nes-proj/core/net/ipv6/uip-icmp6.h

198 lines
7.0 KiB
C

/**
* \addtogroup uip6
* @{
*/
/**
* \file
* ICMPv6 echo request and error messages (RFC 4443)
* \author Julien Abeille <jabeille@cisco.com>
* \author Mathilde Durvy <mdurvy@cisco.com>
*/
/*
* Copyright (c) 2006, 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*
* This file is part of the Contiki operating system.
*
*/
#ifndef ICMP6_H_
#define ICMP6_H_
#include "net/ip/uip.h"
/** \name ICMPv6 message types */
/** @{ */
#define ICMP6_DST_UNREACH 1 /**< dest unreachable */
#define ICMP6_PACKET_TOO_BIG 2 /**< packet too big */
#define ICMP6_TIME_EXCEEDED 3 /**< time exceeded */
#define ICMP6_PARAM_PROB 4 /**< ip6 header bad */
#define ICMP6_ECHO_REQUEST 128 /**< Echo request */
#define ICMP6_ECHO_REPLY 129 /**< Echo reply */
#define ICMP6_RS 133 /**< Router Solicitation */
#define ICMP6_RA 134 /**< Router Advertisement */
#define ICMP6_NS 135 /**< Neighbor Solicitation */
#define ICMP6_NA 136 /**< Neighbor advertisement */
#define ICMP6_REDIRECT 137 /**< Redirect */
#define ICMP6_RPL 155 /**< RPL */
/** @} */
/** \name ICMPv6 Destination Unreachable message codes*/
/** @{ */
#define ICMP6_DST_UNREACH_NOROUTE 0 /**< no route to destination */
#define ICMP6_DST_UNREACH_ADMIN 1 /**< administratively prohibited */
#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /**< not a neighbor(obsolete) */
#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /**< beyond scope of source address */
#define ICMP6_DST_UNREACH_ADDR 3 /**< address unreachable */
#define ICMP6_DST_UNREACH_NOPORT 4 /**< port unreachable */
/** @} */
/** \name ICMPv6 Time Exceeded message codes*/
/** @{ */
#define ICMP6_TIME_EXCEED_TRANSIT 0 /**< ttl==0 in transit */
#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /**< ttl==0 in reass */
/** @} */
/** \name ICMPv6 Parameter Problem message codes*/
/** @{ */
#define ICMP6_PARAMPROB_HEADER 0 /**< erroneous header field */
#define ICMP6_PARAMPROB_NEXTHEADER 1 /**< unrecognized next header */
#define ICMP6_PARAMPROB_OPTION 2 /**< unrecognized option */
/** @} */
/** \brief Echo Request constant part length */
#define UIP_ICMP6_ECHO_REQUEST_LEN 4
/** \brief ICMPv6 Error message constant part length */
#define UIP_ICMP6_ERROR_LEN 4
/** \brief ICMPv6 Error message constant part */
typedef struct uip_icmp6_error{
uint32_t param;
} uip_icmp6_error;
/** \name ICMPv6 RFC4443 Message processing and sending */
/** @{ */
/** \
* brief Process an echo request
*
* Perform a few checks, then send an Echo reply. The reply is
* built here.
*/
void
uip_icmp6_echo_request_input(void);
/** \
* brief Process an echo reply
*
* Perform a few checks, then call applications to inform that an echo
* reply has been received.
*/
void
uip_icmp6_echo_reply_input(void);
/**
* \brief Send an icmpv6 error message
* \param type type of the error message
* \param code of the error message
* \param type 32 bit parameter of the error message, semantic depends on error
*/
void
uip_icmp6_error_output(uint8_t type, uint8_t code, uint32_t param);
/**
* \brief Send an icmpv6 message
* \param dest destination address of the message
* \param type type of the message
* \param code of the message
* \param payload_len length of the payload
*/
void
uip_icmp6_send(const uip_ipaddr_t *dest, int type, int code, int payload_len);
typedef void (* uip_icmp6_echo_reply_callback_t)(uip_ipaddr_t *source,
uint8_t ttl,
uint8_t *data,
uint16_t datalen);
struct uip_icmp6_echo_reply_notification {
struct uip_icmp6_echo_reply_notification *next;
uip_icmp6_echo_reply_callback_t callback;
};
/**
* \brief Add a callback function for ping replies
* \param n A struct uip_icmp6_echo_reply_notification that must have been allocated by the caller
* \param c A pointer to the callback function to be called
*
* This function adds a callback function to the list of
* callback functions that are called when an ICMP echo
* reply (ping reply) is received. This is used when
* implementing a ping protocol: attach a callback
* function to the ping reply, then send out a ping packet
* with uip_icmp6_send().
*
* The caller must have statically allocated a struct
* uip_icmp6_echo_reply_notification to hold the internal
* state of the callback function.
*
* When a ping reply packet is received, all registered
* callback functions are called. The callback functions
* must not modify the contents of the uIP buffer.
*/
void
uip_icmp6_echo_reply_callback_add(struct uip_icmp6_echo_reply_notification *n,
uip_icmp6_echo_reply_callback_t c);
/**
* \brief Remove a callback function for ping replies
* \param n A struct uip_icmp6_echo_reply_notification that must have been previously added with uip_icmp6_echo_reply_callback_add()
*
* This function removes a callback function from the list of
* callback functions that are called when an ICMP echo
* reply (ping reply) is received.
*/
void
uip_icmp6_echo_reply_callback_rm(struct uip_icmp6_echo_reply_notification *n);
/** @} */
#endif /*ICMP6_H_*/
/** @} */