1 /* 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. 5 * 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: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 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. 24 * 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 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 * 34 */ 35 36 /* 37 * Abstract: 38 * Provides common macros for dealing with byte swapping issues. 39 */ 40 41 #ifndef _CL_BYTESWAP_OSD_H_ 42 #define _CL_BYTESWAP_OSD_H_ 43 44 /* 45 * This provides defines __LITTLE_ENDIAN, __BIG_ENDIAN and __BYTE_ORDER 46 */ 47 #include <infiniband/endian.h> 48 #include <infiniband/byteswap.h> 49 50 #ifdef __cplusplus 51 # define BEGIN_C_DECLS extern "C" { 52 # define END_C_DECLS } 53 #else /* !__cplusplus */ 54 # define BEGIN_C_DECLS 55 # define END_C_DECLS 56 #endif /* __cplusplus */ 57 58 BEGIN_C_DECLS 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) 73 #endif 74 END_C_DECLS 75 #endif /* _CL_BYTESWAP_OSD_H_ */ 76