1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _GTP_H_ 3*4882a593Smuzhiyun #define _GTP_H_ 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun /* General GTP protocol related definitions. */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #define GTP0_PORT 3386 8*4882a593Smuzhiyun #define GTP1U_PORT 2152 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #define GTP_TPDU 255 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun struct gtp0_header { /* According to GSM TS 09.60. */ 13*4882a593Smuzhiyun __u8 flags; 14*4882a593Smuzhiyun __u8 type; 15*4882a593Smuzhiyun __be16 length; 16*4882a593Smuzhiyun __be16 seq; 17*4882a593Smuzhiyun __be16 flow; 18*4882a593Smuzhiyun __u8 number; 19*4882a593Smuzhiyun __u8 spare[3]; 20*4882a593Smuzhiyun __be64 tid; 21*4882a593Smuzhiyun } __attribute__ ((packed)); 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun struct gtp1_header { /* According to 3GPP TS 29.060. */ 24*4882a593Smuzhiyun __u8 flags; 25*4882a593Smuzhiyun __u8 type; 26*4882a593Smuzhiyun __be16 length; 27*4882a593Smuzhiyun __be32 tid; 28*4882a593Smuzhiyun } __attribute__ ((packed)); 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #define GTP1_F_NPDU 0x01 31*4882a593Smuzhiyun #define GTP1_F_SEQ 0x02 32*4882a593Smuzhiyun #define GTP1_F_EXTHDR 0x04 33*4882a593Smuzhiyun #define GTP1_F_MASK 0x07 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun #endif 36