202 lines
7.4 KiB
C
202 lines
7.4 KiB
C
/**
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* \addtogroup uip6
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* @{
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*/
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/**
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* \file
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* ICMPv6 echo request and error messages (RFC 4443)
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* \author Julien Abeille <jabeille@cisco.com>
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* \author Mathilde Durvy <mdurvy@cisco.com>
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*/
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/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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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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* 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. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#ifndef ICMP6_H_
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#define ICMP6_H_
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#include "net/ip/uip.h"
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/** \name ICMPv6 message types */
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/** @{ */
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#define ICMP6_DST_UNREACH 1 /**< dest unreachable */
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#define ICMP6_PACKET_TOO_BIG 2 /**< packet too big */
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#define ICMP6_TIME_EXCEEDED 3 /**< time exceeded */
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#define ICMP6_PARAM_PROB 4 /**< ip6 header bad */
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#define ICMP6_ECHO_REQUEST 128 /**< Echo request */
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#define ICMP6_ECHO_REPLY 129 /**< Echo reply */
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#define ICMP6_RS 133 /**< Router Solicitation */
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#define ICMP6_RA 134 /**< Router Advertisement */
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#define ICMP6_NS 135 /**< Neighbor Solicitation */
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#define ICMP6_NA 136 /**< Neighbor advertisement */
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#define ICMP6_REDIRECT 137 /**< Redirect */
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#define ICMP6_RPL 155 /**< RPL */
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#define ICMP6_PRIV_EXP_100 100 /**< Private Experimentation */
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#define ICMP6_PRIV_EXP_101 101 /**< Private Experimentation */
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#define ICMP6_PRIV_EXP_200 200 /**< Private Experimentation */
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#define ICMP6_PRIV_EXP_201 201 /**< Private Experimentation */
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#define ICMP6_ROLL_TM ICMP6_PRIV_EXP_200 /**< ROLL Trickle Multicast */
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/** @} */
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/** \name ICMPv6 Destination Unreachable message codes*/
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/** @{ */
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#define ICMP6_DST_UNREACH_NOROUTE 0 /**< no route to destination */
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#define ICMP6_DST_UNREACH_ADMIN 1 /**< administratively prohibited */
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#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /**< not a neighbor(obsolete) */
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#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /**< beyond scope of source address */
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#define ICMP6_DST_UNREACH_ADDR 3 /**< address unreachable */
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#define ICMP6_DST_UNREACH_NOPORT 4 /**< port unreachable */
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/** @} */
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/** \name ICMPv6 Time Exceeded message codes*/
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/** @{ */
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#define ICMP6_TIME_EXCEED_TRANSIT 0 /**< ttl==0 in transit */
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#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /**< ttl==0 in reass */
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/** @} */
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/** \name ICMPv6 Parameter Problem message codes*/
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/** @{ */
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#define ICMP6_PARAMPROB_HEADER 0 /**< erroneous header field */
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#define ICMP6_PARAMPROB_NEXTHEADER 1 /**< unrecognized next header */
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#define ICMP6_PARAMPROB_OPTION 2 /**< unrecognized option */
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/** @} */
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/** \brief Echo Request constant part length */
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#define UIP_ICMP6_ECHO_REQUEST_LEN 4
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/** \brief ICMPv6 Error message constant part length */
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#define UIP_ICMP6_ERROR_LEN 4
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/** \brief ICMPv6 Error message constant part */
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typedef struct uip_icmp6_error{
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uint32_t param;
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} uip_icmp6_error;
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/** \name ICMPv6 RFC4443 Message processing and sending */
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/** @{ */
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/** \
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* brief Process an echo request
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*
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* Perform a few checks, then send an Echo reply. The reply is
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* built here.
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*/
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void
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uip_icmp6_echo_request_input(void);
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/** \
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* brief Process an echo reply
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*
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* Perform a few checks, then call applications to inform that an echo
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* reply has been received.
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*/
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void
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uip_icmp6_echo_reply_input(void);
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/**
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* \brief Send an icmpv6 error message
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* \param type type of the error message
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* \param code of the error message
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* \param type 32 bit parameter of the error message, semantic depends on error
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*/
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void
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uip_icmp6_error_output(uint8_t type, uint8_t code, uint32_t param);
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/**
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* \brief Send an icmpv6 message
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* \param dest destination address of the message
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* \param type type of the message
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* \param code of the message
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* \param payload_len length of the payload
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*/
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void
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uip_icmp6_send(const uip_ipaddr_t *dest, int type, int code, int payload_len);
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typedef void (* uip_icmp6_echo_reply_callback_t)(uip_ipaddr_t *source,
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uint8_t ttl,
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uint8_t *data,
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uint16_t datalen);
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struct uip_icmp6_echo_reply_notification {
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struct uip_icmp6_echo_reply_notification *next;
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uip_icmp6_echo_reply_callback_t callback;
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};
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/**
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* \brief Add a callback function for ping replies
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* \param n A struct uip_icmp6_echo_reply_notification that must have been allocated by the caller
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* \param c A pointer to the callback function to be called
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*
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* This function adds a callback function to the list of
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* callback functions that are called when an ICMP echo
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* reply (ping reply) is received. This is used when
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* implementing a ping protocol: attach a callback
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* function to the ping reply, then send out a ping packet
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* with uip_icmp6_send().
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*
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* The caller must have statically allocated a struct
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* uip_icmp6_echo_reply_notification to hold the internal
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* state of the callback function.
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*
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* When a ping reply packet is received, all registered
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* callback functions are called. The callback functions
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* must not modify the contents of the uIP buffer.
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*/
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void
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uip_icmp6_echo_reply_callback_add(struct uip_icmp6_echo_reply_notification *n,
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uip_icmp6_echo_reply_callback_t c);
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/**
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* \brief Remove a callback function for ping replies
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* \param n A struct uip_icmp6_echo_reply_notification that must have been previously added with uip_icmp6_echo_reply_callback_add()
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*
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* This function removes a callback function from the list of
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* callback functions that are called when an ICMP echo
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* reply (ping reply) is received.
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*/
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void
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uip_icmp6_echo_reply_callback_rm(struct uip_icmp6_echo_reply_notification *n);
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/** @} */
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#endif /*ICMP6_H_*/
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/** @} */
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