slirp/src/tftp.h

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2 /* tftp defines */
   3
   4 #ifndef SLIRP_TFTP_H
   5 #define SLIRP_TFTP_H
   6
   7 #define TFTP_SESSIONS_MAX 20
   8
   9 #define TFTP_SERVER     69
  10
  11 #define TFTP_RRQ    1
  12 #define TFTP_WRQ    2
  13 #define TFTP_DATA   3
  14 #define TFTP_ACK    4
  15 #define TFTP_ERROR  5
  16 #define TFTP_OACK   6
  17
  18 #define TFTP_FILENAME_MAX 512
  19 #define TFTP_BLOCKSIZE_MAX 1428
  20
  21 struct tftp_t {
  22   struct udphdr udp;
  23   uint16_t tp_op;
  24   union {
  25     struct {
  26       uint16_t tp_block_nr;
  27       uint8_t tp_buf[TFTP_BLOCKSIZE_MAX];
  28     } tp_data;
  29     struct {
  30       uint16_t tp_error_code;
  31       uint8_t tp_msg[TFTP_BLOCKSIZE_MAX];
  32     } tp_error;
  33     char tp_buf[TFTP_BLOCKSIZE_MAX + 2];
  34   } x;
  35 } __attribute__((packed));
  36
  37 struct tftp_session {
  38     Slirp *slirp;
  39     char *filename;
  40     int fd;
  41     uint16_t block_size;
  42
  43     struct sockaddr_storage client_addr;
  44     uint16_t client_port;
  45     uint32_t block_nr;
  46
  47     int timestamp;
  48 };
  49
  50 void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m);
  51
  52 #endif