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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__ */