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/*
* Copyright (C) 2008 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 ha_segments ha_segments
* @{ @ingroup ha
*/
#ifndef HA_SEGMENTS_H_
#define HA_SEGMENTS_H_
#include <daemon.h>
typedef struct ha_segments_t ha_segments_t;
typedef uint16_t segment_mask_t;
/**
* maximum number of segments
*/
#define SEGMENTS_MAX (sizeof(segment_mask_t)*8)
/**
* Get the bit in the mask of a segment
*/
#define SEGMENTS_BIT(segment) (0x01 << (segment - 1))
#include "ha_socket.h"
#include "ha_tunnel.h"
#include "ha_kernel.h"
/**
* Segmentation of peers into active and passive.
*/
struct ha_segments_t {
/**
* Implements listener interface to catch daemon shutdown.
*/
listener_t listener;
/**
* Activate a set of IKE_SAs identified by a segment.
*
* @param segment numerical segment to takeover, 0 for all
* @param notify whether to notify other nodes about activation
*/
void (*activate)(ha_segments_t *this, u_int segment, bool notify);
/**
* Deactivate a set of IKE_SAs identified by a segment.
*
* @param segment numerical segment to takeover, 0 for all
* @param notify whether to notify other nodes about deactivation
*/
void (*deactivate)(ha_segments_t *this, u_int segment, bool notify);
/**
* Handle a status message from the remote node.
*
* @param mask segments the remote node is serving actively
*/
void (*handle_status)(ha_segments_t *this, segment_mask_t mask);
/**
* Check if a given segment is currently active.
*
* @param segment segment to check
* @return TRUE if segment active
*/
bool (*is_active)(ha_segments_t *this, u_int segment);
/**
* Destroy a ha_segments_t.
*/
void (*destroy)(ha_segments_t *this);
};
/**
* Create a ha_segments instance.
*
* @param socket socket to communicate segment (de-)activation
* @param kernel interface to control segments at kernel level
* @param tunnel HA tunnel
* @param count number of segments the cluster uses
* @param node node, currently 1 or 0
* @param monitor should we use monitoring functionality
* @return segment object
*/
ha_segments_t *ha_segments_create(ha_socket_t *socket, ha_kernel_t *kernel,
ha_tunnel_t *tunnel, u_int count, u_int node,
bool monitor);
#endif /** HA_SEGMENTS_ @}*/
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