1/** 2 * @file 3 * UDP protocol definitions 4 */ 5 6/* 7 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without modification, 11 * are permitted provided that the following conditions are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 30 * OF SUCH DAMAGE. 31 * 32 * This file is part of the lwIP TCP/IP stack. 33 * 34 * Author: Adam Dunkels <adam@sics.se> 35 * 36 */ 37#ifndef LWIP_HDR_PROT_UDP_H 38#define LWIP_HDR_PROT_UDP_H 39 40#include "lwip/arch.h" 41 42#ifdef __cplusplus 43extern "C" { 44#endif 45 46#define UDP_HLEN 8 47 48/* Fields are (of course) in network byte order. */ 49#ifdef PACK_STRUCT_USE_INCLUDES 50# include "arch/bpstruct.h" 51#endif 52PACK_STRUCT_BEGIN 53struct udp_hdr { 54 PACK_STRUCT_FIELD(u16_t src); 55 PACK_STRUCT_FIELD(u16_t dest); /* src/dest UDP ports */ 56 PACK_STRUCT_FIELD(u16_t len); 57 PACK_STRUCT_FIELD(u16_t chksum); 58} PACK_STRUCT_STRUCT; 59PACK_STRUCT_END 60#ifdef PACK_STRUCT_USE_INCLUDES 61# include "arch/epstruct.h" 62#endif 63 64#ifdef __cplusplus 65} 66#endif 67 68#endif /* LWIP_HDR_PROT_UDP_H */ 69