2 * Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved.
3 * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.
4 * Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
38 * Provides common macros for dealing with byte swapping issues.
41 #ifndef _CL_BYTESWAP_OSD_H_
42 #define _CL_BYTESWAP_OSD_H_
45 * This provides defines __LITTLE_ENDIAN, __BIG_ENDIAN and __BYTE_ORDER
51 # define BEGIN_C_DECLS extern "C" {
52 # define END_C_DECLS }
53 #else /* !__cplusplus */
54 # define BEGIN_C_DECLS
56 #endif /* __cplusplus */
59 #if __BYTE_ORDER == __LITTLE_ENDIAN
60 #define cl_ntoh16(x) bswap_16(x)
61 #define cl_hton16(x) bswap_16(x)
62 #define cl_ntoh32(x) bswap_32(x)
63 #define cl_hton32(x) bswap_32(x)
64 #define cl_ntoh64(x) (uint64_t)bswap_64(x)
65 #define cl_hton64(x) (uint64_t)bswap_64(x)
66 #else /* Big Endian */
67 #define cl_ntoh16(x) (x)
68 #define cl_hton16(x) (x)
69 #define cl_ntoh32(x) (x)
70 #define cl_hton32(x) (x)
71 #define cl_ntoh64(x) (x)
72 #define cl_hton64(x) (x)
75 #endif /* _CL_BYTESWAP_OSD_H_ */