Send flag functions provided by the NDIS interface library allow a transport driver to set send packet header flags that a NIC driver can query. Table A.2.13 defines these functions.
Table A.2.13 Send Flag Functions
| Function | Definition |
| NdisQuerySendFlags | Reads the Flags field of a packet header structure for send information not included in the packet data. The NIC driver can optionally call this function after a MacSend operation has begun. |
| NdisSetSendFlags | Sets the Flags field of a packet header structure with send information not included in the packet data. A transport driver can optionally call this function before calling NdisSend. |