OID_GEN_TRANSMIT_BLOCK_SIZE

As a query, the OID_GEN_TRANSMIT_BLOCK_SIZE OID specifies the minimum number of bytes that a single net packet occupies in the transmit buffer space of the NIC.

Version Information

Windows Vista and later versions of Windows
Supported.

NDIS 6.0 and later miniport drivers
Mandatory.

NDIS 5.1 miniport drivers
Mandatory.

Windows XP
Supported.

NDIS 5.1 miniport drivers
Mandatory.

Remarks

The OID_GEN_TRANSMIT_BLOCK_SIZE OID specifies the minimum number of bytes that a single net packet occupies in the transmit buffer space of the NIC. For example, a NIC that has a transmit space divided into 256-byte pieces would have a transmit block size of 256 bytes. To calculate the total transmit buffer space on such a NIC, its driver multiplies the number of transmit buffers on the NIC by its transmit block size.

For other NICs, the transmit block size is identical to its maximum packet size.

Requirements