xref: /dragonfly/usr.sbin/ppp/ua.h (revision 31524921)
1 /*-
2  * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
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  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD: src/usr.sbin/ppp/ua.h,v 1.3 1999/08/28 01:18:49 peter Exp $
27  */
28 
29 #define ua_htonl(src, tgt)				\
30     do {						\
31       u_int32_t __oh;					\
32       memcpy(&__oh, (src), sizeof __oh);		\
33       *(u_char *)(tgt) = __oh >> 24;			\
34       *((u_char *)(tgt) + 1) = (__oh >> 16) & 0xff;	\
35       *((u_char *)(tgt) + 2) = (__oh >> 8) & 0xff;	\
36       *((u_char *)(tgt) + 3) = __oh & 0xff;		\
37     } while (0)
38 
39 #define ua_ntohl(src, tgt)				\
40     do {						\
41       u_int32_t __nh;					\
42       __nh = ((u_int32_t)*(u_char *)(src) << 24) |	\
43           ((u_int32_t)*((u_char *)(src) + 1) << 16) |	\
44           ((u_int32_t)*((u_char *)(src) + 2) << 8) |	\
45           (u_int32_t)*((u_char *)(src) + 3);		\
46       memcpy((tgt), &__nh, sizeof __nh);		\
47     } while (0)
48 
49 #define ua_htons(src, tgt)				\
50     do {						\
51       u_int16_t __oh;					\
52       memcpy(&__oh, (src), sizeof __oh);		\
53       *(u_char *)(tgt) = __oh >> 8;			\
54       *((u_char *)(tgt) + 1) = __oh & 0xff;		\
55     } while (0)
56 
57 #define ua_ntohs(src, tgt)				\
58     do {						\
59       u_int16_t __nh;					\
60       __nh = ((u_int16_t)*(u_char *)(src) << 8) |	\
61           (u_int16_t)*((u_char *)(src) + 1);		\
62       memcpy((tgt), &__nh, sizeof __nh);		\
63     } while (0)
64