LLC_CONTIGUOUS_BUFFER

The LLC_CONTIGUOUS_BUFFER structure represents a buffer for received data. Specify this structure in the LLC_BUFFER structure.

typedef struct {
  PLLC_BUFFER pNextBuffer; 
  USHORT cbFrame; 
  USHORT cbBuffer; 
  USHORT offUserData; 
  USHORT cbUserData; 
  USHORT usStationId; 
  UCHAR uchOptions; 
  UCHAR uchMsgType; 
  USHORT cBuffersLeft; 
  UCHAR uchRcvFS; 
  UCHAR uchAdapterNumber; 
  PLLC_BUFFER pNextFrame; 
} LLC_CONTIGUOUS_BUFFER;

Members

pNextBuffer

Specifies the address of an LLC_BUFFER structure representing the next buffer in the frame.

cbFrame

Length of the entire frame.

cbBuffer

Length of this buffer.

offUserData

User data in this structure.

cbUserData

Length of user data.

usStationId

Station identifier.

uchOptions

Defines how the frame is received. Specify one of the following values.

Option	Description
LLC_CONTIGUOUS_MAC	The received data includes a LAN header.
LLC_CONTIGUOUS_DATA	The received data includes a LAN header and a DLC header.
LLC_NOT_CONTIGUOUS_DATA	The received data does not include the DLC header, but begins with the portion of the LAN frame that follows the DLC header.

uchMsgType

Specifies an LLC_FRAME_TYPES value representing the message type. LLC_FRAME_TYPES is an enumerated type. The following values are defined.

Value	Meaning
LLC_DIRECT_MAC	MAC frame (direct station on IBM Token-Ring network only).
LLC_I_FRAME	Information frame (link stations only).
LLC_UI_FRAME	UI frame.
LLC_XID_COMMAND_POLL	XID command (poll bit).
LLC_XID_COMMAND_NOT_POLL	XID command (not poll bit).
LLC_XID_RESPONSE_FINAL	XID response (final bit).
LLC_XID_RESPONSE_NO_FINAL	XID response (not final bit).
LLC_TEST_RESPONSE_FINAL	TEST response (final bit).
LLC_TEST_RESPONSE_NOT_FINAL	TEST response (not final bit).
LLC_DIRECT_8022	802.2 frame (direct station only).
LLC_DIRECT_ETHERNET_TYPE	Ethernet frame (direct station only).

cBuffersLeft

The number of basic buffer units left.

uchRcvFS

The received frame status.

uchAdapterNumber

Adapter number.

pNextFrame

Specifies the address of an LLC_BUFFER structure representing the next frame.

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Windows 95/98: Requires Windows 95 or later.
  Header: Declared in Dlcapi.h.

See Also

The DLC Interface Overview, DLC Structures, AcsLan, LLC_BUFFER