94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
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* Copied from LiMon - BOOTP.
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*
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* Copyright 1994, 1995, 2000 Neil Russell.
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* (See License)
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* Copyright 2000 Paolo Scaffardi
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*/
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#ifndef __BOOTP_H__
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#define __BOOTP_H__
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#ifndef __NET_H__
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#include <net.h>
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#endif /* __NET_H__ */
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/**********************************************************************/
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/*
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* BOOTP header.
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*/
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#if defined(CONFIG_CMD_DHCP)
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/* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */
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#define OPT_FIELD_SIZE 312
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#if defined(CONFIG_BOOTP_VENDOREX)
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extern u8 *dhcp_vendorex_prep(u8 *e); /*rtn new e after add own opts. */
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extern u8 *dhcp_vendorex_proc(u8 *e); /*rtn next e if mine,else NULL */
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#endif
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#else
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#define OPT_FIELD_SIZE 64
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#endif
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struct bootp_hdr {
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u8 bp_op; /* Operation */
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# define OP_BOOTREQUEST 1
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# define OP_BOOTREPLY 2
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u8 bp_htype; /* Hardware type */
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# define HWT_ETHER 1
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u8 bp_hlen; /* Hardware address length */
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# define HWL_ETHER 6
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u8 bp_hops; /* Hop count (gateway thing) */
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u32 bp_id; /* Transaction ID */
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u16 bp_secs; /* Seconds since boot */
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u16 bp_spare1; /* Alignment */
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struct in_addr bp_ciaddr; /* Client IP address */
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struct in_addr bp_yiaddr; /* Your (client) IP address */
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struct in_addr bp_siaddr; /* Server IP address */
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struct in_addr bp_giaddr; /* Gateway IP address */
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u8 bp_chaddr[16]; /* Client hardware address */
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char bp_sname[64]; /* Server host name */
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char bp_file[128]; /* Boot file name */
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char bp_vend[OPT_FIELD_SIZE]; /* Vendor information */
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} __attribute__((packed));
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#define BOOTP_HDR_SIZE sizeof(struct bootp_hdr)
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/**********************************************************************/
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/*
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* Global functions and variables.
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*/
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/* bootp.c */
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extern u32 bootp_id; /* ID of cur BOOTP request */
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extern int bootp_try;
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/* Send a BOOTP request */
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void bootp_reset(void);
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void bootp_request(void);
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/****************** DHCP Support *********************/
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void dhcp_request(void);
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/* DHCP States */
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typedef enum { INIT,
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INIT_REBOOT,
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REBOOTING,
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SELECTING,
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REQUESTING,
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REBINDING,
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BOUND,
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RENEWING } dhcp_state_t;
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#define DHCP_DISCOVER 1
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#define DHCP_OFFER 2
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#define DHCP_REQUEST 3
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#define DHCP_DECLINE 4
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#define DHCP_ACK 5
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#define DHCP_NAK 6
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#define DHCP_RELEASE 7
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/**********************************************************************/
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#endif /* __BOOTP_H__ */
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