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/*
 *	Copied from LiMon - BOOTP.
 *
 *	Copyright 1994, 1995, 2000 Neil Russell.
 *	(See License)
 *	Copyright 2000 Paolo Scaffardi
 */
 
#ifndef __BOOTP_H__
#define __BOOTP_H__
 
#ifndef __NET_H__
#include	"net.h"
#endif /* __NET_H__ */
 
/**********************************************************************/
 
/*
 *	BOOTP header.
 */
#if (CONFIG_COMMANDS & CFG_CMD_DHCP)
#define OPT_SIZE 312		/* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */
#else
#define OPT_SIZE 64
#endif
 
typedef struct {
	unsigned char bp_op;	/* Operation                            */
# define OP_BOOTREQUEST	1
# define OP_BOOTREPLY	2
	unsigned char bp_htype;	/* Hardware type                        */
# define HWT_ETHER	1
	unsigned char bp_hlen;	/* Hardware address length              */
# define HWL_ETHER	6
	unsigned char bp_hops;	/* Hop count (gateway thing)            */
	unsigned long bp_id;	/* Transaction ID                       */
	unsigned short bp_secs;	/* Seconds since boot                   */
	unsigned short bp_spare1;	/* Alignment                            */
	IPaddr_t bp_ciaddr;	/* Client IP address                    */
	IPaddr_t bp_yiaddr;	/* Your (client) IP address             */
	IPaddr_t bp_siaddr;	/* Server IP address                    */
	IPaddr_t bp_giaddr;	/* Gateway IP address                   */
	unsigned char bp_chaddr[16];	/* Client hardware address              */
	char bp_sname[64];	/* Server host name                     */
	char bp_file[128];	/* Boot file name                       */
	char bp_vend[OPT_SIZE];	/* Vendor information                   */
} Bootp_t;
 
#define BOOTP_HDR_SIZE	sizeof (Bootp_t)
#define BOOTP_SIZE	(ETHER_HDR_SIZE + IP_HDR_SIZE + BOOTP_HDR_SIZE)
 
/**********************************************************************/
/*
 *	Global functions and variables.
 */
 
/* bootp.c */
extern unsigned long BootpID;	/* ID of cur BOOTP request              */
extern char BootFile[128];	/* Boot file name                       */
extern int BootpTry;
#ifdef CONFIG_BOOTP_RANDOM_DELAY
unsigned long seed1, seed2;	/* seed for random BOOTP delay          */
#endif
 
/* Send a BOOTP request */
extern void BootpRequest(void);
 
/****************** DHCP Support *********************/
extern void DhcpRequest(void);
 
/* DHCP States */
typedef enum { INIT,
	INIT_REBOOT,
	REBOOTING,
	SELECTING,
	REQUESTING,
	REBINDING,
	BOUND,
	RENEWING
} dhcp_state_t;
 
#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 SELECT_TIMEOUT 3	/* Seconds to wait for offers */
 
/**********************************************************************/
 
#endif /* __BOOTP_H__ */