diff options
| author | Pablo Neira Ayuso <pablo@gnumonks.org> | 2011-03-22 16:36:13 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2011-03-23 18:09:28 +0100 |
| commit | 834193484439acd6056a891e9b2df5992a370088 (patch) | |
| tree | e31e73e1364119617416273610f7b851c89d25c4 /include/osmocom/core/gsmtap.h | |
| parent | fba495e5f6084800c076e0ecae990ed9e6483530 (diff) | |
include: reorganize headers file to include/osmocom/[gsm|core]
This patch moves all GSM-specific definitions to include/osmocom/gsm.
Moreover, the headers in include/osmocore/ have been moved to
include/osmocom/core.
This has been proposed by Harald Welte and Sylvain Munaunt.
Tested with `make distcheck'.
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
Diffstat (limited to 'include/osmocom/core/gsmtap.h')
| -rw-r--r-- | include/osmocom/core/gsmtap.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/include/osmocom/core/gsmtap.h b/include/osmocom/core/gsmtap.h new file mode 100644 index 00000000..236b25ac --- /dev/null +++ b/include/osmocom/core/gsmtap.h @@ -0,0 +1,89 @@ +#ifndef _GSMTAP_H +#define _GSMTAP_H + +/* gsmtap header, pseudo-header in front of the actua GSM payload */ + +/* GSMTAP is a generic header format for GSM protocol captures, + * it uses the IANA-assigned UDP port number 4729 and carries + * payload in various formats of GSM interfaces such as Um MAC + * blocks or Um bursts. + * + * Example programs generating GSMTAP data are airprobe + * (http://airprobe.org/) or OsmocomBB (http://bb.osmocom.org/) + */ + +#include <stdint.h> + +#define GSMTAP_VERSION 0x02 + +#define GSMTAP_TYPE_UM 0x01 +#define GSMTAP_TYPE_ABIS 0x02 +#define GSMTAP_TYPE_UM_BURST 0x03 /* raw burst bits */ +#define GSMTAP_TYPE_SIM 0x04 +#define GSMTAP_TYPE_TETRA_I1 0x05 /* tetra air interface */ +#define GSMTAP_TYPE_TETRA_I1_BURST 0x06 /* tetra air interface */ + +/* sub-types for TYPE_UM_BURST */ +#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 + +/* sub-types for TYPE_UM */ +#define GSMTAP_CHANNEL_UNKNOWN 0x00 +#define GSMTAP_CHANNEL_BCCH 0x01 +#define GSMTAP_CHANNEL_CCCH 0x02 +#define GSMTAP_CHANNEL_RACH 0x03 +#define GSMTAP_CHANNEL_AGCH 0x04 +#define GSMTAP_CHANNEL_PCH 0x05 +#define GSMTAP_CHANNEL_SDCCH 0x06 +#define GSMTAP_CHANNEL_SDCCH4 0x07 +#define GSMTAP_CHANNEL_SDCCH8 0x08 +#define GSMTAP_CHANNEL_TCH_F 0x09 +#define GSMTAP_CHANNEL_TCH_H 0x0a +#define GSMTAP_CHANNEL_ACCH 0x80 + +/* sub-types for TYPE_TETRA_AIR */ +#define GSMTAP_TETRA_BSCH 0x01 +#define GSMTAP_TETRA_AACH 0x02 +#define GSMTAP_TETRA_SCH_HU 0x03 +#define GSMTAP_TETRA_SCH_HD 0x04 +#define GSMTAP_TETRA_SCH_F 0x05 +#define GSMTAP_TETRA_BNCH 0x06 +#define GSMTAP_TETRA_STCH 0x07 +#define GSMTAP_TETRA_TCH_F 0x08 + +/* flags for the ARFCN */ +#define GSMTAP_ARFCN_F_PCS 0x8000 +#define GSMTAP_ARFCN_F_UPLINK 0x4000 +#define GSMTAP_ARFCN_MASK 0x3fff + +/* IANA-assigned well-known UDP port for GSMTAP messages */ +#define GSMTAP_UDP_PORT 4729 + +struct gsmtap_hdr { + uint8_t version; /* version, set to 0x01 currently */ + uint8_t hdr_len; /* length in number of 32bit words */ + uint8_t type; /* see GSMTAP_TYPE_* */ + uint8_t timeslot; /* timeslot (0..7 on Um) */ + + uint16_t arfcn; /* ARFCN (frequency) */ + int8_t signal_dbm; /* signal level in dBm */ + int8_t snr_db; /* signal/noise ratio in dB */ + + uint32_t frame_number; /* GSM Frame Number (FN) */ + + uint8_t sub_type; /* Type of burst/channel, see above */ + uint8_t antenna_nr; /* Antenna Number */ + uint8_t sub_slot; /* sub-slot within timeslot */ + uint8_t res; /* reserved for future use (RFU) */ + +} __attribute__((packed)); + +#endif /* _GSMTAP_H */ |