1260 lines
32 KiB
C
1260 lines
32 KiB
C
/* (C) 2008-2018 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#include <stdbool.h>
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#include <netinet/in.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/gsm/abis_nm.h>
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#include <osmocom/core/statistics.h>
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#include <osmocom/gsm/protocol/gsm_04_08.h>
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#include <osmocom/gsm/gsm48.h>
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#include <osmocom/bsc/gsm_data.h>
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#include <osmocom/bsc/bsc_msc_data.h>
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#include <osmocom/bsc/abis_nm.h>
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#include <osmocom/bsc/handover_cfg.h>
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void *tall_bsc_ctx = NULL;
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static LLIST_HEAD(bts_models);
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void set_ts_e1link(struct gsm_bts_trx_ts *ts, uint8_t e1_nr,
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uint8_t e1_ts, uint8_t e1_ts_ss)
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{
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ts->e1_link.e1_nr = e1_nr;
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ts->e1_link.e1_ts = e1_ts;
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ts->e1_link.e1_ts_ss = e1_ts_ss;
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}
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static struct gsm_bts_model *bts_model_find(enum gsm_bts_type type)
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{
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struct gsm_bts_model *model;
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llist_for_each_entry(model, &bts_models, list) {
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if (model->type == type)
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return model;
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}
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return NULL;
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}
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int gsm_bts_model_register(struct gsm_bts_model *model)
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{
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if (bts_model_find(model->type))
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return -EEXIST;
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tlv_def_patch(&model->nm_att_tlvdef, &abis_nm_att_tlvdef);
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llist_add_tail(&model->list, &bts_models);
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return 0;
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}
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const struct value_string bts_type_descs[_NUM_GSM_BTS_TYPE+1] = {
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{ GSM_BTS_TYPE_UNKNOWN, "Unknown BTS Type" },
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{ GSM_BTS_TYPE_BS11, "Siemens BTS (BS-11 or compatible)" },
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{ GSM_BTS_TYPE_NANOBTS, "ip.access nanoBTS or compatible" },
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{ GSM_BTS_TYPE_RBS2000, "Ericsson RBS2000 Series" },
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{ GSM_BTS_TYPE_NOKIA_SITE, "Nokia {Metro,Ultra,In}Site" },
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{ GSM_BTS_TYPE_OSMOBTS, "sysmocom sysmoBTS" },
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{ 0, NULL }
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};
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struct gsm_bts_trx *gsm_bts_trx_by_nr(struct gsm_bts *bts, int nr)
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{
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struct gsm_bts_trx *trx;
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llist_for_each_entry(trx, &bts->trx_list, list) {
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if (trx->nr == nr)
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return trx;
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}
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return NULL;
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}
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/* Search for a BTS in the given Location Area; optionally start searching
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* with start_bts (for continuing to search after the first result) */
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struct gsm_bts *gsm_bts_by_lac(struct gsm_network *net, unsigned int lac,
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struct gsm_bts *start_bts)
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{
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int i;
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struct gsm_bts *bts;
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int skip = 0;
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if (start_bts)
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skip = 1;
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for (i = 0; i < net->num_bts; i++) {
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bts = gsm_bts_num(net, i);
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if (skip) {
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if (start_bts == bts)
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skip = 0;
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continue;
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}
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if (lac == GSM_LAC_RESERVED_ALL_BTS || bts->location_area_code == lac)
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return bts;
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}
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return NULL;
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}
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static const struct value_string bts_gprs_mode_names[] = {
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{ BTS_GPRS_NONE, "none" },
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{ BTS_GPRS_GPRS, "gprs" },
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{ BTS_GPRS_EGPRS, "egprs" },
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{ 0, NULL }
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};
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enum bts_gprs_mode bts_gprs_mode_parse(const char *arg, int *valid)
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{
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int rc;
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rc = get_string_value(bts_gprs_mode_names, arg);
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if (valid)
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*valid = rc != -EINVAL;
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return rc;
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}
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const char *bts_gprs_mode_name(enum bts_gprs_mode mode)
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{
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return get_value_string(bts_gprs_mode_names, mode);
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}
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int bts_gprs_mode_is_compat(struct gsm_bts *bts, enum bts_gprs_mode mode)
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{
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if (mode != BTS_GPRS_NONE &&
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!gsm_btsmodel_has_feature(bts->model, BTS_FEAT_GPRS)) {
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return 0;
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}
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if (mode == BTS_GPRS_EGPRS &&
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!gsm_btsmodel_has_feature(bts->model, BTS_FEAT_EGPRS)) {
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return 0;
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}
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return 1;
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}
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int gsm_btsmodel_set_feature(struct gsm_bts_model *model, enum gsm_bts_features feat)
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{
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OSMO_ASSERT(_NUM_BTS_FEAT < MAX_BTS_FEATURES);
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return bitvec_set_bit_pos(&model->features, feat, 1);
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}
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bool gsm_btsmodel_has_feature(struct gsm_bts_model *model, enum gsm_bts_features feat)
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{
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OSMO_ASSERT(_NUM_BTS_FEAT < MAX_BTS_FEATURES);
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return bitvec_get_bit_pos(&model->features, feat);
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}
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int gsm_set_bts_type(struct gsm_bts *bts, enum gsm_bts_type type)
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{
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struct gsm_bts_model *model;
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model = bts_model_find(type);
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if (!model)
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return -EINVAL;
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bts->type = type;
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bts->model = model;
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if (model->start && !model->started) {
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int ret = model->start(bts->network);
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if (ret < 0)
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return ret;
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model->started = true;
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}
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switch (bts->type) {
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case GSM_BTS_TYPE_NANOBTS:
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case GSM_BTS_TYPE_OSMOBTS:
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/* Set the default OML Stream ID to 0xff */
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bts->oml_tei = 0xff;
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bts->c0->nominal_power = 23;
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break;
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case GSM_BTS_TYPE_RBS2000:
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INIT_LLIST_HEAD(&bts->rbs2000.is.conn_groups);
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INIT_LLIST_HEAD(&bts->rbs2000.con.conn_groups);
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break;
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case GSM_BTS_TYPE_BS11:
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case GSM_BTS_TYPE_UNKNOWN:
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case GSM_BTS_TYPE_NOKIA_SITE:
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/* Set default BTS reset timer */
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bts->nokia.bts_reset_timer_cnf = 15;
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case _NUM_GSM_BTS_TYPE:
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break;
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}
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return 0;
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}
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struct gsm_bts *gsm_bts_alloc_register(struct gsm_network *net, enum gsm_bts_type type,
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uint8_t bsic)
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{
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struct gsm_bts_model *model = bts_model_find(type);
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struct gsm_bts *bts;
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if (!model && type != GSM_BTS_TYPE_UNKNOWN)
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return NULL;
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bts = gsm_bts_alloc(net, net->num_bts);
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if (!bts)
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return NULL;
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net->num_bts++;
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bts->type = type;
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bts->model = model;
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bts->bsic = bsic;
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bts->dtxu = GSM48_DTX_SHALL_NOT_BE_USED;
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bts->dtxd = false;
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bts->gprs.ctrl_ack_type_use_block = true; /* use RLC/MAC control block */
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bts->neigh_list_manual_mode = 0;
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bts->early_classmark_allowed_3g = true; /* 3g Early Classmark Sending controlled by bts->early_classmark_allowed param */
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bts->si_common.cell_sel_par.cell_resel_hyst = 2; /* 4 dB */
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bts->si_common.cell_sel_par.rxlev_acc_min = 0;
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bts->si_common.si2quater_neigh_list.arfcn = bts->si_common.data.earfcn_list;
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bts->si_common.si2quater_neigh_list.meas_bw = bts->si_common.data.meas_bw_list;
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bts->si_common.si2quater_neigh_list.length = MAX_EARFCN_LIST;
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bts->si_common.si2quater_neigh_list.thresh_hi = 0;
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osmo_earfcn_init(&bts->si_common.si2quater_neigh_list);
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bts->si_common.neigh_list.data = bts->si_common.data.neigh_list;
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bts->si_common.neigh_list.data_len =
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sizeof(bts->si_common.data.neigh_list);
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bts->si_common.si5_neigh_list.data = bts->si_common.data.si5_neigh_list;
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bts->si_common.si5_neigh_list.data_len =
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sizeof(bts->si_common.data.si5_neigh_list);
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bts->si_common.cell_alloc.data = bts->si_common.data.cell_alloc;
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bts->si_common.cell_alloc.data_len =
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sizeof(bts->si_common.data.cell_alloc);
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bts->si_common.rach_control.re = 1; /* no re-establishment */
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bts->si_common.rach_control.tx_integer = 9; /* 12 slots spread - 217/115 slots delay */
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bts->si_common.rach_control.max_trans = 3; /* 7 retransmissions */
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bts->si_common.rach_control.t2 = 4; /* no emergency calls */
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bts->si_common.chan_desc.att = 1; /* attachment required */
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bts->si_common.chan_desc.bs_pa_mfrms = RSL_BS_PA_MFRMS_5; /* paging frames */
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bts->si_common.chan_desc.bs_ag_blks_res = 1; /* reserved AGCH blocks */
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bts->si_common.chan_desc.t3212 = net->t3212; /* Use network's current value */
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gsm_bts_set_radio_link_timeout(bts, 32); /* Use RADIO LINK TIMEOUT of 32 */
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llist_add_tail(&bts->list, &net->bts_list);
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INIT_LLIST_HEAD(&bts->abis_queue);
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INIT_LLIST_HEAD(&bts->loc_list);
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return bts;
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}
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void gprs_ra_id_by_bts(struct gprs_ra_id *raid, struct gsm_bts *bts)
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{
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*raid = (struct gprs_ra_id){
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.mcc = bts->network->country_code,
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.mnc = bts->network->network_code,
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.lac = bts->location_area_code,
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.rac = bts->gprs.rac,
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};
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}
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int gsm48_ra_id_by_bts(uint8_t *buf, struct gsm_bts *bts)
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{
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struct gprs_ra_id raid;
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gprs_ra_id_by_bts(&raid, bts);
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return gsm48_construct_ra(buf, &raid);
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}
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int gsm_parse_reg(void *ctx, regex_t *reg, char **str, int argc, const char **argv)
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{
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int ret;
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ret = 0;
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if (*str) {
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talloc_free(*str);
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*str = NULL;
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}
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regfree(reg);
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if (argc > 0) {
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*str = talloc_strdup(ctx, argv[0]);
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ret = regcomp(reg, argv[0], 0);
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/* handle compilation failures */
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if (ret != 0) {
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talloc_free(*str);
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*str = NULL;
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}
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}
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return ret;
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}
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/* Assume there are only 256 possible bts */
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osmo_static_assert(sizeof(((struct gsm_bts *) 0)->nr) == 1, _bts_nr_is_256);
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static void depends_calc_index_bit(int bts_nr, int *idx, int *bit)
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{
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*idx = bts_nr / (8 * 4);
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*bit = bts_nr % (8 * 4);
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}
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void bts_depend_mark(struct gsm_bts *bts, int dep)
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{
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int idx, bit;
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depends_calc_index_bit(dep, &idx, &bit);
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bts->depends_on[idx] |= 1 << bit;
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}
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void bts_depend_clear(struct gsm_bts *bts, int dep)
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{
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int idx, bit;
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depends_calc_index_bit(dep, &idx, &bit);
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bts->depends_on[idx] &= ~(1 << bit);
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}
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int bts_depend_is_depedency(struct gsm_bts *base, struct gsm_bts *other)
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{
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int idx, bit;
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depends_calc_index_bit(other->nr, &idx, &bit);
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/* Check if there is a depends bit */
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return (base->depends_on[idx] & (1 << bit)) > 0;
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}
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static int bts_is_online(struct gsm_bts *bts)
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{
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/* TODO: support E1 BTS too */
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if (!is_ipaccess_bts(bts))
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return 1;
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if (!bts->oml_link)
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return 0;
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return bts->mo.nm_state.operational == NM_OPSTATE_ENABLED;
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}
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int bts_depend_check(struct gsm_bts *bts)
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{
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struct gsm_bts *other_bts;
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llist_for_each_entry(other_bts, &bts->network->bts_list, list) {
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if (!bts_depend_is_depedency(bts, other_bts))
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continue;
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if (bts_is_online(other_bts))
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continue;
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return 0;
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}
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return 1;
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}
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/* get the radio link timeout (based on SACCH decode errors, according
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* to algorithm specified in TS 05.08 section 5.2. A value of -1
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* indicates we should use an infinitely long timeout, which only works
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* with OsmoBTS as the BTS implementation */
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int gsm_bts_get_radio_link_timeout(const struct gsm_bts *bts)
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{
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const struct gsm48_cell_options *cell_options = &bts->si_common.cell_options;
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if (bts->infinite_radio_link_timeout)
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return -1;
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else {
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/* Encoding as per Table 10.5.21 of TS 04.08 */
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return (cell_options->radio_link_timeout + 1) << 2;
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}
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}
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/* set the radio link timeout (based on SACCH decode errors, according
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* to algorithm specified in TS 05.08 Section 5.2. A value of -1
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* indicates we should use an infinitely long timeout, which only works
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* with OsmoBTS as the BTS implementation */
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void gsm_bts_set_radio_link_timeout(struct gsm_bts *bts, int value)
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{
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struct gsm48_cell_options *cell_options = &bts->si_common.cell_options;
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if (value < 0)
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bts->infinite_radio_link_timeout = true;
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else {
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bts->infinite_radio_link_timeout = false;
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/* Encoding as per Table 10.5.21 of TS 04.08 */
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if (value < 4)
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value = 4;
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if (value > 64)
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value = 64;
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cell_options->radio_link_timeout = (value >> 2) - 1;
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}
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}
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bool classmark_is_r99(struct gsm_classmark *cm)
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{
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int rev_lev = 0;
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if (cm->classmark1_set)
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rev_lev = cm->classmark1.rev_lev;
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else if (cm->classmark2_len > 0)
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rev_lev = (cm->classmark2[0] >> 5) & 0x3;
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return rev_lev >= 2;
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}
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static const struct osmo_stat_item_desc bts_stat_desc[] = {
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{ "chanloadavg", "Channel load average.", "%", 16, 0 },
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{ "T3122", "T3122 IMMEDIATE ASSIGNMENT REJECT wait indicator.", "s", 16, GSM_T3122_DEFAULT },
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};
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static const struct osmo_stat_item_group_desc bts_statg_desc = {
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.group_name_prefix = "bts",
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.group_description = "base transceiver station",
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.class_id = OSMO_STATS_CLASS_GLOBAL,
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.num_items = ARRAY_SIZE(bts_stat_desc),
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.item_desc = bts_stat_desc,
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};
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void gsm_abis_mo_reset(struct gsm_abis_mo *mo)
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{
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mo->nm_state.operational = NM_OPSTATE_NULL;
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mo->nm_state.availability = NM_AVSTATE_POWER_OFF;
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}
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static void gsm_mo_init(struct gsm_abis_mo *mo, struct gsm_bts *bts,
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uint8_t obj_class, uint8_t p1, uint8_t p2, uint8_t p3)
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{
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mo->bts = bts;
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mo->obj_class = obj_class;
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mo->obj_inst.bts_nr = p1;
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mo->obj_inst.trx_nr = p2;
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mo->obj_inst.ts_nr = p3;
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gsm_abis_mo_reset(mo);
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}
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const struct value_string bts_attribute_names[] = {
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OSMO_VALUE_STRING(BTS_TYPE_VARIANT),
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OSMO_VALUE_STRING(BTS_SUB_MODEL),
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OSMO_VALUE_STRING(TRX_PHY_VERSION),
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{ 0, NULL }
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};
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enum bts_attribute str2btsattr(const char *s)
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{
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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->chan_load_avg = 0;
|
|
|
|
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));
|
|
}
|