bootph Struct Reference
[PXENV_GET_CACHED_INFO]

Format of buffer filled in by pxenv_get_cached_info(). More...

#include <pxe_api.h>

Data Structures
union	bootph_vendor
	DHCP options. More...
Data Fields
UINT8_t	opcode
	Message opcode.
UINT8_t	Hardware
	NIC hardware type.
UINT8_t	Hardlen
	MAC address length.
UINT8_t	Gatehops
	Gateway hops.
UINT32_t	ident
	DHCP transaction id (xid).
UINT16_t	seconds
	Elapsed time.
UINT16_t	Flags
	Flags.
IP4_t	cip
	Client IP address.
IP4_t	yip
	Your IP address.
IP4_t	sip
	Server IP address.
IP4_t	gip
	Gateway IP address.
MAC_ADDR_t	CAddr
	Client MAC address.
UINT8_t	Sname [64]
	Server host name.
UINT8_t	bootfile [128]
	Boot file name.
union bootph::bootph_vendor	vendor
	DHCP options.

---

Detailed Description

Format of buffer filled in by pxenv_get_cached_info().

This somewhat convoluted data structure simply describes the layout of a DHCP packet. Refer to RFC2131 section 2 for a full description.

Definition at line 320 of file pxe_api.h.

---

Field Documentation

UINT8_t bootph::opcode

Message opcode.

Valid values are BOOTP_REQ and BOOTP_REP.

Definition at line 325 of file pxe_api.h.

UINT8_t bootph::Hardware

NIC hardware type.

Valid values are as for s_PXENV_UNDI_GET_INFORMATION::HwType.

Definition at line 330 of file pxe_api.h.

UINT8_t bootph::Hardlen

MAC address length.

Definition at line 331 of file pxe_api.h.

UINT8_t bootph::Gatehops

Gateway hops.

Zero in packets sent by the client. May be non-zero in replies from the DHCP server, if the reply comes via a DHCP relay agent.

Definition at line 338 of file pxe_api.h.

UINT32_t bootph::ident

DHCP transaction id (xid).

Definition at line 339 of file pxe_api.h.

UINT16_t bootph::seconds

Elapsed time.

Number of seconds since the client began the DHCP transaction.

Definition at line 345 of file pxe_api.h.

UINT16_t bootph::Flags

Flags.

This is the bitwise-OR of any of the following values: BOOTP_BCAST.

Definition at line 351 of file pxe_api.h.

IP4_t bootph::cip

Client IP address.

Set only if the client already has an IP address.

Definition at line 356 of file pxe_api.h.

IP4_t bootph::yip

Your IP address.

This is the IP address that the server assigns to the client.

Definition at line 362 of file pxe_api.h.

IP4_t bootph::sip

Server IP address.

This is the IP address of the BOOTP/DHCP server.

Definition at line 367 of file pxe_api.h.

IP4_t bootph::gip

Gateway IP address.

This is the IP address of the BOOTP/DHCP relay agent, if any. It is not (necessarily) the address of the default gateway for routing purposes.

Definition at line 374 of file pxe_api.h.

MAC_ADDR_t bootph::CAddr

Client MAC address.

Definition at line 375 of file pxe_api.h.

UINT8_t bootph::Sname[64]

Server host name.

Definition at line 376 of file pxe_api.h.

UINT8_t bootph::bootfile[128]

Boot file name.

Definition at line 377 of file pxe_api.h.

union bootph::bootph_vendor bootph::vendor

DHCP options.

Don't ask. Just laugh. Then burn a copy of the PXE specification and send Intel an e-mail asking them if they've figured out what a "union" does in C yet.

---

The documentation for this struct was generated from the following file:

• arch/i386/include/pxe_api.h