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MiniportResetEx routine

NDIS calls an NDIS miniport driver's MiniportResetEx function to initiate a reset of a network interface card (NIC). For more information, see Miniport Adapter Check-for-Hang and Reset Operations and Miniport Driver Hardware Reset.

Note  An NDIS miniport driver may declare this function by using the MINIPORT_RESET type.

Syntax


MINIPORT_RESET MiniportResetEx;

NDIS_STATUS MiniportResetEx(
  _In_   NDIS_HANDLE MiniportAdapterContext,
  _Out_  PBOOLEAN AddressingReset
)
{ ... }

Parameters

MiniportAdapterContext [in]

A handle to a context area that the miniport driver allocated in its MiniportInitializeEx function. The miniport driver uses this context area to maintain state information for a miniport adapter.

AddressingReset [out]

A pointer to a Boolean variable. The miniport driver sets this variable to TRUE if NDIS should call the MiniportOidRequest function to restore addressing and other configuration settings to the current values. For more information, see Hardware Reset.

Return value

MiniportResetEx can return one of the following status values:

Return codeDescription
NDIS_STATUS_SUCCESS

MiniportResetEx successfully reset the miniport adapter to an operational state.

NDIS_STATUS_PENDING

The driver will complete the reset operation asynchronously by calling the NdisMResetComplete function when the operation is done.

NDIS_STATUS_RESET_IN_PROGRESS

MiniportResetEx determined that the miniport adapter was currently being reset, so this call is superfluous.

NDIS_STATUS_SOFT_ERRORS

MiniportResetEx successfully reset the miniport adapter but a recoverable error occurred during the operation. MiniportResetEx should have called the NdisWriteErrorLogEntry function with more information about the error.

NDIS_STATUS_HARD_ERRORS

MiniportResetEx tried to reset the miniport adapter but an unrecoverable error occurred during the operation. MiniportResetEx should have called NdisWriteErrorLogEntry with more information about the error.

 

Remarks

A driver specifies the MiniportResetEx entry point when it calls the NdisMRegisterMiniportDriver function.

MiniportResetEx is not required for intermediate drivers.

MiniportResetEx can reset the parameters of the miniport adapter. If a reset causes a change in the miniport adapter's station address, the miniport driver automatically restores the prior value of the station address after the reset is complete. Any multicast or functional addressing masks, reset by the hardware, do not have to be reset in this function.

If a reset operation changes other information, such as multicast or functional addressing information, MiniportResetEx must set the variable at AddressingReset to TRUE before it returns. This causes NDIS to call the MiniportOidRequest function to restore the information. NDIS also restores the Wake on the LAN (WoL) pattern list by calling OID_PNP_ADD_WAKE_UP_PATTERN. The driver should free the WoL pattern list from its adapter context because the hardware list is already reset.

NDIS will not abort any pending OID requests or send requests. If the driver can safely complete pending OID or send requests after a reset, the driver can hold pending OID or send requests until after the reset operation is complete. Otherwise, the driver should complete the pending OID or send requests by calling the NdisMOidRequestComplete or NdisMSendNetBufferListsComplete functions respectively before MiniportResetEx returns.

Note  Starting with NDIS 6.30, the miniport driver must not hold pending OID or send requests until after the reset operation is complete. Instead, the driver must complete these pending requests by calling the NdisMOidRequestComplete or NdisMSendNetBufferListsComplete functions respectively before the reset operation is complete. If the driver completes the reset operation asynchronously, it must complete pending OID and send requests before the driver calls NdisMResetComplete.

A miniport driver should not call the NdisMIndicateStatusEx function to signal the start and finish of each reset operation. NDIS notifies bound protocol drivers when a reset begins and ends.

If MiniportResetEx must wait for state changes in the miniport adapter during reset operations, it can call the NdisStallExecution function. However, a MiniportResetEx function must not call NdisStallExecution with a time interval larger than 50 microseconds. If the driver must wait longer than 50 microseconds (or if would poll), it should set a timer instead and return NDIS_STATUS_PENDING.

If MiniportResetEx returns NDIS_STATUS_PENDING, the driver must complete the reset by calling the NdisMResetComplete function.

If a miniport adapter is in the MediaConnectStateConnected state and its state changes because of a reset, including a change to the MediaConnectStateUnknown state, the miniport driver must report the state change with an NDIS_STATUS_LINK_STATE status indication. The miniport driver must also indicate a MediaConnectStateConnected status indication when the link is reestablished after the reset.

MiniportResetEx can be preempted by an interrupt.

NDIS calls the MiniportCheckForHangEx function periodically to determine whether it should call MiniportResetEx. The default time-out for calling MiniportCheckForHangEx is 2 seconds. If this default is too short, a miniport driver can set a larger CheckForHangTimeInSeconds value when calling the NdisMSetMiniportAttributes function during initialization. For more information, see Miniport Adapter Check-for-Hang and Reset Operations.

NDIS cannot determine whether a NIC has stopped responding for receive operations. To handle this kind of failure, the MiniportCheckForHangEx function can monitor receive operations and, if necessary, return TRUE to force a reset. A miniport can also request a reset by calling NdisMResetMiniport.

NDIS calls MiniportResetEx at IRQL <= DISPATCH_LEVEL.

Examples

To define a MiniportResetEx function, you must first provide a function declaration that identifies the type of function you're defining. Windows provides a set of function types for drivers. Declaring a function using the function types helps Code Analysis for Drivers, Static Driver Verifier (SDV), and other verification tools find errors, and it's a requirement for writing drivers for the Windows operating system.

For example, to define a MiniportResetEx function that is named "MyResetEx", use the MINIPORT_RESET type as shown in this code example:


MINIPORT_RESET MyResetEx;

Then, implement your function as follows:


_Use_decl_annotations_
NDIS_STATUS
 MyResetEx(
    NDIS_HANDLE  MiniportAdapterContext,
    PBOOLEAN  AddressingReset
    )
  {...}

The MINIPORT_RESET function type is defined in the Ndis.h header file. To more accurately identify errors when you run the code analysis tools, be sure to add the _Use_decl_annotations_ annotation to your function definition. The _Use_decl_annotations_ annotation ensures that the annotations that are applied to the MINIPORT_RESET function type in the header file are used. For more information about the requirements for function declarations, see Declaring Functions by Using Function Role Types for NDIS Drivers. For information about _Use_decl_annotations_, see Annotating Function Behavior.

Requirements

Version

Supported in NDIS 6.0 and later.

Header

Ndis.h (include Ndis.h)

IRQL

<= DISPATCH_LEVEL

See also

MiniportCheckForHangEx
MiniportInitializeEx
MiniportOidRequest
NDIS_STATUS_LINK_STATE
NdisMIndicateStatusEx
NdisMRegisterMiniportDriver
NdisMOidRequestComplete
NdisMResetComplete
NdisMResetMiniport
NdisMSendNetBufferListsComplete
NdisMSetMiniportAttributes
NdisStallExecution
NdisWriteErrorLogEntry
Miniport Adapter Check-for-Hang and Reset Operations
Miniport Driver Hardware Reset

 

 

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