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packets_data.h File Reference

Go to the source code of this file.

Data Structures
struct	dhcp82
	This structure contains the option 82 values. More...
struct	dhcp_packet
	Structure of a DHCP packet. More...
struct	m_dhcp82
	For alignement problem, we must use a "per byte" structure. 'unsigned long int' and 'unsigned short int' can not be anywhere in memory. More...
struct	op_control
	This structure is associated with all packets. It contains information about the packets. More...
struct	opt
	This structure is associated with all packets. It is used to store a packet option. More...
Defines
#define	DSLAM_UNKNOWN   -1
	The constants is used to represent a unknown DSLAM's vendor.
#define	DSLAM_UTSTARCOM   0
	The constants represents an UT STARCOM DSLAM.
#define	DSLAM_ALCATEL   1
	The constants represents an ALCATEL DSLAM.
#define	NODE_BUFFER_SIZE   21
	Number of bytes used to store the Node ID (including the final nul character). More...
#define	VALUE_MAX_SIZE   2048
	Maximum number of bytes for a DHCP option value.
#define	OPTION_SIZE   2048
	Maximum size for the option's part. This size includes the magic number (4 bytes).
#define	PACKET_SIZE   (236 + OPTION_SIZE)
	Maximum size (in bytes) of a packets. A packet contains: A fixed part (which size is 236 bytes). See structure 'struct dhcp_packet'. A variable lenght part, for the options (maximum of OPTION_SIZE bytes). .
#define	DHCPDISCOVER   1
	Value for the option 53 (DHCP Message Type): Identifies the DHCP DISCOVER.
#define	DHCPOFFER   2
	Value for the option 53 (DHCP Message Type): dentifies the DHCP OFFER.
#define	DHCPREQUEST   3
	Value for the option 53 (DHCP Message Type): dentifies the DHCP REQUEST.
#define	DHCPDECLINE   4
	Value for the option 53 (DHCP Message Type): dentifies the DHCP DECLINE.
#define	DHCPACK   5
	Value for the option 53 (DHCP Message Type): dentifies the DHCP ACK.
#define	DHCPNAK   6
	Value for the option 53 (DHCP Message Type): dentifies the DHCP NACK.
#define	DHCPRELEASE   7
	Value for the option 53 (DHCP Message Type): dentifies the DHCP RELEASE.
#define	DHCPINFORM   8
	Value for the option 53 (DHCP Message Type): dentifies the DHCP INFORM.
#define	DHCPDISCOVER_BYTE   "\x01"
	Value for the option 53 (DHCP Message Type): Identifies the DHCP DISCOVER in string notation.
#define	DHCPDISCOVER_HEXA   "01"
	Value for the option 53 (DHCP Message Type): Identifies the DHCP DISCOVER in hexa.
#define	DHCPOFFER_BYTE   "\x02"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP OFFER in string notation.
#define	DHCPOFFER_HEXA   "02"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP OFFER in hexa.
#define	DHCPREQUEST_BYTE   "\x03"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP REQUEST in string notation.
#define	DHCPREQUEST_HEXA   "03"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP REQUEST in hexa.
#define	DHCPDECLINE_BYTE   "\x04"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP DECLINE in string notation.
#define	DHCPDECLINE_HEXA   "04"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP DECLINE in hexa.
#define	DHCPACK_BYTE   "\x05"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP ACK in string notation.
#define	DHCPACK_HEXA   "05"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP ACK in hexa.
#define	DHCPNAK_BYTE   "\x06"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP NACK in string notation.
#define	DHCPNAK_HEXA   "06"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP NACK in hexa.
#define	DHCPRELEASE_BYTE   "\x07"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP RELEASE in string notation.
#define	DHCPRELEASE_HEXA   "07"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP RELEASE in hexa.
#define	DHCPINFORM_BYTE   "\x08"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP INFORM in string notation.
#define	DHCPINFORM_HEXA   "08"
	Value for the option 53 (DHCP Message Type): dentifies the DHCP INFORM in hexa.
#define	BOOTREQUEST   1
	Value for field 'op' of a DHCP packet. If 'op' is set to 'BOOTREQUEST', it means that the packet comes from the client (to the server).
#define	BOOTREPLY   2
	Value for field 'op' of a DHCP packet. If 'op' is set to 'BOOTREPLY', it means that the packet comes from the server (to the client).

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Detailed Description

This file contains all definitions for DHCP packets data storage.

Definition in file packets_data.h.

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Define Documentation

#define NODE_BUFFER_SIZE   21

Number of bytes used to store the Node ID (including the final nul character). Remarks: Alcatel's DSLAMs need up to 20 bytes to represent the node ID. Utstarcom's DSLAMs need up to 5 bytes (maximum value is "65535" - unsigned shot int). Warning: If you modify the value of this constant, you must also modify the value of the constant NODE_ID_SIZE (see file "tables.h"). Definition at line 34 of file packets_data.h. Referenced by main(), and packets_parse_options().

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