From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- include/net/gtp.h | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 include/net/gtp.h (limited to 'include/net/gtp.h') diff --git a/include/net/gtp.h b/include/net/gtp.h new file mode 100644 index 0000000000..2a503f035d --- /dev/null +++ b/include/net/gtp.h @@ -0,0 +1,81 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _GTP_H_ +#define _GTP_H_ + +#include +#include +#include + +/* 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 + +#endif -- cgit v1.2.3