoaib 		a.s_addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
58*9525b14bSRao Shoaib 	else if (net < 65536U)
59*9525b14bSRao Shoaib 		a.s_addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
607c478bd9Sstevel@tonic-gate 	else if (net < 16777216L)
61*9525b14bSRao Shoaib 		a.s_addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
627c478bd9Sstevel@tonic-gate 	else
63*9525b14bSRao Shoaib 		a.s_addr = net | host;
64*9525b14bSRao Shoaib 	a.s_addr = htonl(a.s_addr);
65*9525b14bSRao Shoaib 	return (a);
667c478bd9Sstevel@tonic-gate }
67*9525b14bSRao Shoaib 
68*9525b14bSRao Shoaib /*! \file */
69