NDIS_WAN_CO_FRAGMENT structure
Note NDIS 5. x has been deprecated and is superseded by NDIS 6. x. For new NDIS driver development, see Network Drivers Starting with Windows Vista. For information about porting NDIS 5. x drivers to NDIS 6. x, see Porting NDIS 5.x Drivers to NDIS 6.0.
The NDIS_WAN_CO_FRAGMENT structure contains information associated with a fragment indication made by a CoNDIS WAN miniport driver.
Syntax
typedef struct _NDIS_WAN_CO_FRAGMENT {
ULONG Errors;
} NDIS_WAN_CO_FRAGMENT, *PNDIS_WAN_CO_FRAGMENT;
Members
Errors
A 32-bit value that specifies a bitmask that is set with one or more of the following system-defined values to indicate why the fragment was received. The miniport driver can set a combination of the following values, using the binary OR operator:WAN_ERROR_CRC
Specifies a CRC error was encountered for a particular VC. CRC errors are caused by the failure of a cyclic redundancy check. A CRC error indicates that one or more bytes in a frame received were found garbled on arrival.WAN_ERROR_FRAMING
Specifies a framing error was encountered for a particular VC. A framing error occurs when an asynchronous byte is received with an invalid start or stop bit.WAN_ERROR_HARDWAREOVERRUN
Specifies a hardware overrun was encountered for a particular VC. Hardware overruns occur when the WAN NIC cannot handle the rate at which data is received.WAN_ERROR_BUFFEROVERRUN
Specifies a buffer overrun was encountered for a particular VC. Buffer overruns occur when the WAN miniport driver cannot handle the rate at which data is received.WAN_ERROR_TIMEOUT
Specifies a time-out error was encountered for a particular VC. Time-out errors occur when an expected byte is not received in time.WAN_ERROR_ALIGNMENT
Specifies an alignment error was encountered for a particular VC. Alignment errors occur when a byte received is different from the byte expected. This typically happens when a byte is lost or when a time-out error occurs.
If no direct mapping from the WAN medium error to one of the preceding error flags exists, choose the most appropriate flag or combination of flags.
Remarks
A CoNDIS WAN miniport driver calls NdisMCoIndicateStatus with this type of indication when it receives a partial packet from an endpoint of a virtual connection on the wide area network.
Requirements
Header |
Ndiswan.h (include Ndiswan.h) |
See also