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/*
* Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License v2.1. See the file LICENSE in the top level directory for
* more details.
*/
/**
* @defgroup net_gnrc_icmpv6 ICMPv6
* @ingroup net_gnrc_ipv6
* @brief GNRC's implementation of ICMPv6
*
* @see <a href="https://tools.ietf.org/html/rfc4443">
* RFC 4443
* </a>
* @{
*
* @file
* @brief Definitions for GNRC's ICMPv6 implementation
*
* @author Martine Lenders <mlenders@inf.fu-berlin.de>
*
* @todo build error messages
*/
#ifndef GNRC_ICMPV6_H_
#define GNRC_ICMPV6_H_
#include "kernel_types.h"
#include "net/icmpv6.h"
#include "net/gnrc/pkt.h"
#include "net/gnrc/icmpv6/echo.h"
#include "net/gnrc/icmpv6/error.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Demultiplexes a received ICMPv6 packet according to its type field.
*
* @param[in] iface The receiving interface
* @param[in] pkt The packet to demultiplex.
*/
void gnrc_icmpv6_demux(kernel_pid_t iface, gnrc_pktsnip_t *pkt);
/**
* @brief Builds an ICMPv6 message for sending.
*
* @param[in] next Next packet snip in the new packet.
* @param[in] type Type for the ICMPv6 message.
* @param[in] code Code for the ICMPv6 message.
* @param[in] size Size of the ICMPv6 message (needs do be >
* `sizeof(icmpv6_hdr_t)`).
*
* @return The ICMPv6 message on success
* @return NULL, on failure
*/
gnrc_pktsnip_t *gnrc_icmpv6_build(gnrc_pktsnip_t *next, uint8_t type, uint8_t code, size_t size);
/**
* @brief Calculates the checksum for an ICMPv6 packet.
*
* @param[in] hdr The header the checksum should be calculated
* for.
* @param[in] pseudo_hdr The header the pseudo header shall be generated
* from. NULL if none is needed.
*
* @return 0, on success.
* @return -EINVAL, if gnrc_pktsnip_t::type of @p pkt was not GNRC_NETTYPE_ICMPV6
* @return -ENOENT, if gnrc_pktsnip_t::type of @p pseudo_hdr was not
* GNRC_NETTYPE_IPV6
*/
int gnrc_icmpv6_calc_csum(gnrc_pktsnip_t *hdr, gnrc_pktsnip_t *pseudo_hdr);
#ifdef __cplusplus
}
#endif
#endif /* GNRC_ICMPV6_H_ */
/**
* @}
*/
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