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1.1 misho 1: /* 2: * Copyright (C) 2008 Martin Willi 3: * HSR Hochschule fuer Technik Rapperswil 4: * 5: * This program is free software; you can redistribute it and/or modify it 6: * under the terms of the GNU General Public License as published by the 7: * Free Software Foundation; either version 2 of the License, or (at your 8: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. 9: * 10: * This program is distributed in the hope that it will be useful, but 11: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 12: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13: * for more details. 14: */ 15: 16: /** 17: * @defgroup ha_segments ha_segments 18: * @{ @ingroup ha 19: */ 20: 21: #ifndef HA_SEGMENTS_H_ 22: #define HA_SEGMENTS_H_ 23: 24: #include <daemon.h> 25: 26: typedef struct ha_segments_t ha_segments_t; 27: 28: typedef uint16_t segment_mask_t; 29: 30: /** 31: * maximum number of segments 32: */ 33: #define SEGMENTS_MAX (sizeof(segment_mask_t)*8) 34: 35: /** 36: * Get the bit in the mask of a segment 37: */ 38: #define SEGMENTS_BIT(segment) (0x01 << (segment - 1)) 39: 40: #include "ha_socket.h" 41: #include "ha_tunnel.h" 42: #include "ha_kernel.h" 43: 44: /** 45: * Segmentation of peers into active and passive. 46: */ 47: struct ha_segments_t { 48: 49: /** 50: * Implements listener interface to catch daemon shutdown. 51: */ 52: listener_t listener; 53: 54: /** 55: * Activate a set of IKE_SAs identified by a segment. 56: * 57: * @param segment numerical segment to takeover, 0 for all 58: * @param notify whether to notify other nodes about activation 59: */ 60: void (*activate)(ha_segments_t *this, u_int segment, bool notify); 61: 62: /** 63: * Deactivate a set of IKE_SAs identified by a segment. 64: * 65: * @param segment numerical segment to takeover, 0 for all 66: * @param notify whether to notify other nodes about deactivation 67: */ 68: void (*deactivate)(ha_segments_t *this, u_int segment, bool notify); 69: 70: /** 71: * Handle a status message from the remote node. 72: * 73: * @param mask segments the remote node is serving actively 74: */ 75: void (*handle_status)(ha_segments_t *this, segment_mask_t mask); 76: 77: /** 78: * Check if a given segment is currently active. 79: * 80: * @param segment segment to check 81: * @return TRUE if segment active 82: */ 83: bool (*is_active)(ha_segments_t *this, u_int segment); 84: 85: /** 86: * Return the number of segments 87: * 88: * @return number of segments 89: */ 90: u_int (*count)(ha_segments_t *this); 91: 92: /** 93: * Destroy a ha_segments_t. 94: */ 95: void (*destroy)(ha_segments_t *this); 96: }; 97: 98: /** 99: * Create a ha_segments instance. 100: * 101: * @param socket socket to communicate segment (de-)activation 102: * @param kernel interface to control segments at kernel level 103: * @param tunnel HA tunnel 104: * @param count number of segments the cluster uses 105: * @param node node, currently 1 or 0 106: * @param monitor should we use monitoring functionality 107: * @return segment object 108: */ 109: ha_segments_t *ha_segments_create(ha_socket_t *socket, ha_kernel_t *kernel, 110: ha_tunnel_t *tunnel, u_int count, u_int node, 111: bool monitor); 112: 113: #endif /** HA_SEGMENTS_ @}*/