--- /dev/null
+/*\r
+ LUFA Library\r
+ Copyright (C) Dean Camera, 2009.\r
+ \r
+ dean [at] fourwalledcubicle [dot] com\r
+ www.fourwalledcubicle.com\r
+*/\r
+\r
+/*\r
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, and distribute this software\r
+ and its documentation for any purpose and without fee is hereby\r
+ granted, provided that the above copyright notice appear in all\r
+ copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting\r
+ documentation, and that the name of the author not be used in\r
+ advertising or publicity pertaining to distribution of the\r
+ software without specific, written prior permission.\r
+\r
+ The author disclaim all warranties with regard to this\r
+ software, including all implied warranties of merchantability\r
+ and fitness. In no event shall the author be liable for any\r
+ special, indirect or consequential damages or any damages\r
+ whatsoever resulting from loss of use, data or profits, whether\r
+ in an action of contract, negligence or other tortious action,\r
+ arising out of or in connection with the use or performance of\r
+ this software.\r
+*/\r
+\r
+/** \file\r
+ *\r
+ * Header file for DHCP.c.\r
+ */\r
+ \r
+#ifndef _DHCP_H_\r
+#define _DHCP_H_\r
+\r
+ /* Includes: */\r
+ #include <avr/io.h>\r
+ #include <string.h>\r
+ \r
+ #include "EthernetProtocols.h"\r
+ #include "Ethernet.h"\r
+ #include "ProtocolDecoders.h"\r
+\r
+ /* Macros: */\r
+ /** DHCP operation constant, indicating a request from a host to a DHCP server */\r
+ #define DHCP_OP_BOOTREQUEST 0x01\r
+\r
+ /** DHCP operation constant, indicating a reply from a DHCP server to a host */\r
+ #define DHCP_OP_BOOTREPLY 0x02\r
+ \r
+ /** Hardware type constant, indicating Ethernet as a carrier */\r
+ #define DHCP_HTYPE_ETHERNET 0x01\r
+ \r
+ /** Magic boot protocol "cookie", inserted into all BOOTP packets (BOOTP is the carrier of DHCP) */\r
+ #define DHCP_MAGIC_COOKIE 0x63825363\r
+ \r
+ /** DHCP option list entry header, indicating that a subnet mask will follow */\r
+ #define DHCP_OPTION_SUBNETMASK 1\r
+\r
+ /** DHCP option list entry header, indicating that the DHCP message type constant will follow */\r
+ #define DHCP_OPTION_MESSAGETYPE 53\r
+\r
+ /** DHCP option list entry header, indicating that the IP address of the DHCP server will follow */\r
+ #define DHCP_OPTION_DHCPSERVER 54\r
+\r
+ /** DHCP option list entry header, used to pad out option data */\r
+ #define DHCP_OPTION_PAD 0\r
+\r
+ /** DHCP option list entry header, indicating the end of option data */\r
+ #define DHCP_OPTION_END 255\r
+ \r
+ /** Message type constant, used in the DHCP option data field, requesting that a DHCP server offer an IP address */\r
+ #define DHCP_MESSAGETYPE_DISCOVER 1\r
+\r
+ /** Message type constant, used in the DHCP option data field, indicating that a DHCP server is offering an IP address */\r
+ #define DHCP_MESSAGETYPE_OFFER 2\r
+\r
+ /** Message type constant, used in the DHCP option data field, requesting that a DHCP server lease a given IP address */\r
+ #define DHCP_MESSAGETYPE_REQUEST 3\r
+\r
+ /** Message type constant, used in the DHCP option data field, declining an offered DHCP server IP address lease */\r
+ #define DHCP_MESSAGETYPE_DECLINE 4\r
+\r
+ /** Message type constant, used in the DHCP option data field, ACKing a host IP lease request */\r
+ #define DHCP_MESSAGETYPE_ACK 5\r
+\r
+ /** Message type constant, used in the DHCP option data field, NACKing a host IP lease request */\r
+ #define DHCP_MESSAGETYPE_NACK 6\r
+\r
+ /** Message type constant, used in the DHCP option data field, indicating that a host is releasing a leased IP address */\r
+ #define DHCP_MESSAGETYPE_RELEASE 7\r
+\r
+ /* Type Defines: */\r
+ /** Type define for a DHCP packet inside an Ethernet frame. */\r
+ typedef struct\r
+ {\r
+ uint8_t Operation; /**< DHCP operation, either DHCP_OP_BOOTREQUEST or DHCP_OP_BOOTREPLY */\r
+ uint8_t HardwareType; /**< Hardware carrier type constant */\r
+ uint8_t HardwareAddressLength; /**< Length in bytes of a hardware (MAC) address on the network */\r
+ uint8_t Hops; /**< Number of hops required to reach the server, unused */\r
+\r
+ uint32_t TransactionID; /**< Unique ID of the DHCP packet, for positive matching between sent and received packets */\r
+\r
+ uint16_t ElapsedSeconds; /**< Elapsed seconds since the request was made */\r
+ uint16_t Flags; /**< BOOTP packet flags */\r
+ \r
+ IP_Address_t ClientIP; /**< Client IP address, if already leased an IP */\r
+ IP_Address_t YourIP; /**< Client IP address */\r
+ IP_Address_t NextServerIP; /**< Legacy BOOTP protocol field, unused for DHCP */\r
+ IP_Address_t RelayAgentIP; /**< Legacy BOOTP protocol field, unused for DHCP */\r
+ \r
+ uint8_t ClientHardwareAddress[16]; /**< Hardware (MAC) address of the client making a request to the DHCP server */\r
+ uint8_t ServerHostnameString[64]; /**< Legacy BOOTP protocol field, unused for DHCP */\r
+ uint8_t BootFileName[128]; /**< Legacy BOOTP protocol field, unused for DHCP */\r
+ \r
+ uint32_t Cookie; /**< Magic BOOTP protocol cookie to indicate a valid packet */\r
+ } DHCP_Header_t;\r
+\r
+ /* Function Prototypes: */\r
+ int16_t DHCP_ProcessDHCPPacket(void* IPHeaderInStart, void* DHCPHeaderInStart, void* DHCPHeaderOutStart);\r
+\r
+#endif\r
projects / pub / lufa.git / blobdiff