| Harald Welte | f736559 | 2020-04-15 21:48:45 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #pragma once |
| 3 | #include <stdint.h> |
| 4 | |
| 5 | /* General GTP protocol related definitions. */ |
| 6 | |
| 7 | #define GTP0_PORT 3386 |
| 8 | #define GTP1U_PORT 2152 |
| 9 | |
| 10 | #define GTP_TPDU 255 |
| 11 | |
| 12 | struct gtp0_header { /* According to GSM TS 09.60. */ |
| 13 | uint8_t flags; |
| 14 | uint8_t type; |
| 15 | uint16_t length; |
| 16 | uint16_t seq; |
| 17 | uint16_t flow; |
| 18 | uint8_t number; |
| 19 | uint8_t spare[3]; |
| 20 | uint64_t tid; |
| 21 | } __attribute__ ((packed)); |
| 22 | |
| 23 | struct gtp1_header { /* According to 3GPP TS 29.060. */ |
| 24 | uint8_t flags; |
| 25 | uint8_t type; |
| 26 | uint16_t length; |
| 27 | uint32_t tid; |
| 28 | } __attribute__ ((packed)); |
| 29 | |
| 30 | #define GTP1_F_NPDU 0x01 |
| 31 | #define GTP1_F_SEQ 0x02 |
| 32 | #define GTP1_F_EXTHDR 0x04 |
| 33 | #define GTP1_F_MASK 0x07 |