NDIS_GET_PACKET_PROTOCOL_TYPE (Windows Embedded CE 6.0)
1/6/2010
This macro returns the protocol identifier associated with a given packet descriptor.
Syntax
UINT NDIS_GET_PACKET_PROTOCOL_TYPE(
PNDIS_PACKET _Packet_,
);
Parameters
- _Packet_
Points to a packet descriptor.
Return Value
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
| Header | ndis.h |
| Windows Embedded CE | Windows CE .NET 4.0 and later |
See Also
Reference
Network Driver Macros
NDIS_PACKET