1 #ifndef _GPXE_TFTP_H 2 #define _GPXE_TFTP_H 3 4 /** @file 5 * 6 * TFTP protocol 7 * 8 */ 9 10 FILE_LICENCE ( GPL2_OR_LATER ); 11 12 #include <stdint.h> 13 14 #define TFTP_PORT 69 /**< Default TFTP server port */ 15 #define TFTP_DEFAULT_BLKSIZE 512 /**< Default TFTP data block size */ 16 #define TFTP_MAX_BLKSIZE 1432 17 18 #define TFTP_RRQ 1 /**< Read request opcode */ 19 #define TFTP_WRQ 2 /**< Write request opcode */ 20 #define TFTP_DATA 3 /**< Data block opcode */ 21 #define TFTP_ACK 4 /**< Data block acknowledgement opcode */ 22 #define TFTP_ERROR 5 /**< Error opcode */ 23 #define TFTP_OACK 6 /**< Options acknowledgement opcode */ 24 25 #define TFTP_ERR_FILE_NOT_FOUND 1 /**< File not found */ 26 #define TFTP_ERR_ACCESS_DENIED 2 /**< Access violation */ 27 #define TFTP_ERR_DISK_FULL 3 /**< Disk full or allocation exceeded */ 28 #define TFTP_ERR_ILLEGAL_OP 4 /**< Illegal TFTP operation */ 29 #define TFTP_ERR_UNKNOWN_TID 5 /**< Unknown transfer ID */ 30 #define TFTP_ERR_FILE_EXISTS 6 /**< File already exists */ 31 #define TFTP_ERR_UNKNOWN_USER 7 /**< No such user */ 32 #define TFTP_ERR_BAD_OPTS 8 /**< Option negotiation failed */ 33 34 #define MTFTP_PORT 1759 /**< Default MTFTP server port */ 35 36 /** A TFTP read request (RRQ) packet */ 37 struct tftp_rrq { 38 uint16_t opcode; 39 char data[0]; 40 } __attribute__ (( packed )); 41 42 /** A TFTP data (DATA) packet */ 43 struct tftp_data { 44 uint16_t opcode; 45 uint16_t block; 46 uint8_t data[0]; 47 } __attribute__ (( packed )); 48 49 /** A TFTP acknowledgement (ACK) packet */ 50 struct tftp_ack { 51 uint16_t opcode; 52 uint16_t block; 53 } __attribute__ (( packed )); 54 55 /** A TFTP error (ERROR) packet */ 56 struct tftp_error { 57 uint16_t opcode; 58 uint16_t errcode; 59 char errmsg[0]; 60 } __attribute__ (( packed )); 61 62 /** A TFTP options acknowledgement (OACK) packet */ 63 struct tftp_oack { 64 uint16_t opcode; 65 char data[0]; 66 } __attribute__ (( packed )); 67 68 /** The common header of all TFTP packets */ 69 struct tftp_common { 70 uint16_t opcode; 71 } __attribute__ (( packed )); 72 73 /** A union encapsulating all TFTP packet types */ 74 union tftp_any { 75 struct tftp_common common; 76 struct tftp_rrq rrq; 77 struct tftp_data data; 78 struct tftp_ack ack; 79 struct tftp_error error; 80 struct tftp_oack oack; 81 }; 82 83 extern void tftp_set_request_blksize ( unsigned int blksize ); 84 85 #endif /* _GPXE_TFTP_H */ 86
