Intel Extensible Firmware Interface - Manual (Page 630)

Extensible Firmware Interface Specification
15-24 12/01/02 Version 1.10
EFI_SIMPLE_NETWORK.Receive()
Summary
Receives a packet from a network interface.
Prototype
EFI_STATUS
(EFIAPI *EFI_SIMPLE_NETWORK_RECEIVE) (
IN EFI_SIMPLE_NETWORK *This
OUT UINTN *HeaderSize OPTIONAL,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer,
OUT EFI_MAC_ADDRESS *SrcAddr OPTIONAL,
OUT EFI_MAC_ADDRESS *DestAddr OPTIONAL,
OUT UINT16 *Protocol OPTIONAL
);
Parameters
This A pointer to the EFI_SIMPLE_NETWORK instance.
HeaderSize The size, in bytes, of the media header received on the network
interface. If this parameter is
NULL , then the media header size
will not be returned.
BufferSize On entry, the size, in bytes, of Buffer . On exit, the size, in
bytes, of the packet that was received on the network interface.
Buffer A pointer to the data buffer to receive both the media header and
the data.
SrcAddr The source HW MAC address. If this parameter is NULL , the
HW MAC source address will not be extracted from the media
header.
DestAddr The destination HW MAC address. If this parameter is NULL ,
the HW MAC destination address will not be extracted from the
media header.
Protocol The media header type. If this parameter is NULL , then the
protocol will not be extracted from the media header. See
RFC 1700 section “Ether Types” for examples.