112 lines
4.1 KiB
C
112 lines
4.1 KiB
C
/****************************************************************************
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* include/nuttx/net/udp.h
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* Header file for the NuttX UDP stack.
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*
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* The UDP stack header file contains definitions for a number of C macros
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* that are used by the internal network structures, UDP header structures
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* and function declarations.
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*
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* Copyright (C) 2007, 2009, 2012, 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* This logic was leveraged from uIP which also has a BSD-style license:
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*
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* Author Adam Dunkels <adam@dunkels.com>
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* Copyright (c) 2001-2003, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_NET_UDP_H
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#define __INCLUDE_NUTTX_NET_UDP_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <nuttx/net/netconfig.h>
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#include <nuttx/net/ip.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Header sizes */
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#define UDP_HDRLEN 8 /* Size of UDP header */
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#ifdef CONFIG_NET_IPv4
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# define IPv4UDP_HDRLEN (UDP_HDRLEN + IPv4_HDRLEN) /* Size of IPv4 + UDP headers */
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#endif
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#ifdef CONFIG_NET_IPv6
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# define IPv6UDP_HDRLEN (UDP_HDRLEN + IPv6_HDRLEN) /* Size of IPv6 + UDP headers */
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#endif
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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/* The UDP header */
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struct udp_hdr_s
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{
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uint16_t srcport;
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uint16_t destport;
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uint16_t udplen;
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uint16_t udpchksum;
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};
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/* The structure holding the UDP statistics that are gathered if
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* CONFIG_NET_STATISTICS is defined.
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*/
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#ifdef CONFIG_NET_STATISTICS
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struct udp_stats_s
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{
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net_stats_t drop; /* Number of dropped UDP segments */
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net_stats_t recv; /* Number of recived UDP segments */
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net_stats_t sent; /* Number of sent UDP segments */
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net_stats_t chkerr; /* Number of UDP segments with a bad checksum */
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};
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#endif
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#endif /* __INCLUDE_NUTTX_NET_UDP_H */
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