/*
 * MOST NetServices "Light" V3.2.7.0.1796 MultiInstance Patch
 *
 * Copyright (C) 2015 Microchip Technology Germany II GmbH & Co. KG
 *
 * 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.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * You may also obtain this software under a propriety license from Microchip.
 * Please contact Microchip for further information.
 *
 */

/*!
 * \file
 * \brief Implementation of LLD Message Pool
 *
 * \cond MNS_INTERNAL_DOC
 * \addtogroup  G_PMF
 * @{
 */

/*------------------------------------------------------------------------------------------------*/
/* Includes                                                                                       */
/*------------------------------------------------------------------------------------------------*/
#include "mns_lldpool.h"
#include "mns_misc.h"
#include "mns_trace.h"

/*------------------------------------------------------------------------------------------------*/
/* Implementation                                                                                 */
/*------------------------------------------------------------------------------------------------*/
/*! \brief  Returns an unused LLD Tx message object back to the pool
 *  \param  self        The instance
 *  \param  owner_ptr   Assigns messages to the respective FIFO
 *  \param  mns_inst_id MOST NetServices instance ID
 */
void Lldp_Ctor(CLldPool *self, void *owner_ptr, uint8_t mns_inst_id)
{
    uint8_t cnt;
    MISC_MEM_SET(self, 0, sizeof(*self));

    Dl_Ctor(&self->list, mns_inst_id);

    for (cnt = 0U; cnt < LLDP_NUM_HANDLES; cnt++)         /* setup LLD Tx handles */
    {
        TR_ASSERT(mns_inst_id, "[FIFO]", (NULL == self->messages[cnt].msg_ptr));
        Dln_Ctor(&self->messages[cnt].node, &self->messages[cnt]);
        self->messages[cnt].owner_ptr = owner_ptr;
        Dl_InsertTail(&self->list, &self->messages[cnt].node);
    }
}

/*! \brief  Returns an unused LLD Tx message object back to the pool
 *  \param  self    The instance
 *  \param  msg_ptr The unused LLD Tx message object 
 */
void Lldp_ReturnTxToPool(CLldPool *self, Lld_IntTxMsg_t *msg_ptr)
{
    Dl_InsertTail(&self->list, &msg_ptr->node);
}

/*! \brief  Allocates an unused LLD Tx message object from the pool
 *  \param  self    The instance
 *  \return An internal LLD Tx message object or \c NULL if no message object is 
 *          available.
 */
Lld_IntTxMsg_t* Lldp_GetTxFromPool(CLldPool *self)
{
    CDlNode *node_ptr = NULL;
    Lld_IntTxMsg_t *handle_ptr = NULL;

    node_ptr = Dl_PopHead(&self->list);

    if (node_ptr != NULL)
    {
        handle_ptr = (Lld_IntTxMsg_t*)Dln_GetData(node_ptr);
    }

    return handle_ptr;
}

/*!
 * @}
 * \endcond
 */

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/* End of file                                                                                    */
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