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1/*
2 * Copied from LiMon - BOOTP.
3 *
4 * Copyright 1994, 1995, 2000 Neil Russell.
5 * (See License)
6 * Copyright 2000 Paolo Scaffardi
7 */
8
9#ifndef __BOOTP_H__
10#define __BOOTP_H__
11
12#ifndef __NET_H__
13#include <net.h>
14#endif /* __NET_H__ */
15
16/**********************************************************************/
17
18/*
19 * BOOTP header.
20 */
21#if defined(CONFIG_CMD_DHCP)
22/* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */
23#define OPT_FIELD_SIZE 312
24#if defined(CONFIG_BOOTP_VENDOREX)
25extern u8 *dhcp_vendorex_prep(u8 *e); /*rtn new e after add own opts. */
26extern u8 *dhcp_vendorex_proc(u8 *e); /*rtn next e if mine,else NULL */
27#endif
28#else
29#define OPT_FIELD_SIZE 64
30#endif
31
32struct bootp_hdr {
33 u8 bp_op; /* Operation */
34# define OP_BOOTREQUEST 1
35# define OP_BOOTREPLY 2
36 u8 bp_htype; /* Hardware type */
37# define HWT_ETHER 1
38 u8 bp_hlen; /* Hardware address length */
39# define HWL_ETHER 6
40 u8 bp_hops; /* Hop count (gateway thing) */
41 u32 bp_id; /* Transaction ID */
42 u16 bp_secs; /* Seconds since boot */
43 u16 bp_spare1; /* Alignment */
44 struct in_addr bp_ciaddr; /* Client IP address */
45 struct in_addr bp_yiaddr; /* Your (client) IP address */
46 struct in_addr bp_siaddr; /* Server IP address */
47 struct in_addr bp_giaddr; /* Gateway IP address */
48 u8 bp_chaddr[16]; /* Client hardware address */
49 char bp_sname[64]; /* Server host name */
50 char bp_file[128]; /* Boot file name */
51 char bp_vend[OPT_FIELD_SIZE]; /* Vendor information */
52};
53
54#define BOOTP_HDR_SIZE sizeof(struct bootp_hdr)
55
56/**********************************************************************/
57/*
58 * Global functions and variables.
59 */
60
61/* bootp.c */
62extern u32 bootp_id; /* ID of cur BOOTP request */
63extern int bootp_try;
64
65
66/* Send a BOOTP request */
67void bootp_reset(void);
68void bootp_request(void);
69
70/****************** DHCP Support *********************/
71void dhcp_request(void);
72
73/* DHCP States */
74typedef enum { INIT,
75 INIT_REBOOT,
76 REBOOTING,
77 SELECTING,
78 REQUESTING,
79 REBINDING,
80 BOUND,
81 RENEWING } dhcp_state_t;
82
83#define DHCP_DISCOVER 1
84#define DHCP_OFFER 2
85#define DHCP_REQUEST 3
86#define DHCP_DECLINE 4
87#define DHCP_ACK 5
88#define DHCP_NAK 6
89#define DHCP_RELEASE 7
90
91/**********************************************************************/
92
93#endif /* __BOOTP_H__ */