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net/bootp.h
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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 defined(CONFIG_CMD_DHCP)
/* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */
#define OPT_FIELD_SIZE 312
#if defined(CONFIG_BOOTP_VENDOREX)
extern u8 *dhcp_vendorex_prep(u8 *e); /*rtn new e after add own opts. */
extern u8 *dhcp_vendorex_proc(u8 *e); /*rtn next e if mine,else NULL */
#endif
#else
#define OPT_FIELD_SIZE 64
#endif
struct bootp_hdr {
u8 bp_op; /* Operation */
# define OP_BOOTREQUEST 1
# define OP_BOOTREPLY 2
u8 bp_htype; /* Hardware type */
# define HWT_ETHER 1
u8 bp_hlen; /* Hardware address length */
# define HWL_ETHER 6
u8 bp_hops; /* Hop count (gateway thing) */
u32 bp_id; /* Transaction ID */
u16 bp_secs; /* Seconds since boot */
u16 bp_spare1; /* Alignment */
struct in_addr bp_ciaddr; /* Client IP address */
struct in_addr bp_yiaddr; /* Your (client) IP address */
struct in_addr bp_siaddr; /* Server IP address */
struct in_addr bp_giaddr; /* Gateway IP address */
u8 bp_chaddr[16]; /* Client hardware address */
char bp_sname[64]; /* Server host name */
char bp_file[128]; /* Boot file name */
char bp_vend[OPT_FIELD_SIZE]; /* Vendor information */
} __attribute__((packed));
#define BOOTP_HDR_SIZE sizeof(struct bootp_hdr)
/**********************************************************************/
/*
* Global functions and variables.
*/
/* bootp.c */
extern u32 bootp_id; /* ID of cur BOOTP request */
extern int bootp_try;
/* Send a BOOTP request */
void bootp_reset(void);
void bootp_request(void);
/****************** DHCP Support *********************/
void dhcp_request(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
/**********************************************************************/
#endif /* __BOOTP_H__ */
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