| /* (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 <osmocom/core/linuxlist.h> |
| #include <osmocom/core/talloc.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/bsc/gsm_data.h> |
| #include <osmocom/bsc/bsc_msc_data.h> |
| #include <osmocom/bsc/abis_nm.h> |
| #include <osmocom/bsc/handover_cfg.h> |
| |
| void *tall_bsc_ctx = 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 && |
| !gsm_btsmodel_has_feature(bts->model, BTS_FEAT_GPRS)) { |
| return 0; |
| } |
| if (mode == BTS_GPRS_EGPRS && |
| !gsm_btsmodel_has_feature(bts->model, BTS_FEAT_EGPRS)) { |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| int gsm_btsmodel_set_feature(struct gsm_bts_model *model, enum gsm_bts_features feat) |
| { |
| OSMO_ASSERT(_NUM_BTS_FEAT < MAX_BTS_FEATURES); |
| return bitvec_set_bit_pos(&model->features, feat, 1); |
| } |
| |
| bool gsm_btsmodel_has_feature(struct gsm_bts_model *model, enum gsm_bts_features feat) |
| { |
| OSMO_ASSERT(_NUM_BTS_FEAT < MAX_BTS_FEATURES); |
| return bitvec_get_bit_pos(&model->features, feat); |
| } |
| |
| 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; |
| 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 = 0; |
| 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 = net->t3212; /* Use network's current value */ |
| gsm_bts_set_radio_link_timeout(bts, 32); /* Use RADIO LINK TIMEOUT of 32 */ |
| |
| llist_add_tail(&bts->list, &net->bts_list); |
| |
| INIT_LLIST_HEAD(&bts->abis_queue); |
| |
| INIT_LLIST_HEAD(&bts->loc_list); |
| |
| return bts; |
| } |
| |
| void gprs_ra_id_by_bts(struct gprs_ra_id *raid, struct gsm_bts *bts) |
| { |
| raid->mcc = bts->network->country_code; |
| raid->mnc = bts->network->network_code; |
| raid->lac = bts->location_area_code; |
| raid->rac = bts->gprs.rac; |
| } |
| |
| int gsm48_ra_id_by_bts(uint8_t *buf, struct gsm_bts *bts) |
| { |
| struct gprs_ra_id raid; |
| |
| gprs_ra_id_by_bts(&raid, bts); |
| |
| return gsm48_construct_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_bts_features_descs[] = { |
| { BTS_FEAT_HSCSD, "HSCSD" }, |
| { BTS_FEAT_GPRS, "GPRS" }, |
| { BTS_FEAT_EGPRS, "EGPRS" }, |
| { BTS_FEAT_ECSD, "ECSD" }, |
| { BTS_FEAT_HOPPING, "Frequency Hopping" }, |
| { BTS_FEAT_MULTI_TSC, "Multi-TSC" }, |
| { BTS_FEAT_OML_ALERTS, "OML Alerts" }, |
| { BTS_FEAT_AGCH_PCH_PROP, "AGCH/PCH proportional allocation" }, |
| { BTS_FEAT_CBCH, "CBCH" }, |
| { 0, NULL } |
| }; |
| |
| 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[13] = { |
| { 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 lchan_s_names[] = { |
| { LCHAN_S_NONE, "NONE" }, |
| { LCHAN_S_ACT_REQ, "ACTIVATION REQUESTED" }, |
| { LCHAN_S_ACTIVE, "ACTIVE" }, |
| { LCHAN_S_INACTIVE, "INACTIVE" }, |
| { LCHAN_S_REL_REQ, "RELEASE REQUESTED" }, |
| { LCHAN_S_REL_ERR, "RELEASE DUE ERROR" }, |
| { LCHAN_S_BROKEN, "BROKEN UNUSABLE" }, |
| { 0, NULL } |
| }; |
| |
| const char *gsm_lchans_name(enum gsm_lchan_state s) |
| { |
| return get_value_string(lchan_s_names, s); |
| } |
| |
| 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(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; |
| } |
| |
| 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 = GSM_PCHAN_NONE; |
| ts->dyn.pchan_is = GSM_PCHAN_NONE; |
| ts->dyn.pchan_want = GSM_PCHAN_NONE; |
| ts->tsc = -1; |
| |
| 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, |
| }; |
| |
| struct gsm_bts *gsm_bts_alloc(struct gsm_network *net, uint8_t bts_num) |
| { |
| struct gsm_bts *bts = talloc_zero(net, struct gsm_bts); |
| 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 = GSM_PCHAN_CCCH_SDCCH4; |
| |
| 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->ho = ho_cfg_init(bts, net->ho); |
| |
| /* timer overrides */ |
| bts->T3122 = 0; /* not overriden by default */ |
| |
| 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) |
| { |
| switch (ts->pchan) { |
| case GSM_PCHAN_TCH_F_TCH_H_PDCH: |
| if (ts->dyn.pchan_is == ts->dyn.pchan_want) |
| snprintf(ts2str, sizeof(ts2str), |
| "(bts=%d,trx=%d,ts=%d,pchan=%s as %s)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan), |
| gsm_pchan_name(ts->dyn.pchan_is)); |
| else |
| snprintf(ts2str, sizeof(ts2str), |
| "(bts=%d,trx=%d,ts=%d,pchan=%s" |
| " switching %s -> %s)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan), |
| gsm_pchan_name(ts->dyn.pchan_is), |
| gsm_pchan_name(ts->dyn.pchan_want)); |
| break; |
| case GSM_PCHAN_TCH_F_PDCH: |
| if ((ts->flags & TS_F_PDCH_PENDING_MASK) == 0) |
| snprintf(ts2str, sizeof(ts2str), |
| "(bts=%d,trx=%d,ts=%d,pchan=%s as %s)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan), |
| (ts->flags & TS_F_PDCH_ACTIVE)? "PDCH" |
| : "TCH/F"); |
| else |
| snprintf(ts2str, sizeof(ts2str), |
| "(bts=%d,trx=%d,ts=%d,pchan=%s" |
| " switching %s -> %s)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan), |
| (ts->flags & TS_F_PDCH_ACTIVE)? "PDCH" |
| : "TCH/F", |
| (ts->flags & TS_F_PDCH_ACT_PENDING)? "PDCH" |
| : "TCH/F"); |
| break; |
| default: |
| snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d,ts=%d,pchan=%s)", |
| ts->trx->bts->nr, ts->trx->nr, ts->nr, |
| gsm_pchan_name(ts->pchan)); |
| break; |
| } |
| |
| 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) |
| { |
| enum gsm_phys_chan_config pchan = lchan->ts->pchan; |
| if (pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| return gsm_lchan_as_pchan2chan_nr(lchan, |
| lchan->ts->dyn.pchan_is); |
| return gsm_pchan2chan_nr(lchan->ts->pchan, lchan->ts->nr, lchan->nr); |
| } |
| |
| uint8_t gsm_lchan_as_pchan2chan_nr(const struct gsm_lchan *lchan, |
| enum gsm_phys_chan_config as_pchan) |
| { |
| if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| && as_pchan == GSM_PCHAN_PDCH) |
| return RSL_CHAN_OSMO_PDCH | (lchan->ts->nr & ~RSL_CHAN_NR_MASK); |
| return gsm_pchan2chan_nr(as_pchan, 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 == 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 == 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 = true; |
| |
| if (rc) |
| *rc = -EINVAL; |
| |
| if (cbits == 0x01) { |
| lch_idx = 0; /* TCH/F */ |
| if (ts->pchan != GSM_PCHAN_TCH_F && |
| ts->pchan != GSM_PCHAN_PDCH && |
| ts->pchan != GSM_PCHAN_TCH_F_PDCH |
| && !(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| && (ts->dyn.pchan_is == GSM_PCHAN_TCH_F |
| || ts->dyn.pchan_want == GSM_PCHAN_TCH_F))) |
| ok = false; |
| } else if ((cbits & 0x1e) == 0x02) { |
| lch_idx = cbits & 0x1; /* TCH/H */ |
| if (ts->pchan != GSM_PCHAN_TCH_H |
| && !(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| && (ts->dyn.pchan_is == GSM_PCHAN_TCH_H |
| || ts->dyn.pchan_want == GSM_PCHAN_TCH_H))) |
| ok = false; |
| } else if ((cbits & 0x1c) == 0x04) { |
| lch_idx = cbits & 0x3; /* SDCCH/4 */ |
| if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4 && |
| ts->pchan != GSM_PCHAN_CCCH_SDCCH4_CBCH) |
| ok = false; |
| } else if ((cbits & 0x18) == 0x08) { |
| lch_idx = cbits & 0x7; /* SDCCH/8 */ |
| if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C && |
| ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C_CBCH) |
| ok = false; |
| } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| lch_idx = 0; |
| if (ts->pchan != GSM_PCHAN_CCCH && |
| ts->pchan != GSM_PCHAN_CCCH_SDCCH4 && |
| ts->pchan != GSM_PCHAN_CCCH_SDCCH4_CBCH) |
| ok = false; |
| /* FIXME: we should not return first sdcch4 !!! */ |
| } else if ((chan_nr & RSL_CHAN_NR_MASK) == RSL_CHAN_OSMO_PDCH) { |
| lch_idx = 0; |
| if (ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| ok = false; |
| } 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, |
| /* |
| * GSM_PCHAN_TCH_F_PDCH and GSM_PCHAN_TCH_F_TCH_H_PDCH should not be |
| * part of this, those TS are handled according to their dynamic state. |
| */ |
| }; |
| |
| /*! Return the actual pchan type, also heeding dynamic TS. */ |
| enum gsm_phys_chan_config ts_pchan(struct gsm_bts_trx_ts *ts) |
| { |
| switch (ts->pchan) { |
| case GSM_PCHAN_TCH_F_TCH_H_PDCH: |
| return ts->dyn.pchan_is; |
| case GSM_PCHAN_TCH_F_PDCH: |
| if (ts->flags & TS_F_PDCH_ACTIVE) |
| return GSM_PCHAN_PDCH; |
| else |
| return GSM_PCHAN_TCH_F; |
| default: |
| return ts->pchan; |
| } |
| } |
| |
| /*! According to ts->pchan and possibly ts->dyn_pchan, return the number of |
| * logical channels available in the timeslot. */ |
| uint8_t ts_subslots(struct gsm_bts_trx_ts *ts) |
| { |
| return subslots_per_pchan[ts_pchan(ts)]; |
| } |
| |
| 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(ts)); |
| } |