author | Andrey Mazo <mazo@iitp.ru> |
Fri, 23 Apr 2010 15:09:31 +0400 | |
changeset 6273 | 8d70de29d514 |
parent 5948 | 34bd93988e2b |
child 6588 | a83484625502 |
permissions | -rw-r--r-- |
5948 | 1 |
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */ |
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/* |
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* Copyright (c) 2009 MIRKO BANCHI |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation; |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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* Author: Mirko Banchi <mk.banchi@gmail.com> |
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*/ |
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#ifndef CTRL_HEADERS_H |
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#define CTRL_HEADERS_H |
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#include "ns3/header.h" |
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namespace ns3 { |
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/** Headers for Block ack request and response. |
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* 802.11n standard includes three types of block ack: |
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* - Basic block ack (unique type in 802.11e) |
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* - Compressed block ack |
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* - Multi-TID block ack |
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* For now only basic block ack and compressed block ack |
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* are supported. |
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* Basic block ack is also default variant. |
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*/ |
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enum BlockAckType |
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{ |
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BASIC_BLOCK_ACK, |
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COMPRESSED_BLOCK_ACK, |
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MULTI_TID_BLOCK_ACK |
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}; |
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class CtrlBAckRequestHeader : public Header { |
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public: |
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CtrlBAckRequestHeader (); |
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~CtrlBAckRequestHeader (); |
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static TypeId GetTypeId (void); |
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virtual TypeId GetInstanceTypeId (void) const; |
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virtual void Print (std::ostream &os) const; |
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virtual uint32_t GetSerializedSize (void) const; |
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virtual void Serialize (Buffer::Iterator start) const; |
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virtual uint32_t Deserialize (Buffer::Iterator start); |
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void SetHtImmediateAck (bool immediateAck); |
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void SetType (enum BlockAckType type); |
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void SetTidInfo (uint8_t tid); |
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void SetStartingSequence (uint16_t seq); |
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bool MustSendHtImmediateAck (void) const; |
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uint8_t GetTidInfo (void) const; |
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uint16_t GetStartingSequence (void) const; |
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bool IsBasic (void) const; |
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bool IsCompressed (void) const; |
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bool IsMultiTid (void) const; |
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uint16_t GetStartingSequenceControl (void) const; |
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private: |
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void SetStartingSequenceControl (uint16_t seqControl); |
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uint16_t GetBarControl (void) const; |
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void SetBarControl (uint16_t bar); |
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/** |
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* The lsb bit of the BAR control field is used only for the |
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* HT (High Throughput) delayed block ack configuration. |
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* For now only non HT immediate block ack is implemented so this field |
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* is here only for a future implementation of HT delayed variant. |
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*/ |
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bool m_barAckPolicy; |
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bool m_multiTid; |
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bool m_compressed; |
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uint16_t m_tidInfo; |
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uint16_t m_startingSeq; |
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}; |
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class CtrlBAckResponseHeader : public Header { |
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public: |
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CtrlBAckResponseHeader (); |
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~CtrlBAckResponseHeader (); |
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static TypeId GetTypeId (void); |
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virtual TypeId GetInstanceTypeId (void) const; |
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virtual void Print (std::ostream &os) const; |
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virtual uint32_t GetSerializedSize (void) const; |
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virtual void Serialize (Buffer::Iterator start) const; |
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virtual uint32_t Deserialize (Buffer::Iterator start); |
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void SetHtImmediateAck (bool immeadiateAck); |
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void SetType (enum BlockAckType type); |
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void SetTidInfo (uint8_t tid); |
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void SetStartingSequence (uint16_t seq); |
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bool MustSendHtImmediateAck (void) const; |
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uint8_t GetTidInfo (void) const; |
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uint16_t GetStartingSequence (void) const; |
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bool IsBasic (void) const; |
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bool IsCompressed (void) const; |
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bool IsMultiTid (void) const; |
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void SetReceivedPacket (uint16_t seq); |
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void SetReceivedFragment (uint16_t seq, uint8_t frag); |
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bool IsPacketReceived (uint16_t seq) const; |
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bool IsFragmentReceived (uint16_t seq, uint8_t frag) const; |
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uint16_t GetStartingSequenceControl (void) const; |
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void SetStartingSequenceControl (uint16_t seqControl); |
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private: |
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uint16_t GetBaControl (void) const; |
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void SetBaControl (uint16_t bar); |
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Buffer::Iterator SerializeBitmap (Buffer::Iterator start) const; |
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Buffer::Iterator DeserializeBitmap (Buffer::Iterator start); |
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/** |
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* This function is used to correctly index in both bitmap |
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6273
8d70de29d514
spell check, mostly in comments.
Andrey Mazo <mazo@iitp.ru>
parents:
5948
diff
changeset
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* and compressed bitmap, one bit or one block of 16 bits respectively. |
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* If we are using basic block ack, return value represents index of |
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* block of 16 bits for packet having sequence number equals to <i>seq</i>. |
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* If we are using compressed block ack, return value represents bit |
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* to set to 1 in the compressed bitmap to indicate that packet having |
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* sequence number equals to <i>seq</i> was correctly received. |
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* |
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* for more details see 7.2.1.8 in IEEE 802.11n/D4.00 |
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*/ |
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uint8_t IndexInBitmap (uint16_t seq) const; |
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/** |
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* The lsb bit of the BA control field is used only for the |
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* HT (High Throughput) delayed block ack configuration. |
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* For now only non HT immediate block ack is implemented so this field |
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* is here only for a future implementation of HT delayed variant. |
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*/ |
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bool m_baAckPolicy; |
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bool m_multiTid; |
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bool m_compressed; |
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uint16_t m_tidInfo; |
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uint16_t m_startingSeq; |
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union { |
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uint16_t m_bitmap[64]; |
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uint64_t m_compressedBitmap; |
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} bitmap; |
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}; |
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} //namespace ns3 |
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#endif /* CTRL_HEADERS_H */ |