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EthernetnetIf/LPC2368/lwip/include/lwip/def.h@0:5b2e60110d9b, 2011-04-15 (annotated)

Committer:: okini3939
Date:: Fri Apr 15 16:51:30 2011 +0000
Revision:: 0:5b2e60110d9b

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User	Revision	Line number	New contents of line
okini3939	0:5b2e60110d9b	1	/*
okini3939	0:5b2e60110d9b	2	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
okini3939	0:5b2e60110d9b	3	* All rights reserved.
okini3939	0:5b2e60110d9b	4	*
okini3939	0:5b2e60110d9b	5	* Redistribution and use in source and binary forms, with or without modification,
okini3939	0:5b2e60110d9b	6	* are permitted provided that the following conditions are met:
okini3939	0:5b2e60110d9b	7	*
okini3939	0:5b2e60110d9b	8	* 1. Redistributions of source code must retain the above copyright notice,
okini3939	0:5b2e60110d9b	9	* this list of conditions and the following disclaimer.
okini3939	0:5b2e60110d9b	10	* 2. Redistributions in binary form must reproduce the above copyright notice,
okini3939	0:5b2e60110d9b	11	* this list of conditions and the following disclaimer in the documentation
okini3939	0:5b2e60110d9b	12	* and/or other materials provided with the distribution.
okini3939	0:5b2e60110d9b	13	* 3. The name of the author may not be used to endorse or promote products
okini3939	0:5b2e60110d9b	14	* derived from this software without specific prior written permission.
okini3939	0:5b2e60110d9b	15	*
okini3939	0:5b2e60110d9b	16	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
okini3939	0:5b2e60110d9b	17	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
okini3939	0:5b2e60110d9b	18	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
okini3939	0:5b2e60110d9b	19	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
okini3939	0:5b2e60110d9b	20	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
okini3939	0:5b2e60110d9b	21	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
okini3939	0:5b2e60110d9b	22	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
okini3939	0:5b2e60110d9b	23	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
okini3939	0:5b2e60110d9b	24	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
okini3939	0:5b2e60110d9b	25	* OF SUCH DAMAGE.
okini3939	0:5b2e60110d9b	26	*
okini3939	0:5b2e60110d9b	27	* This file is part of the lwIP TCP/IP stack.
okini3939	0:5b2e60110d9b	28	*
okini3939	0:5b2e60110d9b	29	* Author: Adam Dunkels <adam@sics.se>
okini3939	0:5b2e60110d9b	30	*
okini3939	0:5b2e60110d9b	31	*/
okini3939	0:5b2e60110d9b	32	#ifndef __LWIP_DEF_H__
okini3939	0:5b2e60110d9b	33	#define __LWIP_DEF_H__
okini3939	0:5b2e60110d9b	34
okini3939	0:5b2e60110d9b	35	/* arch.h might define NULL already */
okini3939	0:5b2e60110d9b	36	#include "lwip/arch.h"
okini3939	0:5b2e60110d9b	37	#include "lwip/opt.h"
okini3939	0:5b2e60110d9b	38
okini3939	0:5b2e60110d9b	39	#ifdef __cplusplus
okini3939	0:5b2e60110d9b	40	extern "C" {
okini3939	0:5b2e60110d9b	41	#endif
okini3939	0:5b2e60110d9b	42
okini3939	0:5b2e60110d9b	43	#define LWIP_MAX(x , y) (((x) > (y)) ? (x) : (y))
okini3939	0:5b2e60110d9b	44	#define LWIP_MIN(x , y) (((x) < (y)) ? (x) : (y))
okini3939	0:5b2e60110d9b	45
okini3939	0:5b2e60110d9b	46	#ifndef NULL
okini3939	0:5b2e60110d9b	47	#define NULL ((void *)0)
okini3939	0:5b2e60110d9b	48	#endif
okini3939	0:5b2e60110d9b	49
okini3939	0:5b2e60110d9b	50	/** Get the absolute difference between 2 u32_t values (correcting overflows)
okini3939	0:5b2e60110d9b	51	* 'a' is expected to be 'higher' (without overflow) than 'b'. */
okini3939	0:5b2e60110d9b	52	#define LWIP_U32_DIFF(a, b) (((a) >= (b)) ? ((a) - (b)) : (((a) + ((b) ^ 0xFFFFFFFF) + 1)))
okini3939	0:5b2e60110d9b	53
okini3939	0:5b2e60110d9b	54	/* Endianess-optimized shifting of two u8_t to create one u16_t */
okini3939	0:5b2e60110d9b	55	#if BYTE_ORDER == LITTLE_ENDIAN
okini3939	0:5b2e60110d9b	56	#define LWIP_MAKE_U16(a, b) ((a << 8) \| b)
okini3939	0:5b2e60110d9b	57	#else
okini3939	0:5b2e60110d9b	58	#define LWIP_MAKE_U16(a, b) ((b << 8) \| a)
okini3939	0:5b2e60110d9b	59	#endif
okini3939	0:5b2e60110d9b	60
okini3939	0:5b2e60110d9b	61	#ifndef LWIP_PLATFORM_BYTESWAP
okini3939	0:5b2e60110d9b	62	#define LWIP_PLATFORM_BYTESWAP 0
okini3939	0:5b2e60110d9b	63	#endif
okini3939	0:5b2e60110d9b	64
okini3939	0:5b2e60110d9b	65	#ifndef LWIP_PREFIX_BYTEORDER_FUNCS
okini3939	0:5b2e60110d9b	66	/* workaround for naming collisions on some platforms */
okini3939	0:5b2e60110d9b	67
okini3939	0:5b2e60110d9b	68	#ifdef htons
okini3939	0:5b2e60110d9b	69	#undef htons
okini3939	0:5b2e60110d9b	70	#endif /* htons */
okini3939	0:5b2e60110d9b	71	#ifdef htonl
okini3939	0:5b2e60110d9b	72	#undef htonl
okini3939	0:5b2e60110d9b	73	#endif /* htonl */
okini3939	0:5b2e60110d9b	74	#ifdef ntohs
okini3939	0:5b2e60110d9b	75	#undef ntohs
okini3939	0:5b2e60110d9b	76	#endif /* ntohs */
okini3939	0:5b2e60110d9b	77	#ifdef ntohl
okini3939	0:5b2e60110d9b	78	#undef ntohl
okini3939	0:5b2e60110d9b	79	#endif /* ntohl */
okini3939	0:5b2e60110d9b	80
okini3939	0:5b2e60110d9b	81	#define htons(x) lwip_htons(x)
okini3939	0:5b2e60110d9b	82	#define ntohs(x) lwip_ntohs(x)
okini3939	0:5b2e60110d9b	83	#define htonl(x) lwip_htonl(x)
okini3939	0:5b2e60110d9b	84	#define ntohl(x) lwip_ntohl(x)
okini3939	0:5b2e60110d9b	85	#endif /* LWIP_PREFIX_BYTEORDER_FUNCS */
okini3939	0:5b2e60110d9b	86
okini3939	0:5b2e60110d9b	87	#if BYTE_ORDER == BIG_ENDIAN
okini3939	0:5b2e60110d9b	88	#define lwip_htons(x) (x)
okini3939	0:5b2e60110d9b	89	#define lwip_ntohs(x) (x)
okini3939	0:5b2e60110d9b	90	#define lwip_htonl(x) (x)
okini3939	0:5b2e60110d9b	91	#define lwip_ntohl(x) (x)
okini3939	0:5b2e60110d9b	92	#define PP_HTONS(x) (x)
okini3939	0:5b2e60110d9b	93	#define PP_NTOHS(x) (x)
okini3939	0:5b2e60110d9b	94	#define PP_HTONL(x) (x)
okini3939	0:5b2e60110d9b	95	#define PP_NTOHL(x) (x)
okini3939	0:5b2e60110d9b	96	#else /* BYTE_ORDER != BIG_ENDIAN */
okini3939	0:5b2e60110d9b	97	#if LWIP_PLATFORM_BYTESWAP
okini3939	0:5b2e60110d9b	98	#define lwip_htons(x) LWIP_PLATFORM_HTONS(x)
okini3939	0:5b2e60110d9b	99	#define lwip_ntohs(x) LWIP_PLATFORM_HTONS(x)
okini3939	0:5b2e60110d9b	100	#define lwip_htonl(x) LWIP_PLATFORM_HTONL(x)
okini3939	0:5b2e60110d9b	101	#define lwip_ntohl(x) LWIP_PLATFORM_HTONL(x)
okini3939	0:5b2e60110d9b	102	#else /* LWIP_PLATFORM_BYTESWAP */
okini3939	0:5b2e60110d9b	103	u16_t lwip_htons(u16_t x);
okini3939	0:5b2e60110d9b	104	u16_t lwip_ntohs(u16_t x);
okini3939	0:5b2e60110d9b	105	u32_t lwip_htonl(u32_t x);
okini3939	0:5b2e60110d9b	106	u32_t lwip_ntohl(u32_t x);
okini3939	0:5b2e60110d9b	107	#endif /* LWIP_PLATFORM_BYTESWAP */
okini3939	0:5b2e60110d9b	108
okini3939	0:5b2e60110d9b	109	/* These macros should be calculated by the preprocessor and are used
okini3939	0:5b2e60110d9b	110	with compile-time constants only (so that there is no little-endian
okini3939	0:5b2e60110d9b	111	overhead at runtime). */
okini3939	0:5b2e60110d9b	112	#define PP_HTONS(x) ((((x) & 0xff) << 8) \| (((x) & 0xff00) >> 8))
okini3939	0:5b2e60110d9b	113	#define PP_NTOHS(x) PP_HTONS(x)
okini3939	0:5b2e60110d9b	114	#define PP_HTONL(x) ((((x) & 0xff) << 24) \| \
okini3939	0:5b2e60110d9b	115	(((x) & 0xff00) << 8) \| \
okini3939	0:5b2e60110d9b	116	(((x) & 0xff0000UL) >> 8) \| \
okini3939	0:5b2e60110d9b	117	(((x) & 0xff000000UL) >> 24))
okini3939	0:5b2e60110d9b	118	#define PP_NTOHL(x) PP_HTONL(x)
okini3939	0:5b2e60110d9b	119
okini3939	0:5b2e60110d9b	120	#endif /* BYTE_ORDER == BIG_ENDIAN */
okini3939	0:5b2e60110d9b	121
okini3939	0:5b2e60110d9b	122	#ifdef __cplusplus
okini3939	0:5b2e60110d9b	123	}
okini3939	0:5b2e60110d9b	124	#endif
okini3939	0:5b2e60110d9b	125
okini3939	0:5b2e60110d9b	126	#endif /* __LWIP_DEF_H__ */
okini3939	0:5b2e60110d9b	127

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	15 Apr 2011
Imports:	16
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

EthernetnetIf/LPC2368/lwip/include/lwip/def.h@0:5b2e60110d9b, 2011-04-15 (annotated)

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