mbed official / lwip

Official mbed lwIP library (version 1.4.0)

Dependents:   LwIPNetworking NetServicesMin EthernetInterface EthernetInterface_RSF ... more

Legacy Networking Libraries

This is an mbed 2 networking library. For mbed OS 5, lwip has been integrated with built-in networking interfaces. The networking libraries have been revised to better support additional network stacks and thread safety here.

This library is based on the code of lwIP v1.4.0

Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
All rights reserved. 

Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission. 

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
OF SUCH DAMAGE.

include/lwip/def.h@0:51ac1d130fd4, 2012-06-22 (annotated)

Committer:
mbed_official
Date:
Fri Jun 22 09:25:39 2012 +0000
Revision:
0:51ac1d130fd4
Initial import from lwip-1.4.0: http://download.savannah.gnu.org/releases/lwip/lwip-1.4.0.zip

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:51ac1d130fd4 1 /*
mbed_official 0:51ac1d130fd4 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
mbed_official 0:51ac1d130fd4 3 * All rights reserved.
mbed_official 0:51ac1d130fd4 4 *
mbed_official 0:51ac1d130fd4 5 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 0:51ac1d130fd4 6 * are permitted provided that the following conditions are met:
mbed_official 0:51ac1d130fd4 7 *
mbed_official 0:51ac1d130fd4 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 0:51ac1d130fd4 9 * this list of conditions and the following disclaimer.
mbed_official 0:51ac1d130fd4 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 0:51ac1d130fd4 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 0:51ac1d130fd4 12 * and/or other materials provided with the distribution.
mbed_official 0:51ac1d130fd4 13 * 3. The name of the author may not be used to endorse or promote products
mbed_official 0:51ac1d130fd4 14 * derived from this software without specific prior written permission.
mbed_official 0:51ac1d130fd4 15 *
mbed_official 0:51ac1d130fd4 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
mbed_official 0:51ac1d130fd4 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
mbed_official 0:51ac1d130fd4 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
mbed_official 0:51ac1d130fd4 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
mbed_official 0:51ac1d130fd4 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
mbed_official 0:51ac1d130fd4 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 0:51ac1d130fd4 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 0:51ac1d130fd4 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
mbed_official 0:51ac1d130fd4 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
mbed_official 0:51ac1d130fd4 25 * OF SUCH DAMAGE.
mbed_official 0:51ac1d130fd4 26 *
mbed_official 0:51ac1d130fd4 27 * This file is part of the lwIP TCP/IP stack.
mbed_official 0:51ac1d130fd4 28 *
mbed_official 0:51ac1d130fd4 29 * Author: Adam Dunkels <adam@sics.se>
mbed_official 0:51ac1d130fd4 30 *
mbed_official 0:51ac1d130fd4 31 */
mbed_official 0:51ac1d130fd4 32 #ifndef __LWIP_DEF_H__
mbed_official 0:51ac1d130fd4 33 #define __LWIP_DEF_H__
mbed_official 0:51ac1d130fd4 34
mbed_official 0:51ac1d130fd4 35 /* arch.h might define NULL already */
mbed_official 0:51ac1d130fd4 36 #include "lwip/arch.h"
mbed_official 0:51ac1d130fd4 37 #include "lwip/opt.h"
mbed_official 0:51ac1d130fd4 38
mbed_official 0:51ac1d130fd4 39 #ifdef __cplusplus
mbed_official 0:51ac1d130fd4 40 extern "C" {
mbed_official 0:51ac1d130fd4 41 #endif
mbed_official 0:51ac1d130fd4 42
mbed_official 0:51ac1d130fd4 43 #define LWIP_MAX(x , y) (((x) > (y)) ? (x) : (y))
mbed_official 0:51ac1d130fd4 44 #define LWIP_MIN(x , y) (((x) < (y)) ? (x) : (y))
mbed_official 0:51ac1d130fd4 45
mbed_official 0:51ac1d130fd4 46 #ifndef NULL
mbed_official 0:51ac1d130fd4 47 #define NULL ((void *)0)
mbed_official 0:51ac1d130fd4 48 #endif
mbed_official 0:51ac1d130fd4 49
mbed_official 0:51ac1d130fd4 50 /** Get the absolute difference between 2 u32_t values (correcting overflows)
mbed_official 0:51ac1d130fd4 51 * 'a' is expected to be 'higher' (without overflow) than 'b'. */
mbed_official 0:51ac1d130fd4 52 #define LWIP_U32_DIFF(a, b) (((a) >= (b)) ? ((a) - (b)) : (((a) + ((b) ^ 0xFFFFFFFF) + 1)))
mbed_official 0:51ac1d130fd4 53
mbed_official 0:51ac1d130fd4 54 /* Endianess-optimized shifting of two u8_t to create one u16_t */
mbed_official 0:51ac1d130fd4 55 #if BYTE_ORDER == LITTLE_ENDIAN
mbed_official 0:51ac1d130fd4 56 #define LWIP_MAKE_U16(a, b) ((a << 8) | b)
mbed_official 0:51ac1d130fd4 57 #else
mbed_official 0:51ac1d130fd4 58 #define LWIP_MAKE_U16(a, b) ((b << 8) | a)
mbed_official 0:51ac1d130fd4 59 #endif
mbed_official 0:51ac1d130fd4 60
mbed_official 0:51ac1d130fd4 61 #ifndef LWIP_PLATFORM_BYTESWAP
mbed_official 0:51ac1d130fd4 62 #define LWIP_PLATFORM_BYTESWAP 0
mbed_official 0:51ac1d130fd4 63 #endif
mbed_official 0:51ac1d130fd4 64
mbed_official 0:51ac1d130fd4 65 #ifndef LWIP_PREFIX_BYTEORDER_FUNCS
mbed_official 0:51ac1d130fd4 66 /* workaround for naming collisions on some platforms */
mbed_official 0:51ac1d130fd4 67
mbed_official 0:51ac1d130fd4 68 #ifdef htons
mbed_official 0:51ac1d130fd4 69 #undef htons
mbed_official 0:51ac1d130fd4 70 #endif /* htons */
mbed_official 0:51ac1d130fd4 71 #ifdef htonl
mbed_official 0:51ac1d130fd4 72 #undef htonl
mbed_official 0:51ac1d130fd4 73 #endif /* htonl */
mbed_official 0:51ac1d130fd4 74 #ifdef ntohs
mbed_official 0:51ac1d130fd4 75 #undef ntohs
mbed_official 0:51ac1d130fd4 76 #endif /* ntohs */
mbed_official 0:51ac1d130fd4 77 #ifdef ntohl
mbed_official 0:51ac1d130fd4 78 #undef ntohl
mbed_official 0:51ac1d130fd4 79 #endif /* ntohl */
mbed_official 0:51ac1d130fd4 80
mbed_official 0:51ac1d130fd4 81 #define htons(x) lwip_htons(x)
mbed_official 0:51ac1d130fd4 82 #define ntohs(x) lwip_ntohs(x)
mbed_official 0:51ac1d130fd4 83 #define htonl(x) lwip_htonl(x)
mbed_official 0:51ac1d130fd4 84 #define ntohl(x) lwip_ntohl(x)
mbed_official 0:51ac1d130fd4 85 #endif /* LWIP_PREFIX_BYTEORDER_FUNCS */
mbed_official 0:51ac1d130fd4 86
mbed_official 0:51ac1d130fd4 87 #if BYTE_ORDER == BIG_ENDIAN
mbed_official 0:51ac1d130fd4 88 #define lwip_htons(x) (x)
mbed_official 0:51ac1d130fd4 89 #define lwip_ntohs(x) (x)
mbed_official 0:51ac1d130fd4 90 #define lwip_htonl(x) (x)
mbed_official 0:51ac1d130fd4 91 #define lwip_ntohl(x) (x)
mbed_official 0:51ac1d130fd4 92 #define PP_HTONS(x) (x)
mbed_official 0:51ac1d130fd4 93 #define PP_NTOHS(x) (x)
mbed_official 0:51ac1d130fd4 94 #define PP_HTONL(x) (x)
mbed_official 0:51ac1d130fd4 95 #define PP_NTOHL(x) (x)
mbed_official 0:51ac1d130fd4 96 #else /* BYTE_ORDER != BIG_ENDIAN */
mbed_official 0:51ac1d130fd4 97 #if LWIP_PLATFORM_BYTESWAP
mbed_official 0:51ac1d130fd4 98 #define lwip_htons(x) LWIP_PLATFORM_HTONS(x)
mbed_official 0:51ac1d130fd4 99 #define lwip_ntohs(x) LWIP_PLATFORM_HTONS(x)
mbed_official 0:51ac1d130fd4 100 #define lwip_htonl(x) LWIP_PLATFORM_HTONL(x)
mbed_official 0:51ac1d130fd4 101 #define lwip_ntohl(x) LWIP_PLATFORM_HTONL(x)
mbed_official 0:51ac1d130fd4 102 #else /* LWIP_PLATFORM_BYTESWAP */
mbed_official 0:51ac1d130fd4 103 u16_t lwip_htons(u16_t x);
mbed_official 0:51ac1d130fd4 104 u16_t lwip_ntohs(u16_t x);
mbed_official 0:51ac1d130fd4 105 u32_t lwip_htonl(u32_t x);
mbed_official 0:51ac1d130fd4 106 u32_t lwip_ntohl(u32_t x);
mbed_official 0:51ac1d130fd4 107 #endif /* LWIP_PLATFORM_BYTESWAP */
mbed_official 0:51ac1d130fd4 108
mbed_official 0:51ac1d130fd4 109 /* These macros should be calculated by the preprocessor and are used
mbed_official 0:51ac1d130fd4 110 with compile-time constants only (so that there is no little-endian
mbed_official 0:51ac1d130fd4 111 overhead at runtime). */
mbed_official 0:51ac1d130fd4 112 #define PP_HTONS(x) ((((x) & 0xff) << 8) | (((x) & 0xff00) >> 8))
mbed_official 0:51ac1d130fd4 113 #define PP_NTOHS(x) PP_HTONS(x)
mbed_official 0:51ac1d130fd4 114 #define PP_HTONL(x) ((((x) & 0xff) << 24) | \
mbed_official 0:51ac1d130fd4 115 (((x) & 0xff00) << 8) | \
mbed_official 0:51ac1d130fd4 116 (((x) & 0xff0000UL) >> 8) | \
mbed_official 0:51ac1d130fd4 117 (((x) & 0xff000000UL) >> 24))
mbed_official 0:51ac1d130fd4 118 #define PP_NTOHL(x) PP_HTONL(x)
mbed_official 0:51ac1d130fd4 119
mbed_official 0:51ac1d130fd4 120 #endif /* BYTE_ORDER == BIG_ENDIAN */
mbed_official 0:51ac1d130fd4 121
mbed_official 0:51ac1d130fd4 122 #ifdef __cplusplus
mbed_official 0:51ac1d130fd4 123 }
mbed_official 0:51ac1d130fd4 124 #endif
mbed_official 0:51ac1d130fd4 125
mbed_official 0:51ac1d130fd4 126 #endif /* __LWIP_DEF_H__ */
mbed_official 0:51ac1d130fd4 127