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/*
* Copyright (C) 2016 Tobias Brunner
* Copyright (C) 2007 Martin Willi
* HSR 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 child_rekey child_rekey
* @{ @ingroup tasks_v2
*/
#ifndef CHILD_REKEY_H_
#define CHILD_REKEY_H_
typedef struct child_rekey_t child_rekey_t;
#include <library.h>
#include <sa/ike_sa.h>
#include <sa/child_sa.h>
#include <sa/task.h>
/**
* Task of type TASK_CHILD_REKEY, rekey an established CHILD_SA.
*/
struct child_rekey_t {
/**
* Implements the task_t interface
*/
task_t task;
/**
* Check if the given SA is the redundant CHILD_SA created during a rekey
* collision.
*
* This is called if the other peer deletes the redundant SA before we were
* able to handle the CREATE_CHILD_SA response.
*
* @param child CHILD_SA to check
* @return TRUE if the SA is the redundant CHILD_SA
*/
bool (*is_redundant)(child_rekey_t *this, child_sa_t *child);
/**
* Register a rekeying/delete task which collides with this one
*
* If two peers initiate rekeying at the same time, the collision must
* be handled gracefully. The task manager is aware of what exchanges
* are going on and notifies the active task by passing the passive.
*
* @param other passive task (adopted)
*/
void (*collide)(child_rekey_t* this, task_t *other);
};
/**
* Create a new TASK_CHILD_REKEY task.
*
* @param ike_sa IKE_SA this task works for
* @param protocol protocol of CHILD_SA to rekey, PROTO_NONE as responder
* @param spi inbound SPI of CHILD_SA to rekey
* @return child_rekey task to handle by the task_manager
*/
child_rekey_t *child_rekey_create(ike_sa_t *ike_sa, protocol_id_t protocol,
uint32_t spi);
#endif /** CHILD_REKEY_H_ @}*/
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