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-rw-r--r--src/libbsc/bsc_init.c567
1 files changed, 0 insertions, 567 deletions
diff --git a/src/libbsc/bsc_init.c b/src/libbsc/bsc_init.c
deleted file mode 100644
index 78ca2ab4d..000000000
--- a/src/libbsc/bsc_init.c
+++ /dev/null
@@ -1,567 +0,0 @@
-/* A hackish minimal BSC (+MSC +HLR) implementation */
-
-/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
- * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.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 <openbsc/gsm_data.h>
-#include <osmocom/gsm/gsm_utils.h>
-#include <openbsc/gsm_04_08.h>
-#include <openbsc/abis_rsl.h>
-#include <openbsc/abis_nm.h>
-#include <openbsc/debug.h>
-#include <openbsc/misdn.h>
-#include <osmocom/vty/telnet_interface.h>
-#include <osmocom/vty/ports.h>
-#include <openbsc/system_information.h>
-#include <openbsc/paging.h>
-#include <openbsc/signal.h>
-#include <openbsc/chan_alloc.h>
-#include <osmocom/core/talloc.h>
-#include <openbsc/ipaccess.h>
-#include <osmocom/gsm/sysinfo.h>
-#include <openbsc/e1_config.h>
-#include <openbsc/common_bsc.h>
-#include <openbsc/pcu_if.h>
-#include <openbsc/osmo_msc.h>
-#include <limits.h>
-
-/* global pointer to the gsm network data structure */
-extern struct gsm_network *bsc_gsmnet;
-
-/* Callback function for NACK on the OML NM */
-static int oml_msg_nack(struct nm_nack_signal_data *nack)
-{
- if (nack->mt == NM_MT_GET_ATTR_NACK) {
- LOGP(DNM, LOGL_ERROR, "BTS%u does not support Get Attributes "
- "OML message.\n", nack->bts->nr);
- return 0;
- }
-
- if (nack->mt == NM_MT_SET_BTS_ATTR_NACK)
- LOGP(DNM, LOGL_ERROR, "Failed to set BTS attributes. That is fatal. "
- "Was the bts type and frequency properly specified?\n");
- else
- LOGP(DNM, LOGL_ERROR, "Got %s NACK going to drop the OML links.\n",
- abis_nm_nack_name(nack->mt));
-
- if (!nack->bts) {
- LOGP(DNM, LOGL_ERROR, "Unknown bts. Can not drop it.\n");
- return 0;
- }
-
- if (is_ipaccess_bts(nack->bts))
- ipaccess_drop_oml(nack->bts);
-
- return 0;
-}
-
-/* Callback function to be called every time we receive a signal from NM */
-static int nm_sig_cb(unsigned int subsys, unsigned int signal,
- void *handler_data, void *signal_data)
-{
- struct nm_nack_signal_data *nack;
-
- switch (signal) {
- case S_NM_NACK:
- nack = signal_data;
- return oml_msg_nack(nack);
- default:
- break;
- }
- return 0;
-}
-
-int bsc_shutdown_net(struct gsm_network *net)
-{
- struct gsm_bts *bts;
-
- llist_for_each_entry(bts, &net->bts_list, list) {
- LOGP(DNM, LOGL_NOTICE, "shutting down OML for BTS %u\n", bts->nr);
- osmo_signal_dispatch(SS_L_GLOBAL, S_GLOBAL_BTS_CLOSE_OM, bts);
- }
-
- return 0;
-}
-
-static int rsl_si(struct gsm_bts_trx *trx, enum osmo_sysinfo_type i, int si_len)
-{
- struct gsm_bts *bts = trx->bts;
- int rc, j;
-
- if (si_len) {
- DEBUGP(DRR, "SI%s: %s\n", get_value_string(osmo_sitype_strs, i),
- osmo_hexdump(GSM_BTS_SI(bts, i), GSM_MACBLOCK_LEN));
- } else
- DEBUGP(DRR, "SI%s: OFF\n", get_value_string(osmo_sitype_strs, i));
-
- switch (i) {
- case SYSINFO_TYPE_5:
- case SYSINFO_TYPE_5bis:
- case SYSINFO_TYPE_5ter:
- case SYSINFO_TYPE_6:
- rc = rsl_sacch_filling(trx, osmo_sitype2rsl(i),
- si_len ? GSM_BTS_SI(bts, i) : NULL, si_len);
- break;
- case SYSINFO_TYPE_2quater:
- if (si_len == 0) {
- rc = rsl_bcch_info(trx, i, NULL, 0);
- break;
- }
- for (j = 0; j <= bts->si2q_count; j++)
- rc = rsl_bcch_info(trx, i, (const uint8_t *)GSM_BTS_SI2Q(bts, j), GSM_MACBLOCK_LEN);
- break;
- default:
- rc = rsl_bcch_info(trx, i, si_len ? GSM_BTS_SI(bts, i) : NULL, si_len);
- break;
- }
-
- return rc;
-}
-
-/* set all system information types for a TRX */
-int gsm_bts_trx_set_system_infos(struct gsm_bts_trx *trx)
-{
- int i, rc;
- struct gsm_bts *bts = trx->bts;
- uint8_t gen_si[_MAX_SYSINFO_TYPE], n_si = 0, n;
- int si_len[_MAX_SYSINFO_TYPE];
-
- bts->si_common.cell_sel_par.ms_txpwr_max_ccch =
- ms_pwr_ctl_lvl(bts->band, bts->ms_max_power);
- bts->si_common.cell_sel_par.neci = bts->network->neci;
-
- /* Zero/forget the state of the dynamically computed SIs, leeping the static ones */
- bts->si_valid = bts->si_mode_static;
-
- /* First, we determine which of the SI messages we actually need */
-
- if (trx == bts->c0) {
- /* 1...4 are always present on a C0 TRX */
- gen_si[n_si++] = SYSINFO_TYPE_1;
- gen_si[n_si++] = SYSINFO_TYPE_2;
- gen_si[n_si++] = SYSINFO_TYPE_2bis;
- gen_si[n_si++] = SYSINFO_TYPE_2ter;
- gen_si[n_si++] = SYSINFO_TYPE_2quater;
- gen_si[n_si++] = SYSINFO_TYPE_3;
- gen_si[n_si++] = SYSINFO_TYPE_4;
-
- /* 13 is always present on a C0 TRX of a GPRS BTS */
- if (bts->gprs.mode != BTS_GPRS_NONE)
- gen_si[n_si++] = SYSINFO_TYPE_13;
- }
-
- /* 5 and 6 are always present on every TRX */
- gen_si[n_si++] = SYSINFO_TYPE_5;
- gen_si[n_si++] = SYSINFO_TYPE_5bis;
- gen_si[n_si++] = SYSINFO_TYPE_5ter;
- gen_si[n_si++] = SYSINFO_TYPE_6;
-
- /* Second, we generate the selected SI via RSL */
-
- for (n = 0; n < n_si; n++) {
- i = gen_si[n];
- /* Only generate SI if this SI is not in "static" (user-defined) mode */
- if (!(bts->si_mode_static & (1 << i))) {
- /* Set SI as being valid. gsm_generate_si() might unset
- * it, if SI is not required. */
- bts->si_valid |= (1 << i);
- rc = gsm_generate_si(bts, i);
- if (rc < 0)
- goto err_out;
- si_len[i] = rc;
- } else {
- if (i == SYSINFO_TYPE_5 || i == SYSINFO_TYPE_5bis
- || i == SYSINFO_TYPE_5ter)
- si_len[i] = 18;
- else if (i == SYSINFO_TYPE_6)
- si_len[i] = 11;
- else
- si_len[i] = 23;
- }
- }
-
- /* Third, we send the selected SI via RSL */
-
- for (n = 0; n < n_si; n++) {
- i = gen_si[n];
- /* if we don't currently have this SI, we send a zero-length
- * RSL BCCH FILLING / SACCH FILLING * in order to deactivate
- * the SI, in case it might have previously been active */
- if (!GSM_BTS_HAS_SI(bts, i))
- rc = rsl_si(trx, i, 0);
- else
- rc = rsl_si(trx, i, si_len[i]);
- if (rc < 0)
- return rc;
- }
-
- /* Make sure the PCU is aware (in case anything GPRS related has
- * changed in SI */
- pcu_info_update(bts);
-
- return 0;
-err_out:
- LOGP(DRR, LOGL_ERROR, "Cannot generate SI%s for BTS %u: error <%s>, "
- "most likely a problem with neighbor cell list generation\n",
- get_value_string(osmo_sitype_strs, i), bts->nr, strerror(-rc));
- return rc;
-}
-
-/* set all system information types for a BTS */
-int gsm_bts_set_system_infos(struct gsm_bts *bts)
-{
- struct gsm_bts_trx *trx;
-
- /* Generate a new ID */
- bts->bcch_change_mark += 1;
- bts->bcch_change_mark %= 0x7;
-
- llist_for_each_entry(trx, &bts->trx_list, list) {
- int rc;
-
- rc = gsm_bts_trx_set_system_infos(trx);
- if (rc != 0)
- return rc;
- }
-
- return 0;
-}
-
-/* Produce a MA as specified in 10.5.2.21 */
-static int generate_ma_for_ts(struct gsm_bts_trx_ts *ts)
-{
- /* we have three bitvecs: the per-timeslot ARFCNs, the cell chan ARFCNs
- * and the MA */
- struct bitvec *cell_chan = &ts->trx->bts->si_common.cell_alloc;
- struct bitvec *ts_arfcn = &ts->hopping.arfcns;
- struct bitvec *ma = &ts->hopping.ma;
- unsigned int num_cell_arfcns, bitnum, n_chan;
- int i;
-
- /* re-set the MA to all-zero */
- ma->cur_bit = 0;
- ts->hopping.ma_len = 0;
- memset(ma->data, 0, ma->data_len);
-
- if (!ts->hopping.enabled)
- return 0;
-
- /* count the number of ARFCNs in the cell channel allocation */
- num_cell_arfcns = 0;
- for (i = 0; i < 1024; i++) {
- if (bitvec_get_bit_pos(cell_chan, i))
- num_cell_arfcns++;
- }
-
- /* pad it to octet-aligned number of bits */
- ts->hopping.ma_len = num_cell_arfcns / 8;
- if (num_cell_arfcns % 8)
- ts->hopping.ma_len++;
-
- n_chan = 0;
- for (i = 0; i < 1024; i++) {
- if (!bitvec_get_bit_pos(cell_chan, i))
- continue;
- /* set the corresponding bit in the MA */
- bitnum = (ts->hopping.ma_len * 8) - 1 - n_chan;
- if (bitvec_get_bit_pos(ts_arfcn, i))
- bitvec_set_bit_pos(ma, bitnum, 1);
- else
- bitvec_set_bit_pos(ma, bitnum, 0);
- n_chan++;
- }
-
- /* ARFCN 0 is special: It is coded last in the bitmask */
- if (bitvec_get_bit_pos(cell_chan, 0)) {
- n_chan++;
- /* set the corresponding bit in the MA */
- bitnum = (ts->hopping.ma_len * 8) - 1 - n_chan;
- if (bitvec_get_bit_pos(ts_arfcn, 0))
- bitvec_set_bit_pos(ma, bitnum, 1);
- else
- bitvec_set_bit_pos(ma, bitnum, 0);
- }
-
- return 0;
-}
-
-static void bootstrap_rsl(struct gsm_bts_trx *trx)
-{
- unsigned int i;
-
- LOGP(DRSL, LOGL_NOTICE, "bootstrapping RSL for BTS/TRX (%u/%u) "
- "on ARFCN %u using MCC=%u MNC=%u LAC=%u CID=%u BSIC=%u\n",
- trx->bts->nr, trx->nr, trx->arfcn, bsc_gsmnet->country_code,
- bsc_gsmnet->network_code, trx->bts->location_area_code,
- trx->bts->cell_identity, trx->bts->bsic);
-
- if (trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE) {
- rsl_nokia_si_begin(trx);
- }
-
- gsm_bts_trx_set_system_infos(trx);
-
- if (trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE) {
- /* channel unspecific, power reduction in 2 dB steps */
- rsl_bs_power_control(trx, 0xFF, trx->max_power_red / 2);
- rsl_nokia_si_end(trx);
- }
-
- for (i = 0; i < ARRAY_SIZE(trx->ts); i++)
- generate_ma_for_ts(&trx->ts[i]);
-}
-
-/* Callback function to be called every time we receive a signal from INPUT */
-static int inp_sig_cb(unsigned int subsys, unsigned int signal,
- void *handler_data, void *signal_data)
-{
- struct input_signal_data *isd = signal_data;
- struct gsm_bts_trx *trx = isd->trx;
- int ts_no, lchan_no;
- /* N. B: we rely on attribute order when parsing response in abis_nm_rx_get_attr_resp() */
- const uint8_t bts_attr[] = { NM_ATT_MANUF_ID, NM_ATT_SW_CONFIG, };
- const uint8_t trx_attr[] = { NM_ATT_MANUF_STATE, NM_ATT_SW_CONFIG, };
-
- /* we should not request more attributes than we're ready to handle */
- OSMO_ASSERT(sizeof(bts_attr) < MAX_BTS_ATTR);
- OSMO_ASSERT(sizeof(trx_attr) < MAX_BTS_ATTR);
-
- if (subsys != SS_L_INPUT)
- return -EINVAL;
-
- LOGP(DLMI, LOGL_DEBUG, "%s(): Input signal '%s' received\n", __func__,
- get_value_string(e1inp_signal_names, signal));
- switch (signal) {
- case S_L_INP_TEI_UP:
- if (isd->link_type == E1INP_SIGN_OML) {
- /* TODO: this is required for the Nokia BTS, hopping is configured
- during OML, other MA is not set. */
- struct gsm_bts_trx *cur_trx;
- /* was static in system_information.c */
- extern int generate_cell_chan_list(uint8_t *chan_list, struct gsm_bts *bts);
- uint8_t ca[20];
- /* has to be called before generate_ma_for_ts to
- set bts->si_common.cell_alloc */
- generate_cell_chan_list(ca, trx->bts);
-
- /* Request generic BTS-level attributes */
- abis_nm_get_attr(trx->bts, NM_OC_BTS, 0xFF, 0xFF, 0xFF, bts_attr, sizeof(bts_attr));
-
- llist_for_each_entry(cur_trx, &trx->bts->trx_list, list) {
- int i;
- /* Request TRX-level attributes */
- abis_nm_get_attr(cur_trx->bts, NM_OC_BASEB_TRANSC, 0, cur_trx->nr, 0xFF,
- trx_attr, sizeof(trx_attr));
- for (i = 0; i < ARRAY_SIZE(cur_trx->ts); i++)
- generate_ma_for_ts(&cur_trx->ts[i]);
- }
- }
- if (isd->link_type == E1INP_SIGN_RSL)
- bootstrap_rsl(trx);
- break;
- case S_L_INP_TEI_DN:
- LOGP(DLMI, LOGL_ERROR, "Lost some E1 TEI link: %d %p\n", isd->link_type, trx);
-
- if (isd->link_type == E1INP_SIGN_OML)
- rate_ctr_inc(&trx->bts->network->bsc_ctrs->ctr[BSC_CTR_BTS_OML_FAIL]);
- else if (isd->link_type == E1INP_SIGN_RSL)
- rate_ctr_inc(&trx->bts->network->bsc_ctrs->ctr[BSC_CTR_BTS_RSL_FAIL]);
-
- /*
- * free all allocated channels. change the nm_state so the
- * trx and trx_ts becomes unusable and chan_alloc.c can not
- * allocate from it.
- */
- for (ts_no = 0; ts_no < ARRAY_SIZE(trx->ts); ++ts_no) {
- struct gsm_bts_trx_ts *ts = &trx->ts[ts_no];
-
- for (lchan_no = 0; lchan_no < ARRAY_SIZE(ts->lchan); ++lchan_no) {
- if (ts->lchan[lchan_no].state != LCHAN_S_NONE)
- lchan_free(&ts->lchan[lchan_no]);
- lchan_reset(&ts->lchan[lchan_no]);
- }
- }
-
- gsm_bts_mo_reset(trx->bts);
-
- abis_nm_clear_queue(trx->bts);
- break;
- default:
- break;
- }
-
- return 0;
-}
-
-static int bootstrap_bts(struct gsm_bts *bts)
-{
- int i, n;
-
- if (!bts->model)
- return -EFAULT;
-
- if (bts->model->start && !bts->model->started) {
- int ret = bts->model->start(bts->network);
- if (ret < 0)
- return ret;
-
- bts->model->started = true;
- }
-
- /* FIXME: What about secondary TRX of a BTS? What about a BTS that has TRX
- * in different bands? Why is 'band' a parameter of the BTS and not of the TRX? */
- switch (bts->band) {
- case GSM_BAND_1800:
- if (bts->c0->arfcn < 512 || bts->c0->arfcn > 885) {
- LOGP(DNM, LOGL_ERROR, "GSM1800 channel must be between 512-885.\n");
- return -EINVAL;
- }
- break;
- case GSM_BAND_1900:
- if (bts->c0->arfcn < 512 || bts->c0->arfcn > 810) {
- LOGP(DNM, LOGL_ERROR, "GSM1900 channel must be between 512-810.\n");
- return -EINVAL;
- }
- break;
- case GSM_BAND_900:
- if ((bts->c0->arfcn > 124 && bts->c0->arfcn < 955) ||
- bts->c0->arfcn > 1023) {
- LOGP(DNM, LOGL_ERROR, "GSM900 channel must be between 0-124, 955-1023.\n");
- return -EINVAL;
- }
- break;
- case GSM_BAND_850:
- if (bts->c0->arfcn < 128 || bts->c0->arfcn > 251) {
- LOGP(DNM, LOGL_ERROR, "GSM850 channel must be between 128-251.\n");
- return -EINVAL;
- }
- break;
- default:
- LOGP(DNM, LOGL_ERROR, "Unsupported frequency band.\n");
- return -EINVAL;
- }
-
- if (bts->network->auth_policy == GSM_AUTH_POLICY_ACCEPT_ALL &&
- !bts->si_common.rach_control.cell_bar)
- LOGP(DNM, LOGL_ERROR, "\nWARNING: You are running an 'accept-all' "
- "network on a BTS that is not barred. This "
- "configuration is likely to interfere with production "
- "GSM networks and should only be used in a RF "
- "shielded environment such as a faraday cage!\n\n");
-
- /* Control Channel Description is set from vty/config */
-
- /* T3212 is set from vty/config */
-
- /* Set ccch config by looking at ts config */
- for (n=0, i=0; i<8; i++)
- n += bts->c0->ts[i].pchan == GSM_PCHAN_CCCH ? 1 : 0;
-
- /* Indicate R99 MSC in SI3 */
- bts->si_common.chan_desc.mscr = 1;
-
- switch (n) {
- case 0:
- bts->si_common.chan_desc.ccch_conf = RSL_BCCH_CCCH_CONF_1_C;
- /* Limit reserved block to 2 on combined channel according to
- 3GPP TS 44.018 Table 10.5.2.11.1 */
- if (bts->si_common.chan_desc.bs_ag_blks_res > 2) {
- LOGP(DNM, LOGL_NOTICE, "CCCH is combined with SDCCHs, "
- "reducing BS-AG-BLKS-RES value %d -> 2\n",
- bts->si_common.chan_desc.bs_ag_blks_res);
- bts->si_common.chan_desc.bs_ag_blks_res = 2;
- }
- break;
- case 1:
- bts->si_common.chan_desc.ccch_conf = RSL_BCCH_CCCH_CONF_1_NC;
- break;
- case 2:
- bts->si_common.chan_desc.ccch_conf = RSL_BCCH_CCCH_CONF_2_NC;
- break;
- case 3:
- bts->si_common.chan_desc.ccch_conf = RSL_BCCH_CCCH_CONF_3_NC;
- break;
- case 4:
- bts->si_common.chan_desc.ccch_conf = RSL_BCCH_CCCH_CONF_4_NC;
- break;
- default:
- LOGP(DNM, LOGL_ERROR, "Unsupported CCCH timeslot configuration\n");
- return -EINVAL;
- }
-
- bts->si_common.cell_options.pwrc = 0; /* PWRC not set */
-
- bts->si_common.cell_sel_par.acs = 0;
-
- bts->si_common.ncc_permitted = 0xff;
-
- /* Initialize the BTS state */
- gsm_bts_mo_reset(bts);
-
- return 0;
-}
-
-int bsc_network_alloc(mncc_recv_cb_t mncc_recv)
-{
- /* initialize our data structures */
- bsc_gsmnet = bsc_network_init(tall_bsc_ctx, 1, 1, mncc_recv);
- if (!bsc_gsmnet)
- return -ENOMEM;
-
- bsc_gsmnet->name_long = talloc_strdup(bsc_gsmnet, "OpenBSC");
- bsc_gsmnet->name_short = talloc_strdup(bsc_gsmnet, "OpenBSC");
-
- return 0;
-}
-
-int bsc_network_configure(const char *config_file)
-{
- struct gsm_bts *bts;
- int rc;
-
- rc = vty_read_config_file(config_file, NULL);
- if (rc < 0) {
- LOGP(DNM, LOGL_FATAL, "Failed to parse the config file: '%s'\n", config_file);
- return rc;
- }
-
- /* start telnet after reading config for vty_get_bind_addr() */
- rc = telnet_init_dynif(tall_bsc_ctx, bsc_gsmnet, vty_get_bind_addr(),
- OSMO_VTY_PORT_NITB_BSC);
- if (rc < 0)
- return rc;
-
- osmo_signal_register_handler(SS_NM, nm_sig_cb, NULL);
- osmo_signal_register_handler(SS_L_INPUT, inp_sig_cb, NULL);
-
- llist_for_each_entry(bts, &bsc_gsmnet->bts_list, list) {
- rc = bootstrap_bts(bts);
- if (rc < 0) {
- LOGP(DNM, LOGL_FATAL, "Error bootstrapping BTS\n");
- return rc;
- }
- rc = e1_reconfig_bts(bts);
- if (rc < 0) {
- LOGP(DNM, LOGL_FATAL, "Error enabling E1 input driver\n");
- return rc;
- }
- }
-
- return 0;
-}