/* tftp defines */

#define TFTP_SESSIONS_MAX 3

#define TFTP_SERVER	69

#define TFTP_RRQ    1

#define TFTP_WRQ    2

#define TFTP_DATA   3

#define TFTP_ACK    4

#define TFTP_ERROR  5

#define TFTP_OACK   6

#define TFTP_FILENAME_MAX 512

struct tftp_t {

  struct ip ip;

  struct udphdr udp;

  u_int16_t tp_op;

  union {

    struct {

      u_int16_t tp_block_nr;

      u_int8_t tp_buf[512];

    } tp_data;

    struct {

      u_int16_t tp_error_code;

      u_int8_t tp_msg[512];

    } tp_error;

    u_int8_t tp_buf[512 + 2];

  } x;

};

void tftp_input(struct mbuf *m);