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#ifndef _GSMTAP_H
#define _GSMTAP_H
/* gsmtap header, pseudo-header in front of the actua GSM payload*/
#include <sys/types.h>
#define GSMTAP_VERSION 0x01
#define GSMTAP_TYPE_UM 0x01
#define GSMTAP_TYPE_ABIS 0x02
#define GSMTAP_TYPE_UM_BURST 0x03 /* raw burst bits */
#define GSMTAP_BURST_UNKNOWN 0x00
#define GSMTAP_BURST_FCCH 0x01
#define GSMTAP_BURST_PARTIAL_SCH 0x02
#define GSMTAP_BURST_SCH 0x03
#define GSMTAP_BURST_CTS_SCH 0x04
#define GSMTAP_BURST_COMPACT_SCH 0x05
#define GSMTAP_BURST_NORMAL 0x06
#define GSMTAP_BURST_DUMMY 0x07
#define GSMTAP_BURST_ACCESS 0x08
#define GSMTAP_BURST_NONE 0x09
#define GSMTAP_UDP_PORT 4729
struct gsmtap_hdr {
u_int8_t version; /* version, set to 0x01 currently */
u_int8_t hdr_len; /* length in number of 32bit words */
u_int8_t type; /* see GSMTAP_TYPE_* */
u_int8_t timeslot; /* timeslot (0..7 on Um) */
u_int16_t arfcn; /* ARFCN (frequency) */
u_int8_t noise_db; /* noise figure in dB */
u_int8_t signal_db; /* signal level in dB */
u_int32_t frame_number; /* GSM Frame Number (FN) */
u_int8_t burst_type; /* Type of burst, see above */
u_int8_t antenna_nr; /* Antenna Number */
u_int16_t res; /* reserved for future use (RFU) */
} __attribute__((packed));
/* PCAP related definitions */
#define TCPDUMP_MAGIC 0xa1b2c3d4
#ifndef LINKTYPE_GSMTAP
#define LINKTYPE_GSMTAP 2342
#endif
struct pcap_timeval {
int32_t tv_sec;
int32_t tv_usec;
};
struct pcap_sf_pkthdr {
struct pcap_timeval ts; /* time stamp */
u_int32_t caplen; /* lenght of portion present */
u_int32_t len; /* length of this packet */
};
#endif /* _GSMTAP_H */
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