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TOMOYO Linux Cross Reference
Linux/include/net/gtp.h

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  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
 35 

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