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/*
* Copyright (C) 2012 Tobias Brunner
* Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
/**
* @defgroup ipsec_processor ipsec_processor
* @{ @ingroup libipsec
*/
#ifndef IPSEC_PROCESSOR_H_
#define IPSEC_PROCESSOR_H_
#include "ip_packet.h"
#include "esp_packet.h"
typedef struct ipsec_processor_t ipsec_processor_t;
/**
* Callback called to deliver an inbound plaintext packet.
*
* @param data data supplied during registration of the callback
* @param packet plaintext IP packet to deliver
*/
typedef void (*ipsec_inbound_cb_t)(void *data, ip_packet_t *packet);
/**
* Callback called to send an ESP packet.
*
* @note The ESP packet currently comes without IP header (and without UDP
* header in case of UDP encapsulation)
*
* @param data data supplied during registration of the callback
* @param packet ESP packet to send
*/
typedef void (*ipsec_outbound_cb_t)(void *data, esp_packet_t *packet);
/**
* IPsec processor
*/
struct ipsec_processor_t {
/**
* Queue an inbound ESP packet for processing.
*
* @param packet the ESP packet to process
*/
void (*queue_inbound)(ipsec_processor_t *this, esp_packet_t *packet);
/**
* Queue an outbound plaintext IP packet for processing.
*
* @param packet the plaintext IP packet
*/
void (*queue_outbound)(ipsec_processor_t *this, ip_packet_t *packet);
/**
* Register the callback used to deliver inbound plaintext packets.
*
* @param cb the inbound callback function
* @param data optional data provided to callback
*/
void (*register_inbound)(ipsec_processor_t *this, ipsec_inbound_cb_t cb,
void *data);
/**
* Unregister a previously registered inbound callback.
*
* @param cb previously registered callback function
*/
void (*unregister_inbound)(ipsec_processor_t *this,
ipsec_inbound_cb_t cb);
/**
* Register the callback used to send outbound ESP packets.
*
* @param cb the outbound callback function
* @param data optional data provided to callback
*/
void (*register_outbound)(ipsec_processor_t *this, ipsec_outbound_cb_t cb,
void *data);
/**
* Unregister a previously registered outbound callback.
*
* @param cb previously registered callback function
*/
void (*unregister_outbound)(ipsec_processor_t *this,
ipsec_outbound_cb_t cb);
/**
* Destroy an ipsec_processor_t.
*/
void (*destroy)(ipsec_processor_t *this);
};
/**
* Create an ipsec_processor_t instance
*
* @return IPsec processor instance
*/
ipsec_processor_t *ipsec_processor_create();
#endif /** IPSEC_PROCESSOR_H_ @}*/
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