108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/*
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* Copyright (C) 2012-2014 Reto Buerki
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* Copyright (C) 2012 Adrian-Ken Rueegsegger
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* 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 tkm-kernel-sad kernel sad
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* @{ @ingroup tkm
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*/
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#ifndef TKM_KERNEL_SAD_H_
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#define TKM_KERNEL_SAD_H_
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#include <networking/host.h>
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#include <tkm/types.h>
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typedef struct tkm_kernel_sad_t tkm_kernel_sad_t;
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/**
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* The TKM kernel SAD (security association database) stores information about
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* CHILD SAs.
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*/
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struct tkm_kernel_sad_t {
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/**
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* Insert new SAD entry with specified parameters.
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*
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* @param esa_id ESP SA context identifier
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* @param reqid reqid of the SA
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* @param src source address of CHILD SA
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* @param dst destination address of CHILD SA
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* @param spi_loc Local SPI of CHILD SA
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* @param spi_rem Remote SPI of CHILD SA
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* @param proto protocol of CHILD SA (ESP/AH)
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* @return TRUE if entry was inserted, FALSE otherwise
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*/
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bool (*insert)(tkm_kernel_sad_t * const this, const esa_id_type esa_id,
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const uint32_t reqid, const host_t * const src,
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const host_t * const dst, const uint32_t spi_loc,
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const uint32_t spi_rem, const uint8_t proto);
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/**
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* Get ESA id for entry with given parameters.
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*
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* @param src source address of CHILD SA
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* @param dst destination address of CHILD SA
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* @param spi Remote SPI of CHILD SA
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* @param proto protocol of CHILD SA (ESP/AH)
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* @return ESA id of entry if found, 0 otherwise
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*/
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esa_id_type (*get_esa_id)(tkm_kernel_sad_t * const this,
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const host_t * const src, const host_t * const dst,
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const uint32_t spi, const uint8_t proto);
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/**
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* Get ESA id for entry associated with same security policy as the
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* specified ESA.
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*
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* @param esa_id id of ESA identifying the security policy
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* @return ESA id of entry if found, 0 otherwise
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*/
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esa_id_type (*get_other_esa_id)(tkm_kernel_sad_t * const this,
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const esa_id_type esa_id);
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/**
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* Get destination host for entry with given parameters.
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*
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* @param reqid reqid of CHILD SA
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* @param spi Remote SPI of CHILD SA
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* @param proto protocol of CHILD SA (ESP/AH)
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* @return destination host of entry if found, NULL otherwise
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*/
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host_t * (*get_dst_host)(tkm_kernel_sad_t * const this,
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const uint32_t reqid, const uint32_t spi, const uint8_t proto);
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/**
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* Remove entry with given ESA id from SAD.
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*
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* @param esa_id ESA identifier of entry to remove
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* @return TRUE if entry was removed, FALSE otherwise
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*/
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bool (*remove)(tkm_kernel_sad_t * const this, const esa_id_type esa_id);
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/**
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* Destroy a tkm_kernel_sad instance.
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*/
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void (*destroy)(tkm_kernel_sad_t *this);
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};
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/**
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* Create a TKM kernel SAD instance.
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*/
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tkm_kernel_sad_t *tkm_kernel_sad_create();
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#endif /** TKM_KERNEL_SAD_H_ @}*/
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