1156952Sume/* 2156952Sume * Copyright (c) 1983, 1993 3156952Sume * The Regents of the University of California. All rights reserved. 4156952Sume * 5156952Sume * Redistribution and use in source and binary forms, with or without 6156952Sume * modification, are permitted provided that the following conditions 7156952Sume * are met: 8156952Sume * 1. Redistributions of source code must retain the above copyright 9156952Sume * notice, this list of conditions and the following disclaimer. 10156952Sume * 2. Redistributions in binary form must reproduce the above copyright 11156952Sume * notice, this list of conditions and the following disclaimer in the 12156952Sume * documentation and/or other materials provided with the distribution. 13156952Sume * 4. Neither the name of the University nor the names of its contributors 14156952Sume * may be used to endorse or promote products derived from this software 15156952Sume * without specific prior written permission. 16156952Sume * 17156952Sume * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18156952Sume * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19156952Sume * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20156952Sume * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21156952Sume * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22156952Sume * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23156952Sume * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24156952Sume * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25156952Sume * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26156952Sume * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27156952Sume * SUCH DAMAGE. 28156952Sume */ 29156952Sume 30156952Sume#if defined(LIBC_SCCS) && !defined(lint) 31156952Sumestatic const char sccsid[] = "@(#)inet_makeaddr.c 8.1 (Berkeley) 6/4/93"; 32156952Sume#endif /* LIBC_SCCS and not lint */ 33156956Sume#include <sys/cdefs.h> 34156956Sume__FBSDID("$FreeBSD$"); 35156952Sume 36156952Sume#include "port_before.h" 37156952Sume 38156952Sume#include <sys/param.h> 39156952Sume#include <netinet/in.h> 40156952Sume#include <arpa/inet.h> 41156952Sume 42156952Sume#include "port_after.h" 43156952Sume 44170244Sume/*% 45156952Sume * Formulate an Internet address from network + host. Used in 46156952Sume * building addresses stored in the ifnet structure. 47156952Sume */ 48156952Sumestruct in_addr 49156952Sumeinet_makeaddr(net, host) 50156956Sume in_addr_t net, host; 51156952Sume{ 52156952Sume struct in_addr a; 53156952Sume 54156952Sume if (net < 128U) 55156952Sume a.s_addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST); 56156952Sume else if (net < 65536U) 57156952Sume a.s_addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST); 58156952Sume else if (net < 16777216L) 59156952Sume a.s_addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST); 60156952Sume else 61156952Sume a.s_addr = net | host; 62156952Sume a.s_addr = htonl(a.s_addr); 63156952Sume return (a); 64156952Sume} 65156956Sume 66156956Sume/* 67156956Sume * Weak aliases for applications that use certain private entry points, 68156956Sume * and fail to include <arpa/inet.h>. 69156956Sume */ 70156956Sume#undef inet_makeaddr 71156956Sume__weak_reference(__inet_makeaddr, inet_makeaddr); 72170244Sume 73170244Sume/*! \file */ 74