dhcp.h File Reference

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Detailed Description

Definition in file dhcp.h.

#include "global.h"
#include "net.h"

Go to the source code of this file.

Defines
#define	BOOTP_HEADER_LEN   236
	length of BOOTP header not including options
#define	BOOTP_OP_BOOTREQUEST   1
	BOOTP Request operation (message from client to server).
#define	BOOTP_OP_BOOTREPLY   2
	BOOTP Reply operation (message from server to client).
#define	BOOTP_HTYPE_ETHERNET   1
#define	BOOTP_HLEN_ETHERNET   6
#define	DHCP_HEADER_LEN   240
	length of DHCP header not including options
#define	DHCP_UDP_SERVER_PORT   67
	UDP port where DHCP requests should be sent.
#define	DHCP_UDP_CLIENT_PORT   68
	UDP port clients will receive DHCP replies.
#define	DHCP_OPT_PAD   0
	token padding value (make be skipped)
#define	DHCP_OPT_NETMASK   1
	subnet mask client should use (4 byte mask)
#define	DHCP_OPT_ROUTERS   3
	routers client should use (IP addr list)
#define	DHCP_OPT_TIMESERVERS   4
	time servers client should use (IP addr list)
#define	DHCP_OPT_NAMESERVERS   5
	name servers client should use (IP addr list)
#define	DHCP_OPT_DNSSERVERS   6
	DNS servers client should use (IP addr list).
#define	DHCP_OPT_HOSTNAME   12
	host name client should use (string)
#define	DHCP_OPT_DOMAINNAME   15
	domain name client should use (string)
#define	DHCP_OPT_REQUESTEDIP   50
	IP address requested by client (IP address).
#define	DHCP_OPT_LEASETIME   51
	DHCP Lease Time (uint32 seconds).
#define	DHCP_OPT_DHCPMSGTYPE   53
	DHCP message type (1 byte).
#define	DHCP_OPT_SERVERID   54
	Server Identifier (IP address).
#define	DHCP_OPT_PARAMREQLIST   55
	Paramerter Request List (n OPT codes).
#define	DHCP_OPT_RENEWALTIME   58
	DHCP Lease Renewal Time (uint32 seconds).
#define	DHCP_OPT_REBINDTIME   59
	DHCP Lease Rebinding Time (uint32 seconds).
#define	DHCP_OPT_END   255
	token end value (marks end of options list)
#define	DHCP_MSG_DHCPDISCOVER   1
	DISCOVER is broadcast by client to solicit OFFER from any/all DHCP servers.
#define	DHCP_MSG_DHCPOFFER   2
	OFFER(s) are made to client by server to offer IP address and config info.
#define	DHCP_MSG_DHCPREQUEST   3
	REQUEST is made my client in response to best/favorite OFFER message.
#define	DHCP_MSG_DHCPDECLINE   4
	DECLINE may be sent by client to server to indicate IP already in use.
#define	DHCP_MSG_DHCPACK   5
	ACK is sent to client by server in confirmation of REQUEST, contains config and IP.
#define	DHCP_MSG_DHCPNAK   6
	NAK is sent to client by server to indicate problem with REQUEST.
#define	DHCP_MSG_DHCPRELEASE   7
	RELEASE is sent by client to server to relinquish DHCP lease on IP address, etc.
#define	DHCP_MSG_DHCPINFORM   8
	INFORM is sent by client to server to request config info, IP address configured locally.
Functions
void	dhcpInit (void)
void	dhcpIn (unsigned int len, struct netDhcpHeader *packet)
void	dhcpRequest (void)
void	dhcpRelease (void)
void	dhcpTimer (void)
uint8_t	dhcpGetOption (uint8_t *options, uint8_t optcode, uint8_t optlen, void *optvalptr)
uint8_t *	dhcpSetOption (uint8_t *options, uint8_t optcode, uint8_t optlen, void *optvalptr)
void	dhcpPrintHeader (struct netDhcpHeader *packet)
Variables
netBootpHeader	GNUC_PACKED
	Bootp Header (DHCP is transported by BOOTP/UDP/IP).

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