Intel Extensible Firmware Interface, Спецификация

Страница: 298 / 494

Extensible Firmware Interface Specification
280 12/12/00 Version 1.02
State
Reports the current state of the network interface (see
EFI_SIMPLE_NETWORK_STATE
below). When an
EFI_SIMPLE_NETWORK
driver has initialized a network
interface, it is left in the
EfiSimpleNetworkStopped
state.
HwAddressSize
The size, in bytes, of the network interface’s HW address.
MediaHeaderSize
The size, in bytes, of the network interface’s media header.
MaxPacketSize
The maximum size, in bytes, of the packets supported by the
network interface.
NvRamSize
The size, in bytes, of the NVRAM device attached to the
network interface. If an NVRAM device is not attached to the
network interface, then this field will be zero. This value must
be a multiple of
NvramAccessSize
.
NvRamAccessSize
The size that must be used for all NVRAM accesses. This
means that the start address for NVRAM read and write
operations, and the total length of thoseoperation, must be a
multiple of this value. The legal values for this field are 0, 1, 2,
4, 8. If the value is zero, then no NVRAM devices are attached
to the network interface.
ReceiveFilterMask
The multicast receive filter settings supported by the network
interface.
ReceiveFilterSetting
The current multicast receive filter settings. See “Bit Mask
Values for
ReceiveFilterSetting
” below.
MaxMCastFilterCount
The maximum number of multicast address receive filters
supported by the driver. If this value is zero, then the multicast
address receive filters can not be modified with ReceiveFilters().
This field may be less than
MAX_MCAST_FILTER_CNT
(see
below).
MCastFilterCount
The current number of multicast address receive filters.
MCastFilter
Array containing the addresses of the current multicast address
receive filters.
CurrentAddress
The current HW MAC address for the network interface.
BroadcastAddress
The current HW MAC address for broadcast packets.
PermanentAddress
The permenant HW MAC address for the network interface.
IfType
The interface type of the network interface. See RFC 1700,
section “Number Hardware Type”.
MacAddressChangeable TRUE
if the HW MAC address can be changed.
MultipleTxSupported TRUE
if the network interface can transmit more than one packet
at a time.