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82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
#ifndef _GPXE_TFTP_H
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#define _GPXE_TFTP_H
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/** @file
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*
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* TFTP protocol
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*
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*/
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#include <stdint.h>
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#define TFTP_PORT 69 /**< Default TFTP server port */
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#define TFTP_DEFAULT_BLKSIZE 512 /**< Default TFTP data block size */
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#define TFTP_MAX_BLKSIZE 1432
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#define TFTP_RRQ 1 /**< Read request opcode */
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#define TFTP_WRQ 2 /**< Write request opcode */
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#define TFTP_DATA 3 /**< Data block opcode */
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#define TFTP_ACK 4 /**< Data block acknowledgement opcode */
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#define TFTP_ERROR 5 /**< Error opcode */
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#define TFTP_OACK 6 /**< Options acknowledgement opcode */
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#define TFTP_ERR_FILE_NOT_FOUND 1 /**< File not found */
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#define TFTP_ERR_ACCESS_DENIED 2 /**< Access violation */
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#define TFTP_ERR_DISK_FULL 3 /**< Disk full or allocation exceeded */
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#define TFTP_ERR_ILLEGAL_OP 4 /**< Illegal TFTP operation */
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#define TFTP_ERR_UNKNOWN_TID 5 /**< Unknown transfer ID */
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#define TFTP_ERR_FILE_EXISTS 6 /**< File already exists */
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#define TFTP_ERR_UNKNOWN_USER 7 /**< No such user */
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#define TFTP_ERR_BAD_OPTS 8 /**< Option negotiation failed */
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/** A TFTP read request (RRQ) packet */
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struct tftp_rrq {
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uint16_t opcode;
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char data[0];
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} __attribute__ (( packed ));
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/** A TFTP data (DATA) packet */
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struct tftp_data {
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uint16_t opcode;
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uint16_t block;
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uint8_t data[0];
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} __attribute__ (( packed ));
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/** A TFTP acknowledgement (ACK) packet */
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struct tftp_ack {
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uint16_t opcode;
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uint16_t block;
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} __attribute__ (( packed ));
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/** A TFTP error (ERROR) packet */
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struct tftp_error {
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uint16_t opcode;
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uint16_t errcode;
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char errmsg[0];
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} __attribute__ (( packed ));
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/** A TFTP options acknowledgement (OACK) packet */
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struct tftp_oack {
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uint16_t opcode;
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char data[0];
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} __attribute__ (( packed ));
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/** The common header of all TFTP packets */
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struct tftp_common {
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uint16_t opcode;
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} __attribute__ (( packed ));
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/** A union encapsulating all TFTP packet types */
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union tftp_any {
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struct tftp_common common;
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struct tftp_rrq rrq;
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struct tftp_data data;
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struct tftp_ack ack;
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struct tftp_error error;
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struct tftp_oack oack;
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};
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extern void tftp_set_request_blksize ( unsigned int blksize );
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#endif /* _GPXE_TFTP_H */
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