OID_GEN_MAXIMUM_LOOKAHEAD

As a query, the OID_GEN_MAXIMUM_LOOKAHEAD OID specifies the maximum number of bytes that the NIC can provide as lookahead data. This specification does not include a header.

Version Information

Windows Vista and later versions of Windows
Supported.

NDIS 6.0 and later miniport drivers
Not requested.

NDIS 5.1 miniport drivers
Mandatory.

Windows XP
Supported.

NDIS 5.1 miniport drivers
Mandatory.

Remarks

NDIS 6.0 and later miniport drivers do not receive this OID request. NDIS handles this OID with a cached value that miniport drivers supply during initialization.

Upper-layer drivers examine lookahead data to determine whether a packet that is associated with the lookahead data is intended for one or more of their clients.

If the underlying driver supports multipacket receive indications, bound protocol drivers are given full net packets on every indication. Consequently, this value is identical to that returned for OID_GEN_RECEIVE_BLOCK_SIZE.

Requirements

See also

OID_GEN_RECEIVE_BLOCK_SIZE