Remove build dependency on legacy OpenBSC

* copy-paste gsm_data_shared.* from OpenBSC master
* remove corresponding configure check and option
* remove .deb dependency

Actual refactoring with removal of unnecessary structures/parts, moving
common OpenBSC/OsmoBSC parts into libraries etc. are left for further
patches.

Current patch will make coexistence with *BSC easier and will simplify
our build infrastructure.

Change-Id: I9f004fb5c4c1db29d4792dfd281d388c7063da13
Related: OS#1923

1 files changed, 999 insertions, 0 deletions

diff --git a/include/osmo-bts/gsm_data_shared.h b/include/osmo-bts/gsm_data_shared.h
new file mode 100644
index 00000000..c19b1255
--- /dev/null
+++ b/include/osmo-bts/gsm_data_shared.h
@@ -0,0 +1,999 @@
+#ifndef _GSM_DATA_SHAREDH
+#define _GSM_DATA_SHAREDH
+
+#include <regex.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <osmocom/core/timer.h>
+#include <osmocom/core/bitvec.h>
+#include <osmocom/core/statistics.h>
+#include <osmocom/core/utils.h>
+#include <osmocom/gsm/gsm_utils.h>
+#include <osmocom/gsm/tlv.h>
+#include <osmocom/gsm/rxlev_stat.h>
+#include <osmocom/gsm/sysinfo.h>
+#include <osmocom/gsm/meas_rep.h>
+#include <osmocom/gsm/protocol/gsm_04_08.h>
+#include <osmocom/gsm/protocol/gsm_08_58.h>
+#include <osmocom/gsm/protocol/gsm_12_21.h>
+
+#include <osmocom/abis/e1_input.h>
+
+#ifndef ROLE_BSC
+#include <osmocom/gsm/lapdm.h>
+#endif
+
+/* 16 is the max. number of SI2quater messages according to 3GPP TS 44.018 Table 10.5.2.33b.1:
+   4-bit index is used (2#1111 = 10#15) */
+#define SI2Q_MAX_NUM 16
+/* length in bits (for single SI2quater message) */
+#define SI2Q_MAX_LEN 160
+#define SI2Q_MIN_LEN 18
+
+struct osmo_bsc_data;
+
+struct osmo_bsc_sccp_con;
+struct gsm_sms_queue;
+
+/* RRLP mode of operation */
+enum rrlp_mode {
+	RRLP_MODE_NONE,
+	RRLP_MODE_MS_BASED,
+	RRLP_MODE_MS_PREF,
+	RRLP_MODE_ASS_PREF,
+};
+
+/* Channel Request reason */
+enum gsm_chreq_reason_t {
+	GSM_CHREQ_REASON_EMERG,
+	GSM_CHREQ_REASON_PAG,
+	GSM_CHREQ_REASON_CALL,
+	GSM_CHREQ_REASON_LOCATION_UPD,
+	GSM_CHREQ_REASON_OTHER,
+	GSM_CHREQ_REASON_PDCH,
+};
+
+/* lchans 0..3 are SDCCH in combined channel configuration,
+   use 4 as magic number for BCCH hack - see osmo-bts-../oml.c:opstart_compl() */
+#define CCCH_LCHAN 4
+
+#define TRX_NR_TS	8
+#define TS_MAX_LCHAN	8
+
+#define HARDCODED_ARFCN 123
+#define HARDCODED_BSIC	0x3f	/* NCC = 7 / BCC = 7 */
+
+/* for multi-drop config */
+#define HARDCODED_BTS0_TS	1
+#define HARDCODED_BTS1_TS	6
+#define HARDCODED_BTS2_TS	11
+
+#define MAX_VERSION_LENGTH 64
+
+#define MAX_BTS_FEATURES 128
+
+enum gsm_hooks {
+	GSM_HOOK_NM_SWLOAD,
+	GSM_HOOK_RR_PAGING,
+	GSM_HOOK_RR_SECURITY,
+};
+
+enum gsm_paging_event {
+	GSM_PAGING_SUCCEEDED,
+	GSM_PAGING_EXPIRED,
+	GSM_PAGING_OOM,
+	GSM_PAGING_BUSY,
+};
+
+enum bts_gprs_mode {
+	BTS_GPRS_NONE = 0,
+	BTS_GPRS_GPRS = 1,
+	BTS_GPRS_EGPRS = 2,
+};
+
+struct gsm_lchan;
+struct gsm_subscriber;
+struct gsm_mncc;
+struct osmo_rtp_socket;
+struct rtp_socket;
+struct bsc_api;
+
+/* Network Management State */
+struct gsm_nm_state {
+	uint8_t operational;
+	uint8_t administrative;
+	uint8_t availability;
+};
+
+struct gsm_abis_mo {
+	uint8_t obj_class;
+	uint8_t procedure_pending;
+	struct abis_om_obj_inst obj_inst;
+	const char *name;
+	struct gsm_nm_state nm_state;
+	struct tlv_parsed *nm_attr;
+	struct gsm_bts *bts;
+};
+
+/* Ericsson OM2000 Managed Object */
+struct abis_om2k_mo {
+	uint8_t class;
+	uint8_t bts;
+	uint8_t assoc_so;
+	uint8_t inst;
+} __attribute__ ((packed));
+
+struct om2k_mo {
+	struct abis_om2k_mo addr;
+	struct osmo_fsm_inst *fsm;
+};
+
+#define MAX_A5_KEY_LEN	(128/8)
+#define A38_XOR_MIN_KEY_LEN	12
+#define A38_XOR_MAX_KEY_LEN	16
+#define A38_COMP128_KEY_LEN	16
+#define RSL_ENC_ALG_A5(x)	(x+1)
+#define MAX_EARFCN_LIST 32
+
+/* is the data link established? who established it? */
+#define LCHAN_SAPI_UNUSED	0
+#define LCHAN_SAPI_MS		1
+#define LCHAN_SAPI_NET		2
+#define LCHAN_SAPI_REL		3
+
+/* state of a logical channel */
+enum gsm_lchan_state {
+	LCHAN_S_NONE,		/* channel is not active */
+	LCHAN_S_ACT_REQ,	/* channel activation requested */
+	LCHAN_S_ACTIVE,		/* channel is active and operational */
+	LCHAN_S_REL_REQ,	/* channel release has been requested */
+	LCHAN_S_REL_ERR,	/* channel is in an error state */
+	LCHAN_S_BROKEN,		/* channel is somehow unusable */
+	LCHAN_S_INACTIVE,	/* channel is set inactive */
+};
+
+/* BTS ONLY */
+#define MAX_NUM_UL_MEAS	104
+#define LC_UL_M_F_L1_VALID	(1 << 0)
+#define LC_UL_M_F_RES_VALID	(1 << 1)
+
+struct bts_ul_meas {
+	/* BER in units of 0.01%: 10.000 == 100% ber, 0 == 0% ber */
+	uint16_t ber10k;
+	/* timing advance offset (in quarter bits) */
+	int16_t ta_offs_qbits;
+	/* C/I ratio in dB */
+	float c_i;
+	/* flags */
+	uint8_t is_sub:1;
+	/* RSSI in dBm * -1 */
+	uint8_t inv_rssi;
+};
+
+struct bts_codec_conf {
+	uint8_t hr;
+	uint8_t efr;
+	uint8_t amr;
+};
+
+struct amr_mode {
+	uint8_t mode;
+	uint8_t threshold;
+	uint8_t hysteresis;
+};
+
+struct amr_multirate_conf {
+	uint8_t gsm48_ie[2];
+	struct amr_mode ms_mode[4];
+	struct amr_mode bts_mode[4];
+	uint8_t num_modes;
+};
+/* /BTS ONLY */
+
+enum lchan_csd_mode {
+	LCHAN_CSD_M_NT,
+	LCHAN_CSD_M_T_1200_75,
+	LCHAN_CSD_M_T_600,
+	LCHAN_CSD_M_T_1200,
+	LCHAN_CSD_M_T_2400,
+	LCHAN_CSD_M_T_9600,
+	LCHAN_CSD_M_T_14400,
+	LCHAN_CSD_M_T_29000,
+	LCHAN_CSD_M_T_32000,
+};
+
+/* State of the SAPIs in the lchan */
+enum lchan_sapi_state {
+	LCHAN_SAPI_S_NONE,
+	LCHAN_SAPI_S_REQ,
+	LCHAN_SAPI_S_ASSIGNED,
+	LCHAN_SAPI_S_REL,
+	LCHAN_SAPI_S_ERROR,
+};
+
+struct gsm_lchan {
+	/* The TS that we're part of */
+	struct gsm_bts_trx_ts *ts;
+	/* The logical subslot number in the TS */
+	uint8_t nr;
+	/* The logical channel type */
+	enum gsm_chan_t type;
+	/* RSL channel mode */
+	enum rsl_cmod_spd rsl_cmode;
+	/* If TCH, traffic channel mode */
+	enum gsm48_chan_mode tch_mode;
+	enum lchan_csd_mode csd_mode;
+	/* State */
+	enum gsm_lchan_state state;
+	const char *broken_reason;
+	/* Power levels for MS and BTS */
+	uint8_t bs_power;
+	uint8_t ms_power;
+	/* Encryption information */
+	struct {
+		uint8_t alg_id;
+		uint8_t key_len;
+		uint8_t key[MAX_A5_KEY_LEN];
+	} encr;
+
+	/* AMR bits */
+	uint8_t mr_ms_lv[7];
+	uint8_t mr_bts_lv[7];
+
+	/* Established data link layer services */
+	uint8_t sapis[8];
+	int sacch_deact;
+
+	struct {
+		uint32_t bound_ip;
+		uint32_t connect_ip;
+		uint16_t bound_port;
+		uint16_t connect_port;
+		uint16_t conn_id;
+		uint8_t rtp_payload;
+		uint8_t rtp_payload2;
+		uint8_t speech_mode;
+#ifdef ROLE_BSC
+		struct rtp_socket *rtp_socket;
+#else
+		struct osmo_rtp_socket *rtp_socket;
+#endif
+	} abis_ip;
+
+	uint8_t rqd_ta;
+
+	char *name;
+
+#ifdef ROLE_BSC
+	struct osmo_timer_list T3101;
+	struct osmo_timer_list T3109;
+	struct osmo_timer_list T3111;
+	struct osmo_timer_list error_timer;
+	struct osmo_timer_list act_timer;
+	struct osmo_timer_list rel_work;
+	uint8_t error_cause;
+
+	/* table of neighbor cell measurements */
+	struct neigh_meas_proc neigh_meas[MAX_NEIGH_MEAS];
+
+	/* cache of last measurement reports on this lchan */
+	struct gsm_meas_rep meas_rep[6];
+	int meas_rep_idx;
+
+	/* GSM Random Access data */
+	struct gsm48_req_ref *rqd_ref;
+
+	struct gsm_subscriber_connection *conn;
+
+	struct {
+		/* channel activation type and handover ref */
+		uint8_t act_type;
+		uint8_t ho_ref;
+		struct gsm48_req_ref *rqd_ref;
+		uint8_t rqd_ta;
+	} dyn;
+#else
+	/* Number of different GsmL1_Sapi_t used in osmo_bts_sysmo is 23.
+	 * Currently we don't share these headers so this is a magic number. */
+	struct llist_head sapi_cmds;
+	uint8_t sapis_dl[23];
+	uint8_t sapis_ul[23];
+	struct lapdm_channel lapdm_ch;
+	struct llist_head dl_tch_queue;
+	struct {
+		/* bitmask of all SI that are present/valid in si_buf */
+		uint32_t valid;
+		uint32_t last;
+		/* buffers where we put the pre-computed SI:
+		   SI2Q_MAX_NUM is the max number of SI2quater messages (see 3GPP TS 44.018) */
+		sysinfo_buf_t buf[_MAX_SYSINFO_TYPE][SI2Q_MAX_NUM];
+	} si;
+	struct {
+		uint8_t flags;
+		/* RSL measurment result number, 0 at lchan_act */
+		uint8_t res_nr;
+		/* current Tx power level of the BTS */
+		uint8_t bts_tx_pwr;
+		/* number of measurements stored in array below */
+		uint8_t num_ul_meas;
+		struct bts_ul_meas uplink[MAX_NUM_UL_MEAS];
+		/* last L1 header from the MS */
+		uint8_t l1_info[2];
+		struct gsm_meas_rep_unidir ul_res;
+	} meas;
+	struct {
+		struct amr_multirate_conf amr_mr;
+		struct {
+			struct osmo_fsm_inst *dl_amr_fsm;
+			/* TCH cache */
+			uint8_t cache[20];
+			/* FACCH cache */
+			uint8_t facch[GSM_MACBLOCK_LEN];
+			uint8_t len;
+			uint32_t fn;
+			bool is_update;
+			/* set for each SID frame to detect talkspurt for codecs
+			   without explicit ONSET event */
+			bool ul_sid;
+			/* indicates if DTXd was active during DL measurement
+			   period */
+			bool dl_active;
+		} dtx;
+		uint8_t last_cmr;
+		uint32_t last_fn;
+	} tch;
+
+	/* 3GPP TS 48.058 § 9.3.37: [0; 255] ok, -1 means invalid*/
+	int16_t ms_t_offs;
+	/* 3GPP TS 45.010 § 1.2 round trip propagation delay (in symbols) or -1 */
+	int16_t p_offs;
+
+	/* BTS-side ciphering state (rx only, bi-directional, ...) */
+	uint8_t ciph_state;
+	uint8_t ciph_ns;
+	uint8_t loopback;
+	struct {
+		uint8_t active;
+		uint8_t ref;
+		/* T3105: PHYS INF retransmission */
+		struct osmo_timer_list t3105;
+		/* counts up to Ny1 */
+		unsigned int phys_info_count;
+	} ho;
+	/* S counter for link loss */
+	int s;
+	/* Kind of the release/activation. E.g. RSL or PCU */
+	int rel_act_kind;
+	/* RTP header Marker bit to indicate beginning of speech after pause  */
+	bool rtp_tx_marker;
+	/* power handling */
+	struct {
+		uint8_t current;
+		uint8_t fixed;
+	} ms_power_ctrl;
+
+	struct msgb *pending_rel_ind_msg;
+#endif
+};
+
+enum {
+	TS_F_PDCH_ACTIVE =		0x1000,
+	TS_F_PDCH_ACT_PENDING =		0x2000,
+	TS_F_PDCH_DEACT_PENDING =	0x4000,
+	TS_F_PDCH_PENDING_MASK =	0x6000 /*<
+			TS_F_PDCH_ACT_PENDING | TS_F_PDCH_DEACT_PENDING */
+} gsm_bts_trx_ts_flags;
+
+/* One Timeslot in a TRX */
+struct gsm_bts_trx_ts {
+	struct gsm_bts_trx *trx;
+	/* number of this timeslot at the TRX */
+	uint8_t nr;
+
+	enum gsm_phys_chan_config pchan;
+
+	struct {
+		enum gsm_phys_chan_config pchan_is;
+		enum gsm_phys_chan_config pchan_want;
+		struct msgb *pending_chan_activ;
+	} dyn;
+
+	unsigned int flags;
+	struct gsm_abis_mo mo;
+	struct tlv_parsed nm_attr;
+	uint8_t nm_chan_comb;
+	int tsc;		/* -1 == use BTS TSC */
+
+	struct {
+		/* Parameters below are configured by VTY */
+		int enabled;
+		uint8_t maio;
+		uint8_t hsn;
+		struct bitvec arfcns;
+		uint8_t arfcns_data[1024/8];
+		/* This is the pre-computed MA for channel assignments */
+		struct bitvec ma;
+		uint8_t ma_len;	/* part of ma_data that is used */
+		uint8_t ma_data[8];	/* 10.5.2.21: max 8 bytes value part */
+	} hopping;
+
+	/* To which E1 subslot are we connected */
+	struct gsm_e1_subslot e1_link;
+
+	union {
+		struct {
+			struct om2k_mo om2k_mo;
+		} rbs2000;
+	};
+
+	struct gsm_lchan lchan[TS_MAX_LCHAN];
+};
+
+/* One TRX in a BTS */
+struct gsm_bts_trx {
+	/* list header in bts->trx_list */
+	struct llist_head list;
+
+	struct gsm_bts *bts;
+	/* number of this TRX in the BTS */
+	uint8_t nr;
+	/* human readable name / description */
+	char *description;
+	/* how do we talk RSL with this TRX? */
+	struct gsm_e1_subslot rsl_e1_link;
+	uint8_t rsl_tei;
+	struct e1inp_sign_link *rsl_link;
+
+	/* Some BTS (specifically Ericsson RBS) have a per-TRX OML Link */
+	struct e1inp_sign_link *oml_link;
+
+	struct gsm_abis_mo mo;
+	struct tlv_parsed nm_attr;
+	struct {
+		struct gsm_abis_mo mo;
+	} bb_transc;
+
+	uint16_t arfcn;
+	int nominal_power;		/* in dBm */
+	unsigned int max_power_red;	/* in actual dB */
+
+#ifndef ROLE_BSC
+	struct trx_power_params power_params;
+	int ms_power_control;
+
+	struct {
+		void *l1h;
+	} role_bts;
+#endif
+
+	union {
+		struct {
+			struct {
+				struct gsm_abis_mo mo;
+			} bbsig;
+			struct {
+				struct gsm_abis_mo mo;
+			} pa;
+		} bs11;
+		struct {
+			unsigned int test_state;
+			uint8_t test_nr;
+			struct rxlev_stats rxlev_stat;
+		} ipaccess;
+		struct {
+			struct {
+				struct om2k_mo om2k_mo;
+			} trxc;
+			struct {
+				struct om2k_mo om2k_mo;
+			} rx;
+			struct {
+				struct om2k_mo om2k_mo;
+			} tx;
+		} rbs2000;
+	};
+	struct gsm_bts_trx_ts ts[TRX_NR_TS];
+};
+
+#define GSM_BTS_SI2Q(bts, i)   (struct gsm48_system_information_type_2quater *)((bts)->si_buf[SYSINFO_TYPE_2quater][i])
+#define GSM_BTS_HAS_SI(bts, i) ((bts)->si_valid & (1 << i))
+#define GSM_BTS_SI(bts, i)     (void *)((bts)->si_buf[i][0])
+#define GSM_LCHAN_SI(lchan, i) (void *)((lchan)->si.buf[i][0])
+
+enum gsm_bts_type {
+	GSM_BTS_TYPE_UNKNOWN,
+	GSM_BTS_TYPE_BS11,
+	GSM_BTS_TYPE_NANOBTS,
+	GSM_BTS_TYPE_RBS2000,
+	GSM_BTS_TYPE_NOKIA_SITE,
+	GSM_BTS_TYPE_OSMOBTS,
+	_NUM_GSM_BTS_TYPE
+};
+
+enum gsm_bts_type_variant {
+	BTS_UNKNOWN,
+	BTS_OSMO_LITECELL15,
+	BTS_OSMO_OCTPHY,
+	BTS_OSMO_SYSMO,
+	BTS_OSMO_TRX,
+	_NUM_BTS_VARIANT
+};
+
+/* Used by OML layer for BTS Attribute reporting */
+enum bts_attribute {
+	BTS_TYPE_VARIANT,
+	BTS_SUB_MODEL,
+	TRX_PHY_VERSION,
+};
+
+struct vty;
+
+struct gsm_bts_model {
+	struct llist_head list;
+
+	enum gsm_bts_type type;
+	enum gsm_bts_type_variant variant;
+	const char *name;
+
+	bool started;
+	int (*start)(struct gsm_network *net);
+	int (*oml_rcvmsg)(struct msgb *msg);
+
+	void (*e1line_bind_ops)(struct e1inp_line *line);
+
+	void (*config_write_bts)(struct vty *vty, struct gsm_bts *bts);
+	void (*config_write_trx)(struct vty *vty, struct gsm_bts_trx *trx);
+	void (*config_write_ts)(struct vty *vty, struct gsm_bts_trx_ts *ts);
+
+	struct tlv_definition nm_att_tlvdef;
+
+	/* features of a given BTS model set via gsm_bts_model_register() locally */
+	struct bitvec features;
+	uint8_t _features_data[MAX_BTS_FEATURES/8];
+};
+
+/* N. B: always add new features to the end of the list (right before _NUM_BTS_FEAT) to avoid breaking compatibility
+   with BTS compiled against earlier version of this header */
+enum gsm_bts_features {
+	BTS_FEAT_HSCSD,
+	BTS_FEAT_GPRS,
+	BTS_FEAT_EGPRS,
+	BTS_FEAT_ECSD,
+	BTS_FEAT_HOPPING,
+	BTS_FEAT_MULTI_TSC,
+	BTS_FEAT_OML_ALERTS,
+	BTS_FEAT_AGCH_PCH_PROP,
+	BTS_FEAT_CBCH,
+	_NUM_BTS_FEAT
+};
+
+extern const struct value_string gsm_bts_features_descs[];
+
+/*
+ * This keeps track of the paging status of one BTS. It
+ * includes a number of pending requests, a back pointer
+ * to the gsm_bts, a timer and some more state.
+ */
+struct gsm_bts_paging_state {
+	/* pending requests */
+	struct llist_head pending_requests;
+	struct gsm_bts *bts;
+
+	struct osmo_timer_list work_timer;
+	struct osmo_timer_list credit_timer;
+
+	/* free chans needed */
+	int free_chans_need;
+
+	/* load */
+	uint16_t available_slots;
+};
+
+struct gsm_envabtse {
+	struct gsm_abis_mo mo;
+};
+
+struct gsm_bts_gprs_nsvc {
+	struct gsm_bts *bts;
+	/* data read via VTY config file, to configure the BTS
+	 * via OML from BSC */
+	int id;
+	uint16_t nsvci;
+	uint16_t local_port;	/* on the BTS */
+	uint16_t remote_port;	/* on the SGSN */
+	uint32_t remote_ip;	/* on the SGSN */
+
+	struct gsm_abis_mo mo;
+};
+
+enum gprs_rlc_par {
+	RLC_T3142,
+	RLC_T3169,
+	RLC_T3191,
+	RLC_T3193,
+	RLC_T3195,
+	RLC_N3101,
+	RLC_N3103,
+	RLC_N3105,
+	CV_COUNTDOWN,
+	T_DL_TBF_EXT,	/* ms */
+	T_UL_TBF_EXT,	/* ms */
+	_NUM_RLC_PAR
+};
+
+enum gprs_cs {
+	GPRS_CS1,
+	GPRS_CS2,
+	GPRS_CS3,
+	GPRS_CS4,
+	GPRS_MCS1,
+	GPRS_MCS2,
+	GPRS_MCS3,
+	GPRS_MCS4,
+	GPRS_MCS5,
+	GPRS_MCS6,
+	GPRS_MCS7,
+	GPRS_MCS8,
+	GPRS_MCS9,
+	_NUM_GRPS_CS
+};
+
+struct gprs_rlc_cfg {
+	uint16_t parameter[_NUM_RLC_PAR];
+	struct {
+		uint16_t repeat_time; /* ms */
+		uint8_t repeat_count;
+	} paging;
+	uint32_t cs_mask; /* bitmask of gprs_cs */
+	uint8_t initial_cs;
+	uint8_t initial_mcs;
+};
+
+
+enum neigh_list_manual_mode {
+	NL_MODE_AUTOMATIC = 0,
+	NL_MODE_MANUAL = 1,
+	NL_MODE_MANUAL_SI5SEP = 2, /* SI2 and SI5 have separate neighbor lists */
+};
+
+enum bts_loc_fix {
+	BTS_LOC_FIX_INVALID = 0,
+	BTS_LOC_FIX_2D = 1,
+	BTS_LOC_FIX_3D = 2,
+};
+
+extern const struct value_string bts_loc_fix_names[];
+
+struct bts_location {
+	struct llist_head list;
+	time_t tstamp;
+	enum bts_loc_fix valid;
+	double lat;
+	double lon;
+	double height;
+};
+
+/* One BTS */
+struct gsm_bts {
+	/* list header in net->bts_list */
+	struct llist_head list;
+
+	/* Geographical location of the BTS */
+	struct llist_head loc_list;
+
+	/* number of ths BTS in network */
+	uint8_t nr;
+	/* human readable name / description */
+	char *description;
+	/* Cell Identity */
+	uint16_t cell_identity;
+	/* location area code of this BTS */
+	uint16_t location_area_code;
+	/* Base Station Identification Code (BSIC), lower 3 bits is BCC,
+	 * which is used as TSC for the CCCH */
+	uint8_t bsic;
+	/* type of BTS */
+	enum gsm_bts_type type;
+	enum gsm_bts_type_variant variant;
+	struct gsm_bts_model *model;
+	enum gsm_band band;
+	char version[MAX_VERSION_LENGTH];
+	char sub_model[MAX_VERSION_LENGTH];
+
+	/* features of a given BTS set/reported via OML */
+	struct bitvec features;
+	uint8_t _features_data[MAX_BTS_FEATURES/8];
+
+	/* Connected PCU version (if any) */
+	char pcu_version[MAX_VERSION_LENGTH];
+
+	/* maximum Tx power that the MS is permitted to use in this cell */
+	int ms_max_power;
+
+	/* how do we talk OML with this TRX? */
+	struct gsm_e1_subslot oml_e1_link;
+	uint8_t oml_tei;
+	struct e1inp_sign_link *oml_link;
+	/* when OML link was established */
+	time_t uptime;
+
+	/* Abis network management O&M handle */
+	struct abis_nm_h *nmh;
+
+	struct gsm_abis_mo mo;
+
+	/* number of this BTS on given E1 link */
+	uint8_t bts_nr;
+
+	/* DTX features of this BTS */
+	enum gsm48_dtx_mode dtxu;
+	bool dtxd;
+
+	/* paging state and control */
+	struct gsm_bts_paging_state paging;
+
+	/* CCCH is on C0 */
+	struct gsm_bts_trx *c0;
+
+	struct {
+		struct gsm_abis_mo mo;
+	} site_mgr;
+
+	/* bitmask of all SI that are present/valid in si_buf */
+	uint32_t si_valid;
+	/* 3GPP TS 44.018 Table 10.5.2.33b.1 INDEX and COUNT for SI2quater */
+	uint8_t si2q_index; /* distinguish individual SI2quater messages */
+	uint8_t si2q_count; /* si2q_index for the last (highest indexed) individual SI2quater message */
+	/* buffers where we put the pre-computed SI */
+	sysinfo_buf_t si_buf[_MAX_SYSINFO_TYPE][SI2Q_MAX_NUM];
+	/* offsets used while generating SI2quater */
+	size_t e_offset;
+	size_t u_offset;
+
+	/* ip.accesss Unit ID's have Site/BTS/TRX layout */
+	union {
+		struct {
+			uint16_t site_id;
+			uint16_t bts_id;
+			uint32_t flags;
+			uint32_t rsl_ip;
+		} ip_access;
+		struct {
+			struct {
+				struct gsm_abis_mo mo;
+			} cclk;
+			struct {
+				struct gsm_abis_mo mo;
+			} rack;
+			struct gsm_envabtse envabtse[4];
+		} bs11;
+		struct {
+			struct {
+				struct om2k_mo om2k_mo;
+				struct gsm_abis_mo mo;
+				struct llist_head conn_groups;
+			} cf;
+			struct {
+				struct om2k_mo om2k_mo;
+				struct gsm_abis_mo mo;
+				struct llist_head conn_groups;
+			} is;
+			struct {
+				struct om2k_mo om2k_mo;
+				struct gsm_abis_mo mo;
+				struct llist_head conn_groups;
+			} con;
+			struct {
+				struct om2k_mo om2k_mo;
+				struct gsm_abis_mo mo;
+			} dp;
+			struct {
+				struct om2k_mo om2k_mo;
+				struct gsm_abis_mo mo;
+			} tf;
+			uint32_t use_superchannel:1;
+		} rbs2000;
+		struct {
+			uint8_t bts_type;
+			unsigned int configured:1,
+				skip_reset:1,
+				no_loc_rel_cnf:1,
+				bts_reset_timer_cnf,
+				did_reset:1,
+				wait_reset:1;
+			struct osmo_timer_list reset_timer;
+		} nokia;
+	};
+
+	/* Not entirely sure how ip.access specific this is */
+	struct {
+		uint8_t supports_egprs_11bit_rach;
+		enum bts_gprs_mode mode;
+		struct {
+			struct gsm_abis_mo mo;
+			uint16_t nsei;
+			uint8_t timer[7];
+		} nse;
+		struct {
+			struct gsm_abis_mo mo;
+			uint16_t bvci;
+			uint8_t timer[11];
+			struct gprs_rlc_cfg rlc_cfg;
+		} cell;
+		struct gsm_bts_gprs_nsvc nsvc[2];
+		uint8_t rac;
+		uint8_t net_ctrl_ord;
+		bool ctrl_ack_type_use_block;
+	} gprs;
+
+	/* RACH NM values */
+	int rach_b_thresh;
+	int rach_ldavg_slots;
+
+	/* transceivers */
+	int num_trx;
+	struct llist_head trx_list;
+
+	/* SI related items */
+	int force_combined_si;
+	int bcch_change_mark;
+
+#ifdef ROLE_BSC
+	/* Abis NM queue */
+	struct llist_head abis_queue;
+	int abis_nm_pend;
+
+	struct gsm_network *network;
+
+	/* should the channel allocator allocate channels from high TRX to TRX0,
+	 * rather than starting from TRX0 and go upwards? */
+	int chan_alloc_reverse;
+
+	enum neigh_list_manual_mode neigh_list_manual_mode;
+	/* parameters from which we build SYSTEM INFORMATION */
+	struct {
+		struct gsm48_rach_control rach_control;
+		uint8_t ncc_permitted;
+		struct gsm48_cell_sel_par cell_sel_par;
+		struct gsm48_si_selection_params cell_ro_sel_par; /* rest octet */
+		struct gsm48_cell_options cell_options;
+		struct gsm48_control_channel_descr chan_desc;
+		struct bitvec neigh_list;
+		struct bitvec cell_alloc;
+		struct bitvec si5_neigh_list;
+		struct osmo_earfcn_si2q si2quater_neigh_list;
+		size_t uarfcn_length; /* index for uarfcn and scramble lists */
+		struct {
+			/* bitmask large enough for all possible ARFCN's */
+			uint8_t neigh_list[1024/8];
+			uint8_t cell_alloc[1024/8];
+			/* If the user wants a different neighbor list in SI5 than in SI2 */
+			uint8_t si5_neigh_list[1024/8];
+			uint8_t meas_bw_list[MAX_EARFCN_LIST];
+			uint16_t earfcn_list[MAX_EARFCN_LIST];
+			uint16_t uarfcn_list[MAX_EARFCN_LIST];
+			uint16_t scramble_list[MAX_EARFCN_LIST];
+		} data;
+	} si_common;
+	bool early_classmark_allowed;
+	/* for testing only: Have an infinitely long radio link timeout */
+	bool infinite_radio_link_timeout;
+
+	/* do we use static (user-defined) system information messages? (bitmask) */
+	uint32_t si_mode_static;
+
+	/* exclude the BTS from the global RF Lock handling */
+	int excl_from_rf_lock;
+
+	/* supported codecs beside FR */
+	struct bts_codec_conf codec;
+
+	/* BTS dependencies bit field */
+	uint32_t depends_on[256/(8*4)];
+
+	/* full and half rate multirate config */
+	struct amr_multirate_conf mr_full;
+	struct amr_multirate_conf mr_half;
+
+	/* PCU socket state */
+	char *pcu_sock_path;
+	struct pcu_sock_state *pcu_state;
+
+#endif /* ROLE_BSC */
+	void *role;
+};
+
+
+struct gsm_bts *gsm_bts_alloc(void *talloc_ctx, uint8_t bts_num);
+struct gsm_bts *gsm_bts_num(struct gsm_network *net, int num);
+
+struct gsm_bts_trx *gsm_bts_trx_alloc(struct gsm_bts *bts);
+struct gsm_bts_trx *gsm_bts_trx_num(const struct gsm_bts *bts, int num);
+
+enum gsm_bts_type str2btstype(const char *arg);
+const char *btstype2str(enum gsm_bts_type type);
+
+enum bts_attribute str2btsattr(const char *s);
+const char *btsatttr2str(enum bts_attribute v);
+
+enum gsm_bts_type_variant str2btsvariant(const char *arg);
+const char *btsvariant2str(enum gsm_bts_type_variant v);
+
+extern const struct value_string gsm_chreq_descs[];
+const struct value_string gsm_pchant_names[13];
+const struct value_string gsm_pchant_descs[13];
+const char *gsm_pchan_name(enum gsm_phys_chan_config c);
+enum gsm_phys_chan_config gsm_pchan_parse(const char *name);
+const char *gsm_lchant_name(enum gsm_chan_t c);
+const char *gsm_chreq_name(enum gsm_chreq_reason_t c);
+char *gsm_trx_name(const struct gsm_bts_trx *trx);
+char *gsm_ts_name(const struct gsm_bts_trx_ts *ts);
+char *gsm_ts_and_pchan_name(const struct gsm_bts_trx_ts *ts);
+char *gsm_lchan_name_compute(const struct gsm_lchan *lchan);
+const char *gsm_lchans_name(enum gsm_lchan_state s);
+
+static inline char *gsm_lchan_name(const struct gsm_lchan *lchan)
+{
+	return lchan->name;
+}
+
+static inline int gsm_bts_set_feature(struct gsm_bts *bts, enum gsm_bts_features feat)
+{
+	OSMO_ASSERT(_NUM_BTS_FEAT < MAX_BTS_FEATURES);
+	return bitvec_set_bit_pos(&bts->features, feat, 1);
+}
+
+static inline bool gsm_bts_has_feature(const struct gsm_bts *bts, enum gsm_bts_features feat)
+{
+	OSMO_ASSERT(_NUM_BTS_FEAT < MAX_BTS_FEATURES);
+	return bitvec_get_bit_pos(&bts->features, feat);
+}
+
+void gsm_abis_mo_reset(struct gsm_abis_mo *mo);
+
+struct gsm_abis_mo *
+gsm_objclass2mo(struct gsm_bts *bts, uint8_t obj_class,
+	    const struct abis_om_obj_inst *obj_inst);
+
+struct gsm_nm_state *
+gsm_objclass2nmstate(struct gsm_bts *bts, uint8_t obj_class,
+		 const struct abis_om_obj_inst *obj_inst);
+void *
+gsm_objclass2obj(struct gsm_bts *bts, uint8_t obj_class,
+	     const struct abis_om_obj_inst *obj_inst);
+
+/* reset the state of all MO in the BTS */
+void gsm_bts_mo_reset(struct gsm_bts *bts);
+
+uint8_t gsm_pchan2chan_nr(enum gsm_phys_chan_config pchan,
+			  uint8_t ts_nr, uint8_t lchan_nr);
+uint8_t gsm_lchan2chan_nr(const struct gsm_lchan *lchan);
+uint8_t gsm_lchan_as_pchan2chan_nr(const struct gsm_lchan *lchan,
+				   enum gsm_phys_chan_config as_pchan);
+
+/* return the gsm_lchan for the CBCH (if it exists at all) */
+struct gsm_lchan *gsm_bts_get_cbch(struct gsm_bts *bts);
+
+/*
+ * help with parsing regexps
+ */
+int gsm_parse_reg(void *ctx, regex_t *reg, char **str,
+		int argc, const char **argv) __attribute__ ((warn_unused_result));
+
+static inline uint8_t gsm_ts_tsc(const struct gsm_bts_trx_ts *ts)
+{
+	if (ts->tsc != -1)
+		return ts->tsc;
+	else
+		return ts->trx->bts->bsic & 7;
+}
+
+struct gsm_lchan *rsl_lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr,
+				   int *rc);
+
+enum gsm_phys_chan_config ts_pchan(struct gsm_bts_trx_ts *ts);
+uint8_t ts_subslots(struct gsm_bts_trx_ts *ts);
+bool ts_is_tch(struct gsm_bts_trx_ts *ts);
+
+#endif