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gtp.h

gtp.h 633 B
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. #ifndef _GTP_H_
    3. 

  3. #define _GTP_H_
    4. 

  4. 

  5. /* General GTP protocol related definitions. */
    6. 

  6. 

  7. #define GTP0_PORT	3386
    8. 

  8. #define GTP1U_PORT	2152
    9. 

  9. 

  10. #define GTP_TPDU	255
    11. 

  11. 

  12. struct gtp0_header {	/* According to GSM TS 09.60. */
    13. 

  13. 	__u8	flags;
    14. 

  14. 	__u8	type;
    15. 

  15. 	__be16	length;
    16. 

  16. 	__be16	seq;
    17. 

  17. 	__be16	flow;
    18. 

  18. 	__u8	number;
    19. 

  19. 	__u8	spare[3];
    20. 

  20. 	__be64	tid;
    21. 

  21. } __attribute__ ((packed));
    22. 

  22. 

  23. struct gtp1_header {	/* According to 3GPP TS 29.060. */
    24. 

  24. 	__u8	flags;
    25. 

  25. 	__u8	type;
    26. 

  26. 	__be16	length;
    27. 

  27. 	__be32	tid;
    28. 

  28. } __attribute__ ((packed));
    29. 

  29. 

  30. #define GTP1_F_NPDU	0x01
    31. 

  31. #define GTP1_F_SEQ	0x02
    32. 

  32. #define GTP1_F_EXTHDR	0x04
    33. 

  33. #define GTP1_F_MASK	0x07
    34. 

  34. 

  35. #endif
    36. 

  36.