2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #if defined(LIBC_SCCS) && !defined(lint)
31 static const char sccsid[] = "@(#)inet_makeaddr.c 8.1 (Berkeley) 6/4/93";
32 #endif /* LIBC_SCCS and not lint */
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include "port_before.h"
38 #include <sys/param.h>
39 #include <netinet/in.h>
40 #include <arpa/inet.h>
42 #include "port_after.h"
45 * Formulate an Internet address from network + host. Used in
46 * building addresses stored in the ifnet structure.
49 inet_makeaddr(net, host)
55 a.s_addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
56 else if (net < 65536U)
57 a.s_addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
58 else if (net < 16777216L)
59 a.s_addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
61 a.s_addr = net | host;
62 a.s_addr = htonl(a.s_addr);
67 * Weak aliases for applications that use certain private entry points,
68 * and fail to include <arpa/inet.h>.
71 __weak_reference(__inet_makeaddr, inet_makeaddr);