1133 lines
34 KiB
C
1133 lines
34 KiB
C
#ifndef _GSM_DATA_H
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#define _GSM_DATA_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <osmocom/core/timer.h>
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#include <osmocom/core/rate_ctr.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/socket.h>
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#include <osmocom/core/stats.h>
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#include <osmocom/core/stat_item.h>
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#include <osmocom/gsm/bts_features.h>
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#include <osmocom/gsm/protocol/gsm_08_08.h>
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#include <osmocom/gsm/protocol/gsm_48_049.h>
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#include <osmocom/gsm/gsm0808.h>
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#include <osmocom/gsm/gsm48.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/core/tdef.h>
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#include <osmocom/core/time_cc.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/linuxrbtree.h>
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#include <osmocom/crypt/auth.h>
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#include <osmocom/gsm/gsm48_rest_octets.h>
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#include <osmocom/core/bitvec.h>
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/gsm/rxlev_stat.h>
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#include <osmocom/gsm/protocol/gsm_08_58.h>
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#include <osmocom/gsm/protocol/gsm_12_21.h>
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#include <osmocom/gsm/protocol/gsm_03_41.h>
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#include <osmocom/abis/e1_input.h>
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#include <osmocom/bsc/bts_setup_ramp.h>
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#include <osmocom/bsc/meas_rep.h>
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#include <osmocom/bsc/acc.h>
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#include <osmocom/bsc/osmux.h>
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#include <osmocom/bsc/chan_counts.h>
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#include <osmocom/bsc/lchan.h>
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#define GSM_T3122_DEFAULT 10
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#define GSM_T3105_DEFAULT 100UL
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#define GSM_T3124_SDCCH 675UL
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#define GSM_T3124_OTHER_CH 320UL
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#define GSM_T3124_MAX GSM_T3124_SDCCH
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/* Some guess for delta (see comment below) */
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#define GSM_NY1_REQ_DELTA 1000UL
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/* Requirements: We want Ny1 to be as low as possible, while respecting T3105 * Ny1 > T3124 + delta
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* with delta = time between expiration of T3124 and receiving HANDOVER FAILURE by the serving BSC. */
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#define GSM_NY1_DEFAULT ((unsigned long)((GSM_T3124_MAX + GSM_NY1_REQ_DELTA)/GSM_T3105_DEFAULT + 1))
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#define SCCP_CONN_ID_UNSET 0xFFFFFFFF
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#define SCCP_CONN_ID_MAX 0x00FFFFFE
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struct mgcp_client_conf;
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struct mgcp_client;
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struct gsm0808_cell_id;
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struct osmo_mgcpc_ep;
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struct gsm_bts;
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struct gsm_bts_trx;
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/** annotations for msgb ownership */
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#define __uses
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#define OBSC_NM_W_ACK_CB(__msgb) (__msgb)->cb[3]
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struct bsc_subscr;
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struct gprs_ra_id;
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struct handover;
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struct osmo_sccp_instance;
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struct smlc_config;
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#define OBSC_LINKID_CB(__msgb) (__msgb)->cb[3]
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/* Data Link Connection Identifier (DLCI) is defined in 3GPP TS 48.006, section 9.3.2.
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* .... .SSS - SAPI value used on the radio link;
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* CC.. .... - control channel identification:
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* 00.. .... - indicates that the control channel is not further specified,
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* 10.. .... - represents the FACCH or the SDCCH,
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* 11.. .... - represents the SACCH,
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* other values are reserved. */
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#define RSL_LINK_ID2DLCI(link_id) \
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((link_id & 0x40 ? 0xc0 : 0x80) | (link_id & 0x07))
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/* RSL Link Identifier is defined in 3GPP TS 3GPP TS 48.058, section 9.3.2.
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* .... .SSS - SAPI value used on the radio link;
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* ...P P... - priority for SAPI0 messages;
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* CC.. .... - control channel identification:
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* 00.. .... - main signalling channel (FACCH or SDCCH),
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* 01.. .... - SACCH,
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* other values are reserved. */
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#define DLCI2RSL_LINK_ID(dlci) \
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((dlci & 0xc0) == 0xc0 ? 0x40 : 0x00) | (dlci & 0x07)
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/* 3-bit long values */
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#define EARFCN_PRIO_INVALID 8
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#define EARFCN_MEAS_BW_INVALID 8
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/* 5-bit long values */
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#define EARFCN_QRXLV_INVALID 32
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#define EARFCN_THRESH_LOW_INVALID 32
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struct msgb;
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typedef int gsm_cbfn(unsigned int hooknum,
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unsigned int event,
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struct msgb *msg,
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void *data, void *param);
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struct gsm_classmark {
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bool classmark1_set;
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struct gsm48_classmark1 classmark1;
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uint8_t classmark2_len;
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uint8_t classmark2[3];
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uint8_t classmark3_len;
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uint8_t classmark3[14]; /* if cm3 gets extended by spec, it will be truncated */
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};
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enum subscr_sccp_state {
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SUBSCR_SCCP_ST_NONE,
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SUBSCR_SCCP_ST_WAIT_CONN_CONF,
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SUBSCR_SCCP_ST_CONNECTED
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};
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enum assign_for {
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ASSIGN_FOR_NONE,
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ASSIGN_FOR_BSSMAP_REQ,
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ASSIGN_FOR_CONGESTION_RESOLUTION,
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ASSIGN_FOR_VTY,
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};
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extern const struct value_string assign_for_names[];
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static inline const char *assign_for_name(enum assign_for assign_for)
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{ return get_value_string(assign_for_names, assign_for); }
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/* Information retrieved during an Assignment Request from the MSC. This is storage of the Assignment instructions
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* parsed from the Assignment Request message, to pass on until the gscon and assignment FSMs have decided whether an
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* Assignment is actually going to be carried out. Should remain unchanged after initial decoding. */
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struct assignment_request {
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enum assign_for assign_for;
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bool aoip;
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bool vgcs;
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uint16_t msc_assigned_cic;
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char msc_rtp_addr[INET6_ADDRSTRLEN];
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uint16_t msc_rtp_port;
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bool use_osmux;
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uint8_t osmux_cid;
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/* Rate/codec setting in preference order (need at least 1 !) */
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int n_ch_mode_rate;
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struct channel_mode_and_rate ch_mode_rate_list[3];
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/* An assignment request usually requests to assign any available lchan, to match above requirements. This may
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* also choose to just keep the current lchan and merely modify it as appropriate. In these cases, keep
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* target_lchan == NULL.
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* In some situations, an assignment to a specific target lchan is requested (congestion resolution, VAMOS
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* multiplexing, user request via VTY). In these situations, select a target lchan beforehand and point
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* target_lchan to it. */
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struct gsm_lchan *target_lchan;
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/* The TSC Set to use if 'use' is true, otherwise automatically determine the TSC Set value to use. Valid range
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* is 1 to 4, as described in 3GPP TS 45.002. */
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struct optional_val tsc_set;
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/* The TSC to use if 'use' is true, otherwise automatically determine the TSC value to use. Valid range is 0 to
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* 7, as described in 3GPP TS 45.002. */
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struct optional_val tsc;
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/* The "speech / data indicator" from 3GPP TS 48.008 § 3.2.2.11 Channel Type (speech/data/signalling). */
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enum gsm0808_chan_indicator ch_indctr;
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};
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/* State of an ongoing Assignment, while the assignment_fsm is still busy. This serves as state separation to keep the
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* currently used lchan and gscon unmodified until the outcome of an Assignment is known. If the Assignment fails, this
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* state is simply discarded, and the gscon carries on with the original lchan remaining unchanged. */
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struct assignment_fsm_data {
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/* The request as made by the caller, see GSCON_EV_ASSIGNMENT_START or reassignment_request_to_lchan() /
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* reassignment_request_to_chan_type().
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* conn->assignment.req is treated immutable: remains unchanged throughout the Assignment. The mutable fields
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* are below: choices and automatic adjustments are stored in conn->assignment.*, not conn->assignment.req.
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*/
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struct assignment_request req;
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enum gsm0808_chan_indicator ch_indctr;
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struct channel_mode_and_rate selected_ch_mode_rate;
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struct osmo_fsm_inst *fi;
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struct gsm_lchan *new_lchan;
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/* Whether this assignment triggered creation of the MGW endpoint: if the assignment
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* fails, we will release that again as soon as possible. (If false, the endpoint already
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* existed before or isn't needed at all.)*/
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struct osmo_mgcpc_ep_ci *created_ci_for_msc;
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enum gsm0808_cause failure_cause;
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enum gsm48_rr_cause rr_cause;
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bool result_rate_ctr_done;
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};
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enum hodec_id {
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HODEC_NONE,
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HODEC1 = 1,
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HODEC2 = 2,
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HODEC_USER,
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HODEC_REMOTE,
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};
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/* For example, to count specific kinds of ongoing handovers, it is useful to be able to OR-combine
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* scopes. */
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enum handover_scope {
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HO_NO_HANDOVER = 0,
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HO_INTRA_CELL = 0x1,
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HO_INTRA_BSC = 0x2,
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HO_INTER_BSC_OUT = 0x4,
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HO_INTER_BSC_IN = 0x8,
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HO_SCOPE_ALL = 0xffff,
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};
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extern const struct value_string handover_scope_names[];
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inline static const char *handover_scope_name(enum handover_scope val)
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{ return get_value_string(handover_scope_names, val); }
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/* Cell ARFCN + BSIC. */
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struct cell_ab {
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uint16_t arfcn;
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uint8_t bsic;
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};
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struct handover_out_req {
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enum hodec_id from_hodec_id;
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struct gsm_lchan *old_lchan;
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struct cell_ab target_cell_ab;
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enum gsm_chan_t new_lchan_type; /*< leave GSM_LCHAN_NONE to use same as old_lchan */
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};
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struct handover_in_req {
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struct gsm0808_channel_type ct;
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struct gsm0808_speech_codec_list scl;
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struct gsm0808_encrypt_info ei;
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/* The same information as in 'ei' but as the handy bitmask as on the wire. */
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uint8_t ei_as_bitmask;
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bool kc128_present;
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uint8_t kc128[16];
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struct gsm_classmark classmark;
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/* chosen_encr_alg reflects the encoded value as in RSL_ENC_ALG_A5(a5_numer):
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* chosen_encr_alg == 1 means A5/0 i.e. no encryption, chosen_encr_alg == 4 means A5/3.
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* chosen_encr_alg == 0 means no such IE was present. */
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uint8_t chosen_encr_alg;
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struct gsm0808_cell_id cell_id_serving;
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char cell_id_serving_name[64];
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struct gsm0808_cell_id cell_id_target;
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char cell_id_target_name[64];
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uint16_t msc_assigned_cic;
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char msc_assigned_rtp_addr[INET6_ADDRSTRLEN];
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uint16_t msc_assigned_rtp_port;
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bool last_eutran_plmn_valid;
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struct osmo_plmn_id last_eutran_plmn;
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};
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struct handover {
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struct osmo_fsm_inst *fi;
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enum hodec_id from_hodec_id;
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enum handover_scope scope;
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enum gsm_chan_t new_lchan_type;
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struct cell_ab target_cell_ab;
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/* For inter-BSC handover, this may reflect more than one Cell ID. Must also be set for intra-BSC handover,
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* because it is used as key for penalty timers (e.g. in handover decision 2). */
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struct gsm0808_cell_id_list2 target_cell_ids;
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uint8_t ho_ref;
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struct gsm_bts *new_bts;
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struct gsm_lchan *new_lchan;
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bool async;
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struct handover_in_req inter_bsc_in;
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struct osmo_mgcpc_ep_ci *created_ci_for_msc;
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};
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struct gsm_subscriber_connection;
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struct bscp_sccp_conn_node {
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/* entry in (struct bsc_sccp_inst)->connections */
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struct rb_node node;
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/* Sigtran connection ID:
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* if set: Range (0..SCCP_CONN_ID_MAX) (24 bit)
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* if unset: SCCP_CONN_ID_UNSET (-1) if unset */
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uint32_t conn_id;
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/* backpointer where this sccp conn belongs to: */
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struct gsm_subscriber_connection *gscon;
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};
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void bscp_sccp_conn_node_init(struct bscp_sccp_conn_node *sccp_conn, struct gsm_subscriber_connection *gscon);
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/* active radio connection of a mobile subscriber */
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struct gsm_subscriber_connection {
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/* global linked list of subscriber_connections */
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struct llist_head entry;
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/* FSM instance to control the subscriber connection state (RTP, A) */
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struct osmo_fsm_inst *fi;
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/* libbsc subscriber information (if available) */
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struct bsc_subscr *bsub;
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/* back pointers */
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struct gsm_network *network;
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/* the primary / currently active lchan to the BTS/subscriber. During Assignment and Handover, separate lchans
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* are kept in the .assignment or .handover sub-structs, respectively, so that this lchan remains unaffected
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* until Assignment or Handover have actually succeeded. */
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struct gsm_lchan *lchan;
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/* Only valid during an ongoing Assignment; might be overwritten at any time by a failed Assignment attempt.
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* Once an Assignment was successful, all relevant state must be copied out of this sub-struct. */
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struct assignment_fsm_data assignment;
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/* handover information, if a handover is pending for this conn. Valid only during an ongoing Handover
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* operation. If a Handover was successful, all relevant state must be copied out of this sub-struct. */
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struct handover ho;
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/* Queue DTAP messages during handover/assignment (msgb_enqueue()/msgb_dequeue())*/
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struct llist_head dtap_queue;
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unsigned int dtap_queue_len;
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struct {
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int failures;
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struct llist_head penalty_timers;
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} hodec2;
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/* "Codec List (MSC Preferred)" as received by the BSSAP Assignment Request. 3GPP 48.008
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* 3.2.2.103 says:
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* The "Codec List (MSC Preferred)" shall not include codecs
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* that are not supported by the MS.
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* i.e. by heeding the "Codec list (MSC Preferred)", we inherently heed the MS bearer
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* capabilities, which the MSC is required to translate into the codec list. */
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struct gsm0808_speech_codec_list codec_list;
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/* flag to prevent multiple simultaneous ciphering commands */
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int ciphering_handled;
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/* SCCP connection associated with this subscriber_connection */
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struct {
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/* SCCP connection related */
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struct bsc_msc_data *msc;
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enum subscr_sccp_state state;
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struct bscp_sccp_conn_node conn;
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} sccp;
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/* for audio handling */
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struct {
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uint16_t msc_assigned_cic;
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/* RTP address where the MSC expects us to send the RTP stream coming from the BTS. */
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char msc_assigned_rtp_addr[INET6_ADDRSTRLEN];
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uint16_t msc_assigned_rtp_port;
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/* The endpoint at the MGW used to join both BTS and MSC side connections, e.g.
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* "rtpbridge/23@mgw". */
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struct osmo_mgcpc_ep *mgw_endpoint;
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/* The connection identifier of the osmo_mgcpc_ep used to transceive RTP towards the MSC.
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* (The BTS side CI is handled by struct gsm_lchan and the lchan_fsm.) */
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struct osmo_mgcpc_ep_ci *mgw_endpoint_ci_msc;
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} user_plane;
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/* LCLS (local call, local switch) related state */
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struct {
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uint8_t global_call_ref[15];
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uint8_t global_call_ref_len; /* length of global_call_ref */
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enum gsm0808_lcls_config config; /* TS 48.008 3.2.2.116 */
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enum gsm0808_lcls_control control; /* TS 48.008 3.2.2.117 */
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/* LCLS FSM */
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struct osmo_fsm_inst *fi;
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/* pointer to "other" connection, if Call Leg Relocation was successful */
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struct gsm_subscriber_connection *other;
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} lcls;
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/* MS Power Class, TS 05.05 sec 4.1.1 "Mobile station". 0 means unset. */
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uint8_t ms_power_class:3;
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bool rx_clear_command;
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/* Location Services handling for this subscriber */
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struct {
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/* FSM to handle Perform Location Request coming in from the MSC via A interface,
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* and receive BSSMAP-LE responses from the SMLC. */
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struct lcs_loc_req *loc_req;
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/* FSM to handle BSSLAP requests coming in from the SMLC via Lb interface.
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* BSSLAP APDU are encapsulated in BSSMAP-LE Connection Oriented Information messages. */
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struct lcs_bsslap *bsslap;
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/* Lb interface to the SMLC: BSSMAP-LE/SCCP connection associated with this subscriber */
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struct {
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enum subscr_sccp_state state;
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struct bscp_sccp_conn_node conn;
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} lb;
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} lcs;
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struct gsm48_classmark3 cm3;
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bool cm3_valid;
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struct {
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bool allowed; /* Is fast return to LTE allowed once the conn is released? */
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bool last_eutran_plmn_valid; /* Is information stored in field below available? */
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struct osmo_plmn_id last_eutran_plmn;
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} fast_return;
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enum gsm0808_cause clear_cause;
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/* VGCS/VBS "call controling" connection */
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struct {
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/* Features supported by MSC/BSC */
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bool ff_present;
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struct gsm0808_vgcs_feature_flags ff;
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/* Group Call Reference IE */
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struct gsm0808_group_callref gc_ie;
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enum gsm0808_service_flag sf;
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uint32_t call_ref;
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/* Call (BSC) FSM */
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struct osmo_fsm_inst *fi;
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/* Current talker */
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struct gsm_subscriber_connection *talker;
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/* L3 info of link establihment (Talker established) */
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struct llist_head l3_queue;
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/* Flag and cause (Talker released) */
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bool talker_rel;
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uint8_t talker_cause;
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/* Flag that states acknowledgement of the talker by MSC */
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bool msc_ack;
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/* List of VGCS/VBS "resource controling" connections */
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struct llist_head chan_list;
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} vgcs_call;
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/* VGCS/VBS "resource controling" connection */
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struct {
|
|
/* List entry of chan_list of "call controling" connection */
|
|
struct llist_head list;
|
|
/* Group Call Reference IE */
|
|
struct gsm0808_group_callref gc_ie;
|
|
enum gsm0808_service_flag sf;
|
|
uint32_t call_ref;
|
|
/* Channel type IE */
|
|
struct gsm0808_channel_type ct;
|
|
/* Channel mode and rate */
|
|
struct channel_mode_and_rate ch_mode_rate;
|
|
/* Cell Identifier IE */
|
|
struct gsm0808_cell_id ci;
|
|
char ci_str[16];
|
|
/* Assignment Requirements IE */
|
|
enum gsm0808_assignment_requirement ar;
|
|
/* Call Identifier IE */
|
|
uint32_t call_id;
|
|
/* Pointer to VGCS/VBS "call controling" gsconn */
|
|
struct gsm_subscriber_connection *call;
|
|
/* Cell (BTS) FSM */
|
|
struct osmo_fsm_inst *fi;
|
|
/* lchan to be assigned */
|
|
struct gsm_lchan *new_lchan;
|
|
/* MGW peer */
|
|
char msc_rtp_addr[INET6_ADDRSTRLEN];
|
|
uint16_t msc_rtp_port;
|
|
} vgcs_chan;
|
|
};
|
|
|
|
|
|
/* 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;
|
|
|
|
/* 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 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
|
|
|
|
enum gsm_hooks {
|
|
GSM_HOOK_NM_SWLOAD,
|
|
GSM_HOOK_RR_PAGING,
|
|
GSM_HOOK_RR_SECURITY,
|
|
};
|
|
|
|
enum bts_gprs_mode {
|
|
BTS_GPRS_NONE = 0,
|
|
BTS_GPRS_GPRS = 1,
|
|
BTS_GPRS_EGPRS = 2,
|
|
};
|
|
|
|
struct gsm_lchan;
|
|
struct osmo_rtp_socket;
|
|
struct rtp_socket;
|
|
|
|
/* 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 gsm_bts *bts;
|
|
struct osmo_fsm_inst *fi;
|
|
bool sw_act_rep_received;
|
|
bool opstart_sent;
|
|
bool adm_unlock_sent;
|
|
bool get_attr_sent;
|
|
bool get_attr_rep_received;
|
|
bool set_attr_sent;
|
|
bool set_attr_ack_received;
|
|
bool rsl_connect_sent;
|
|
bool rsl_connect_ack_received;
|
|
bool force_rf_lock;
|
|
/* vendor specific fields below */
|
|
union {
|
|
struct {
|
|
uint8_t obj_version;
|
|
} ipaccess;
|
|
};
|
|
};
|
|
|
|
/* 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 A38_XOR_MIN_KEY_LEN 12
|
|
#define A38_XOR_MAX_KEY_LEN 16
|
|
#define A38_COMP128_KEY_LEN 16
|
|
|
|
/* There are these representations of A5/n:
|
|
*
|
|
* - (uint8_t)(1<<n), either as a single bit, or combined as a list of
|
|
* permitted algorithms.
|
|
* A5/0 == 0x01, A5/3 == 0x08, none = 0
|
|
*
|
|
* - n+1, used on the RSL wire.
|
|
* A5/0 == 1, A5/3 == 4, none = 0
|
|
*
|
|
* - n, used for human interaction and returned by select_best_cipher().
|
|
* A5/0 == 0, A5/3 == 3, none <= -1
|
|
*
|
|
* These macros convert from n to the other representations:
|
|
*/
|
|
#define ALG_A5_NR_TO_RSL(A5_N) ((int)(A5_N) >= 0 ? (A5_N)+1 : 0)
|
|
#define ALG_A5_NR_TO_BSSAP(A5_N) ALG_A5_NR_TO_RSL(A5_N)
|
|
#define ALG_A5_NR_TO_PERM_ALG_BITS(A5_N) ((int)(A5_N) >= 0 ? 1<<(A5_N) : 0)
|
|
|
|
/* Up to 16 SI2quater are multiplexed; each fits 3 EARFCNS, so the practical maximum is 3*16.
|
|
* The real maximum that fits in a total of 16 SI2quater rest octets also depends on the bits left by other SI2quater
|
|
* rest octets elements, so to really fit 48 EARFCNs most other SI2quater elements need to be omitted. */
|
|
#define MAX_EARFCN_LIST (3*16)
|
|
|
|
/* 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 */
|
|
|
|
/* Iterate at most N lchans of the given timeslot.
|
|
* usage:
|
|
* struct gsm_lchan *lchan;
|
|
* struct gsm_bts_trx_ts *ts = get_some_timeslot();
|
|
* ts_for_n_lchans(lchan, ts, 3) {
|
|
* LOG_LCHAN(lchan, LOGL_DEBUG, "hello world\n");
|
|
* }
|
|
*/
|
|
#define ts_for_n_lchans(lchan, ts, N) \
|
|
for (lchan = (ts)->lchan; \
|
|
((lchan - (ts)->lchan) < ARRAY_SIZE((ts)->lchan)) \
|
|
&& lchan->fi \
|
|
&& ((lchan - (ts)->lchan) < (N)); \
|
|
lchan++)
|
|
|
|
#define INTERF_DBM_UNKNOWN 0
|
|
#define INTERF_BAND_UNKNOWN 0xff
|
|
|
|
/* 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;
|
|
|
|
struct osmo_fsm_inst *fi;
|
|
char *last_errmsg;
|
|
|
|
/* vty phys_chan_config setting, not necessarily in effect in case it was changed in the telnet
|
|
* vty after OML activation. Gets written on vty 'write file'. */
|
|
enum gsm_phys_chan_config pchan_from_config;
|
|
/* When the timeslot OML is established, pchan_from_config is copied here. This is the pchan
|
|
* currently in effect; for dynamic ts, this is the dyn kind (GSM_PCHAN_OSMO_DYN or
|
|
* GSM_PCHAN_TCH_F_PDCH) and does not show the pchan type currently active. */
|
|
enum gsm_phys_chan_config pchan_on_init;
|
|
/* This is the *actual* pchan type currently active. For dynamic timeslots, this reflects either
|
|
* GSM_PCHAN_NONE or one of the standard GSM_PCHAN_TCH_F, GSM_PCHAN_TCH_H, GSM_PCHAN_PDCH.
|
|
* Callers can use this transparently without being aware of dyn ts. */
|
|
enum gsm_phys_chan_config pchan_is;
|
|
|
|
/* After a PDCH ACT NACK, we shall not infinitely loop to try and ACT again.
|
|
* Also marks a timeslot where PDCH was deactivated by VTY. This is cleared whenever a timeslot
|
|
* enters IN_USE state, i.e. after each TCH use we try to PDCH ACT once again. */
|
|
bool pdch_act_allowed;
|
|
|
|
/* Whether TS_EV_OML_READY was received */
|
|
bool is_oml_ready;
|
|
/* Whether TS_EV_RSL_READY was received */
|
|
bool is_rsl_ready;
|
|
|
|
struct gsm_abis_mo mo;
|
|
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;
|
|
};
|
|
|
|
/* Maximum BCCH carrier power reduction */
|
|
uint8_t c0_max_power_red_db;
|
|
|
|
/* Maximum number of lchans that could become usable, for example by switching a dynamic timeslot's type or by
|
|
* enabling VAMOS secondary lchans. This does include the maximum count of possible VAMOS secondary lchans. */
|
|
uint8_t max_lchans_possible;
|
|
/* Currently usable lchans, according to the current pchan mode (for dynamic timeslots, this may change).
|
|
* Does not include count of secondary VAMOS lchans. */
|
|
uint8_t max_primary_lchans;
|
|
struct gsm_lchan lchan[TS_MAX_LCHAN];
|
|
|
|
struct chan_counts chan_counts;
|
|
};
|
|
|
|
struct gsm_envabtse {
|
|
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;
|
|
};
|
|
|
|
/* Channel load counter */
|
|
struct load_counter {
|
|
unsigned int total;
|
|
unsigned int used;
|
|
};
|
|
|
|
/* A single Page of a SMSCB message */
|
|
struct bts_smscb_page {
|
|
/* SMSCB message we're part of */
|
|
struct bts_smscb_message *msg;
|
|
/* Page Number within message (1 to 15) */
|
|
uint8_t nr;
|
|
/* number of valid blocks in data (up to 4) */
|
|
uint8_t num_blocks;
|
|
/* up to four blocks of 22 bytes each */
|
|
uint8_t data[88];
|
|
};
|
|
|
|
/* A SMSCB message (received from CBSP) */
|
|
struct bts_smscb_message {
|
|
/* entry in bts_smscb_chan_state.messages */
|
|
struct llist_head list;
|
|
struct {
|
|
/* input data from CBSP (CBC) side */
|
|
uint16_t msg_id;
|
|
uint16_t serial_nr;
|
|
enum cbsp_category category;
|
|
uint16_t rep_period;
|
|
uint16_t num_bcast_req;
|
|
uint8_t dcs;
|
|
} input;
|
|
/* how often have all pages of this message been broadcast? */
|
|
uint32_t bcast_count;
|
|
/* actual page data of this message */
|
|
uint8_t num_pages; /* up to 15 */
|
|
struct bts_smscb_page page[15];
|
|
};
|
|
|
|
/* per-channel (basic/extended) CBCH state for a single BTS */
|
|
struct bts_smscb_chan_state {
|
|
/* back-pointer to BTS */
|
|
struct gsm_bts *bts;
|
|
/* list of bts_smscb_message */
|
|
struct llist_head messages;
|
|
/* scheduling array; pointer of SMSCB pages */
|
|
struct bts_smscb_page **sched_arr;
|
|
size_t sched_arr_size;
|
|
/* index of the next to be transmitted page into the scheduler array */
|
|
size_t next_idx;
|
|
/* number of messages we have to pause due to overflow */
|
|
uint8_t overflow;
|
|
};
|
|
|
|
#define ETWS_PRIM_NOTIF_SIZE 56
|
|
#define ETWS_SEC_INFO_SIZE (ETWS_PRIM_NOTIF_SIZE - sizeof(struct gsm341_etws_message))
|
|
|
|
/* per-BTS ETWS/PWS (Emergency) state */
|
|
struct bts_etws_state {
|
|
/* are we actively broadcasting emergency in this cell? */
|
|
bool active;
|
|
/* input parameters received from CBC */
|
|
struct {
|
|
uint16_t msg_id;
|
|
uint16_t serial_nr;
|
|
uint16_t warn_type;
|
|
uint8_t sec_info[ETWS_SEC_INFO_SIZE];
|
|
} input;
|
|
/* encoded ETWS primary notification */
|
|
uint8_t primary[ETWS_PRIM_NOTIF_SIZE];
|
|
|
|
/* timer running for the duration of the ETWS Primary Notification (PN) */
|
|
struct osmo_timer_list timer;
|
|
};
|
|
|
|
struct bts_oml_fail_rep {
|
|
struct llist_head list;
|
|
time_t time;
|
|
struct msgb *mb;
|
|
};
|
|
|
|
/* One rejected BTS */
|
|
struct gsm_bts_rejected {
|
|
/* list header in net->bts_rejected */
|
|
struct llist_head list;
|
|
|
|
uint16_t site_id;
|
|
uint16_t bts_id;
|
|
char ip[INET6_ADDRSTRLEN];
|
|
time_t time;
|
|
};
|
|
|
|
extern struct osmo_tdef_group bsc_tdef_group[];
|
|
|
|
struct gsm_network *gsm_network_init(void *ctx);
|
|
|
|
struct gsm_bts *gsm_bts_num(const struct gsm_network *net, int num);
|
|
struct gsm_bts *gsm_bts_by_cell_id(const struct gsm_network *net,
|
|
const struct gsm0808_cell_id *cell_id,
|
|
int match_idx);
|
|
|
|
extern const struct value_string gsm_chreq_descs[];
|
|
extern const struct value_string gsm_pchant_names[];
|
|
extern const struct value_string gsm_pchant_descs[];
|
|
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_chreq_name(enum gsm_chreq_reason_t c);
|
|
char *gsm_ts_name(const struct gsm_bts_trx_ts *ts);
|
|
char *gsm_ts_and_pchan_name(const struct gsm_bts_trx_ts *ts);
|
|
|
|
void gsm_abis_mo_reset(struct gsm_abis_mo *mo);
|
|
void gsm_mo_init(struct gsm_abis_mo *mo, struct gsm_bts *bts,
|
|
uint8_t obj_class, uint8_t p1, uint8_t p2, uint8_t p3);
|
|
|
|
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);
|
|
|
|
int gsm_pchan2chan_nr(enum gsm_phys_chan_config pchan,
|
|
uint8_t ts_nr, uint8_t lchan_nr, bool vamos_is_secondary);
|
|
int gsm_lchan2chan_nr(const struct gsm_lchan *lchan, bool allow_osmo_cbits);
|
|
int gsm_lchan_and_pchan2chan_nr(const struct gsm_lchan *lchan, enum gsm_phys_chan_config pchan, bool allow_osmo_cbits);
|
|
|
|
int gsm48_lchan2chan_desc(struct gsm48_chan_desc *cd,
|
|
const struct gsm_lchan *lchan,
|
|
uint8_t tsc, bool allow_osmo_cbits);
|
|
int gsm48_lchan_and_pchan2chan_desc(struct gsm48_chan_desc *cd,
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const struct gsm_lchan *lchan,
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enum gsm_phys_chan_config pchan,
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uint8_t tsc, bool allow_osmo_cbits);
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uint8_t gsm_ts_tsc(const struct gsm_bts_trx_ts *ts);
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uint8_t pchan_subslots(enum gsm_phys_chan_config pchan);
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uint8_t pchan_subslots_vamos(enum gsm_phys_chan_config pchan);
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bool ts_is_tch(struct gsm_bts_trx_ts *ts);
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struct gsm_bts *conn_get_bts(struct gsm_subscriber_connection *conn);
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void conn_update_ms_power_class(struct gsm_subscriber_connection *conn, uint8_t power_class);
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struct gsm_tz {
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int override; /* if 0, use system's time zone instead. */
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int hr; /* hour */
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int mn; /* minute */
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int dst; /* daylight savings */
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};
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struct all_allocated {
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struct osmo_time_cc sdcch;
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struct osmo_time_cc static_sdcch;
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struct osmo_time_cc tch;
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struct osmo_time_cc static_tch;
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};
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struct bsc_sccp_inst {
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struct osmo_sccp_instance *sccp; /* backpointer */
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/* rbtree root of 'struct bscp_sccp_conn_node' in this instance, ordered by conn_id */
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struct rb_root connections;
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uint32_t next_id; /* next id to allocate */
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};
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struct bsc_sccp_inst *bsc_sccp_inst_alloc(void *ctx);
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uint32_t bsc_sccp_inst_next_conn_id(struct bsc_sccp_inst *bsc_sccp);
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int bsc_sccp_inst_register_gscon(struct bsc_sccp_inst *bsc_sccp, struct bscp_sccp_conn_node *sccp_conn);
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void bsc_sccp_inst_unregister_gscon(struct bsc_sccp_inst *bsc_sccp, struct bscp_sccp_conn_node *sccp_conn);
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struct gsm_subscriber_connection *bsc_sccp_inst_get_gscon_by_conn_id(const struct bsc_sccp_inst *bsc_sccp, uint32_t conn_id);
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|
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struct gsm_network {
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struct osmo_plmn_id plmn;
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|
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/* bit-mask of permitted encryption algorithms. LSB=A5/0, MSB=A5/7 */
|
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uint8_t a5_encryption_mask;
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int neci;
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|
|
|
struct handover_cfg *ho;
|
|
struct {
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unsigned int congestion_check_interval_s;
|
|
struct osmo_timer_list congestion_check_timer;
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|
} hodec2;
|
|
|
|
/* structures for keeping rate counters and gauge stats */
|
|
struct rate_ctr_group *bsc_ctrs;
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struct osmo_stat_item_group *bsc_statg;
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|
|
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unsigned int num_bts;
|
|
struct llist_head bts_list;
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|
struct llist_head bts_rejected;
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|
|
|
/* BTS-based counters when we can't find the actual BTS
|
|
* e.g. when conn->lchan is NULL */
|
|
struct rate_ctr_group *bts_unknown_ctrs;
|
|
struct osmo_stat_item_group *bts_unknown_statg;
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|
|
|
/* see gsm_network_T_defs */
|
|
struct osmo_tdef *T_defs;
|
|
|
|
enum gsm_chan_t ctype_by_chreq[_NUM_CHREQ_T];
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|
|
|
/* Use a TCH for handling requests of type paging any */
|
|
int pag_any_tch;
|
|
|
|
/* msc configuration */
|
|
struct llist_head mscs;
|
|
unsigned int mscs_round_robin_next_nr;
|
|
/* Emergency calls potentially select a different set of MSCs, so to not mess up the normal round-robin
|
|
* behavior, emergency calls need a separate round-robin counter. */
|
|
unsigned int mscs_round_robin_next_emerg_nr;
|
|
|
|
/* rf ctl related bits */
|
|
int mid_call_timeout;
|
|
char *rf_ctrl_name;
|
|
struct osmo_bsc_rf *rf_ctrl;
|
|
int auto_off_timeout;
|
|
|
|
struct bsc_cbc_link *cbc;
|
|
|
|
/* control interface */
|
|
struct ctrl_handle *ctrl;
|
|
|
|
/* Allow or disallow TCH/F on dynamic TCH/F_TCH/H_SDCCH8_PDCH; OS#1778 */
|
|
bool dyn_ts_allow_tch_f;
|
|
|
|
/* all active subscriber connections. */
|
|
struct llist_head subscr_conns;
|
|
|
|
/* if override is nonzero, this timezone data is used for all MM
|
|
* contexts. */
|
|
/* TODO: in OsmoNITB, tz-override used to be BTS-specific. To enable
|
|
* BTS|RNC specific timezone overrides for multi-tz networks in
|
|
* OsmoMSC, this should be tied to the location area code (LAC). */
|
|
struct gsm_tz tz;
|
|
|
|
/* Keeps track of struct bsc_subcr. */
|
|
struct bsc_subscr_store *bsc_subscribers;
|
|
|
|
/* Timer for periodic channel load measurements to maintain each BTS's T3122. */
|
|
struct osmo_timer_list t3122_chan_load_timer;
|
|
|
|
/* Timer to write each BTS's uptime counter state to the stats system. */
|
|
struct osmo_timer_list bts_store_uptime_timer;
|
|
|
|
/* Timer to write each BTS's set of lchan duration counters' state to the stats system. */
|
|
struct osmo_timer_list bts_store_lchan_durations_timer;
|
|
|
|
struct {
|
|
/* Single MGCP client configuration under msc node (also required for
|
|
* MGCP proxy when sccp-lite is used) */
|
|
struct mgcp_client_conf *conf;
|
|
|
|
/* MGW pool, also includes the single MGCP client as fallback if no
|
|
* pool is configured. */
|
|
struct mgcp_client_pool *mgw_pool;
|
|
|
|
/* Timer definitions, the same for all MGW pool members */
|
|
struct osmo_tdef *tdefs;
|
|
} mgw;
|
|
|
|
/* Remote BSS resolution sevice (CTRL iface) */
|
|
struct {
|
|
char *addr;
|
|
uint16_t port;
|
|
struct ctrl_handle *handle;
|
|
} neigh_ctrl;
|
|
|
|
/* Don't refuse to start with mutually exclusive codec settings */
|
|
bool allow_unusable_timeslots;
|
|
|
|
struct bts_setup_ramp_net bts_setup_ramp;
|
|
|
|
uint8_t nri_bitlen;
|
|
struct osmo_nri_ranges *null_nri_ranges;
|
|
|
|
struct smlc_config *smlc;
|
|
|
|
struct chan_counts chan_counts;
|
|
struct all_allocated all_allocated;
|
|
|
|
/* PCU socket state */
|
|
char *pcu_sock_path;
|
|
unsigned int pcu_sock_wqueue_len_max;
|
|
struct pcu_sock_state *pcu_state;
|
|
};
|
|
|
|
struct gsm_audio_support {
|
|
uint8_t hr : 1,
|
|
ver : 7;
|
|
};
|
|
|
|
int gsm_audio_support_cmp(const struct gsm_audio_support *a, const struct gsm_audio_support *b);
|
|
|
|
extern void talloc_ctx_init(void *ctx_root);
|
|
|
|
enum gsm_bts_type parse_btstype(const char *arg);
|
|
const char *btstype2str(enum gsm_bts_type type);
|
|
struct gsm_bts *gsm_bts_by_lac(struct gsm_network *net, unsigned int lac,
|
|
struct gsm_bts *start_bts);
|
|
|
|
extern void *tall_bsc_ctx;
|
|
|
|
extern struct gsm_network *bsc_gsmnet;
|
|
|
|
enum bts_gprs_mode bts_gprs_mode_parse(const char *arg, int *valid);
|
|
const char *bts_gprs_mode_name(enum bts_gprs_mode mode);
|
|
|
|
void gsm48_ra_id_by_bts(struct gsm48_ra_id *buf, struct gsm_bts *bts);
|
|
void gprs_ra_id_by_bts(struct gprs_ra_id *raid, struct gsm_bts *bts);
|
|
|
|
struct gsm_subscriber_connection *bsc_subscr_con_allocate(struct gsm_network *network);
|
|
|
|
struct gsm_bts *gsm_bts_alloc_register(struct gsm_network *net, enum gsm_bts_type type, uint8_t bsic);
|
|
struct gsm_bts *bsc_bts_alloc_register(struct gsm_network *net, enum gsm_bts_type type, uint8_t bsic);
|
|
|
|
void set_ts_e1link(struct gsm_bts_trx_ts *ts, uint8_t e1_nr,
|
|
uint8_t e1_ts, uint8_t e1_ts_ss);
|
|
|
|
/* generic E1 line operations for all ISDN-based BTS. */
|
|
extern struct e1inp_line_ops bts_isdn_e1inp_line_ops;
|
|
|
|
bool ts_is_usable(const struct gsm_bts_trx_ts *ts);
|
|
|
|
int gsm_lchan_type_by_pchan(enum gsm_phys_chan_config pchan);
|
|
enum gsm_phys_chan_config gsm_pchan_by_lchan_type(enum gsm_chan_t type);
|
|
|
|
enum gsm48_rr_cause bsc_gsm48_rr_cause_from_gsm0808_cause(enum gsm0808_cause c);
|
|
enum gsm48_rr_cause bsc_gsm48_rr_cause_from_rsl_cause(uint8_t c);
|
|
|
|
/* Interference Measurement Parameters */
|
|
struct gsm_interf_meas_params {
|
|
/* Intave: Interference Averaging period (see 3GPP TS 45.008, table A.1) */
|
|
uint8_t avg_period; /* number of SACCH multiframes, 1 .. 31 */
|
|
/* Interference level Boundaries (see 3GPP TS 52.021, section 9.4.25) */
|
|
uint8_t bounds_dbm[6]; /* -x dBm values for boundaries 0 .. X5 */
|
|
};
|
|
|
|
extern const struct gsm_interf_meas_params interf_meas_params_def;
|
|
|
|
enum rsl_cmod_spd chan_mode_to_rsl_cmod_spd(enum gsm48_chan_mode chan_mode);
|
|
|
|
int select_best_cipher(uint8_t msc_mask, uint8_t bsc_mask);
|
|
|
|
#endif /* _GSM_DATA_H */
|