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Annotation of embedaddon/strongswan/src/libcharon/sa/task_manager.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2011 Tobias Brunner
        !             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: #include "task_manager.h"
        !            17: 
        !            18: #include <math.h>
        !            19: #include <sa/ikev1/task_manager_v1.h>
        !            20: #include <sa/ikev2/task_manager_v2.h>
        !            21: 
        !            22: /*
        !            23:  * See header
        !            24:  */
        !            25: u_int task_manager_total_retransmit_timeout()
        !            26: {
        !            27:        double timeout, base, limit = 0, total = 0;
        !            28:        int tries, i;
        !            29: 
        !            30:        tries = lib->settings->get_int(lib->settings, "%s.retransmit_tries",
        !            31:                                                                   RETRANSMIT_TRIES, lib->ns);
        !            32:        base = lib->settings->get_double(lib->settings, "%s.retransmit_base",
        !            33:                                                                         RETRANSMIT_BASE, lib->ns);
        !            34:        timeout = lib->settings->get_double(lib->settings, "%s.retransmit_timeout",
        !            35:                                                                                RETRANSMIT_TIMEOUT, lib->ns);
        !            36:        limit = lib->settings->get_double(lib->settings, "%s.retransmit_limit",
        !            37:                                                                          0, lib->ns);
        !            38: 
        !            39:        for (i = 0; i <= tries; i++)
        !            40:        {
        !            41:                double interval = timeout * pow(base, i);
        !            42:                if (limit)
        !            43:                {
        !            44:                        interval = min(interval, limit);
        !            45:                }
        !            46:                total += interval;
        !            47:        }
        !            48:        return (u_int)total;
        !            49: }
        !            50: 
        !            51: /*
        !            52:  * See header
        !            53:  */
        !            54: task_manager_t *task_manager_create(ike_sa_t *ike_sa)
        !            55: {
        !            56:        switch (ike_sa->get_version(ike_sa))
        !            57:        {
        !            58:                case IKEV1:
        !            59: #ifdef USE_IKEV1
        !            60:                        return &task_manager_v1_create(ike_sa)->task_manager;
        !            61: #endif
        !            62:                        break;
        !            63:                case IKEV2:
        !            64: #ifdef USE_IKEV2
        !            65:                        return &task_manager_v2_create(ike_sa)->task_manager;
        !            66: #endif
        !            67:                        break;
        !            68:                default:
        !            69:                        break;
        !            70:        }
        !            71:        return NULL;
        !            72: }
        !            73: