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      1 /* tftp defines */
      2 
      3 #define TFTP_SESSIONS_MAX 3
      4 
      5 #define TFTP_SERVER	69
      6 
      7 #define TFTP_RRQ    1
      8 #define TFTP_WRQ    2
      9 #define TFTP_DATA   3
     10 #define TFTP_ACK    4
     11 #define TFTP_ERROR  5
     12 #define TFTP_OACK   6
     13 
     14 #define TFTP_FILENAME_MAX 512
     15 
     16 struct tftp_t {
     17   struct ip ip;
     18   struct udphdr udp;
     19   u_int16_t tp_op;
     20   union {
     21     struct {
     22       u_int16_t tp_block_nr;
     23       u_int8_t tp_buf[512];
     24     } tp_data;
     25     struct {
     26       u_int16_t tp_error_code;
     27       u_int8_t tp_msg[512];
     28     } tp_error;
     29     u_int8_t tp_buf[512 + 2];
     30   } x;
     31 };
     32 
     33 void tftp_input(struct mbuf *m);
     34