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Lines 1700-1706
TcpSocketBase::ReceivedAck (Ptr<Packet> packet, const TcpHeader& tcpHeader)
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| 1701 |
// RFC 6675 Section 5: 2nd, 3rd paragraph and point (A), (B) implementation |
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// RFC 6675 Section 5: 2nd, 3rd paragraph and point (A), (B) implementation |
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// are inside the function ProcessAck |
1702 |
// are inside the function ProcessAck |
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ProcessAck (ackNumber, scoreboardUpdated, oldHeadSequence); |
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ProcessAck (ackNumber, scoreboardUpdated, oldHeadSequence, packet->GetSize ()); |
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// If there is any data piggybacked, store it into m_rxBuffer |
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// If there is any data piggybacked, store it into m_rxBuffer |
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if (packet->GetSize () > 0) |
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if (packet->GetSize () > 0) |
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Lines 1715-1721
TcpSocketBase::ReceivedAck (Ptr<Packet> packet, const TcpHeader& tcpHeader)
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| 1716 |
void |
1716 |
void |
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TcpSocketBase::ProcessAck (const SequenceNumber32 &ackNumber, bool scoreboardUpdated, |
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TcpSocketBase::ProcessAck (const SequenceNumber32 &ackNumber, bool scoreboardUpdated, |
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const SequenceNumber32 &oldHeadSequence) |
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const SequenceNumber32 &oldHeadSequence, uint32_t size) |
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{ |
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{ |
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NS_LOG_FUNCTION (this << ackNumber << scoreboardUpdated); |
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NS_LOG_FUNCTION (this << ackNumber << scoreboardUpdated); |
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// RFC 6675, Section 5, 2nd paragraph: |
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// RFC 6675, Section 5, 2nd paragraph: |
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Lines 1742-1751
TcpSocketBase::ProcessAck (const SequenceNumber32 &ackNumber, bool scoreboardUpd
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* HighData (m_highTxMark) |
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* HighData (m_highTxMark) |
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*/ |
1743 |
*/ |
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| 1745 |
bool isDupack = m_sackEnabled ? |
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bool isDupack = scoreboardUpdated; |
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scoreboardUpdated |
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| 1747 |
: ackNumber == oldHeadSequence && |
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if (!m_sackEnabled) |
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ackNumber < m_tcb->m_highTxMark; |
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{ |
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// SYN and FIN are both OFF thanks to the state processing |
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isDupack = UnAckDataCount () > 0 && // condition (a) |
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size == 0 && // condition (b) |
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ackNumber == oldHeadSequence && // condition (d) |
| 1753 |
ackNumber < m_tcb->m_highTxMark; // safety consideration |
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} |
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1755 |
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NS_LOG_DEBUG ("ACK of " << ackNumber << |
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NS_LOG_DEBUG ("ACK of " << ackNumber << |
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" SND.UNA=" << oldHeadSequence << |
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" SND.UNA=" << oldHeadSequence << |