44 lines
746 B
C
44 lines
746 B
C
#ifndef _GTP_H_
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#define _GTP_H
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/* Resides in include/uapi/linux/udp.h */
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#ifndef UDP_ENCAP_GTP0
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#define UDP_ENCAP_GTP0 4
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#endif
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#ifndef UDP_ENCAP_GTP1U
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#define UDP_ENCAP_GTP1U 5
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#endif
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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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