pRxNetDescriptor CParaNdisRX::CreateRxDescriptorOnInit()
{
//For RX packets we allocate following pages
// 1 page for virtio header and indirect buffers array
// X pages needed to fit maximal length buffer of data
// The assumption is virtio header and indirect buffers array fit 1 page
ULONG ulNumPages = m_Context->MaxPacketSize.nMaxDataSizeHwRx / PAGE_SIZE + 2;
pRxNetDescriptor p = (pRxNetDescriptor)ParaNdis_AllocateMemory(m_Context, sizeof(*p));
if (p == NULL) return NULL;
NdisZeroMemory(p, sizeof(*p));
p->BufferSGArray = (struct VirtIOBufferDescriptor *)
ParaNdis_AllocateMemory(m_Context, sizeof(*p->BufferSGArray) * ulNumPages);
if (p->BufferSGArray == NULL) goto error_exit;
p->PhysicalPages = (tCompletePhysicalAddress *)
ParaNdis_AllocateMemory(m_Context, sizeof(*p->PhysicalPages) * ulNumPages);
if (p->PhysicalPages == NULL) goto error_exit;
for (p->PagesAllocated = 0; p->PagesAllocated < ulNumPages; p->PagesAllocated++)
{
p->PhysicalPages[p->PagesAllocated].size = PAGE_SIZE;
if (!InitialAllocatePhysicalMemory(&p->PhysicalPages[p->PagesAllocated]))
goto error_exit;
p->BufferSGArray[p->PagesAllocated].physAddr = p->PhysicalPages[p->PagesAllocated].Physical;
p->BufferSGArray[p->PagesAllocated].length = PAGE_SIZE;
}
//First page is for virtio header, size needs to be adjusted correspondingly
p->BufferSGArray[0].length = m_Context->nVirtioHeaderSize;
//Pre-cache indirect area addresses
p->IndirectArea.Physical.QuadPart = p->PhysicalPages[0].Physical.QuadPart + m_Context->nVirtioHeaderSize;
p->IndirectArea.Virtual = RtlOffsetToPointer(p->PhysicalPages[0].Virtual, m_Context->nVirtioHeaderSize);
p->IndirectArea.size = PAGE_SIZE - m_Context->nVirtioHeaderSize;
if (!ParaNdis_BindRxBufferToPacket(m_Context, p))
goto error_exit;
return p;
error_exit:
ParaNdis_FreeRxBufferDescriptor(m_Context, p);
return NULL;
}
/**********************************************************
NDIS5.X handler of power management
***********************************************************/
NDIS_STATUS ParaNdis_OnSetPower(PARANDIS_ADAPTER *pContext, tOidDesc *pOid)
{
NDIS_STATUS status;
NDIS_DEVICE_POWER_STATE newState;
DEBUG_ENTRY(0);
status = ParaNdis_OidSetCopy(pOid, &newState, sizeof(newState));
if (status == NDIS_STATUS_SUCCESS)
{
tPowerWorkItem *pwi = ParaNdis_AllocateMemory(pContext, sizeof(tPowerWorkItem));
status = NDIS_STATUS_FAILURE;
if (pwi)
{
pwi->pContext = pContext;
pwi->state = newState;
NdisInitializeWorkItem(&pwi->wi, OnSetPowerWorkItem, pwi);
if (NdisScheduleWorkItem(&pwi->wi) == NDIS_STATUS_SUCCESS)
{
status = NDIS_STATUS_PENDING;
}
else
NdisFreeMemory(pwi, 0, 0);
}
}
return status;
}
/*************************************************************
Required NDIS procedure
Called when some procedure (like OID handler) returns PENDING and
does not complete or when CheckForHang return TRUE
*************************************************************/
static NDIS_STATUS ParaNdis5_Reset(
OUT PBOOLEAN AddressingReset,
IN NDIS_HANDLE MiniportAdapterContext)
{
NDIS_STATUS status;
tGeneralWorkItem *pwi;
PARANDIS_ADAPTER *pContext = (PARANDIS_ADAPTER *)MiniportAdapterContext;
DEBUG_ENTRY(0);
ParaNdis_DebugHistory(pContext, hopSysReset, NULL, 1, 0, 0);
status = NDIS_STATUS_FAILURE;
pwi = ParaNdis_AllocateMemory(pContext, sizeof(tGeneralWorkItem));
if (pwi)
{
pwi->pContext = pContext;
NdisInitializeWorkItem(&pwi->wi, OnResetWorkItem, pwi);
if (NdisScheduleWorkItem(&pwi->wi) == NDIS_STATUS_SUCCESS)
{
status = NDIS_STATUS_PENDING;
}
else
{
NdisFreeMemory(pwi, 0, 0);
}
}
if (status != NDIS_STATUS_PENDING)
{
ParaNdis_DebugHistory(pContext, hopSysReset, NULL, 0, status, 0);
}
return status;
}
/**********************************************************
Required NDIS handler for RESET operation
Never happens under normal condition, only if
OID or other call returns PENDING and not completed or if
ParaNdis6_CheckForHang returns true
***********************************************************/
static NDIS_STATUS ParaNdis6_Reset(
NDIS_HANDLE miniportAdapterContext,
PBOOLEAN pAddressingReset)
{
NDIS_STATUS status = NDIS_STATUS_FAILURE;
PARANDIS_ADAPTER *pContext = (PARANDIS_ADAPTER *)miniportAdapterContext;
NDIS_HANDLE hwo;
tGeneralWorkItem *pwi;
DEBUG_ENTRY(0);
*pAddressingReset = TRUE;
ParaNdis_DebugHistory(pContext, hopSysReset, NULL, 1, 0, 0);
hwo = NdisAllocateIoWorkItem(pContext->MiniportHandle);
pwi = ParaNdis_AllocateMemory(pContext, sizeof(tGeneralWorkItem));
if (pwi && hwo)
{
pwi->pContext = pContext;
pwi->WorkItem = hwo;
NdisQueueIoWorkItem(hwo, OnResetWorkItem, pwi);
status = NDIS_STATUS_PENDING;
}
else
{
if (pwi) NdisFreeMemory(pwi, 0, 0);
if (hwo) NdisFreeIoWorkItem(hwo);
ParaNdis_DebugHistory(pContext, hopSysReset, NULL, 0, status, 0);
}
DEBUG_EXIT_STATUS(0, status);
return status;
}
/********************************************************
Allocate and fill our capabilities, dependent on registry setting
Note than NDIS test of WLK1.2 and 1.3 fail (offloadmisc)
if CS capability indicated and passes if only LSO indicated
********************************************************/
NDIS_STATUS CreateOffloadInfo5Internal(
PARANDIS_ADAPTER *pContext,
PVOID *ppInfo,
PULONG pulSize,
PCCHAR reason,
NDIS_TASK_OFFLOAD_HEADER *pHeader)
{
NDIS_STATUS status = NDIS_STATUS_RESOURCES;
ULONG size =
sizeof(NDIS_TASK_OFFLOAD_HEADER) +
sizeof(NDIS_TASK_OFFLOAD) + sizeof(NDIS_TASK_TCP_IP_CHECKSUM) +
sizeof(NDIS_TASK_OFFLOAD) + sizeof(NDIS_TASK_TCP_LARGE_SEND);
*ppInfo = ParaNdis_AllocateMemory(pContext, size);
if (*ppInfo)
{
ULONG flags = 0;
NDIS_TASK_TCP_IP_CHECKSUM cs;
NDIS_TASK_TCP_LARGE_SEND lso;
flags |= GetTcpIpCheckSumCapabilities(pContext, &cs) ? 2 : 0;
flags |= GetLargeSendCapabilities(pContext, &lso) ? 1 : 0;
if (flags)
{
NDIS_TASK_OFFLOAD_HEADER *ph;
NDIS_TASK_OFFLOAD *pto;
UINT i = 0;
ULONG *pOffset;
PVOID base;
*pulSize = size;
NdisZeroMemory(*ppInfo, size);
ph = (NDIS_TASK_OFFLOAD_HEADER *)*ppInfo;
*ph = *pHeader;
pto = (NDIS_TASK_OFFLOAD *)(ph + 1);
base = ph;
pOffset = &ph->OffsetFirstTask;
ph->OffsetFirstTask = 0;
do
{
if (flags & (1 << i))
{
flags &= ~(1 << i);
pto->Version = NDIS_TASK_OFFLOAD_VERSION;
pto->Size = sizeof(*pto);
*pOffset = RtlPointerToOffset(base, pto);
base = pto;
pOffset = &pto->OffsetNextTask;
switch(i)
{
case 1:
{
NDIS_TASK_TCP_IP_CHECKSUM *pcs = (NDIS_TASK_TCP_IP_CHECKSUM *)pto->TaskBuffer;
pto->Task = TcpIpChecksumNdisTask;
pto->TaskBufferLength = sizeof(*pcs);
NdisMoveMemory(pcs, &cs, sizeof(cs));
pto = (NDIS_TASK_OFFLOAD *)(pcs + 1);
break;
}
case 0:
{
NDIS_TASK_TCP_LARGE_SEND *pls = (NDIS_TASK_TCP_LARGE_SEND *)pto->TaskBuffer;
pto->Task = TcpLargeSendNdisTask;
pto->TaskBufferLength = sizeof(*pls);
NdisMoveMemory(pls, &lso, sizeof(lso));
pto = (NDIS_TASK_OFFLOAD *)(pls + 1);
break;
}
default:
break;
}
}
++i;
} while (flags);
status = ParseOffload(pContext, ph, size, FALSE, reason, FALSE);
}
else
{
NdisFreeMemory(*ppInfo, 0, 0);
*ppInfo = NULL;
status = NDIS_STATUS_NOT_SUPPORTED;
}
}
return status;
}
/******************************************************
Required NDIS procedure
Allocates and initializes adapter context
Finally sets send and receive to Enabled state and reports connect
Returns:
NDIS_STATUS SUCCESS or some error code
*******************************************************/
static NDIS_STATUS ParaNdis5_Initialize(OUT PNDIS_STATUS OpenErrorStatus,
OUT PUINT SelectedMediumIndex,
IN PNDIS_MEDIUM MediumArray,
IN UINT MediumArraySize,
IN NDIS_HANDLE MiniportAdapterHandle,
IN NDIS_HANDLE WrapperConfigurationContext)
{
NDIS_STATUS status = NDIS_STATUS_UNSUPPORTED_MEDIA;
PARANDIS_ADAPTER *pContext = NULL;
UINT i;
for(i = 0; i < MediumArraySize; ++i)
{
if(MediumArray[i] == NdisMedium802_3)
{
*SelectedMediumIndex = i;
status = NDIS_STATUS_SUCCESS;
break;
}
}
if (status == NDIS_STATUS_SUCCESS)
{
pContext =
(PARANDIS_ADAPTER *)ParaNdis_AllocateMemory(NULL, sizeof(PARANDIS_ADAPTER));
if (!pContext)
{
status = NDIS_STATUS_RESOURCES;
}
}
if (status == NDIS_STATUS_SUCCESS)
{
PVOID pResourceList = &status;
UINT uSize = 0;
NdisZeroMemory(pContext, sizeof(PARANDIS_ADAPTER));
pContext->ulUniqueID = InterlockedIncrement(&gID);
pContext->DriverHandle = DriverHandle;
pContext->MiniportHandle = MiniportAdapterHandle;
pContext->WrapperConfigurationHandle = WrapperConfigurationContext;
NdisMQueryAdapterResources(&status, WrapperConfigurationContext, pResourceList, &uSize);
if (uSize > 0)
pResourceList = ParaNdis_AllocateMemory(MiniportAdapterHandle, uSize);
else
pResourceList = NULL;
if (!pResourceList)
status = uSize > 0 ? NDIS_STATUS_RESOURCES : NDIS_STATUS_FAILURE;
else
{
ULONG attributes;
attributes = NDIS_ATTRIBUTE_DESERIALIZE | NDIS_ATTRIBUTE_BUS_MASTER;
// in XP SP2, if this flag is NOT set, the NDIS halts miniport
// upon transition to S1..S4.
// it seems that XP SP3 ignores it and always sends SET_POWER to D3
#ifndef NO_XP_POWER_MANAGEMENT
attributes |= NDIS_ATTRIBUTE_NO_HALT_ON_SUSPEND;
#endif
#ifdef NDIS50_MINIPORT
//TODO: this is wrong, I think
// this API is for XP and
// it should be used only if you never need virtual addresses of sent buffers
// so I comment it out
//attributes |= NDIS_ATTRIBUTE_USES_SAFE_BUFFER_APIS;
#endif
NdisMSetAttributesEx(
MiniportAdapterHandle,
pContext,
0,
attributes,
NdisInterfacePci);
NdisMQueryAdapterResources(&status, WrapperConfigurationContext, pResourceList, &uSize);
status = ParaNdis_InitializeContext(pContext, (PNDIS_RESOURCE_LIST)pResourceList);
NdisFreeMemory(pResourceList, 0, 0);
}
}
if (status == NDIS_STATUS_SUCCESS)
{
status = ParaNdis_FinishInitialization(pContext);
if (status == NDIS_STATUS_SUCCESS)
{
#ifdef NDIS50_MINIPORT
NdisMRegisterAdapterShutdownHandler(
MiniportAdapterHandle,
pContext,
(ADAPTER_SHUTDOWN_HANDLER)ParaNdis5_Shutdown);
#endif //NDIS50_MINIPORT
ParaNdis_DebugRegisterMiniport(pContext, TRUE);
ParaNdis_IndicateConnect(pContext, FALSE, TRUE);
ParaNdis5_StopSend(pContext, FALSE, NULL);
ParaNdis5_StopReceive(pContext, FALSE, NULL);
if (!pContext->ulMilliesToConnect)
{
ParaNdis_ReportLinkStatus(pContext, FALSE);
}
else
{
NdisSetTimer(&pContext->ConnectTimer, pContext->ulMilliesToConnect);
}
}
else
{
ParaNdis_CleanupContext(pContext);
}
}
if (status != NDIS_STATUS_SUCCESS && pContext)
{
NdisFreeMemory(pContext, 0, 0);
}
DEBUG_EXIT_STATUS(0, status);
return status;
}
/**********************************************************
Required NDIS handler
Initialize adapter context, prepare it for operation,
set in PAUSED STATE
Return value:
SUCCESS or kind of error
***********************************************************/
static NDIS_STATUS ParaNdis6_Initialize(
NDIS_HANDLE miniportAdapterHandle,
NDIS_HANDLE miniportDriverContext,
PNDIS_MINIPORT_INIT_PARAMETERS miniportInitParameters)
{
NDIS_MINIPORT_ADAPTER_ATTRIBUTES miniportAttributes;
NDIS_STATUS status = NDIS_STATUS_SUCCESS;
BOOLEAN bNoPauseOnSuspend = FALSE;
PARANDIS_ADAPTER *pContext;
UNREFERENCED_PARAMETER(miniportDriverContext);
DEBUG_ENTRY(0);
#pragma warning( suppress: 28197)
/* allocate context structure */
pContext = (PARANDIS_ADAPTER *)
NdisAllocateMemoryWithTagPriority(
miniportAdapterHandle,
sizeof(PARANDIS_ADAPTER),
PARANDIS_MEMORY_TAG,
NormalPoolPriority);
/* This call is for Static Driver Verifier only - has no real functionality*/
__sdv_save_adapter_context(pContext);
if (!pContext)
{
DPrintf(0, ("[%s] ERROR: Memory allocation failed!\n", __FUNCTION__));
status = NDIS_STATUS_RESOURCES;
}
if (status == NDIS_STATUS_SUCCESS)
{
/* set mandatory fields which Common use */
NdisZeroMemory(pContext, sizeof(PARANDIS_ADAPTER));
pContext->ulUniqueID = NdisInterlockedIncrement(&gID);
pContext->DriverHandle = DriverHandle;
pContext->MiniportHandle = miniportAdapterHandle;
}
if (status == NDIS_STATUS_SUCCESS)
{
NdisZeroMemory(&miniportAttributes, sizeof(miniportAttributes));
miniportAttributes.RegistrationAttributes.Header.Type = NDIS_OBJECT_TYPE_MINIPORT_ADAPTER_REGISTRATION_ATTRIBUTES;
miniportAttributes.RegistrationAttributes.Header.Revision = NDIS_MINIPORT_ADAPTER_REGISTRATION_ATTRIBUTES_REVISION_1;
miniportAttributes.RegistrationAttributes.Header.Size = NDIS_SIZEOF_MINIPORT_ADAPTER_REGISTRATION_ATTRIBUTES_REVISION_1;
miniportAttributes.RegistrationAttributes.MiniportAdapterContext = pContext;
miniportAttributes.RegistrationAttributes.AttributeFlags =
// actual for USB
// NDIS_MINIPORT_ATTRIBUTES_SURPRISE_REMOVE_OK
NDIS_MINIPORT_ATTRIBUTES_HARDWARE_DEVICE |
NDIS_MINIPORT_ATTRIBUTES_BUS_MASTER;
#ifndef NO_VISTA_POWER_MANAGEMENT
miniportAttributes.RegistrationAttributes.AttributeFlags |= NDIS_MINIPORT_ATTRIBUTES_NO_HALT_ON_SUSPEND;
#endif
#if NDIS_SUPPORT_NDIS630
miniportAttributes.RegistrationAttributes.AttributeFlags |= NDIS_MINIPORT_ATTRIBUTES_NO_PAUSE_ON_SUSPEND;
bNoPauseOnSuspend = TRUE;
#endif
miniportAttributes.RegistrationAttributes.CheckForHangTimeInSeconds = 4;
miniportAttributes.RegistrationAttributes.InterfaceType = NdisInterfacePci;
status = NdisMSetMiniportAttributes(miniportAdapterHandle, &miniportAttributes);
if (status != NDIS_STATUS_SUCCESS)
{
DPrintf(0, ("[%s] ERROR: NdisMSetMiniportAttributes 1 failed (%X)!\n", __FUNCTION__, status));
}
}
if (status == NDIS_STATUS_SUCCESS)
{
/* prepare statistics struct for further reports */
pContext->Statistics.Header.Type = NDIS_OBJECT_TYPE_DEFAULT;
pContext->Statistics.Header.Revision = NDIS_STATISTICS_INFO_REVISION_1;
pContext->Statistics.Header.Size = NDIS_SIZEOF_STATISTICS_INFO_REVISION_1;
/* let Common do all the rest */
status = ParaNdis_InitializeContext(pContext, miniportInitParameters->AllocatedResources);
if (status != NDIS_STATUS_SUCCESS)
{
DPrintf(0, ("[%s] ERROR: ParaNdis6_InitializeContext failed (%X)!\n", __FUNCTION__, status));
}
pContext->bNoPauseOnSuspend = bNoPauseOnSuspend;
}
if (status == NDIS_STATUS_SUCCESS)
{
ULONG i;
NDIS_PNP_CAPABILITIES power60Caps;
#if NDIS_SUPPORT_NDIS620
NDIS_PM_CAPABILITIES power620Caps;
#endif
#ifdef NO_VISTA_POWER_MANAGEMENT
pPowerCaps = NULL;
#endif
ParaNdis_FillPowerCapabilities(&power60Caps);
NdisZeroMemory(&miniportAttributes, sizeof(miniportAttributes));
miniportAttributes.GeneralAttributes.Header.Type = NDIS_OBJECT_TYPE_MINIPORT_ADAPTER_GENERAL_ATTRIBUTES;
miniportAttributes.GeneralAttributes.Header.Revision = NDIS_MINIPORT_ADAPTER_GENERAL_ATTRIBUTES_REVISION_1;
miniportAttributes.GeneralAttributes.Header.Size = NDIS_SIZEOF_MINIPORT_ADAPTER_GENERAL_ATTRIBUTES_REVISION_1;
#if NDIS_SUPPORT_NDIS620
miniportAttributes.GeneralAttributes.Header.Revision = NDIS_MINIPORT_ADAPTER_GENERAL_ATTRIBUTES_REVISION_2;
miniportAttributes.GeneralAttributes.Header.Size = NDIS_SIZEOF_MINIPORT_ADAPTER_GENERAL_ATTRIBUTES_REVISION_2;
miniportAttributes.GeneralAttributes.PowerManagementCapabilitiesEx = &power620Caps;
ParaNdis6_Fill620PowerCapabilities(&power620Caps);
#else
miniportAttributes.GeneralAttributes.PowerManagementCapabilities = &power60Caps;
#endif
miniportAttributes.GeneralAttributes.MediaType = NdisMedium802_3;
miniportAttributes.GeneralAttributes.PhysicalMediumType = NdisPhysicalMedium802_3;
miniportAttributes.GeneralAttributes.MtuSize = pContext->MaxPacketSize.nMaxDataSize;
miniportAttributes.GeneralAttributes.LookaheadSize = pContext->MaxPacketSize.nMaxFullSizeOS;
miniportAttributes.GeneralAttributes.MaxXmitLinkSpeed =
miniportAttributes.GeneralAttributes.MaxRcvLinkSpeed = PARANDIS_FORMAL_LINK_SPEED;
miniportAttributes.GeneralAttributes.MediaConnectState =
pContext->bConnected ? MediaConnectStateConnected : MediaConnectStateDisconnected;
miniportAttributes.GeneralAttributes.XmitLinkSpeed =
miniportAttributes.GeneralAttributes.RcvLinkSpeed = pContext->bConnected ?
PARANDIS_FORMAL_LINK_SPEED : NDIS_LINK_SPEED_UNKNOWN;
miniportAttributes.GeneralAttributes.MediaDuplexState = MediaDuplexStateFull;
miniportAttributes.GeneralAttributes.MacOptions =
NDIS_MAC_OPTION_COPY_LOOKAHEAD_DATA | /* NIC has no internal loopback support */
NDIS_MAC_OPTION_TRANSFERS_NOT_PEND | /* Must be set since using NdisMIndicateReceivePacket */
NDIS_MAC_OPTION_NO_LOOPBACK; /* NIC has no internal loopback support */
if (IsPrioritySupported(pContext))
miniportAttributes.GeneralAttributes.MacOptions |= NDIS_MAC_OPTION_8021P_PRIORITY;
if (IsVlanSupported(pContext))
miniportAttributes.GeneralAttributes.MacOptions |= NDIS_MAC_OPTION_8021Q_VLAN;
miniportAttributes.GeneralAttributes.SupportedPacketFilters = PARANDIS_PACKET_FILTERS;
miniportAttributes.GeneralAttributes.MaxMulticastListSize = PARANDIS_MULTICAST_LIST_SIZE;
miniportAttributes.GeneralAttributes.MacAddressLength = ETH_LENGTH_OF_ADDRESS;
#if PARANDIS_SUPPORT_RSS
if(pContext->bRSSOffloadSupported)
{
miniportAttributes.GeneralAttributes.RecvScaleCapabilities =
ParaNdis6_RSSCreateConfiguration(
&pContext->RSSParameters,
&pContext->RSSCapabilities,
pContext->RSSMaxQueuesNumber);
pContext->bRSSInitialized = TRUE;
}
#endif
for(i = 0; i < ARRAYSIZE(pContext->ReceiveQueues); i++)
{
NdisAllocateSpinLock(&pContext->ReceiveQueues[i].Lock);
InitializeListHead(&pContext->ReceiveQueues[i].BuffersList);
pContext->ReceiveQueues[i].BatchReceiveArray =
ParaNdis_AllocateMemory(pContext, sizeof(*pContext->ReceiveQueues[i].BatchReceiveArray)*pContext->NetMaxReceiveBuffers);
if(!pContext->ReceiveQueues[i].BatchReceiveArray)
{
pContext->ReceiveQueues[i].BatchReceiveArray = &pContext->ReceiveQueues[i].BatchReceiveEmergencyItem;
pContext->ReceiveQueues[i].BatchReceiveArraySize = 1;
}
else
{
pContext->ReceiveQueues[i].BatchReceiveArraySize = pContext->NetMaxReceiveBuffers;
}
}
pContext->ReceiveQueuesInitialized = TRUE;
miniportAttributes.GeneralAttributes.AccessType = NET_IF_ACCESS_BROADCAST;
miniportAttributes.GeneralAttributes.DirectionType = NET_IF_DIRECTION_SENDRECEIVE;
miniportAttributes.GeneralAttributes.IfType = IF_TYPE_ETHERNET_CSMACD;
miniportAttributes.GeneralAttributes.IfConnectorPresent = TRUE;
miniportAttributes.GeneralAttributes.ConnectionType = NET_IF_CONNECTION_DEDICATED;
ETH_COPY_NETWORK_ADDRESS(miniportAttributes.GeneralAttributes.PermanentMacAddress, pContext->PermanentMacAddress);
ETH_COPY_NETWORK_ADDRESS(miniportAttributes.GeneralAttributes.CurrentMacAddress, pContext->CurrentMacAddress);
ParaNdis6_GetSupportedOid(&miniportAttributes.GeneralAttributes);
/* update also SupportedStatistics in ready to use statistics block */
pContext->Statistics.SupportedStatistics = ParaNdis6_GetSupportedStatisticsFlags();
status = NdisMSetMiniportAttributes(miniportAdapterHandle, &miniportAttributes);
if (status != NDIS_STATUS_SUCCESS)
{
DPrintf(0, ("[%s] ERROR: NdisMSetMiniportAttributes 2 failed (%X)!\n", __FUNCTION__, status));
}
}
if (pContext && status != NDIS_STATUS_SUCCESS && status != NDIS_STATUS_PENDING)
{
// no need to cleanup
NdisFreeMemory(pContext, 0, 0);
pContext = NULL;
}
if (pContext && status == NDIS_STATUS_SUCCESS)
{
status = ParaNdis_FinishInitialization(pContext);
if (status != NDIS_STATUS_SUCCESS)
{
ParaNdis_CleanupContext(pContext);
NdisFreeMemory(pContext, 0, 0);
pContext = NULL;
}
}
if (pContext && status == NDIS_STATUS_SUCCESS)
{
if (NDIS_STATUS_SUCCESS ==
ParaNdis6_GetRegistrationOffloadInfo(pContext,
&miniportAttributes.OffloadAttributes))
status = NdisMSetMiniportAttributes(miniportAdapterHandle, &miniportAttributes);
if (status != NDIS_STATUS_SUCCESS)
{
DPrintf(0, ("[%s] ERROR: NdisMSetMiniportAttributes 3 failed (%X)!\n", __FUNCTION__, status));
}
}
if (pContext && status == NDIS_STATUS_SUCCESS)
{
ParaNdis_DebugRegisterMiniport(pContext, TRUE);
}
DEBUG_EXIT_STATUS(status ? 0 : 2, status);
return status;
}
pRxNetDescriptor CParaNdisRX::CreateRxDescriptorOnInit()
{
//For RX packets we allocate following pages
// 1 page for virtio header and indirect buffers array
// X pages needed to fit maximal length buffer of data
// The assumption is virtio header and indirect buffers array fit 1 page
ULONG ulNumPages = m_Context->MaxPacketSize.nMaxDataSizeHwRx / PAGE_SIZE + 2;
pRxNetDescriptor p = (pRxNetDescriptor)ParaNdis_AllocateMemory(m_Context, sizeof(*p));
if (p == NULL) return NULL;
NdisZeroMemory(p, sizeof(*p));
p->BufferSGArray = (struct VirtIOBufferDescriptor *)
ParaNdis_AllocateMemory(m_Context, sizeof(*p->BufferSGArray) * ulNumPages);
if (p->BufferSGArray == NULL) goto error_exit;
p->PhysicalPages = (tCompletePhysicalAddress *)
ParaNdis_AllocateMemory(m_Context, sizeof(*p->PhysicalPages) * ulNumPages);
if (p->PhysicalPages == NULL) goto error_exit;
p->BufferSGLength = 0;
while (ulNumPages > 0)
{
// Allocate the first page separately, the rest can be one contiguous block
ULONG ulPagesToAlloc = (p->BufferSGLength == 0 ? 1 : ulNumPages);
while (!ParaNdis_InitialAllocatePhysicalMemory(
m_Context,
PAGE_SIZE * ulPagesToAlloc,
&p->PhysicalPages[p->BufferSGLength]))
{
// Retry with half the pages
if (ulPagesToAlloc == 1)
goto error_exit;
else
ulPagesToAlloc /= 2;
}
p->BufferSGArray[p->BufferSGLength].physAddr = p->PhysicalPages[p->BufferSGLength].Physical;
p->BufferSGArray[p->BufferSGLength].length = p->PhysicalPages[p->BufferSGLength].size;
ulNumPages -= ulPagesToAlloc;
p->BufferSGLength++;
}
//First page is for virtio header, size needs to be adjusted correspondingly
p->BufferSGArray[0].length = m_Context->nVirtioHeaderSize;
ULONG indirectAreaOffset = ALIGN_UP(m_Context->nVirtioHeaderSize, ULONGLONG);
//Pre-cache indirect area addresses
p->IndirectArea.Physical.QuadPart = p->PhysicalPages[0].Physical.QuadPart + indirectAreaOffset;
p->IndirectArea.Virtual = RtlOffsetToPointer(p->PhysicalPages[0].Virtual, indirectAreaOffset);
p->IndirectArea.size = PAGE_SIZE - indirectAreaOffset;
if (!ParaNdis_BindRxBufferToPacket(m_Context, p))
goto error_exit;
return p;
error_exit:
ParaNdis_FreeRxBufferDescriptor(m_Context, p);
return NULL;
}