Intel Extensible Firmware Interface - Manual (Page 916)

Extensible Firmware Interface Specification
E-50 12/01/02 Version 1.10
StatFlags
To determine if cable detection is supported by this UNDI/NIC, use these macros with the value
returned in the CDB.StatFlags field:
PXE_STATFLAGS_CABLE_DETECT_MASK
PXE_STATFLAGS_CABLE_DETECT_NOT_SUPPORTED
PXE_STATFLAGS_CABLE_DETECT_SUPPORTED
DB
#pragma pack(1)
typedef struct s_pxe_db_get_init_info {
// Minimum length of locked memory buffer that must be given to
// the Initialize command. Giving UNDI more memory will
// generally give better performance.
// If MemoryRequired is zero, the UNDI does not need and will
// not use system memory to receive and transmit packets.
PXE_UINT32 MemoryRequired;
// Maximum frame data length for Tx/Rx excluding the media
// header.
//
PXE_UINT32 FrameDataLen;
// Supported link speeds are in units of mega bits. Common
// ethernet values are 10, 100 and 1000. Unused LinkSpeeds[]
// entries are zero filled.
PXE_UINT32 LinkSpeeds[4];
// Number of nonvolatile storage items.
PXE_UINT32 NvCount;
// Width of nonvolatile storage item in bytes. 0, 1, 2 or 4
PXE_UINT16 NvWidth;