/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
-
+ Copyright (C) Dean Camera, 2012.
+
dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
+ www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
+ without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
*
* Header file for DHCP.c.
*/
-
+
#ifndef _DHCP_H_
#define _DHCP_H_
/* Includes: */
#include <avr/io.h>
#include <string.h>
-
+
#include "EthernetProtocols.h"
#include "Ethernet.h"
#include "ProtocolDecoders.h"
/* Macros: */
- /** DHCP operation constant, indicating a request from a host to a DHCP server */
+ /** DHCP operation constant, indicating a request from a host to a DHCP server. */
#define DHCP_OP_BOOTREQUEST 0x01
- /** DHCP operation constant, indicating a reply from a DHCP server to a host */
+ /** DHCP operation constant, indicating a reply from a DHCP server to a host. */
#define DHCP_OP_BOOTREPLY 0x02
-
- /** Hardware type constant, indicating Ethernet as a carrier */
+
+ /** Hardware type constant, indicating Ethernet as a carrier. */
#define DHCP_HTYPE_ETHERNET 0x01
-
- /** Magic boot protocol "cookie", inserted into all BOOTP packets (BOOTP is the carrier of DHCP) */
+
+ /** Magic boot protocol "cookie", inserted into all BOOTP packets (BOOTP is the carrier of DHCP). */
#define DHCP_MAGIC_COOKIE 0x63825363
-
- /** DHCP option list entry header, indicating that a subnet mask will follow */
+
+ /** DHCP option list entry header, indicating that a subnet mask will follow. */
#define DHCP_OPTION_SUBNETMASK 1
- /** DHCP option list entry header, indicating that the DHCP message type constant will follow */
+ /** DHCP option list entry header, indicating that the DHCP message type constant will follow. */
#define DHCP_OPTION_MESSAGETYPE 53
- /** DHCP option list entry header, indicating that the IP address of the DHCP server will follow */
+ /** DHCP option list entry header, indicating that the IP address of the DHCP server will follow. */
#define DHCP_OPTION_DHCPSERVER 54
- /** DHCP option list entry header, used to pad out option data */
+ /** DHCP option list entry header, used to pad out option data. */
#define DHCP_OPTION_PAD 0
- /** DHCP option list entry header, indicating the end of option data */
+ /** DHCP option list entry header, indicating the end of option data. */
#define DHCP_OPTION_END 255
-
- /** Message type constant, used in the DHCP option data field, requesting that a DHCP server offer an IP address */
+
+ /** Message type constant, used in the DHCP option data field, requesting that a DHCP server offer an IP address. */
#define DHCP_MESSAGETYPE_DISCOVER 1
- /** Message type constant, used in the DHCP option data field, indicating that a DHCP server is offering an IP address */
+ /** Message type constant, used in the DHCP option data field, indicating that a DHCP server is offering an IP address. */
#define DHCP_MESSAGETYPE_OFFER 2
- /** Message type constant, used in the DHCP option data field, requesting that a DHCP server lease a given IP address */
+ /** Message type constant, used in the DHCP option data field, requesting that a DHCP server lease a given IP address. */
#define DHCP_MESSAGETYPE_REQUEST 3
- /** Message type constant, used in the DHCP option data field, declining an offered DHCP server IP address lease */
+ /** Message type constant, used in the DHCP option data field, declining an offered DHCP server IP address lease. */
#define DHCP_MESSAGETYPE_DECLINE 4
- /** Message type constant, used in the DHCP option data field, ACKing a host IP lease request */
+ /** Message type constant, used in the DHCP option data field, ACKing a host IP lease request. */
#define DHCP_MESSAGETYPE_ACK 5
- /** Message type constant, used in the DHCP option data field, NACKing a host IP lease request */
+ /** Message type constant, used in the DHCP option data field, NACKing a host IP lease request. */
#define DHCP_MESSAGETYPE_NACK 6
- /** Message type constant, used in the DHCP option data field, indicating that a host is releasing a leased IP address */
+ /** Message type constant, used in the DHCP option data field, indicating that a host is releasing a leased IP address. */
#define DHCP_MESSAGETYPE_RELEASE 7
/* Type Defines: */
uint16_t ElapsedSeconds; /**< Elapsed seconds since the request was made */
uint16_t Flags; /**< BOOTP packet flags */
-
+
IP_Address_t ClientIP; /**< Client IP address, if already leased an IP */
IP_Address_t YourIP; /**< Client IP address */
IP_Address_t NextServerIP; /**< Legacy BOOTP protocol field, unused for DHCP */
IP_Address_t RelayAgentIP; /**< Legacy BOOTP protocol field, unused for DHCP */
-
+
uint8_t ClientHardwareAddress[16]; /**< Hardware (MAC) address of the client making a request to the DHCP server */
uint8_t ServerHostnameString[64]; /**< Legacy BOOTP protocol field, unused for DHCP */
uint8_t BootFileName[128]; /**< Legacy BOOTP protocol field, unused for DHCP */
-
+
uint32_t Cookie; /**< Magic BOOTP protocol cookie to indicate a valid packet */
} DHCP_Header_t;
/* Function Prototypes: */
- int16_t DHCP_ProcessDHCPPacket(void* IPHeaderInStart, void* DHCPHeaderInStart, void* DHCPHeaderOutStart);
+ int16_t DHCP_ProcessDHCPPacket(void* IPHeaderInStart,
+ void* DHCPHeaderInStart,
+ void* DHCPHeaderOutStart);
#endif
+
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