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This macro returns the protocol identifier associated with a given packet descriptor.
UINT NDIS_GET_PACKET_PROTOCOL_TYPE(PNDIS_PACKET_Packet_,);
Parameters
- _Packet_
Points to a packet descriptor.
Return Values
The return value is the protocol type associated with _Packet_. The following table shows the protocol types supported by NDIS.
| Protocol type | Description |
|---|---|
| NDIS_PROTOCOL_ID_DEFAULT | Unspecified |
| NDIS_PROTOCOL_ID_TCP_IP | TCP/IP |
| NDIS_PROTOCOL_ID_IPX | Internetwork packet exchange (IPX) |
| NDIS_PROTOCOL_ID_NBF | NetBEUI |
Remarks
Drivers can test the protocol identifier associated with a packet descriptor to determine whether to perform an operation on a packet. For example, before passing a TCP/IP checksum operation to its NIC, a miniport could test the protocol identifier associated with a packet descriptor. If the protocol identifier is not NDIS_PROTOCOL_ID_TCP_IP, the miniport NIC should not perform checksum operations on the associated packet.
The NDIS_GET_PACKET_PROTOCOL_TYPE macro is defined as follows.
#define NDIS_GET_PACKET_PROTOCOL_TYPE(_Packet_) ((_Packet_)->Private.Flags & NDIS_PROTOCOL_ID_MASK)
Requirements
OS Versions: Windows CE .NET 4.0 and later.
Header: Ndis.h.
See Also
NDIS_PACKET | Protocol Drivers
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