| /* (C) 2008-2018 by Harald Welte <laforge@gnumonks.org> |
| * |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <stdbool.h> |
| #include <netinet/in.h> |
| #include <talloc.h> |
| |
| #include <osmocom/core/linuxlist.h> |
| #include <osmocom/core/byteswap.h> |
| #include <osmocom/gsm/gsm_utils.h> |
| #include <osmocom/gsm/abis_nm.h> |
| #include <osmocom/core/statistics.h> |
| #include <osmocom/gsm/protocol/gsm_04_08.h> |
| #include <osmocom/gsm/gsm48.h> |
| #include <osmocom/gsm/gsm0808_utils.h> |
| |
| #include <osmocom/bsc/gsm_data.h> |
| #include <osmocom/bsc/bsc_msc_data.h> |
| #include <osmocom/bsc/abis_nm.h> |
| #include <osmocom/bsc/handover_cfg.h> |
| #include <osmocom/bsc/gsm_timers.h> |
| #include <osmocom/bsc/timeslot_fsm.h> |
| #include <osmocom/bsc/lchan_fsm.h> |
| #include <osmocom/bsc/mgw_endpoint_fsm.h> |
| |
| void *tall_bsc_ctx = NULL; |
| |
| const struct value_string bsc_lcls_mode_names[] = { |
| { BSC_LCLS_MODE_DISABLED, "disabled" }, |
| { BSC_LCLS_MODE_MGW_LOOP, "mgw-loop" }, |
| { BSC_LCLS_MODE_BTS_LOOP, "bts-loop" }, |
| { 0, NULL } |
| }; |
| |
| static LLIST_HEAD(bts_models); |
| |
| void set_ts_e1link(struct gsm_bts_trx_ts *ts, uint8_t e1_nr, |
| uint8_t e1_ts, uint8_t e1_ts_ss) |
| { |
| ts->e1_link.e1_nr = e1_nr; |
| ts->e1_link.e1_ts = e1_ts; |
| ts->e1_link.e1_ts_ss = e1_ts_ss; |
| } |
| |
| static struct gsm_bts_model *bts_model_find(enum gsm_bts_type type) |
| { |
| struct gsm_bts_model *model; |
| |
| llist_for_each_entry(model, &bts_models, list) { |
| if (model->type == type) |
| return model; |
| } |
| |
| return NULL; |
| } |
| |
| int gsm_bts_model_register(struct gsm_bts_model *model) |
| { |
| if (bts_model_find(model->type)) |
| return -EEXIST; |
| |
| tlv_def_patch(&model->nm_att_tlvdef, &abis_nm_att_tlvdef); |
| llist_add_tail(&model->list, &bts_models); |
| return 0; |
| } |
| |
| const struct value_string bts_type_descs[_NUM_GSM_BTS_TYPE+1] = { |
| { GSM_BTS_TYPE_UNKNOWN, "Unknown BTS Type" }, |
| { GSM_BTS_TYPE_BS11, "Siemens BTS (BS-11 or compatible)" }, |
| { GSM_BTS_TYPE_NANOBTS, "ip.access nanoBTS or compatible" }, |
| { GSM_BTS_TYPE_RBS2000, "Ericsson RBS2000 Series" }, |
| { GSM_BTS_TYPE_NOKIA_SITE, "Nokia {Metro,Ultra,In}Site" }, |
| { GSM_BTS_TYPE_OSMOBTS, "sysmocom sysmoBTS" }, |
| { 0, NULL } |
| }; |
| |
| struct gsm_bts_trx *gsm_bts_trx_by_nr(struct gsm_bts *bts, int nr) |
| { |
| struct gsm_bts_trx *trx; |
| |
| llist_for_each_entry(trx, &bts->trx_list, list) { |
| if (trx->nr == nr) |
| return trx; |
| } |
| return NULL; |
| } |
| |
| /* Search for a BTS in the given Location Area; optionally start searching |
| * with start_bts (for continuing to search after the first result) */ |
| struct gsm_bts *gsm_bts_by_lac(struct gsm_network *net, unsigned int lac, |
| struct gsm_bts *start_bts) |
| { |
| int i; |
| struct gsm_bts *bts; |
| int skip = 0; |
| |
| if (start_bts) |
| skip = 1; |
| |
| for (i = 0; i < net->num_bts; i++) { |
| bts = gsm_bts_num(net, i); |
| |
| if (skip) { |
| if (start_bts == bts) |
| skip = 0; |
| continue; |
| } |
| |
| if (lac == GSM_LAC_RESERVED_ALL_BTS || bts->location_area_code == lac) |
| return bts; |
| } |
| return NULL; |
| } |
| |
| static const struct value_string bts_gprs_mode_names[] = { |
| { BTS_GPRS_NONE, "none" }, |
| { BTS_GPRS_GPRS, "gprs" }, |
| { BTS_GPRS_EGPRS, "egprs" }, |
| { 0, NULL } |
| }; |
| |
| enum bts_gprs_mode bts_gprs_mode_parse(const char *arg, int *valid) |
| { |
| int rc; |
| |
| rc = get_string_value(bts_gprs_mode_names, arg); |
| if (valid) |
| *valid = rc != -EINVAL; |
| return rc; |
| } |
| |
| const char *bts_gprs_mode_name(enum bts_gprs_mode mode) |
| { |
| return get_value_string(bts_gprs_mode_names, mode); |
| } |
| |
| int bts_gprs_mode_is_compat(struct gsm_bts *bts, enum bts_gprs_mode mode) |
| { |
| if (mode != BTS_GPRS_NONE && |
| !osmo_bts_has_feature(&bts->model->features, BTS_FEAT_GPRS)) { |
| return 0; |
| } |
| if (mode == BTS_GPRS_EGPRS && |
| !osmo_bts_has_feature(&bts->model->features, BTS_FEAT_EGPRS)) { |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| int gsm_set_bts_type(struct gsm_bts *bts, enum gsm_bts_type type) |
| { |
| struct gsm_bts_model *model; |
| |
| model = bts_model_find(type); |
| if (!model) |
| return -EINVAL; |
| |
| bts->type = type; |
| bts->model = model; |
| |
| if (model->start && !model->started) { |
| int ret = model->start(bts->network); |
| if (ret < 0) |
| return ret; |
| |
| model->started = true; |
| } |
| |
| switch (bts->type) { |
| case GSM_BTS_TYPE_NANOBTS: |
| case GSM_BTS_TYPE_OSMOBTS: |
| /* Set the default OML Stream ID to 0xff */ |
| bts->oml_tei = 0xff; |
| bts->c0->nominal_power = 23; |
| break; |
| case GSM_BTS_TYPE_RBS2000: |
| INIT_LLIST_HEAD(&bts->rbs2000.is.conn_groups); |
| INIT_LLIST_HEAD(&bts->rbs2000.con.conn_groups); |
| break; |
| case GSM_BTS_TYPE_BS11: |
| case GSM_BTS_TYPE_UNKNOWN: |
| case GSM_BTS_TYPE_NOKIA_SITE: |
| /* Set default BTS reset timer */ |
| bts->nokia.bts_reset_timer_cnf = 15; |
| case _NUM_GSM_BTS_TYPE: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| struct gsm_bts *gsm_bts_alloc_register(struct gsm_network *net, enum gsm_bts_type type, |
| uint8_t bsic) |
| { |
| struct gsm_bts_model *model = bts_model_find(type); |
| struct gsm_bts *bts; |
| |
| if (!model && type != GSM_BTS_TYPE_UNKNOWN) |
| return NULL; |
| |
| bts = gsm_bts_alloc(net, net->num_bts); |
| if (!bts) |
| return NULL; |
| |
| net->num_bts++; |
| |
| bts->type = type; |
| bts->model = model; |
| bts->bsic = bsic; |
| |
| llist_add_tail(&bts->list, &net->bts_list); |
| |
| return bts; |
| } |
| |
| void gprs_ra_id_by_bts(struct gprs_ra_id *raid, struct gsm_bts *bts) |
| { |
| *raid = (struct gprs_ra_id){ |
| .mcc = bts->network->plmn.mcc, |
| .mnc = bts->network->plmn.mnc, |
| .mnc_3_digits = bts->network->plmn.mnc_3_digits, |
| .lac = bts->location_area_code, |
| .rac = bts->gprs.rac, |
| }; |
| } |
| |
| void gsm48_ra_id_by_bts(struct gsm48_ra_id *buf, struct gsm_bts *bts) |
| { |
| struct gprs_ra_id raid; |
| |
| gprs_ra_id_by_bts(&raid, bts); |
| gsm48_encode_ra(buf, &raid); |
| } |
| |
| int gsm_parse_reg(void *ctx, regex_t *reg, char **str, int argc, const char **argv) |
| { |
| int ret; |
| |
| ret = 0; |
| if (*str) { |
| talloc_free(*str); |
| *str = NULL; |
| } |
| regfree(reg); |
| |
| if (argc > 0) { |
| *str = talloc_strdup(ctx, argv[0]); |
| ret = regcomp(reg, argv[0], 0); |
| |
| /* handle compilation failures */ |
| if (ret != 0) { |
| talloc_free(*str); |
| *str = NULL; |
| } |
| } |
| |
| return ret; |
| } |
| |
| /* Assume there are only 256 possible bts */ |
| osmo_static_assert(sizeof(((struct gsm_bts *) 0)->nr) == 1, _bts_nr_is_256); |
| static void depends_calc_index_bit(int bts_nr, int *idx, int *bit) |
| { |
| *idx = bts_nr / (8 * 4); |
| *bit = bts_nr % (8 * 4); |
| } |
| |
| void bts_depend_mark(struct gsm_bts *bts, int dep) |
| { |
| int idx, bit; |
| depends_calc_index_bit(dep, &idx, &bit); |
| |
| bts->depends_on[idx] |= 1 << bit; |
| } |
| |
| void bts_depend_clear(struct gsm_bts *bts, int dep) |
| { |
| int idx, bit; |
| depends_calc_index_bit(dep, &idx, &bit); |
| |
| bts->depends_on[idx] &= ~(1 << bit); |
| } |
| |
| int bts_depend_is_depedency(struct gsm_bts *base, struct gsm_bts *other) |
| { |
| int idx, bit; |
| depends_calc_index_bit(other->nr, &idx, &bit); |
| |
| /* Check if there is a depends bit */ |
| return (base->depends_on[idx] & (1 << bit)) > 0; |
| } |
| |
| static int bts_is_online(struct gsm_bts *bts) |
| { |
| /* TODO: support E1 BTS too */ |
| if (!is_ipaccess_bts(bts)) |
| return 1; |
| |
| if (!bts->oml_link) |
| return 0; |
| |
| return bts->mo.nm_state.operational == NM_OPSTATE_ENABLED; |
| } |
| |
| int bts_depend_check(struct gsm_bts *bts) |
| { |
| struct gsm_bts *other_bts; |
| |
| llist_for_each_entry(other_bts, &bts->network->bts_list, list) { |
| if (!bts_depend_is_depedency(bts, other_bts)) |
| continue; |
| if (bts_is_online(other_bts)) |
| continue; |
| return 0; |
| } |
| return 1; |
| } |
| |
| /* get the radio link timeout (based on SACCH decode errors, according |
| * to algorithm specified in TS 05.08 section 5.2. A value of -1 |
| * indicates we should use an infinitely long timeout, which only works |
| * with OsmoBTS as the BTS implementation */ |
| int gsm_bts_get_radio_link_timeout(const struct gsm_bts *bts) |
| { |
| const struct gsm48_cell_options *cell_options = &bts->si_common.cell_options; |
| |
| if (bts->infinite_radio_link_timeout) |
| return -1; |
| else { |
| /* Encoding as per Table 10.5.21 of TS 04.08 */ |
| return (cell_options->radio_link_timeout + 1) << 2; |
| } |
| } |
| |
| /* set the radio link timeout (based on SACCH decode errors, according |
| * to algorithm specified in TS 05.08 Section 5.2. A value of -1 |
| * indicates we should use an infinitely long timeout, which only works |
| * with OsmoBTS as the BTS implementation */ |
| void gsm_bts_set_radio_link_timeout(struct gsm_bts *bts, int value) |
| { |
| struct gsm48_cell_options *cell_options = &bts->si_common.cell_options; |
| |
| if (value < 0) |
| bts->infinite_radio_link_timeout = true; |
| else { |
| bts->infinite_radio_link_timeout = false; |
| /* Encoding as per Table 10.5.21 of TS 04.08 */ |
| if (value < 4) |
| value = 4; |
| if (value > 64) |
| value = 64; |
| cell_options->radio_link_timeout = (value >> 2) - 1; |
| } |
| } |
| |
| bool classmark_is_r99(struct gsm_classmark *cm) |
| { |
| int rev_lev = 0; |
| if (cm->classmark1_set) |
| rev_lev = cm->classmark1.rev_lev; |
| else if (cm->classmark2_len > 0) |
| rev_lev = (cm->classmark2[0] >> 5) & 0x3; |
| return rev_lev >= 2; |
| } |
| |
| static const struct osmo_stat_item_desc bts_stat_desc[] = { |
| { "chanloadavg", "Channel load average.", "%", 16, 0 }, |
| { "T3122", "T3122 IMMEDIATE ASSIGNMENT REJECT wait indicator.", "s", 16, GSM_T3122_DEFAULT }, |
| }; |
| |
| static const struct osmo_stat_item_group_desc bts_statg_desc = { |
| .group_name_prefix = "bts", |
| .group_description = "base transceiver station", |
| .class_id = OSMO_STATS_CLASS_GLOBAL, |
| .num_items = ARRAY_SIZE(bts_stat_desc), |
| .item_desc = bts_stat_desc, |
| }; |
| |
| void gsm_abis_mo_reset(struct gsm_abis_mo *mo) |
| { |
| mo->nm_state.operational = NM_OPSTATE_NULL; |
| mo->nm_state.availability = NM_AVSTATE_POWER_OFF; |
| } |
| |
| static 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) |
| { |
| mo->bts = bts; |
| mo->obj_class = obj_class; |
| mo->obj_inst.bts_nr = p1; |
| mo->obj_inst.trx_nr = p2; |
| mo->obj_inst.ts_nr = p3; |
| gsm_abis_mo_reset(mo); |
| } |
| |
| const struct value_string bts_attribute_names[] = { |
| OSMO_VALUE_STRING(BTS_TYPE_VARIANT), |
| OSMO_VALUE_STRING(BTS_SUB_MODEL), |
| OSMO_VALUE_STRING(TRX_PHY_VERSION), |
| { 0, NULL } |
| }; |
| |
| enum bts_attribute str2btsattr(const char *s) |
| { |
| return get_string_value(bts_attribute_names, s); |
| } |
| |
| const char *btsatttr2str(enum bts_attribute v) |
| { |
| return get_value_string(bts_attribute_names, v); |
| } |
| |
| const struct value_string osmo_bts_variant_names[_NUM_BTS_VARIANT + 1] = { |
| { BTS_UNKNOWN, "unknown" }, |
| { BTS_OSMO_LITECELL15, "osmo-bts-lc15" }, |
| { BTS_OSMO_OCTPHY, "osmo-bts-octphy" }, |
| { BTS_OSMO_SYSMO, "osmo-bts-sysmo" }, |
| { BTS_OSMO_TRX, "omso-bts-trx" }, |
| { 0, NULL } |
| }; |
| |
| enum gsm_bts_type_variant str2btsvariant(const char *arg) |
| { |
| return get_string_value(osmo_bts_variant_names, arg); |
| } |
| |
| const char *btsvariant2str(enum gsm_bts_type_variant v) |
| { |
| return get_value_string(osmo_bts_variant_names, v); |
| } |
| |
| const struct value_string bts_type_names[_NUM_GSM_BTS_TYPE + 1] = { |
| { GSM_BTS_TYPE_UNKNOWN, "unknown" }, |
| { GSM_BTS_TYPE_BS11, "bs11" }, |
| { GSM_BTS_TYPE_NANOBTS, "nanobts" }, |
| { GSM_BTS_TYPE_RBS2000, "rbs2000" }, |
| { GSM_BTS_TYPE_NOKIA_SITE, "nokia_site" }, |
| { GSM_BTS_TYPE_OSMOBTS, "sysmobts" }, |
| { 0, NULL } |
| }; |
| |
| enum gsm_bts_type str2btstype(const char *arg) |
| { |
| return get_string_value(bts_type_names, arg); |
| } |
| |
| const char *btstype2str(enum gsm_bts_type type) |
| { |
| return get_value_string(bts_type_names, type); |
| } |
| |
| const struct value_string gsm_chreq_descs[] = { |
| { GSM_CHREQ_REASON_EMERG, "emergency call" }, |
| { GSM_CHREQ_REASON_PAG, "answer to paging" }, |
| { GSM_CHREQ_REASON_CALL, "call re-establishment" }, |
| { GSM_CHREQ_REASON_LOCATION_UPD,"Location updating" }, |
| { GSM_CHREQ_REASON_PDCH, "one phase packet access" }, |
| { GSM_CHREQ_REASON_OTHER, "other" }, |
| { 0, NULL } |
| }; |
| |
| const struct value_string gsm_pchant_names[] = { |
| { GSM_PCHAN_NONE, "NONE" }, |
| { GSM_PCHAN_CCCH, "CCCH" }, |
| { GSM_PCHAN_CCCH_SDCCH4,"CCCH+SDCCH4" }, |
| { GSM_PCHAN_TCH_F, "TCH/F" }, |
| { GSM_PCHAN_TCH_H, "TCH/H" }, |
| { GSM_PCHAN_SDCCH8_SACCH8C, "SDCCH8" }, |
| { GSM_PCHAN_PDCH, "PDCH" }, |
| { GSM_PCHAN_TCH_F_PDCH, "TCH/F_PDCH" }, |
| { GSM_PCHAN_UNKNOWN, "UNKNOWN" }, |
| { GSM_PCHAN_CCCH_SDCCH4_CBCH, "CCCH+SDCCH4+CBCH" }, |
| { GSM_PCHAN_SDCCH8_SACCH8C_CBCH, "SDCCH8+CBCH" }, |
| { GSM_PCHAN_TCH_F_TCH_H_PDCH, "TCH/F_TCH/H_PDCH" }, |
| { 0, NULL } |
| }; |
| |
| const struct value_string gsm_pchan_ids[] = { |
| { GSM_PCHAN_NONE, "NONE" }, |
| { GSM_PCHAN_CCCH, "CCCH" }, |
| { GSM_PCHAN_CCCH_SDCCH4,"CCCH_SDCCH4" }, |
| { GSM_PCHAN_TCH_F, "TCH_F" }, |
| { GSM_PCHAN_TCH_H, "TCH_H" }, |
| { GSM_PCHAN_SDCCH8_SACCH8C, "SDCCH8" }, |
| { GSM_PCHAN_PDCH, "PDCH" }, |
| { GSM_PCHAN_TCH_F_PDCH, "TCH_F_PDCH" }, |
| { GSM_PCHAN_UNKNOWN, "UNKNOWN" }, |
| { GSM_PCHAN_CCCH_SDCCH4_CBCH, "CCCH_SDCCH4_CBCH" }, |
| { GSM_PCHAN_SDCCH8_SACCH8C_CBCH, "SDCCH8_CBCH" }, |
| { GSM_PCHAN_TCH_F_TCH_H_PDCH, "TCH_F_TCH_H_PDCH" }, |
| { 0, NULL } |
| }; |
| |
| const struct value_string gsm_pchant_descs[13] = { |
| { GSM_PCHAN_NONE, "Physical Channel not configured" }, |
| { GSM_PCHAN_CCCH, "FCCH + SCH + BCCH + CCCH (Comb. IV)" }, |
| { GSM_PCHAN_CCCH_SDCCH4, |
| "FCCH + SCH + BCCH + CCCH + 4 SDCCH + 2 SACCH (Comb. V)" }, |
| { GSM_PCHAN_TCH_F, "TCH/F + FACCH/F + SACCH (Comb. I)" }, |
| { GSM_PCHAN_TCH_H, "2 TCH/H + 2 FACCH/H + 2 SACCH (Comb. II)" }, |
| { GSM_PCHAN_SDCCH8_SACCH8C, "8 SDCCH + 4 SACCH (Comb. VII)" }, |
| { GSM_PCHAN_PDCH, "Packet Data Channel for GPRS/EDGE" }, |
| { GSM_PCHAN_TCH_F_PDCH, "Dynamic TCH/F or GPRS PDCH" }, |
| { GSM_PCHAN_UNKNOWN, "Unknown / Unsupported channel combination" }, |
| { GSM_PCHAN_CCCH_SDCCH4_CBCH, "FCCH + SCH + BCCH + CCCH + CBCH + 3 SDCCH + 2 SACCH (Comb. V)" }, |
| { GSM_PCHAN_SDCCH8_SACCH8C_CBCH, "7 SDCCH + 4 SACCH + CBCH (Comb. VII)" }, |
| { GSM_PCHAN_TCH_F_TCH_H_PDCH, "Dynamic TCH/F or TCH/H or GPRS PDCH" }, |
| { 0, NULL } |
| }; |
| |
| const char *gsm_pchan_name(enum gsm_phys_chan_config c) |
| { |
| return get_value_string(gsm_pchant_names, c); |
| } |
| |
| enum gsm_phys_chan_config gsm_pchan_parse(const char *name) |
| { |
| return get_string_value(gsm_pchant_names, name); |
| } |
| |
| /* TODO: move to libosmocore, next to gsm_chan_t_names? */ |
| const char *gsm_lchant_name(enum gsm_chan_t c) |
| { |
| return get_value_string(gsm_chan_t_names, c); |
| } |
| |
| static const struct value_string chreq_names[] = { |
| { GSM_CHREQ_REASON_EMERG, "EMERGENCY" }, |
| { GSM_CHREQ_REASON_PAG, "PAGING" }, |
| { GSM_CHREQ_REASON_CALL, "CALL" }, |
| { GSM_CHREQ_REASON_LOCATION_UPD,"LOCATION_UPDATE" }, |
| { GSM_CHREQ_REASON_OTHER, "OTHER" }, |
| { 0, NULL } |
| }; |
| |
| const char *gsm_chreq_name(enum gsm_chreq_reason_t c) |
| { |
| return get_value_string(chreq_names, c); |
| } |
| |
| struct gsm_bts *gsm_bts_num(const struct gsm_network *net, int num) |
| { |
| struct gsm_bts *bts; |
| |
| if (num >= net->num_bts) |
| return NULL; |
| |
| llist_for_each_entry(bts, &net->bts_list, list) { |
| if (bts->nr == num) |
| return bts; |
| } |
| |
| return NULL; |
| } |
| |
| bool gsm_bts_matches_lai(const struct gsm_bts *bts, const struct osmo_location_area_id *lai) |
| { |
| return osmo_plmn_cmp(&lai->plmn, &bts->network->plmn) == 0 |
| && lai->lac == bts->location_area_code; |
| } |
| |
| bool gsm_bts_matches_cell_id(const struct gsm_bts *bts, const struct gsm0808_cell_id *cell_id) |
| { |
| const union gsm0808_cell_id_u *id = &cell_id->id; |
| if (!bts || !cell_id) |
| return false; |
| |
| switch (cell_id->id_discr) { |
| case CELL_IDENT_WHOLE_GLOBAL: |
| return gsm_bts_matches_lai(bts, &id->global.lai) |
| && id->global.cell_identity == bts->cell_identity; |
| case CELL_IDENT_LAC_AND_CI: |
| return id->lac_and_ci.lac == bts->location_area_code |
| && id->lac_and_ci.ci == bts->cell_identity; |
| case CELL_IDENT_CI: |
| return id->ci == bts->cell_identity; |
| case CELL_IDENT_NO_CELL: |
| return false; |
| case CELL_IDENT_LAI_AND_LAC: |
| return gsm_bts_matches_lai(bts, &id->lai_and_lac); |
| case CELL_IDENT_LAC: |
| return id->lac == bts->location_area_code; |
| case CELL_IDENT_BSS: |
| return true; |
| case CELL_IDENT_UTRAN_PLMN_LAC_RNC: |
| case CELL_IDENT_UTRAN_RNC: |
| case CELL_IDENT_UTRAN_LAC_RNC: |
| return false; |
| default: |
| OSMO_ASSERT(false); |
| } |
| } |
| |
| /* From a list of local BTSes that match the cell_id, return the Nth one, or NULL if there is no such |
| * match. */ |
| struct gsm_bts *gsm_bts_by_cell_id(const struct gsm_network *net, |
| const struct gsm0808_cell_id *cell_id, |
| int match_idx) |
| { |
| struct gsm_bts *bts; |
| int i = 0; |
| llist_for_each_entry(bts, &net->bts_list, list) { |
| if (!gsm_bts_matches_cell_id(bts, cell_id)) |
| continue; |
| if (i < match_idx) { |
| /* this is only the i'th match, we're looking for a later one... */ |
| i++; |
| continue; |
| } |
| return bts; |
| } |
| return NULL; |
| } |
| |
| struct gsm_bts_ref *gsm_bts_ref_find(const struct llist_head *list, const struct gsm_bts *bts) |
| { |
| struct gsm_bts_ref *ref; |
| if (!bts) |
| return NULL; |
| llist_for_each_entry(ref, list, entry) { |
| if (ref->bts == bts) |
| return ref; |
| } |
| return NULL; |
| } |
| |
| /* Add a BTS reference to the local_neighbors list. |
| * Return 1 if added, 0 if such an entry already existed, and negative on errors. */ |
| int gsm_bts_local_neighbor_add(struct gsm_bts *bts, struct gsm_bts *neighbor) |
| { |
| struct gsm_bts_ref *ref; |
| if (!bts || !neighbor) |
| return -ENOMEM; |
| |
| if (bts == neighbor) |
| return -EINVAL; |
| |
| /* Already got this entry? */ |
| ref = gsm_bts_ref_find(&bts->local_neighbors, neighbor); |
| if (ref) |
| return 0; |
| |
| ref = talloc_zero(bts, struct gsm_bts_ref); |
| if (!ref) |
| return -ENOMEM; |
| ref->bts = neighbor; |
| llist_add_tail(&ref->entry, &bts->local_neighbors); |
| return 1; |
| } |
| |
| /* Remove a BTS reference from the local_neighbors list. |
| * Return 1 if removed, 0 if no such entry existed, and negative on errors. */ |
| int gsm_bts_local_neighbor_del(struct gsm_bts *bts, const struct gsm_bts *neighbor) |
| { |
| struct gsm_bts_ref *ref; |
| if (!bts || !neighbor) |
| return -ENOMEM; |
| |
| ref = gsm_bts_ref_find(&bts->local_neighbors, neighbor); |
| if (!ref) |
| return 0; |
| |
| llist_del(&ref->entry); |
| talloc_free(ref); |
| return 1; |
| } |
| |
| struct gsm_bts_trx *gsm_bts_trx_alloc(struct gsm_bts *bts) |
| { |
| struct gsm_bts_trx *trx = talloc_zero(bts, struct gsm_bts_trx); |
| int k; |
| |
| if (!trx) |
| return NULL; |
| |
| trx->bts = bts; |
| trx->nr = bts->num_trx++; |
| trx->mo.nm_state.administrative = NM_STATE_UNLOCKED; |
| |
| gsm_mo_init(&trx->mo, bts, NM_OC_RADIO_CARRIER, |
| bts->nr, trx->nr, 0xff); |
| gsm_mo_init(&trx->bb_transc.mo, bts, NM_OC_BASEB_TRANSC, |
| bts->nr, trx->nr, 0xff); |
| |
| for (k = 0; k < TRX_NR_TS; k++) { |
| struct gsm_bts_trx_ts *ts = &trx->ts[k]; |
| int l; |
| |
| |
| ts->trx = trx; |
| ts->nr = k; |
| ts->pchan_from_config = ts->pchan_on_init = ts->pchan_is = GSM_PCHAN_NONE; |
| ts->tsc = -1; |
| |
| ts_fsm_alloc(ts); |
| |
| gsm_mo_init(&ts->mo, bts, NM_OC_CHANNEL, |
| bts->nr, trx->nr, ts->nr); |
| |
| ts->hopping.arfcns.data_len = sizeof(ts->hopping.arfcns_data); |
| ts->hopping.arfcns.data = ts->hopping.arfcns_data; |
| ts->hopping.ma.data_len = sizeof(ts->hopping.ma_data); |
| ts->hopping.ma.data = ts->hopping.ma_data; |
| |
| for (l = 0; l < TS_MAX_LCHAN; l++) { |
| struct gsm_lchan *lchan; |
| char *name; |
| lchan = &ts->lchan[l]; |
| |
| lchan->ts = ts; |
| lchan->nr = l; |
| lchan->type = GSM_LCHAN_NONE; |
| |
| name = gsm_lchan_name_compute(lchan); |
| lchan->name = talloc_strdup(trx, name); |
| } |
| } |
| |
| if (trx->nr != 0) |
| trx->nominal_power = bts->c0->nominal_power; |
| |
| llist_add_tail(&trx->list, &bts->trx_list); |
| |
| return trx; |
| } |
| |
| |
| static const uint8_t bts_nse_timer_default[] = { 3, 3, 3, 3, 30, 3, 10 }; |
| static const uint8_t bts_cell_timer_default[] = |
| { 3, 3, 3, 3, 3, 10, 3, 10, 3, 10, 3 }; |
| static const struct gprs_rlc_cfg rlc_cfg_default = { |
| .parameter = { |
| [RLC_T3142] = 20, |
| [RLC_T3169] = 5, |
| [RLC_T3191] = 5, |
| [RLC_T3193] = 160, /* 10ms */ |
| [RLC_T3195] = 5, |
| [RLC_N3101] = 10, |
| [RLC_N3103] = 4, |
| [RLC_N3105] = 8, |
| [CV_COUNTDOWN] = 15, |
| [T_DL_TBF_EXT] = 250 * 10, /* ms */ |
| [T_UL_TBF_EXT] = 250 * 10, /* ms */ |
| }, |
| .paging = { |
| .repeat_time = 5 * 50, /* ms */ |
| .repeat_count = 3, |
| }, |
| .cs_mask = 0x1fff, |
| .initial_cs = 2, |
| .initial_mcs = 6, |
| }; |
| |
| /* Initialize those parts that don't require osmo-bsc specific dependencies. |
| * This part is shared among the thin programs in osmo-bsc/src/utils/. |
| * osmo-bsc requires further initialization that pulls in more dependencies (see |
| * bsc_bts_alloc_register()). */ |
| struct gsm_bts *gsm_bts_alloc(struct gsm_network *net, uint8_t bts_num) |
| { |
| struct gsm_bts *bts = talloc_zero(net, struct gsm_bts); |
| struct gsm48_multi_rate_conf mr_cfg; |
| int i; |
| |
| if (!bts) |
| return NULL; |
| |
| bts->nr = bts_num; |
| bts->num_trx = 0; |
| INIT_LLIST_HEAD(&bts->trx_list); |
| bts->network = net; |
| |
| bts->ms_max_power = 15; /* dBm */ |
| |
| gsm_mo_init(&bts->mo, bts, NM_OC_BTS, |
| bts->nr, 0xff, 0xff); |
| gsm_mo_init(&bts->site_mgr.mo, bts, NM_OC_SITE_MANAGER, |
| 0xff, 0xff, 0xff); |
| |
| for (i = 0; i < ARRAY_SIZE(bts->gprs.nsvc); i++) { |
| bts->gprs.nsvc[i].bts = bts; |
| bts->gprs.nsvc[i].id = i; |
| gsm_mo_init(&bts->gprs.nsvc[i].mo, bts, NM_OC_GPRS_NSVC, |
| bts->nr, i, 0xff); |
| } |
| memcpy(&bts->gprs.nse.timer, bts_nse_timer_default, |
| sizeof(bts->gprs.nse.timer)); |
| gsm_mo_init(&bts->gprs.nse.mo, bts, NM_OC_GPRS_NSE, |
| bts->nr, 0xff, 0xff); |
| memcpy(&bts->gprs.cell.timer, bts_cell_timer_default, |
| sizeof(bts->gprs.cell.timer)); |
| gsm_mo_init(&bts->gprs.cell.mo, bts, NM_OC_GPRS_CELL, |
| bts->nr, 0xff, 0xff); |
| memcpy(&bts->gprs.cell.rlc_cfg, &rlc_cfg_default, |
| sizeof(bts->gprs.cell.rlc_cfg)); |
| |
| /* init statistics */ |
| bts->bts_ctrs = rate_ctr_group_alloc(bts, &bts_ctrg_desc, bts->nr); |
| if (!bts->bts_ctrs) { |
| talloc_free(bts); |
| return NULL; |
| } |
| bts->bts_statg = osmo_stat_item_group_alloc(bts, &bts_statg_desc, 0); |
| |
| /* create our primary TRX */ |
| bts->c0 = gsm_bts_trx_alloc(bts); |
| if (!bts->c0) { |
| rate_ctr_group_free(bts->bts_ctrs); |
| osmo_stat_item_group_free(bts->bts_statg); |
| talloc_free(bts); |
| return NULL; |
| } |
| bts->c0->ts[0].pchan_from_config = GSM_PCHAN_CCCH_SDCCH4; /* TODO: really?? */ |
| |
| bts->rach_b_thresh = -1; |
| bts->rach_ldavg_slots = -1; |
| |
| bts->paging.free_chans_need = -1; |
| INIT_LLIST_HEAD(&bts->paging.pending_requests); |
| |
| bts->features.data = &bts->_features_data[0]; |
| bts->features.data_len = sizeof(bts->_features_data); |
| |
| /* si handling */ |
| bts->bcch_change_mark = 1; |
| bts->chan_load_avg = 0; |
| |
| /* timer overrides */ |
| bts->T3122 = 0; /* not overriden by default */ |
| |
| bts->dtxu = GSM48_DTX_SHALL_NOT_BE_USED; |
| bts->dtxd = false; |
| bts->gprs.ctrl_ack_type_use_block = true; /* use RLC/MAC control block */ |
| bts->neigh_list_manual_mode = NL_MODE_AUTOMATIC; |
| bts->early_classmark_allowed_3g = true; /* 3g Early Classmark Sending controlled by bts->early_classmark_allowed param */ |
| bts->si_common.cell_sel_par.cell_resel_hyst = 2; /* 4 dB */ |
| bts->si_common.cell_sel_par.rxlev_acc_min = 0; |
| bts->si_common.si2quater_neigh_list.arfcn = bts->si_common.data.earfcn_list; |
| bts->si_common.si2quater_neigh_list.meas_bw = bts->si_common.data.meas_bw_list; |
| bts->si_common.si2quater_neigh_list.length = MAX_EARFCN_LIST; |
| bts->si_common.si2quater_neigh_list.thresh_hi = 0; |
| osmo_earfcn_init(&bts->si_common.si2quater_neigh_list); |
| bts->si_common.neigh_list.data = bts->si_common.data.neigh_list; |
| bts->si_common.neigh_list.data_len = |
| sizeof(bts->si_common.data.neigh_list); |
| bts->si_common.si5_neigh_list.data = bts->si_common.data.si5_neigh_list; |
| bts->si_common.si5_neigh_list.data_len = |
| sizeof(bts->si_common.data.si5_neigh_list); |
| bts->si_common.cell_alloc.data = bts->si_common.data.cell_alloc; |
| bts->si_common.cell_alloc.data_len = |
| sizeof(bts->si_common.data.cell_alloc); |
| bts->si_common.rach_control.re = 1; /* no re-establishment */ |
| bts->si_common.rach_control.tx_integer = 9; /* 12 slots spread - 217/115 slots delay */ |
| bts->si_common.rach_control.max_trans = 3; /* 7 retransmissions */ |
| bts->si_common.rach_control.t2 = 4; /* no emergency calls */ |
| bts->si_common.chan_desc.att = 1; /* attachment required */ |
| bts->si_common.chan_desc.bs_pa_mfrms = RSL_BS_PA_MFRMS_5; /* paging frames */ |
| bts->si_common.chan_desc.bs_ag_blks_res = 1; /* reserved AGCH blocks */ |
| bts->si_common.chan_desc.t3212 = T_def_get(net->T_defs, 3212, T_CUSTOM, -1); |
| gsm_bts_set_radio_link_timeout(bts, 32); /* Use RADIO LINK TIMEOUT of 32 */ |
| |
| INIT_LLIST_HEAD(&bts->abis_queue); |
| INIT_LLIST_HEAD(&bts->loc_list); |
| INIT_LLIST_HEAD(&bts->local_neighbors); |
| |
| /* Enable all codecs by default. These get reset to a more fine grained selection IF a |
| * 'codec-support' config appears in the config file (see bsc_vty.c). */ |
| bts->codec = (struct bts_codec_conf){ |
| .hr = 1, |
| .efr = 1, |
| .amr = 1, |
| }; |
| |
| /* Set reasonable defaults for AMR-FR and AMR-HR rate configuration. |
| * It is possible to set up to 4 codecs per active set, while 5,15K must |
| * be selected. */ |
| mr_cfg = (struct gsm48_multi_rate_conf) { |
| .m4_75 = 0, |
| .m5_15 = 1, |
| .m5_90 = 1, |
| .m6_70 = 0, |
| .m7_40 = 0, |
| .m7_95 = 0, |
| .m10_2 = 1, |
| .m12_2 = 1 |
| }; |
| memcpy(bts->mr_full.gsm48_ie, &mr_cfg, sizeof(bts->mr_full.gsm48_ie)); |
| bts->mr_full.ms_mode[0].mode = 1; |
| bts->mr_full.ms_mode[1].mode = 2; |
| bts->mr_full.ms_mode[2].mode = 6; |
| bts->mr_full.ms_mode[3].mode = 7; |
| bts->mr_full.bts_mode[0].mode = 1; |
| bts->mr_full.bts_mode[1].mode = 2; |
| bts->mr_full.bts_mode[2].mode = 6; |
| bts->mr_full.bts_mode[3].mode = 7; |
| for (i = 0; i < 3; i++) { |
| bts->mr_full.ms_mode[i].hysteresis = 8; |
| bts->mr_full.ms_mode[i].threshold = 32; |
| bts->mr_full.bts_mode[i].hysteresis = 8; |
| bts->mr_full.bts_mode[i].threshold = 32; |
| } |
| bts->mr_full.num_modes = 4; |
| |
| mr_cfg = (struct gsm48_multi_rate_conf) { |
| .m4_75 = 0, |
| .m5_15 = 1, |
| .m5_90 = 1, |
| .m6_70 = 0, |
| .m7_40 = 1, |
| .m7_95 = 1, |
| .m10_2 = 0, |
| .m12_2 = 0 |
| }; |
| memcpy(bts->mr_half.gsm48_ie, &mr_cfg, sizeof(bts->mr_half.gsm48_ie)); |
| bts->mr_half.ms_mode[0].mode = 1; |
| bts->mr_half.ms_mode[1].mode = 2; |
| bts->mr_half.ms_mode[2].mode = 4; |
| bts->mr_half.ms_mode[3].mode = 5; |
| bts->mr_half.bts_mode[0].mode = 1; |
| bts->mr_half.bts_mode[1].mode = 2; |
| bts->mr_half.bts_mode[2].mode = 4; |
| bts->mr_half.bts_mode[3].mode = 5; |
| for (i = 0; i < 3; i++) { |
| bts->mr_half.ms_mode[i].hysteresis = 8; |
| bts->mr_half.ms_mode[i].threshold = 32; |
| bts->mr_half.bts_mode[i].hysteresis = 8; |
| bts->mr_half.bts_mode[i].threshold = 32; |
| } |
| bts->mr_half.num_modes = 4; |
| |
| return bts; |
| } |
| |
| /* reset the state of all MO in the BTS */ |
| void gsm_bts_mo_reset(struct gsm_bts *bts) |
| { |
| struct gsm_bts_trx *trx; |
| unsigned int i; |
| |
| gsm_abis_mo_reset(&bts->mo); |
| gsm_abis_mo_reset(&bts->site_mgr.mo); |
| for (i = 0; i < ARRAY_SIZE(bts->gprs.nsvc); i++) |
| gsm_abis_mo_reset(&bts->gprs.nsvc[i].mo); |
| gsm_abis_mo_reset(&bts->gprs.nse.mo); |
| gsm_abis_mo_reset(&bts->gprs.cell.mo); |
| |
| llist_for_each_entry(trx, &bts->trx_list, list) { |
| gsm_abis_mo_reset(&trx->mo); |
| gsm_abis_mo_reset(&trx->bb_transc.mo); |
| |
| for (i = 0; i < ARRAY_SIZE(trx->ts); i++) { |
| struct gsm_bts_trx_ts *ts = &trx->ts[i]; |
| gsm_abis_mo_reset(&ts->mo); |
| } |
| } |
| } |
| |
| struct gsm_bts_trx *gsm_bts_trx_num(const struct gsm_bts *bts, int num) |
| { |
| struct gsm_bts_trx *trx; |
| |
| if (num >= bts->num_trx) |
| return NULL; |
| |
| llist_for_each_entry(trx, &bts->trx_list, list) { |
| if (trx->nr == num) |
| return trx; |
| } |
| |
| return NULL; |
| } |
| |
| static char ts2str[255]; |
| |
| char *gsm_trx_name(const struct gsm_bts_trx *trx) |
| { |
| if (!trx) |
| snprintf(ts2str, sizeof(ts2str), "(trx=NULL)"); |
| else |
| snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d)", |
| trx->bts->nr, trx->nr); |
| |
| return ts2str; |
| } |
| |
| |
| char *gsm_ts_name(const struct gsm_bts_trx_ts *ts) |
| { |
| snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d,ts=%d)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr); |
| |
| return ts2str; |
| } |
| |
| /*! Log timeslot number with full pchan information */ |
| char *gsm_ts_and_pchan_name(const struct gsm_bts_trx_ts *ts) |
| { |
| if (!ts->fi) |
| snprintf(ts2str, sizeof(ts2str), |
| "(bts=%d,trx=%d,ts=%d,pchan_from_config=%s, not allocated)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan_from_config)); |
| else if (ts->fi->state == TS_ST_NOT_INITIALIZED) |
| snprintf(ts2str, sizeof(ts2str), |
| "(bts=%d,trx=%d,ts=%d,pchan_from_config=%s,state=%s)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan_from_config), |
| osmo_fsm_inst_state_name(ts->fi)); |
| else if (ts->pchan_is == ts->pchan_on_init) |
| snprintf(ts2str, sizeof(ts2str), |
| "(bts=%d,trx=%d,ts=%d,pchan=%s,state=%s)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan_is), |
| osmo_fsm_inst_state_name(ts->fi)); |
| else |
| snprintf(ts2str, sizeof(ts2str), |
| "(bts=%d,trx=%d,ts=%d,pchan_on_init=%s,pchan=%s,state=%s)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan_on_init), |
| gsm_pchan_name(ts->pchan_is), |
| osmo_fsm_inst_state_name(ts->fi)); |
| return ts2str; |
| } |
| |
| char *gsm_lchan_name_compute(const struct gsm_lchan *lchan) |
| { |
| struct gsm_bts_trx_ts *ts = lchan->ts; |
| |
| snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d,ts=%d,ss=%d)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, lchan->nr); |
| |
| return ts2str; |
| } |
| |
| /* obtain the MO structure for a given object instance */ |
| static inline struct gsm_abis_mo * |
| gsm_objclass2mo(struct gsm_bts *bts, uint8_t obj_class, |
| const struct abis_om_obj_inst *obj_inst) |
| { |
| struct gsm_bts_trx *trx; |
| struct gsm_abis_mo *mo = NULL; |
| |
| switch (obj_class) { |
| case NM_OC_BTS: |
| mo = &bts->mo; |
| break; |
| case NM_OC_RADIO_CARRIER: |
| if (obj_inst->trx_nr >= bts->num_trx) { |
| return NULL; |
| } |
| trx = gsm_bts_trx_num(bts, obj_inst->trx_nr); |
| mo = &trx->mo; |
| break; |
| case NM_OC_BASEB_TRANSC: |
| if (obj_inst->trx_nr >= bts->num_trx) { |
| return NULL; |
| } |
| trx = gsm_bts_trx_num(bts, obj_inst->trx_nr); |
| mo = &trx->bb_transc.mo; |
| break; |
| case NM_OC_CHANNEL: |
| if (obj_inst->trx_nr >= bts->num_trx) { |
| return NULL; |
| } |
| trx = gsm_bts_trx_num(bts, obj_inst->trx_nr); |
| if (obj_inst->ts_nr >= TRX_NR_TS) |
| return NULL; |
| mo = &trx->ts[obj_inst->ts_nr].mo; |
| break; |
| case NM_OC_SITE_MANAGER: |
| mo = &bts->site_mgr.mo; |
| break; |
| case NM_OC_BS11: |
| switch (obj_inst->bts_nr) { |
| case BS11_OBJ_CCLK: |
| mo = &bts->bs11.cclk.mo; |
| break; |
| case BS11_OBJ_BBSIG: |
| if (obj_inst->ts_nr > bts->num_trx) |
| return NULL; |
| trx = gsm_bts_trx_num(bts, obj_inst->trx_nr); |
| mo = &trx->bs11.bbsig.mo; |
| break; |
| case BS11_OBJ_PA: |
| if (obj_inst->ts_nr > bts->num_trx) |
| return NULL; |
| trx = gsm_bts_trx_num(bts, obj_inst->trx_nr); |
| mo = &trx->bs11.pa.mo; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| case NM_OC_BS11_RACK: |
| mo = &bts->bs11.rack.mo; |
| break; |
| case NM_OC_BS11_ENVABTSE: |
| if (obj_inst->trx_nr >= ARRAY_SIZE(bts->bs11.envabtse)) |
| return NULL; |
| mo = &bts->bs11.envabtse[obj_inst->trx_nr].mo; |
| break; |
| case NM_OC_GPRS_NSE: |
| mo = &bts->gprs.nse.mo; |
| break; |
| case NM_OC_GPRS_CELL: |
| mo = &bts->gprs.cell.mo; |
| break; |
| case NM_OC_GPRS_NSVC: |
| if (obj_inst->trx_nr >= ARRAY_SIZE(bts->gprs.nsvc)) |
| return NULL; |
| mo = &bts->gprs.nsvc[obj_inst->trx_nr].mo; |
| break; |
| } |
| return mo; |
| } |
| |
| /* obtain the gsm_nm_state data structure for a given object instance */ |
| struct gsm_nm_state * |
| gsm_objclass2nmstate(struct gsm_bts *bts, uint8_t obj_class, |
| const struct abis_om_obj_inst *obj_inst) |
| { |
| struct gsm_abis_mo *mo; |
| |
| mo = gsm_objclass2mo(bts, obj_class, obj_inst); |
| if (!mo) |
| return NULL; |
| |
| return &mo->nm_state; |
| } |
| |
| /* obtain the in-memory data structure of a given object instance */ |
| void * |
| gsm_objclass2obj(struct gsm_bts *bts, uint8_t obj_class, |
| const struct abis_om_obj_inst *obj_inst) |
| { |
| struct gsm_bts_trx *trx; |
| void *obj = NULL; |
| |
| switch (obj_class) { |
| case NM_OC_BTS: |
| obj = bts; |
| break; |
| case NM_OC_RADIO_CARRIER: |
| if (obj_inst->trx_nr >= bts->num_trx) { |
| return NULL; |
| } |
| trx = gsm_bts_trx_num(bts, obj_inst->trx_nr); |
| obj = trx; |
| break; |
| case NM_OC_BASEB_TRANSC: |
| if (obj_inst->trx_nr >= bts->num_trx) { |
| return NULL; |
| } |
| trx = gsm_bts_trx_num(bts, obj_inst->trx_nr); |
| obj = &trx->bb_transc; |
| break; |
| case NM_OC_CHANNEL: |
| if (obj_inst->trx_nr >= bts->num_trx) { |
| return NULL; |
| } |
| trx = gsm_bts_trx_num(bts, obj_inst->trx_nr); |
| if (obj_inst->ts_nr >= TRX_NR_TS) |
| return NULL; |
| obj = &trx->ts[obj_inst->ts_nr]; |
| break; |
| case NM_OC_SITE_MANAGER: |
| obj = &bts->site_mgr; |
| break; |
| case NM_OC_GPRS_NSE: |
| obj = &bts->gprs.nse; |
| break; |
| case NM_OC_GPRS_CELL: |
| obj = &bts->gprs.cell; |
| break; |
| case NM_OC_GPRS_NSVC: |
| if (obj_inst->trx_nr >= ARRAY_SIZE(bts->gprs.nsvc)) |
| return NULL; |
| obj = &bts->gprs.nsvc[obj_inst->trx_nr]; |
| break; |
| } |
| return obj; |
| } |
| |
| /* See Table 10.5.25 of GSM04.08 */ |
| uint8_t gsm_pchan2chan_nr(enum gsm_phys_chan_config pchan, |
| uint8_t ts_nr, uint8_t lchan_nr) |
| { |
| uint8_t cbits, chan_nr; |
| |
| switch (pchan) { |
| case GSM_PCHAN_TCH_F: |
| case GSM_PCHAN_TCH_F_PDCH: |
| OSMO_ASSERT(lchan_nr == 0); |
| cbits = 0x01; |
| break; |
| case GSM_PCHAN_PDCH: |
| OSMO_ASSERT(lchan_nr == 0); |
| cbits = RSL_CHAN_OSMO_PDCH >> 3; |
| break; |
| case GSM_PCHAN_TCH_H: |
| OSMO_ASSERT(lchan_nr < 2); |
| cbits = 0x02; |
| cbits += lchan_nr; |
| break; |
| case GSM_PCHAN_CCCH_SDCCH4: |
| case GSM_PCHAN_CCCH_SDCCH4_CBCH: |
| /* |
| * As a special hack for BCCH, lchan_nr == 4 may be passed |
| * here. This should never be sent in an RSL message. |
| * See osmo-bts-xxx/oml.c:opstart_compl(). |
| */ |
| if (lchan_nr == CCCH_LCHAN) |
| chan_nr = 0; |
| else |
| OSMO_ASSERT(lchan_nr < 4); |
| cbits = 0x04; |
| cbits += lchan_nr; |
| break; |
| case GSM_PCHAN_SDCCH8_SACCH8C: |
| case GSM_PCHAN_SDCCH8_SACCH8C_CBCH: |
| OSMO_ASSERT(lchan_nr < 8); |
| cbits = 0x08; |
| cbits += lchan_nr; |
| break; |
| default: |
| case GSM_PCHAN_CCCH: |
| OSMO_ASSERT(lchan_nr == 0); |
| cbits = 0x10; |
| break; |
| } |
| |
| chan_nr = (cbits << 3) | (ts_nr & 0x7); |
| |
| return chan_nr; |
| } |
| |
| uint8_t gsm_lchan2chan_nr(const struct gsm_lchan *lchan) |
| { |
| /* Note: non-standard Osmocom style dyn TS PDCH mode chan_nr is only used within |
| * rsl_tx_dyn_ts_pdch_act_deact(). */ |
| return gsm_pchan2chan_nr(lchan->ts->pchan_is, lchan->ts->nr, lchan->nr); |
| } |
| |
| /* return the gsm_lchan for the CBCH (if it exists at all) */ |
| struct gsm_lchan *gsm_bts_get_cbch(struct gsm_bts *bts) |
| { |
| struct gsm_lchan *lchan = NULL; |
| struct gsm_bts_trx *trx = bts->c0; |
| |
| if (trx->ts[0].pchan_from_config == GSM_PCHAN_CCCH_SDCCH4_CBCH) |
| lchan = &trx->ts[0].lchan[2]; |
| else { |
| int i; |
| for (i = 0; i < 8; i++) { |
| if (trx->ts[i].pchan_from_config == GSM_PCHAN_SDCCH8_SACCH8C_CBCH) { |
| lchan = &trx->ts[i].lchan[2]; |
| break; |
| } |
| } |
| } |
| |
| return lchan; |
| } |
| |
| /* determine logical channel based on TRX and channel number IE */ |
| struct gsm_lchan *rsl_lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr, |
| int *rc) |
| { |
| uint8_t ts_nr = chan_nr & 0x07; |
| uint8_t cbits = chan_nr >> 3; |
| uint8_t lch_idx; |
| struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr]; |
| bool ok; |
| |
| if (rc) |
| *rc = -EINVAL; |
| |
| if (cbits == 0x01) { |
| lch_idx = 0; /* TCH/F */ |
| ok = ts_is_capable_of_pchan(ts, GSM_PCHAN_TCH_F) |
| || ts->pchan_on_init == GSM_PCHAN_PDCH; /* PDCH? really? */ |
| } else if ((cbits & 0x1e) == 0x02) { |
| lch_idx = cbits & 0x1; /* TCH/H */ |
| ok = ts_is_capable_of_pchan(ts, GSM_PCHAN_TCH_H); |
| } else if ((cbits & 0x1c) == 0x04) { |
| lch_idx = cbits & 0x3; /* SDCCH/4 */ |
| ok = ts_is_capable_of_pchan(ts, GSM_PCHAN_CCCH_SDCCH4); |
| } else if ((cbits & 0x18) == 0x08) { |
| lch_idx = cbits & 0x7; /* SDCCH/8 */ |
| ok = ts_is_capable_of_pchan(ts, GSM_PCHAN_SDCCH8_SACCH8C); |
| } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| lch_idx = 0; /* CCCH? */ |
| ok = ts_is_capable_of_pchan(ts, GSM_PCHAN_CCCH); |
| /* FIXME: we should not return first sdcch4 !!! */ |
| } else if ((chan_nr & RSL_CHAN_NR_MASK) == RSL_CHAN_OSMO_PDCH) { |
| lch_idx = 0; |
| ok = (ts->pchan_on_init == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| } else |
| return NULL; |
| |
| if (rc && ok) |
| *rc = 0; |
| |
| return &ts->lchan[lch_idx]; |
| } |
| |
| static const uint8_t subslots_per_pchan[] = { |
| [GSM_PCHAN_NONE] = 0, |
| [GSM_PCHAN_CCCH] = 0, |
| [GSM_PCHAN_PDCH] = 0, |
| [GSM_PCHAN_CCCH_SDCCH4] = 4, |
| [GSM_PCHAN_TCH_F] = 1, |
| [GSM_PCHAN_TCH_H] = 2, |
| [GSM_PCHAN_SDCCH8_SACCH8C] = 8, |
| [GSM_PCHAN_CCCH_SDCCH4_CBCH] = 4, |
| [GSM_PCHAN_SDCCH8_SACCH8C_CBCH] = 8, |
| /* Dyn TS: maximum allowed subslots */ |
| [GSM_PCHAN_TCH_F_TCH_H_PDCH] = 2, |
| [GSM_PCHAN_TCH_F_PDCH] = 1, |
| }; |
| |
| /*! According to ts->pchan and possibly ts->dyn_pchan, return the number of |
| * logical channels available in the timeslot. */ |
| uint8_t pchan_subslots(enum gsm_phys_chan_config pchan) |
| { |
| if (pchan < 0 || pchan >= ARRAY_SIZE(subslots_per_pchan)) |
| return 0; |
| return subslots_per_pchan[pchan]; |
| } |
| |
| static bool pchan_is_tch(enum gsm_phys_chan_config pchan) |
| { |
| switch (pchan) { |
| case GSM_PCHAN_TCH_F: |
| case GSM_PCHAN_TCH_H: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| bool ts_is_tch(struct gsm_bts_trx_ts *ts) |
| { |
| return pchan_is_tch(ts->pchan_is); |
| } |
| |
| bool trx_is_usable(const struct gsm_bts_trx *trx) |
| { |
| /* FIXME: How does this behave for BS-11 ? */ |
| if (is_ipaccess_bts(trx->bts)) { |
| if (!nm_is_running(&trx->mo.nm_state) || |
| !nm_is_running(&trx->bb_transc.mo.nm_state)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void gsm_trx_all_ts_dispatch(struct gsm_bts_trx *trx, uint32_t ts_ev, void *data) |
| { |
| int i; |
| for (i = 0; i < ARRAY_SIZE(trx->ts); i++) { |
| struct gsm_bts_trx_ts *ts = &trx->ts[i]; |
| osmo_fsm_inst_dispatch(ts->fi, ts_ev, data); |
| } |
| } |
| |
| void gsm_bts_all_ts_dispatch(struct gsm_bts *bts, uint32_t ts_ev, void *data) |
| { |
| struct gsm_bts_trx *trx; |
| llist_for_each_entry(trx, &bts->trx_list, list) |
| gsm_trx_all_ts_dispatch(trx, ts_ev, data); |
| } |
| |
| static void _chan_desc_fill_tail(struct gsm48_chan_desc *cd, const struct gsm_lchan *lchan) |
| { |
| if (!lchan->ts->hopping.enabled) { |
| uint16_t arfcn = lchan->ts->trx->arfcn & 0x3ff; |
| cd->h0.tsc = gsm_ts_tsc(lchan->ts); |
| cd->h0.h = 0; |
| cd->h0.arfcn_high = arfcn >> 8; |
| cd->h0.arfcn_low = arfcn & 0xff; |
| } else { |
| cd->h1.tsc = gsm_ts_tsc(lchan->ts); |
| cd->h1.h = 1; |
| cd->h1.maio_high = lchan->ts->hopping.maio >> 2; |
| cd->h1.maio_low = lchan->ts->hopping.maio & 0x03; |
| cd->h1.hsn = lchan->ts->hopping.hsn; |
| } |
| } |
| |
| void gsm48_lchan2chan_desc(struct gsm48_chan_desc *cd, |
| const struct gsm_lchan *lchan) |
| { |
| cd->chan_nr = gsm_lchan2chan_nr(lchan); |
| _chan_desc_fill_tail(cd, lchan); |
| } |
| |
| /* like gsm48_lchan2chan_desc() above, but use ts->pchan_from_config to |
| * return a channel description based on what is configured, rather than |
| * what the current state of the pchan type is */ |
| void gsm48_lchan2chan_desc_as_configured(struct gsm48_chan_desc *cd, |
| const struct gsm_lchan *lchan) |
| { |
| cd->chan_nr = gsm_pchan2chan_nr(lchan->ts->pchan_from_config, lchan->ts->nr, lchan->nr); |
| _chan_desc_fill_tail(cd, lchan); |
| } |
| |
| bool nm_is_running(const struct gsm_nm_state *s) { |
| return (s->operational == NM_OPSTATE_ENABLED) && ( |
| (s->availability == NM_AVSTATE_OK) || |
| (s->availability == 0xff) |
| ); |
| } |
| |
| /* determine the logical channel type based on the physical channel type */ |
| int gsm_lchan_type_by_pchan(enum gsm_phys_chan_config pchan) |
| { |
| switch (pchan) { |
| case GSM_PCHAN_TCH_F: |
| return GSM_LCHAN_TCH_F; |
| case GSM_PCHAN_TCH_H: |
| return GSM_LCHAN_TCH_H; |
| case GSM_PCHAN_SDCCH8_SACCH8C: |
| case GSM_PCHAN_SDCCH8_SACCH8C_CBCH: |
| case GSM_PCHAN_CCCH_SDCCH4: |
| case GSM_PCHAN_CCCH_SDCCH4_CBCH: |
| return GSM_LCHAN_SDCCH; |
| default: |
| return -1; |
| } |
| } |
| |
| enum gsm_phys_chan_config gsm_pchan_by_lchan_type(enum gsm_chan_t type) |
| { |
| switch (type) { |
| case GSM_LCHAN_TCH_F: |
| return GSM_PCHAN_TCH_F; |
| case GSM_LCHAN_TCH_H: |
| return GSM_PCHAN_TCH_H; |
| case GSM_LCHAN_NONE: |
| case GSM_LCHAN_PDTCH: |
| /* TODO: so far lchan->type is NONE in PDCH mode. PDTCH is only |
| * used in osmo-bts. Maybe set PDTCH and drop the NONE case |
| * here. */ |
| return GSM_PCHAN_PDCH; |
| default: |
| return GSM_PCHAN_UNKNOWN; |
| } |
| } |
| |
| /* Can the timeslot in principle be used as this PCHAN kind? */ |
| bool ts_is_capable_of_pchan(struct gsm_bts_trx_ts *ts, enum gsm_phys_chan_config pchan) |
| { |
| switch (ts->pchan_on_init) { |
| case GSM_PCHAN_TCH_F_PDCH: |
| switch (pchan) { |
| case GSM_PCHAN_TCH_F: |
| case GSM_PCHAN_PDCH: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_TCH_F_TCH_H_PDCH: |
| switch (pchan) { |
| case GSM_PCHAN_TCH_F: |
| case GSM_PCHAN_TCH_H: |
| case GSM_PCHAN_PDCH: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_CCCH_SDCCH4_CBCH: |
| switch (pchan) { |
| case GSM_PCHAN_CCCH_SDCCH4_CBCH: |
| case GSM_PCHAN_CCCH_SDCCH4: |
| case GSM_PCHAN_CCCH: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_CCCH_SDCCH4: |
| switch (pchan) { |
| case GSM_PCHAN_CCCH_SDCCH4: |
| case GSM_PCHAN_CCCH: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_SDCCH8_SACCH8C_CBCH: |
| switch (pchan) { |
| case GSM_PCHAN_SDCCH8_SACCH8C_CBCH: |
| case GSM_PCHAN_SDCCH8_SACCH8C: |
| return true; |
| default: |
| return false; |
| } |
| |
| default: |
| return ts->pchan_on_init == pchan; |
| } |
| } |
| |
| bool ts_is_capable_of_lchant(struct gsm_bts_trx_ts *ts, enum gsm_chan_t type) |
| { |
| switch (ts->pchan_on_init) { |
| |
| case GSM_PCHAN_TCH_F: |
| switch (type) { |
| case GSM_LCHAN_TCH_F: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_TCH_H: |
| switch (type) { |
| case GSM_LCHAN_TCH_H: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_TCH_F_PDCH: |
| switch (type) { |
| case GSM_LCHAN_TCH_F: |
| case GSM_LCHAN_PDTCH: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_TCH_F_TCH_H_PDCH: |
| switch (type) { |
| case GSM_LCHAN_TCH_F: |
| case GSM_LCHAN_TCH_H: |
| case GSM_LCHAN_PDTCH: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_PDCH: |
| switch (type) { |
| case GSM_LCHAN_PDTCH: |
| return true; |
| default: |
| return false; |
| } |
| |
| case GSM_PCHAN_CCCH: |
| switch (type) { |
| case GSM_LCHAN_CCCH: |
| return true; |
| default: |
| return false; |
| } |
| break; |
| |
| case GSM_PCHAN_CCCH_SDCCH4_CBCH: |
| case GSM_PCHAN_CCCH_SDCCH4: |
| case GSM_PCHAN_SDCCH8_SACCH8C: |
| case GSM_PCHAN_SDCCH8_SACCH8C_CBCH: |
| switch (type) { |
| case GSM_LCHAN_CCCH: |
| case GSM_LCHAN_SDCCH: |
| return true; |
| default: |
| return false; |
| } |
| |
| default: |
| return false; |
| } |
| } |
| |
| static int trx_count_free_ts(struct gsm_bts_trx *trx, enum gsm_phys_chan_config pchan) |
| { |
| struct gsm_bts_trx_ts *ts; |
| struct gsm_lchan *lchan; |
| int j; |
| int count = 0; |
| |
| if (!trx_is_usable(trx)) |
| return 0; |
| |
| for (j = 0; j < ARRAY_SIZE(trx->ts); j++) { |
| ts = &trx->ts[j]; |
| if (!ts_is_usable(ts)) |
| continue; |
| |
| if (ts->pchan_is == GSM_PCHAN_PDCH) { |
| /* Dynamic timeslots in PDCH mode will become TCH if needed. */ |
| switch (ts->pchan_on_init) { |
| case GSM_PCHAN_TCH_F_PDCH: |
| if (pchan == GSM_PCHAN_TCH_F) |
| count++; |
| continue; |
| |
| case GSM_PCHAN_TCH_F_TCH_H_PDCH: |
| if (pchan == GSM_PCHAN_TCH_F) |
| count++; |
| else if (pchan == GSM_PCHAN_TCH_H) |
| count += 2; |
| continue; |
| |
| default: |
| /* Not dynamic, not applicable. */ |
| continue; |
| } |
| } |
| |
| if (ts->pchan_is != pchan) |
| continue; |
| |
| ts_for_each_lchan(lchan, ts) { |
| if (lchan_state_is(lchan, LCHAN_ST_UNUSED)) |
| count++; |
| } |
| } |
| |
| return count; |
| } |
| |
| /* Count number of free TS of given pchan type */ |
| int bts_count_free_ts(struct gsm_bts *bts, enum gsm_phys_chan_config pchan) |
| { |
| struct gsm_bts_trx *trx; |
| int count = 0; |
| |
| llist_for_each_entry(trx, &bts->trx_list, list) |
| count += trx_count_free_ts(trx, pchan); |
| |
| return count; |
| } |
| |
| bool ts_is_usable(const struct gsm_bts_trx_ts *ts) |
| { |
| if (!trx_is_usable(ts->trx)) { |
| LOGP(DRLL, LOGL_DEBUG, "%s not usable\n", gsm_trx_name(ts->trx)); |
| return false; |
| } |
| |
| if (!ts->fi) |
| return false; |
| |
| switch (ts->fi->state) { |
| case TS_ST_NOT_INITIALIZED: |
| case TS_ST_BORKEN: |
| return false; |
| default: |
| break; |
| } |
| |
| return true; |
| } |
| |
| const struct value_string lchan_activate_mode_names[] = { |
| OSMO_VALUE_STRING(FOR_NONE), |
| OSMO_VALUE_STRING(FOR_MS_CHANNEL_REQUEST), |
| OSMO_VALUE_STRING(FOR_ASSIGNMENT), |
| OSMO_VALUE_STRING(FOR_HANDOVER), |
| OSMO_VALUE_STRING(FOR_VTY), |
| {} |
| }; |
| |
| struct osmo_cell_global_id *cgi_for_msc(struct bsc_msc_data *msc, struct gsm_bts *bts) |
| { |
| static struct osmo_cell_global_id cgi; |
| cgi.lai.plmn = msc->network->plmn; |
| if (msc->core_plmn.mcc != GSM_MCC_MNC_INVALID) |
| cgi.lai.plmn.mcc = msc->core_plmn.mcc; |
| if (msc->core_plmn.mnc != GSM_MCC_MNC_INVALID) { |
| cgi.lai.plmn.mnc = msc->core_plmn.mnc; |
| cgi.lai.plmn.mnc_3_digits = msc->core_plmn.mnc_3_digits; |
| } |
| cgi.lai.lac = (msc->core_lac != -1) ? msc->core_lac : bts->location_area_code; |
| cgi.cell_identity = (msc->core_ci != -1) ? msc->core_ci : bts->cell_identity; |
| |
| return &cgi; |
| } |