C++ (Cpp) NdisAdjustMdlLength Exemples

Exemple #1

Fichier : ParaNdis6-Impl.cpp Projet : yikfang/kvm-guest-drivers-windows

void ParaNdis_UnbindRxBufferFromPacket(
    pRxNetDescriptor p)
{
    PMDL NextMdlLinkage = p->Holder;

    while(NextMdlLinkage != NULL)
    {
        PMDL pThisMDL = NextMdlLinkage;
        NextMdlLinkage = NDIS_MDL_LINKAGE(pThisMDL);

        NdisAdjustMdlLength(pThisMDL, PAGE_SIZE);
        NdisFreeMdl(pThisMDL);
    }
}

Exemple #2

Fichier : ParaNdis6-Impl.cpp Projet : sun363587351/kvm-guest-drivers-windows

void ParaNdis_UnbindRxBufferFromPacket(
    pRxNetDescriptor p)
{
    PMDL NextMdlLinkage = p->Holder;
    ULONG ulPageDescIndex = PARANDIS_FIRST_RX_DATA_PAGE;

    while(NextMdlLinkage != NULL)
    {
        PMDL pThisMDL = NextMdlLinkage;
        NextMdlLinkage = NDIS_MDL_LINKAGE(pThisMDL);

        NdisAdjustMdlLength(pThisMDL, p->PhysicalPages[ulPageDescIndex].size);
        NdisFreeMdl(pThisMDL);
        ulPageDescIndex++;
    }
}

Exemple #3

Fichier : ParaNdis6-Impl.cpp Projet : yikfang/kvm-guest-drivers-windows

static
void ParaNdis_AdjustRxBufferHolderLength(
    pRxNetDescriptor p,
    ULONG ulDataOffset)
{
    PMDL NextMdlLinkage = p->Holder;
    ULONG ulBytesLeft = p->PacketInfo.dataLength + ulDataOffset;

    while(NextMdlLinkage != NULL)
    {
        ULONG ulThisMdlBytes = min(PAGE_SIZE, ulBytesLeft);
        NdisAdjustMdlLength(NextMdlLinkage, ulThisMdlBytes);
        ulBytesLeft -= ulThisMdlBytes;
        NextMdlLinkage = NDIS_MDL_LINKAGE(NextMdlLinkage);
    }
    NETKVM_ASSERT(ulBytesLeft == 0);
}

Exemple #4

Fichier : ParaNdis6-Impl.cpp Projet : sun363587351/kvm-guest-drivers-windows

static
void ParaNdis_AdjustRxBufferHolderLength(
    pRxNetDescriptor p,
    ULONG ulDataOffset)
{
    PMDL NextMdlLinkage = p->Holder;
    ULONG ulBytesLeft = p->PacketInfo.dataLength + ulDataOffset;
    ULONG ulPageDescIndex = PARANDIS_FIRST_RX_DATA_PAGE;

    while(NextMdlLinkage != NULL)
    {
        ULONG ulThisMdlBytes = min(p->PhysicalPages[ulPageDescIndex].size, ulBytesLeft);
        NdisAdjustMdlLength(NextMdlLinkage, ulThisMdlBytes);
        ulBytesLeft -= ulThisMdlBytes;
        NextMdlLinkage = NDIS_MDL_LINKAGE(NextMdlLinkage);
        ulPageDescIndex++;
    }
    NETKVM_ASSERT(ulBytesLeft == 0);
}

Exemple #5

Fichier : ndshared.c Projet : NemProjects/WLAN

NDIS_STATUS
shared_flush(
	IN shared_info_t *shared,
	IN uchar *va,
	IN ULONG pa,
	IN ULONG len,
	IN BOOLEAN writetodevice
)
{
#ifndef NDIS60
	PNDIS_BUFFER b;
	NDIS_STATUS status;
	NDIS_PHYSICAL_ADDRESS npa;

	/* if receive, buffer must begin and end on a cacheline boundary */
	if (!writetodevice) {
		ASSERT(ISALIGNED((uintptr)va, shared->cacheline));
		len = ROUNDUP(len, shared->cacheline);
	}

	/* alloc a temp buffer descriptor */
	NdisAllocateBuffer(&status, &b, shared->rxbufferpool, va, len);
	if (status != NDIS_STATUS_SUCCESS) {
		ND_ERROR(("%s%d: shared_flush: NdisAllocateBuffer error 0x%x\n",
			shared->id, shared->unit, status));
		return status;
	}

	/* flush processor cache */
	NdisAdjustBufferLength(b, len);
	NdisFlushBuffer(b, writetodevice);

	npa.HighPart = 0;
	npa.LowPart = pa;

#ifndef USEWDK


	if (!writetodevice)
		NdisMUpdateSharedMemory(shared->adapterhandle, len, va, npa);

#endif /* USEWDK */

	/* free the temp buffer descriptor */
	NdisFreeBuffer(b);
#else /* NDIS60 */
	PMDL b;

	/* if receive, buffer must begin and end on a cacheline boundary */
	if (!writetodevice) {
		ASSERT(ISALIGNED((uintptr)va, shared->cacheline));
		len = ROUNDUP(len, shared->cacheline);
	}

	/* alloc a temp MDL */
	b = NdisAllocateMdl(shared->adapterhandle, va, len);
	if (b == NULL) {
		ND_ERROR(("%s%d: shared_flush: NdisAllocateMdl error\n", shared->id, shared->unit));
		return NDIS_STATUS_FAILURE;
	}

	/* flush processor cache */
	NdisAdjustMdlLength(b, len);
	NdisFlushBuffer(b, writetodevice);

	/* free the temp MDL */
	NdisFreeMdl(b);
#endif /* NDIS60 */
	return NDIS_STATUS_SUCCESS;
}