#include "lwip/opt.h"
#include "lwip/arch.h"
#include "lwip/prot/ip4.h"

Include dependency graph for dhcp.h:

Classes
struct	dhcp_msg

Macros
#define	DHCP_CHADDR_LEN 16U

#define	DHCP_SNAME_OFS 44U

#define	DHCP_SNAME_LEN 64U

#define	DHCP_FILE_OFS 108U

#define	DHCP_FILE_LEN 128U

#define	DHCP_MSG_LEN 236U

#define	DHCP_OPTIONS_OFS (DHCP_MSG_LEN + 4U) /* 4 byte: cookie */

#define	DHCP_MIN_OPTIONS_LEN 68U

#define	DHCP_OPTIONS_LEN DHCP_MIN_OPTIONS_LEN

#define	DHCP_BOOTREQUEST 1

#define	DHCP_BOOTREPLY 2

#define	DHCP_DISCOVER 1

#define	DHCP_OFFER 2

#define	DHCP_REQUEST 3

#define	DHCP_DECLINE 4

#define	DHCP_ACK 5

#define	DHCP_NAK 6

#define	DHCP_RELEASE 7

#define	DHCP_INFORM 8

#define	DHCP_MAGIC_COOKIE 0x63825363UL

#define	DHCP_OPTION_PAD 0

#define	DHCP_OPTION_SUBNET_MASK 1 /* RFC 2132 3.3 */

#define	DHCP_OPTION_ROUTER 3

#define	DHCP_OPTION_DNS_SERVER 6

#define	DHCP_OPTION_HOSTNAME 12

#define	DHCP_OPTION_IP_TTL 23

#define	DHCP_OPTION_MTU 26

#define	DHCP_OPTION_BROADCAST 28

#define	DHCP_OPTION_TCP_TTL 37

#define	DHCP_OPTION_NTP 42

#define	DHCP_OPTION_END 255

#define	DHCP_OPTION_REQUESTED_IP 50 /* RFC 2132 9.1, requested IP address */

#define	DHCP_OPTION_LEASE_TIME 51 /* RFC 2132 9.2, time in seconds, in 4 bytes */

#define	DHCP_OPTION_OVERLOAD 52 /* RFC2132 9.3, use file and/or sname field for options */

#define	DHCP_OPTION_MESSAGE_TYPE 53 /* RFC 2132 9.6, important for DHCP */

#define	DHCP_OPTION_MESSAGE_TYPE_LEN 1

#define	DHCP_OPTION_SERVER_ID 54 /* RFC 2132 9.7, server IP address */

#define	DHCP_OPTION_PARAMETER_REQUEST_LIST 55 /* RFC 2132 9.8, requested option types */

#define	DHCP_OPTION_MAX_MSG_SIZE 57 /* RFC 2132 9.10, message size accepted >= 576 */

#define	DHCP_OPTION_MAX_MSG_SIZE_LEN 2

#define	DHCP_OPTION_T1 58 /* T1 renewal time */

#define	DHCP_OPTION_T2 59 /* T2 rebinding time */

#define	DHCP_OPTION_US 60

#define	DHCP_OPTION_CLIENT_ID 61

#define	DHCP_OPTION_TFTP_SERVERNAME 66

#define	DHCP_OPTION_BOOTFILE 67

#define	DHCP_OVERLOAD_NONE 0

#define	DHCP_OVERLOAD_FILE 1

#define	DHCP_OVERLOAD_SNAME 2

#define	DHCP_OVERLOAD_SNAME_FILE 3

Enumerations
enum	dhcp_state_enum_t { DHCP_STATE_OFF = 0 , DHCP_STATE_REQUESTING = 1 , DHCP_STATE_INIT = 2 , DHCP_STATE_REBOOTING = 3 , DHCP_STATE_REBINDING = 4 , DHCP_STATE_RENEWING = 5 , DHCP_STATE_SELECTING = 6 , DHCP_STATE_INFORMING = 7 , DHCP_STATE_CHECKING = 8 , DHCP_STATE_PERMANENT = 9 , DHCP_STATE_BOUND = 10 , DHCP_STATE_RELEASING = 11 , DHCP_STATE_BACKING_OFF = 12 }

Variables
PACK_STRUCT_BEGIN struct dhcp_msg	PACK_STRUCT_STRUCT

Detailed Description

DHCP protocol definitions

Macro Definition Documentation

◆ DHCP_ACK

#define DHCP_ACK 5

◆ DHCP_BOOTREPLY

#define DHCP_BOOTREPLY 2

◆ DHCP_BOOTREQUEST

#define DHCP_BOOTREQUEST 1

◆ DHCP_CHADDR_LEN

#define DHCP_CHADDR_LEN 16U

◆ DHCP_DECLINE

#define DHCP_DECLINE 4

◆ DHCP_DISCOVER

#define DHCP_DISCOVER 1

◆ DHCP_FILE_LEN

#define DHCP_FILE_LEN 128U

◆ DHCP_FILE_OFS

#define DHCP_FILE_OFS 108U

◆ DHCP_INFORM

#define DHCP_INFORM 8

◆ DHCP_MAGIC_COOKIE

#define DHCP_MAGIC_COOKIE 0x63825363UL

◆ DHCP_MIN_OPTIONS_LEN

#define DHCP_MIN_OPTIONS_LEN 68U

◆ DHCP_MSG_LEN

#define DHCP_MSG_LEN 236U

◆ DHCP_NAK

#define DHCP_NAK 6

◆ DHCP_OFFER

#define DHCP_OFFER 2

◆ DHCP_OPTION_BOOTFILE

#define DHCP_OPTION_BOOTFILE 67

◆ DHCP_OPTION_BROADCAST

#define DHCP_OPTION_BROADCAST 28

◆ DHCP_OPTION_CLIENT_ID

#define DHCP_OPTION_CLIENT_ID 61

◆ DHCP_OPTION_DNS_SERVER

#define DHCP_OPTION_DNS_SERVER 6

◆ DHCP_OPTION_END

#define DHCP_OPTION_END 255

◆ DHCP_OPTION_HOSTNAME

#define DHCP_OPTION_HOSTNAME 12

◆ DHCP_OPTION_IP_TTL

#define DHCP_OPTION_IP_TTL 23

◆ DHCP_OPTION_LEASE_TIME

#define DHCP_OPTION_LEASE_TIME 51 /* RFC 2132 9.2, time in seconds, in 4 bytes */

◆ DHCP_OPTION_MAX_MSG_SIZE

#define DHCP_OPTION_MAX_MSG_SIZE 57 /* RFC 2132 9.10, message size accepted >= 576 */

◆ DHCP_OPTION_MAX_MSG_SIZE_LEN

#define DHCP_OPTION_MAX_MSG_SIZE_LEN 2

◆ DHCP_OPTION_MESSAGE_TYPE

#define DHCP_OPTION_MESSAGE_TYPE 53 /* RFC 2132 9.6, important for DHCP */

◆ DHCP_OPTION_MESSAGE_TYPE_LEN

#define DHCP_OPTION_MESSAGE_TYPE_LEN 1

◆ DHCP_OPTION_MTU

#define DHCP_OPTION_MTU 26

◆ DHCP_OPTION_NTP

#define DHCP_OPTION_NTP 42

◆ DHCP_OPTION_OVERLOAD

#define DHCP_OPTION_OVERLOAD 52 /* RFC2132 9.3, use file and/or sname field for options */

◆ DHCP_OPTION_PAD

#define DHCP_OPTION_PAD 0

◆ DHCP_OPTION_PARAMETER_REQUEST_LIST

#define DHCP_OPTION_PARAMETER_REQUEST_LIST 55 /* RFC 2132 9.8, requested option types */

◆ DHCP_OPTION_REQUESTED_IP

#define DHCP_OPTION_REQUESTED_IP 50 /* RFC 2132 9.1, requested IP address */

◆ DHCP_OPTION_ROUTER

#define DHCP_OPTION_ROUTER 3

◆ DHCP_OPTION_SERVER_ID

#define DHCP_OPTION_SERVER_ID 54 /* RFC 2132 9.7, server IP address */

◆ DHCP_OPTION_SUBNET_MASK

#define DHCP_OPTION_SUBNET_MASK 1 /* RFC 2132 3.3 */

◆ DHCP_OPTION_T1

#define DHCP_OPTION_T1 58 /* T1 renewal time */

◆ DHCP_OPTION_T2

#define DHCP_OPTION_T2 59 /* T2 rebinding time */

◆ DHCP_OPTION_TCP_TTL

#define DHCP_OPTION_TCP_TTL 37

◆ DHCP_OPTION_TFTP_SERVERNAME

#define DHCP_OPTION_TFTP_SERVERNAME 66

◆ DHCP_OPTION_US

#define DHCP_OPTION_US 60

◆ DHCP_OPTIONS_LEN

#define DHCP_OPTIONS_LEN DHCP_MIN_OPTIONS_LEN

make sure user does not configure this too small allow this to be configured in lwipopts.h, but not too small set this to be sufficient for your options in outgoing DHCP msgs

◆ DHCP_OPTIONS_OFS

#define DHCP_OPTIONS_OFS (DHCP_MSG_LEN + 4U) /* 4 byte: cookie */

◆ DHCP_OVERLOAD_FILE

#define DHCP_OVERLOAD_FILE 1

◆ DHCP_OVERLOAD_NONE

#define DHCP_OVERLOAD_NONE 0

◆ DHCP_OVERLOAD_SNAME

#define DHCP_OVERLOAD_SNAME 2

◆ DHCP_OVERLOAD_SNAME_FILE

#define DHCP_OVERLOAD_SNAME_FILE 3

◆ DHCP_RELEASE

#define DHCP_RELEASE 7

◆ DHCP_REQUEST

#define DHCP_REQUEST 3

◆ DHCP_SNAME_LEN

#define DHCP_SNAME_LEN 64U

◆ DHCP_SNAME_OFS

#define DHCP_SNAME_OFS 44U

Enumeration Type Documentation

◆ dhcp_state_enum_t

enum dhcp_state_enum_t

Enumerator
DHCP_STATE_OFF
DHCP_STATE_REQUESTING
DHCP_STATE_INIT
DHCP_STATE_REBOOTING
DHCP_STATE_REBINDING
DHCP_STATE_RENEWING
DHCP_STATE_SELECTING
DHCP_STATE_INFORMING
DHCP_STATE_CHECKING
DHCP_STATE_PERMANENT
DHCP_STATE_BOUND
DHCP_STATE_RELEASING
DHCP_STATE_BACKING_OFF

Variable Documentation

◆ PACK_STRUCT_STRUCT

PACK_STRUCT_BEGIN struct dhcp_msg PACK_STRUCT_STRUCT

Classes

Macros

Enumerations

Variables