Intel Extensible Firmware Interface - Manual (Page 957)

32/64-Bit UNDI Specification
Version 1.10 12/01/02 E-91
Using the DB
If multiple frames per command are supported (see !PXE.Implementation flags), multiple
DBs can be packed together.
#pragma pack(1)
typedef struct s_pxe_db_receive {
// Source and destination MAC addresses from media header.
PXE_MAC_ADDR SrcAddr;
PXE_MAC_ADDR DestAddr;
// Length of received frame. May be larger than receive buffer
// size. The receive buffer will not be overwritten. This is
// how to tell if data was lost because the receive buffer was
// too small.
PXE_UINT32 FrameLen;
// Protocol type from media header.
PXE_PROTOCOL Protocol;
// Length of media header in received frame.
PXE_UINT16 MediaHeaderLen;
// Type of receive frame.
PXE_FRAME_TYPE Type;
// Reserved, must be zero.
PXE_UINT8 reserved[7];
} PXE_DB_RECEIVE;
#pragma pack()