+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2021.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2021 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- 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
- 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
- software without specific, written prior permission.
-
- The author disclaims all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * 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. */
- #define DHCP_OP_BOOTREQUEST 0x01
-
- /** 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. */
- #define DHCP_HTYPE_ETHERNET 0x01
-
- /** 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. */
- #define DHCP_OPTION_SUBNETMASK 1
-
- /** DHCP option list entry header, indicating that the Lease Time will follow. */
- #define DHCP_OPTION_LEASETIME 51
-
- /** 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. */
- #define DHCP_OPTION_DHCPSERVER 54
-
- /** 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. */
- #define DHCP_OPTION_END 255
-
- /** 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. */
- #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. */
- #define DHCP_MESSAGETYPE_REQUEST 3
-
- /** 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. */
- #define DHCP_MESSAGETYPE_ACK 5
-
- /** 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. */
- #define DHCP_MESSAGETYPE_RELEASE 7
-
- /* Type Defines: */
- /** Type define for a DHCP packet inside an Ethernet frame. */
- typedef struct
- {
- uint8_t Operation; /**< DHCP operation, either DHCP_OP_BOOTREQUEST or DHCP_OP_BOOTREPLY */
- uint8_t HardwareType; /**< Hardware carrier type constant */
- uint8_t HardwareAddressLength; /**< Length in bytes of a hardware (MAC) address on the network */
- uint8_t Hops; /**< Number of hops required to reach the server, unused */
-
- uint32_t TransactionID; /**< Unique ID of the DHCP packet, for positive matching between sent and received packets */
-
- 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);
-
-#endif
-
projects / pub / lufa.git / blobdiff