C++ (Cpp) ParaNdis_ProcessorNumberToGroupAffinity примеры использования

Пример #1

Файл: ParaNdis-RX.cpp Проект: illfelder/compute-windows-drivers

VOID CParaNdisRX::ProcessRxRing(CCHAR nCurrCpuReceiveQueue)
{
    pRxNetDescriptor pBufferDescriptor;
    unsigned int nFullLength;

#ifndef PARANDIS_SUPPORT_RSS
    UNREFERENCED_PARAMETER(nCurrCpuReceiveQueue);
#endif

    CLockedContext<CNdisSpinLock> autoLock(m_Lock);

    while (NULL != (pBufferDescriptor = (pRxNetDescriptor)m_VirtQueue.GetBuf(&nFullLength)))
    {
        /* The counter m_rxPacketsOutsideRing is increased when the packet is removed from ring; it is decreased
        in CParaNdisRX::ReuseReceiveBuffer either in case of error or when NDIS calls ParaNdis6_ReturnNetBufferLists
        indicating the return of a receive buffer under miniport driver ownership */

        m_Context->m_rxPacketsOutsideRing.AddRef();
        RemoveEntryList(&pBufferDescriptor->listEntry);
        m_NetNofReceiveBuffers--;

        BOOLEAN packetAnalyzisRC;

        packetAnalyzisRC = ParaNdis_PerformPacketAnalyzis(
#if PARANDIS_SUPPORT_RSS
            &m_Context->RSSParameters,
#endif
            &pBufferDescriptor->PacketInfo,
            pBufferDescriptor->PhysicalPages[PARANDIS_FIRST_RX_DATA_PAGE].Virtual,
            nFullLength - m_Context->nVirtioHeaderSize);


        if (!packetAnalyzisRC)
        {
            pBufferDescriptor->Queue->ReuseReceiveBufferNoLock(pBufferDescriptor);
            m_Context->Statistics.ifInErrors++;
            m_Context->Statistics.ifInDiscards++;
            continue;
        }

#ifdef PARANDIS_SUPPORT_RSS
        CCHAR nTargetReceiveQueueNum;
        GROUP_AFFINITY TargetAffinity;
        PROCESSOR_NUMBER TargetProcessor;

        nTargetReceiveQueueNum = ParaNdis_GetScalingDataForPacket(
            m_Context,
            &pBufferDescriptor->PacketInfo,
            &TargetProcessor);

        if (nTargetReceiveQueueNum == PARANDIS_RECEIVE_UNCLASSIFIED_PACKET)
        {
            ParaNdis_ReceiveQueueAddBuffer(&m_UnclassifiedPacketsQueue, pBufferDescriptor);
        }
        else
        {
            ParaNdis_ReceiveQueueAddBuffer(&m_Context->ReceiveQueues[nTargetReceiveQueueNum], pBufferDescriptor);

            if (nTargetReceiveQueueNum != nCurrCpuReceiveQueue)
            {
                ParaNdis_ProcessorNumberToGroupAffinity(&TargetAffinity, &TargetProcessor);
                ParaNdis_QueueRSSDpc(m_Context, m_messageIndex, &TargetAffinity);
            }
        }
#else
       ParaNdis_ReceiveQueueAddBuffer(&m_UnclassifiedPacketsQueue, pBufferDescriptor);
#endif
    }
}

Пример #2

Файл: ParaNdis-RX.cpp Проект: daynix/kvm-guest-drivers-windows

VOID CParaNdisRX::ProcessRxRing(CCHAR nCurrCpuReceiveQueue)
{
    pRxNetDescriptor pBufferDescriptor;
    unsigned int nFullLength;

#ifndef PARANDIS_SUPPORT_RSS
    UNREFERENCED_PARAMETER(nCurrCpuReceiveQueue);
#endif

    TDPCSpinLocker autoLock(m_Lock);

    while (NULL != (pBufferDescriptor = (pRxNetDescriptor)m_VirtQueue.GetBuf(&nFullLength)))
    {
        RemoveEntryList(&pBufferDescriptor->listEntry);
        m_NetNofReceiveBuffers--;

        BOOLEAN packetAnalysisRC;

        packetAnalysisRC = ParaNdis_PerformPacketAnalysis(
#if PARANDIS_SUPPORT_RSS
            &m_Context->RSSParameters,
#endif

            &pBufferDescriptor->PacketInfo,
            pBufferDescriptor->PhysicalPages[PARANDIS_FIRST_RX_DATA_PAGE].Virtual,
            nFullLength - m_Context->nVirtioHeaderSize);


        if (!packetAnalysisRC)
        {
            pBufferDescriptor->Queue->ReuseReceiveBufferNoLock(pBufferDescriptor);
            m_Context->Statistics.ifInErrors++;
            m_Context->Statistics.ifInDiscards++;
            continue;
        }

#ifdef PARANDIS_SUPPORT_RSS
        CCHAR nTargetReceiveQueueNum;
        GROUP_AFFINITY TargetAffinity;
        PROCESSOR_NUMBER TargetProcessor;

        nTargetReceiveQueueNum = ParaNdis_GetScalingDataForPacket(
            m_Context,
            &pBufferDescriptor->PacketInfo,
            &TargetProcessor);

        if (nTargetReceiveQueueNum == PARANDIS_RECEIVE_UNCLASSIFIED_PACKET)
        {
            ParaNdis_ReceiveQueueAddBuffer(&m_UnclassifiedPacketsQueue, pBufferDescriptor);
        }
        else
        {
            ParaNdis_ReceiveQueueAddBuffer(&m_Context->ReceiveQueues[nTargetReceiveQueueNum], pBufferDescriptor);

            if (nTargetReceiveQueueNum != nCurrCpuReceiveQueue)
            {
                ParaNdis_ProcessorNumberToGroupAffinity(&TargetAffinity, &TargetProcessor);
                ParaNdis_QueueRSSDpc(m_Context, m_messageIndex, &TargetAffinity);
            }
        }
#else
       ParaNdis_ReceiveQueueAddBuffer(&m_UnclassifiedPacketsQueue, pBufferDescriptor);
#endif
    }
}