master/datagram_pair.c
author Florian Pose <fp@igh-essen.com>
Wed, 04 Jan 2012 15:57:10 +0100
branchredundancy
changeset 2308 f842ca3436ba
parent 2269 1d0711235a61
child 2367 8527429b6137
permissions -rw-r--r--
Fixed possible null pointer dereference in ethercat tool.
/******************************************************************************
 *
 *  $Id$
 *
 *  Copyright (C) 2006-2012  Florian Pose, Ingenieurgemeinschaft IgH
 *
 *  This file is part of the IgH EtherCAT Master.
 *
 *  The IgH EtherCAT Master is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License version 2, as
 *  published by the Free Software Foundation.
 *
 *  The IgH EtherCAT Master 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.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with the IgH EtherCAT Master; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *  ---
 *
 *  The license mentioned above concerns the source code only. Using the
 *  EtherCAT technology and brand is only permitted in compliance with the
 *  industrial property and similar rights of Beckhoff Automation GmbH.
 *
 *****************************************************************************/

/**
   \file
   EtherCAT datagram pair methods.
*/

/*****************************************************************************/

#include "datagram_pair.h"

/*****************************************************************************/

/** Datagram pair constructor.
 */
void ec_datagram_pair_init(
        ec_datagram_pair_t *pair /**< Datagram pair. */
        )
{
    unsigned int i;

    INIT_LIST_HEAD(&pair->list);

    for (i = 0; i < EC_NUM_DEVICES; i++) {
        ec_datagram_init(&pair->datagrams[i]);
    }
}

/*****************************************************************************/

/** Datagram pair destructor.
 */
void ec_datagram_pair_clear(
        ec_datagram_pair_t *pair /**< Datagram pair. */
        )
{
    unsigned int i;

    for (i = 0; i < EC_NUM_DEVICES; i++) {
        ec_datagram_clear(&pair->datagrams[i]);
    }
}

/*****************************************************************************/