[linux.git] / include / net / gtp.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _GTP_H_
#define _GTP_H_

#include <linux/netdevice.h>
#include <linux/types.h>
#include <net/rtnetlink.h>

/* General GTP protocol related definitions. */

#define GTP0_PORT	3386
#define GTP1U_PORT	2152

/* GTP messages types */
#define GTP_ECHO_REQ	1	/* Echo Request */
#define GTP_ECHO_RSP	2	/* Echo Response */
#define GTP_TPDU	255

#define GTPIE_RECOVERY	14

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));

struct gtp1_header_long {	/* According to 3GPP TS 29.060. */
	__u8	flags;
	__u8	type;
	__be16	length;
	__be32	tid;
	__be16	seq;
	__u8	npdu;
	__u8	next;
} __packed;

/* GTP Information Element */
struct gtp_ie {
	__u8	tag;
	__u8	val;
} __packed;

struct gtp0_packet {
	struct gtp0_header gtp0_h;
	struct gtp_ie ie;
} __packed;

struct gtp1u_packet {
	struct gtp1_header_long gtp1u_h;
	struct gtp_ie ie;
} __packed;

struct gtp_pdu_session_info {	/* According to 3GPP TS 38.415. */
	u8	pdu_type;
	u8	qfi;
};

static inline bool netif_is_gtp(const struct net_device *dev)
{
	return dev->rtnl_link_ops &&
		!strcmp(dev->rtnl_link_ops->kind, "gtp");
}

#define GTP1_F_NPDU	0x01
#define GTP1_F_SEQ	0x02
#define GTP1_F_EXTHDR	0x04
#define GTP1_F_MASK	0x07

struct gtp_ext_hdr {
	__u8	len;
	__u8	data[];
};

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
459aa660	2	#ifndef _GTP_H_
9b8ac4f9	3	#define _GTP_H_
459aa660	4
949d6b40 JK	5	#include <linux/netdevice.h>
	6	#include <linux/types.h>
	7	#include <net/rtnetlink.h>
	8
459aa660 PN	9	/* General GTP protocol related definitions. */
	10
	11	#define GTP0_PORT 3386
	12	#define GTP1U_PORT 2152
	13
9af41cc3 WD	14	/* GTP messages types */
	15	#define GTP_ECHO_REQ 1 /* Echo Request */
	16	#define GTP_ECHO_RSP 2 /* Echo Response */
459aa660 PN	17	#define GTP_TPDU 255
459aa660 PN	18
9af41cc3 WD	19	#define GTPIE_RECOVERY 14
9af41cc3 WD	20
459aa660 PN	21	struct gtp0_header { /* According to GSM TS 09.60. */
	22	__u8 flags;
	23	__u8 type;
	24	__be16 length;
	25	__be16 seq;
	26	__be16 flow;
	27	__u8 number;
	28	__u8 spare[3];
	29	__be64 tid;
	30	} __attribute__ ((packed));
	31
	32	struct gtp1_header { /* According to 3GPP TS 29.060. */
	33	__u8 flags;
	34	__u8 type;
	35	__be16 length;
	36	__be32 tid;
	37	} __attribute__ ((packed));
	38
9af41cc3 WD	39	struct gtp1_header_long { /* According to 3GPP TS 29.060. */
	40	__u8 flags;
	41	__u8 type;
	42	__be16 length;
	43	__be32 tid;
	44	__be16 seq;
	45	__u8 npdu;
	46	__u8 next;
	47	} __packed;
	48
	49	/* GTP Information Element */
	50	struct gtp_ie {
	51	__u8 tag;
	52	__u8 val;
	53	} __packed;
	54
	55	struct gtp0_packet {
	56	struct gtp0_header gtp0_h;
	57	struct gtp_ie ie;
	58	} __packed;
	59
	60	struct gtp1u_packet {
	61	struct gtp1_header_long gtp1u_h;
	62	struct gtp_ie ie;
	63	} __packed;
	64
e3acda7a WD	65	struct gtp_pdu_session_info { /* According to 3GPP TS 38.415. */
	66	u8 pdu_type;
	67	u8 qfi;
	68	};
	69
81dd9849 WD	70	static inline bool netif_is_gtp(const struct net_device *dev)
	71	{
	72	return dev->rtnl_link_ops &&
	73	!strcmp(dev->rtnl_link_ops->kind, "gtp");
	74	}
	75
459aa660 PN	76	#define GTP1_F_NPDU 0x01
	77	#define GTP1_F_SEQ 0x02
	78	#define GTP1_F_EXTHDR 0x04
	79	#define GTP1_F_MASK 0x07
	80
b6fc0956 PNA	81	struct gtp_ext_hdr {
	82	__u8 len;
	83	__u8 data[];
	84	};
	85
459aa660	86	#endif