1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2001 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #pragma ident "%Z%%M% %I% %E% SMI" 41 42 #include <sys/types.h> 43 #include <netinet/in.h> 44 45 /* 46 * Formulate an Internet address from network + host. Used in 47 * building addresses stored in the ifnet structure. 48 */ 49 struct in_addr 50 inet_makeaddr(ipaddr_t net, ipaddr_t host) 51 { 52 ipaddr_t addr; 53 struct in_addr inaddr; 54 55 if (net < 128) 56 addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST); 57 else if (net < 65536) 58 addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST); 59 else if (net < 16777216L) 60 addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST); 61 else 62 addr = net | host; 63 addr = htonl(addr); 64 inaddr.s_addr = addr; 65 return (inaddr); 66 } 67