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1 | /* SPDX-License-Identifier: GPL-2.0 */ | |
2 | #ifndef _GTP_H_ | |
3 | #define _GTP_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 | __u8 flags; | |
14 | __u8 type; | |
15 | __be16 length; | |
16 | __be16 seq; | |
17 | __be16 flow; | |
18 | __u8 number; | |
19 | __u8 spare[3]; | |
20 | __be64 tid; | |
21 | } __attribute__ ((packed)); | |
22 | ||
23 | struct gtp1_header { /* According to 3GPP TS 29.060. */ | |
24 | __u8 flags; | |
25 | __u8 type; | |
26 | __be16 length; | |
27 | __be32 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 | |
34 | ||
35 | #endif |