Intel Extensible Firmware Interface, Specification

Page: 260 / 494

Extensible Firmware Interface Specification
242 12/12/00 Version 1.02
//*******************************************************
// This section defines the data types for DHCP packets, ICMP
// error packets, and TFTP error packets. All of these are byte
// packed data structures.
//*******************************************************
//*******************************************************
// NOTE: ALL THE MULTIBYTE FIELDS IN THESE STRUCTURES ARE
// STORED IN NETWORK ORDER.
//*******************************************************
//*******************************************************
// EFI_PXE_BASE_CODE_DHCPV4_PACKET
//*******************************************************
typedef struct {
UINT8 BootpOpcode;
UINT8
BootpHwType;
UINT8 BootpHwAddrLen;
UINT8 BootpGateHops;
UINT32 BootpIdent;
UINT16 BootpSeconds ;
UINT16 BootpFlags ;
UINT8
BootpCiAddr[4];
UINT8 BootpYiAddr[4];
UINT8 BootpSiAddr[4];
UINT8 BootpGiAddr[4];
UINT8 BootpHwAddr[16];
UINT8 BootpSrvName[64];
UINT8
BootpBootFile[128];
UINT32 DhcpMagik;
UINT8 DhcpOptions[56];
} EFI_PXE_BASE_CODE_DHCPV4_PACKET;
// TBD in EFI v1.1
// typedef struct {
// } EFI_PXE_BASE_CODE_DHCPV6_PACKET;
//*******************************************************
// EFI_PXE_BASE_CODE_PACKET
//*******************************************************
typedef union {
UINT64 Alignment;
UINT8 Raw[1472];
EFI_PXE_BASE_CODE_DHCPV4_PACKET Dhcpv4;
// EFI_PXE_BASE_CODE_DHCPV6_PACKET Dhcpv6;
} EFI_PXE_BASE_CODE_PACKET;