1 /* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

     2 /*

     3  * Copyright (c) 2009 MIRKO BANCHI

     4  *

     5  * This program is free software; you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License version 2 as 

     7  * published by the Free Software Foundation;

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program; if not, write to the Free Software

    16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    17  *

    18  * Author: Mirko Banchi <mk.banchi@gmail.com>

    19  */

    20 #ifndef MSDU_STANDARD_AGGREGATOR_H

    21 #define MSDU_STANDARD_AGGREGATOR_H

    22 

    23 #include "msdu-aggregator.h"

    24 

    25 namespace ns3 {

    26 

    27 class MsduStandardAggregator : public MsduAggregator

    28 {

    29 public:

    30 

    31   static TypeId GetTypeId (void);

    32   MsduStandardAggregator ();

    33   ~MsduStandardAggregator ();

    34   /**

    35    * \param packet Packet we have to insert into </i>aggregatedPacket</i>.

    36    * \param aggregatedPacket Packet that will contain <i>packet</i>, if aggregation is possible, 

    37    * \param src Source address of <i>packet</i>.

    38    * \param dest Destination address of <i>packet</i>.

    39    * 

    40    * This method performs an MSDU aggregation.

    41    * Returns true if <i>packet</i> can be aggregated to <i>aggregatedPacket</i>, false otherwise. 

    42    */

    43   virtual bool Aggregate (Ptr<const Packet> packet, Ptr<Packet> aggregatedPacket,

    44                           Mac48Address src, Mac48Address dest);

    45 private:

    46   /*  Calculates how much padding must be added to the end of packet.

    47       Each A-MSDU subframe is padded so that its length is multiple of 4 octects.

    48    */

    49   uint32_t CalculatePadding (Ptr<const Packet> packet);

    50 

    51   uint32_t m_maxAmsduLength;

    52 };

    53 

    54 }  //namespace ns3

    55 

    56 #endif /* MSDU_STANDARD_AGGREGATOR_H */