/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _GTP_H_ #define _GTP_H_ /* General GTP protocol related definitions. */ #define GTP0_PORT 3386 #define GTP1U_PORT 2152 #define GTP_TPDU 255 struct gtp0_header { /* According to GSM TS 09.60. */ __u8 flags; __u8 type; __be16 length; __be16 seq; __be16 flow; __u8 number; __u8 spare[3]; __be64 tid; } __attribute__ ((packed)); struct gtp1_header { /* According to 3GPP TS 29.060. */ __u8 flags; __u8 type; __be16 length; __be32 tid; } __attribute__ ((packed)); #define GTP1_F_NPDU 0x01 #define GTP1_F_SEQ 0x02 #define GTP1_F_EXTHDR 0x04 #define GTP1_F_MASK 0x07 #endif