incubator-nuttx/include/netinet/ip.h

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/****************************************************************************
* include/netinet/ip.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_NETINET_IP_H
#define __INCLUDE_NETINET_IP_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/socket.h>
#include <netinet/in.h>
/****************************************************************************
* Public Type Definitions
****************************************************************************/
#define IPVERSION 4 /* IP version number */
#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
struct iphdr
{
#if __BYTE_ORDER == __LITTLE_ENDIAN
unsigned int ihl:4;
unsigned int version:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
unsigned int version:4;
unsigned int ihl:4;
#else
# error "unknown endian"
#endif
uint8_t tos;
uint16_t tot_len;
uint16_t id;
uint16_t frag_off;
uint8_t ttl;
uint8_t protocol;
uint16_t check;
uint32_t saddr;
uint32_t daddr;
/* The options start here. */
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#endif /* __INCLUDE_NETINET_IP_H */