NdisGetNetBufferListProtocolId function (ndis/nblapi.h)

The NdisGetNetBufferListProtocolId function retrieves the protocol identifier from the NetBufferListInfo member of a NET_BUFFER_LIST structure.

Syntax

NDIS_EXPORTED_ROUTINE UCHAR NdisGetNetBufferListProtocolId(
  [in] NET_BUFFER_LIST const *NetBufferList
);

Parameters

[in] NetBufferList

A pointer to a NET_BUFFER_LIST structure.

Return value

NdisGetNetBufferListProtocolId returns a protocol identifier as one of the following values:

Return code	Description
NDIS_PROTOCOL_ID_DEFAULT	A default protocol driver identifier.
NDIS_PROTOCOL_ID_TCP_IP	The TCP/IP protocol identifier.
NDIS_PROTOCOL_ID_IPX	The IPX protocol identifier.
NDIS_PROTOCOL_ID_NBF	The NetBEUI protocol identifier.

Remarks

NDIS drivers can call the NdisGetNetBufferListProtocolId function to determine the type of protocol driver that created a NET_BUFFER_LIST structure. For example, miniport drivers that support TCP chimney offload can verify that a NET_BUFFER_LIST structure comes from a TCP protocol.

Protocol drivers that create NET_BUFFER_LIST structures should set the protocol identifier by calling the NdisSetNetBufferListProtocolId macro or by associating an identifier with a NET_BUFFER_LIST pool.

Requirements

Requirement	Value
Minimum supported client	Supported in NDIS 6.0 and later.
Target Platform	Universal
Header	ndis/nblapi.h (include ndis.h)
Library	Ndis.lib
IRQL	Any level

See also

NET_BUFFER_LIST

NdisSetNetBufferListProtocolId