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BOOTP.H
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Text File
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1994-11-20
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2KB
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74 lines
/*
* Bootstrap Protocol (BOOTP)
* Based on RFC 951.
*/
#define BOOTREQUEST 1 /* bootp.bp_op */
#define BOOTREPLY 2
/*
* structure for send and receives
*/
typedef struct bootp {
byte bp_op; /* packet op code / message type. */
byte bp_htype; /* hardware address type, 1 = 10 mb ethernet */
byte bp_hlen; /* hardware address len, eg '6' for 10mb eth */
byte bp_hops; /* client sets to zero, optionally used by
gateways in cross-gateway booting. */
longword bp_xid; /* transaction ID, a random number */
word bp_secs; /* filled in by client, seconds elapsed since
client started trying to boot. */
word bp_spare;
longword bp_ciaddr; /* client IP address filled in by client if known*/
longword bp_yiaddr; /* 'your' (client) IP address
filled by server if client doesn't know */
longword bp_siaddr; /* server IP address returned in bootreply */
longword bp_giaddr; /* gateway IP address,
used in optional cross-gateway booting. */
byte bp_chaddr[16]; /* client hardware address, filled by client */
byte bp_sname[64]; /* optional server host name, null terminated*/
byte bp_file[128]; /* boot file name, null terminated string
'generic' name or null in bootrequest,
fully qualified directory-path
name in bootreply. */
byte bp_vend[ 64]; /* optional vendor-specific area */
};
extern struct bootp _bootp;
extern word sock_inactive;
/*
* UDP port numbers, server and client.
*/
#define IPPORT_BOOTPS 67
#define IPPORT_BOOTPC 68
/******** the following is stolen from NCSA which came from CUTCP *********/
/* I have not implemented these, but someone may wish to in the future so */
/* I kept them around. */
/**************************************************************************/
/*
* "vendor" data permitted for Stanford boot clients.
*/
struct vend {
byte v_magic[4]; /* magic number */
longword v_flags; /* flags/opcodes, etc. */
byte v_unused[56]; /* currently unused */
};
#define VM_STANFORD "STAN" /* v_magic for Stanford */
/*#define VM_RFC1048 "\143\202\123\143" /* 94.11.20 */
/* v_flags values */
#define VF_PCBOOT 1 /* an IBMPC or Mac wants environment info */
#define VF_HELP 2 /* help me, I'm not registered */
#define TAG_BOOTFILE_SIZE 13 /* tag used by vend fields rfc 1048 */