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