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