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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_error ICMPv6 error messages
* @ingroup net_gnrc_icmpv6
* @brief ICMPv6 error message handling and creation
* @{
*
* @file
* @brief ICMPv6 error message definitions
*
* @author Martine Lenders <mlenders@inf.fu-berlin.de>
*/
#ifndef GNRC_ICMPV6_ERROR_H_
#define GNRC_ICMPV6_ERROR_H_
#include <errno.h>
#include <stdint.h>
#include "net/icmpv6.h"
#include "net/ipv6/hdr.h"
#include "net/gnrc/ipv6.h"
#include "net/gnrc/netapi.h"
#include "net/gnrc/pkt.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Builds an ICMPv6 destination unreachable message for sending.
*
* @param[in] code The code for the message @see net/icmpv6.h.
* @param[in] orig_pkt The invoking packet.
*
* @return The destination unreachable message on success.
* @return NULL, on failure.
*/
gnrc_pktsnip_t *gnrc_icmpv6_error_dst_unr_build(uint8_t code, gnrc_pktsnip_t *orig_pkt);
/**
* @brief Builds an ICMPv6 packet too big message for sending.
*
* @param[in] mtu The maximum transission unit of the next-hop link.
* @param[in] orig_pkt The invoking packet.
*
* @return The packet too big message on success.
* @return NULL, on failure.
*/
gnrc_pktsnip_t *gnrc_icmpv6_error_pkt_too_big_build(uint32_t mtu, gnrc_pktsnip_t *orig_pkt);
/**
* @brief Builds an ICMPv6 time exceeded message for sending.
*
* @param[in] code The code for the message @see net/icmpv6.h.
* @param[in] orig_pkt The invoking packet.
*
* @return The time exceeded message on success.
* @return NULL, on failure.
*/
gnrc_pktsnip_t *gnrc_icmpv6_error_time_exc_build(uint8_t code, gnrc_pktsnip_t *orig_pkt);
/**
* @brief Builds an ICMPv6 parameter problem message for sending.
*
* @param[in] code The code for the message @see net/icmpv6.h.
* @param[in] ptr Pointer to the errorneous octet in @p orig_pkt.
* @param[in] orig_pkt The invoking packet.
*
* @return The parameter problem message on success.
* @return NULL, on failure.
*/
gnrc_pktsnip_t *gnrc_icmpv6_error_param_prob_build(uint8_t code, void *ptr,
gnrc_pktsnip_t *orig_pkt);
/**
* @brief Sends an ICMPv6 destination unreachable message for sending.
*
* @param[in] code The code for the message @see net/icmpv6.h.
* @param[in] orig_pkt The invoking packet.
*/
static inline void gnrc_icmpv6_error_dst_unr_send(uint8_t code, gnrc_pktsnip_t *orig_pkt)
{
gnrc_pktsnip_t *pkt = gnrc_icmpv6_error_dst_unr_build(code, orig_pkt);
if (pkt != NULL) {
gnrc_netapi_send(gnrc_ipv6_pid, pkt);
}
#ifdef MODULE_GNRC_PKTBUF
gnrc_pktbuf_release_error(orig_pkt, EHOSTUNREACH);
#else
(void)orig_pkt;
#endif
}
/**
* @brief Sends an ICMPv6 packet too big message for sending.
*
* @param[in] mtu The maximum transission unit of the next-hop link.
* @param[in] orig_pkt The invoking packet.
*/
static inline void gnrc_icmpv6_error_pkt_too_big_send(uint32_t mtu, gnrc_pktsnip_t *orig_pkt)
{
gnrc_pktsnip_t *pkt = gnrc_icmpv6_error_pkt_too_big_build(mtu, orig_pkt);
if (pkt != NULL) {
gnrc_netapi_send(gnrc_ipv6_pid, pkt);
}
#ifdef MODULE_GNRC_PKTBUF
gnrc_pktbuf_release_error(orig_pkt, EMSGSIZE);
#else
(void)orig_pkt;
#endif
}
/**
* @brief Sends an ICMPv6 time exceeded message for sending.
*
* @param[in] code The code for the message @see net/icmpv6.h.
* @param[in] orig_pkt The invoking packet.
*/
static inline void gnrc_icmpv6_error_time_exc_send(uint8_t code, gnrc_pktsnip_t *orig_pkt)
{
gnrc_pktsnip_t *pkt = gnrc_icmpv6_error_time_exc_build(code, orig_pkt);
if (pkt != NULL) {
gnrc_netapi_send(gnrc_ipv6_pid, pkt);
}
#ifdef MODULE_GNRC_PKTBUF
gnrc_pktbuf_release_error(orig_pkt, ETIMEDOUT);
#else
(void)orig_pkt;
#endif
}
/**
* @brief Sends an ICMPv6 parameter problem message for sending.
*
* @param[in] code The code for the message @see net/icmpv6.h.
* @param[in] ptr Pointer to the errorneous octet in @p orig_pkt.
* @param[in] orig_pkt The invoking packet.
*/
static inline void gnrc_icmpv6_error_param_prob_send(uint8_t code, void *ptr,
gnrc_pktsnip_t *orig_pkt)
{
gnrc_pktsnip_t *pkt = gnrc_icmpv6_error_param_prob_build(code, ptr, orig_pkt);
if (pkt != NULL) {
gnrc_netapi_send(gnrc_ipv6_pid, pkt);
}
#ifdef MODULE_GNRC_PKTBUF
gnrc_pktbuf_release_error(orig_pkt, EINVAL);
#else
(void)orig_pkt;
#endif
}
#ifdef __cplusplus
}
#endif
#endif /* GNRC_ICMPV6_ERROR_H_ */
/** @} */
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