include/net/gtp.h

   1 #ifndef _GTP_H_
   2 #define _GTP_H_
   3
   4 /* General GTP protocol related definitions. */
   5
   6 #define GTP0_PORT       3386
   7 #define GTP1U_PORT      2152
   8
   9 #define GTP_TPDU        255
  10
  11 struct gtp0_header {    /* According to GSM TS 09.60. */
  12         __u8    flags;
  13         __u8    type;
  14         __be16  length;
  15         __be16  seq;
  16         __be16  flow;
  17         __u8    number;
  18         __u8    spare[3];
  19         __be64  tid;
  20 } __attribute__ ((packed));
  21
  22 struct gtp1_header {    /* According to 3GPP TS 29.060. */
  23         __u8    flags;
  24         __u8    type;
  25         __be16  length;
  26         __be32  tid;
  27 } __attribute__ ((packed));
  28
  29 #define GTP1_F_NPDU     0x01
  30 #define GTP1_F_SEQ      0x02
  31 #define GTP1_F_EXTHDR   0x04
  32 #define GTP1_F_MASK     0x07
  33
  34 #endif