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osmo-mgw/openbsc/src/gsm_data.c

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/* (C) 2008-2010 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 <netinet/in.h>
#include <osmocore/linuxlist.h>
#include <osmocore/talloc.h>
#include <osmocore/gsm_utils.h>
#include <osmocore/statistics.h>
#include <openbsc/gsm_data.h>
#include <openbsc/osmo_msc_data.h>
#include <openbsc/abis_nm.h>
void *tall_bsc_ctx;
static LLIST_HEAD(bts_models);
void set_ts_e1link(struct gsm_bts_trx_ts *ts, u_int8_t e1_nr,
u_int8_t e1_ts, u_int8_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 const struct value_string pchan_names[] = {
{ GSM_PCHAN_NONE, "NONE" },
{ GSM_PCHAN_CCCH, "CCCH" },
{ GSM_PCHAN_CCCH_SDCCH4,"CCCH+SDCCH4" },
{ GSM_PCHAN_TCH_F, "TCH/F" },
{ GSM_PCHAN_TCH_H, "TCH/H" },
{ GSM_PCHAN_SDCCH8_SACCH8C, "SDCCH8" },
{ GSM_PCHAN_PDCH, "PDCH" },
{ GSM_PCHAN_TCH_F_PDCH, "TCH/F_PDCH" },
{ GSM_PCHAN_UNKNOWN, "UNKNOWN" },
{ 0, NULL }
};
const char *gsm_pchan_name(enum gsm_phys_chan_config c)
{
return get_value_string(pchan_names, c);
}
enum gsm_phys_chan_config gsm_pchan_parse(const char *name)
{
return get_string_value(pchan_names, name);
}
static const struct value_string lchant_names[] = {
{ GSM_LCHAN_NONE, "NONE" },
{ GSM_LCHAN_SDCCH, "SDCCH" },
{ GSM_LCHAN_TCH_F, "TCH/F" },
{ GSM_LCHAN_TCH_H, "TCH/H" },
{ GSM_LCHAN_UNKNOWN, "UNKNOWN" },
{ 0, NULL }
};
const char *gsm_lchant_name(enum gsm_chan_t c)
{
return get_value_string(lchant_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" },
{ 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);
}
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, &nm_att_tlvdef);
llist_add_tail(&model->list, &bts_models);
return 0;
}
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->nm_state.administrative = NM_STATE_UNLOCKED;
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->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;
lchan = &ts->lchan[l];
lchan->ts = ts;
lchan->nr = l;
lchan->type = GSM_LCHAN_NONE;
}
}
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 };
struct gsm_bts *gsm_bts_alloc(struct gsm_network *net, enum gsm_bts_type type,
u_int8_t tsc, u_int8_t bsic)
{
struct gsm_bts *bts = talloc_zero(net, struct gsm_bts);
struct gsm_bts_model *model = bts_model_find(type);
int i;
if (!bts)
return NULL;
if (!model && type != GSM_BTS_TYPE_UNKNOWN) {
talloc_free(bts);
return NULL;
}
bts->network = net;
bts->nr = net->num_bts++;
bts->type = type;
bts->model = model;
bts->tsc = tsc;
bts->bsic = bsic;
bts->num_trx = 0;
INIT_LLIST_HEAD(&bts->trx_list);
bts->ms_max_power = 15; /* dBm */
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.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.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 */
for (i = 0; i < ARRAY_SIZE(bts->gprs.nsvc); i++) {
bts->gprs.nsvc[i].bts = bts;
bts->gprs.nsvc[i].id = i;
}
memcpy(&bts->gprs.nse.timer, bts_nse_timer_default,
sizeof(bts->gprs.nse.timer));
memcpy(&bts->gprs.cell.timer, bts_cell_timer_default,
sizeof(bts->gprs.cell.timer));
/* create our primary TRX */
bts->c0 = gsm_bts_trx_alloc(bts);
if (!bts->c0) {
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->abis_queue);
llist_add_tail(&bts->list, &net->bts_list);
return bts;
}
struct gsm_network *gsm_network_init(u_int16_t country_code, u_int16_t network_code,
int (*mncc_recv)(struct gsm_network *, int, void *))
{
struct gsm_network *net;
net = talloc_zero(tall_bsc_ctx, struct gsm_network);
if (!net)
return NULL;
net->msc_data = talloc_zero(net, struct osmo_msc_data);
if (!net->msc_data) {
talloc_free(net);
return NULL;
}
net->country_code = country_code;
net->network_code = network_code;
net->num_bts = 0;
net->reject_cause = GSM48_REJECT_ROAMING_NOT_ALLOWED;
net->T3101 = GSM_T3101_DEFAULT;
net->T3113 = GSM_T3113_DEFAULT;
/* FIXME: initialize all other timers! */
/* default set of handover parameters */
net->handover.win_rxlev_avg = 10;
net->handover.win_rxqual_avg = 1;
net->handover.win_rxlev_avg_neigh = 10;
net->handover.pwr_interval = 6;
net->handover.pwr_hysteresis = 3;
net->handover.max_distance = 9999;
INIT_LLIST_HEAD(&net->trans_list);
INIT_LLIST_HEAD(&net->upqueue);
INIT_LLIST_HEAD(&net->bts_list);
net->stats.chreq.total = counter_alloc("net.chreq.total");
net->stats.chreq.no_channel = counter_alloc("net.chreq.no_channel");
net->stats.handover.attempted = counter_alloc("net.handover.attempted");
net->stats.handover.no_channel = counter_alloc("net.handover.no_channel");
net->stats.handover.timeout = counter_alloc("net.handover.timeout");
net->stats.handover.completed = counter_alloc("net.handover.completed");
net->stats.handover.failed = counter_alloc("net.handover.failed");
net->stats.loc_upd_type.attach = counter_alloc("net.loc_upd_type.attach");
net->stats.loc_upd_type.normal = counter_alloc("net.loc_upd_type.normal");
net->stats.loc_upd_type.periodic = counter_alloc("net.loc_upd_type.periodic");
net->stats.loc_upd_type.detach = counter_alloc("net.imsi_detach.count");
net->stats.loc_upd_resp.reject = counter_alloc("net.loc_upd_resp.reject");
net->stats.loc_upd_resp.accept = counter_alloc("net.loc_upd_resp.accept");
net->stats.paging.attempted = counter_alloc("net.paging.attempted");
net->stats.paging.detached = counter_alloc("net.paging.detached");
net->stats.paging.completed = counter_alloc("net.paging.completed");
net->stats.paging.expired = counter_alloc("net.paging.expired");
net->stats.sms.submitted = counter_alloc("net.sms.submitted");
net->stats.sms.no_receiver = counter_alloc("net.sms.no_receiver");
net->stats.sms.delivered = counter_alloc("net.sms.delivered");
net->stats.sms.rp_err_mem = counter_alloc("net.sms.rp_err_mem");
net->stats.sms.rp_err_other = counter_alloc("net.sms.rp_err_other");
net->stats.call.mo_setup = counter_alloc("net.call.mo_setup");
net->stats.call.mo_connect_ack = counter_alloc("net.call.mo_connect_ack");
net->stats.call.mt_setup = counter_alloc("net.call.mt_setup");
net->stats.call.mt_connect = counter_alloc("net.call.mt_connect");
net->stats.chan.rf_fail = counter_alloc("net.chan.rf_fail");
net->stats.chan.rll_err = counter_alloc("net.chan.rll_err");
net->stats.bts.oml_fail = counter_alloc("net.bts.oml_fail");
net->stats.bts.rsl_fail = counter_alloc("net.bts.rsl_fail");
net->mncc_recv = mncc_recv;
net->msc_data->msc_ip = talloc_strdup(net, "127.0.0.1");
net->msc_data->msc_port = 5000;
net->msc_data->ping_timeout = 20;
net->msc_data->pong_timeout = 5;
net->msc_data->core_ncc = -1;
net->msc_data->core_mcc = -1;
net->msc_data->rtp_base = 4000;
gsm_net_update_ctype(net);
return net;
}
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;
}
/* Get reference to a neighbor cell on a given BCCH ARFCN */
struct gsm_bts *gsm_bts_neighbor(const struct gsm_bts *bts,
u_int16_t arfcn, u_int8_t bsic)
{
struct gsm_bts *neigh;
/* FIXME: use some better heuristics here to determine which cell
* using this ARFCN really is closest to the target cell. For
* now we simply assume that each ARFCN will only be used by one
* cell */
llist_for_each_entry(neigh, &bts->network->bts_list, list) {
if (neigh->c0->arfcn == arfcn &&
neigh->bsic == bsic)
return neigh;
}
return NULL;
}
struct gsm_bts_trx *gsm_bts_trx_num(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(struct gsm_bts_trx *trx)
{
snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d)",
trx->bts->nr, trx->nr);
return ts2str;
}
char *gsm_ts_name(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;
}
char *gsm_lchan_name(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;
}
static const struct value_string bts_types[] = {
{ GSM_BTS_TYPE_UNKNOWN, "unknown" },
{ GSM_BTS_TYPE_BS11, "bs11" },
{ GSM_BTS_TYPE_NANOBTS, "nanobts" },
{ 0, NULL }
};
enum gsm_bts_type parse_btstype(const char *arg)
{
return get_string_value(bts_types, arg);
}
const char *btstype2str(enum gsm_bts_type type)
{
return get_value_string(bts_types, type);
}
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 auth_policy_names[] = {
{ GSM_AUTH_POLICY_CLOSED, "closed" },
{ GSM_AUTH_POLICY_ACCEPT_ALL, "accept-all" },
{ GSM_AUTH_POLICY_TOKEN, "token" },
{ 0, NULL }
};
enum gsm_auth_policy gsm_auth_policy_parse(const char *arg)
{
return get_string_value(auth_policy_names, arg);
}
const char *gsm_auth_policy_name(enum gsm_auth_policy policy)
{
return get_value_string(auth_policy_names, policy);
}
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(u_int8_t *buf, struct gsm_bts *bts)
{
struct gprs_ra_id raid;
gprs_ra_id_by_bts(&raid, bts);
return gsm48_construct_ra(buf, &raid);
}
static const struct value_string rrlp_mode_names[] = {
{ RRLP_MODE_NONE, "none" },
{ RRLP_MODE_MS_BASED, "ms-based" },
{ RRLP_MODE_MS_PREF, "ms-preferred" },
{ RRLP_MODE_ASS_PREF, "ass-preferred" },
{ 0, NULL }
};
enum rrlp_mode rrlp_mode_parse(const char *arg)
{
return get_string_value(rrlp_mode_names, arg);
}
const char *rrlp_mode_name(enum rrlp_mode mode)
{
return get_value_string(rrlp_mode_names, mode);
}
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)
{
return get_string_value(bts_gprs_mode_names, arg);
}
const char *bts_gprs_mode_name(enum bts_gprs_mode mode)
{
return get_value_string(bts_gprs_mode_names, mode);
}
struct gsm_meas_rep *lchan_next_meas_rep(struct gsm_lchan *lchan)
{
struct gsm_meas_rep *meas_rep;
meas_rep = &lchan->meas_rep[lchan->meas_rep_idx];
memset(meas_rep, 0, sizeof(*meas_rep));
meas_rep->lchan = lchan;
lchan->meas_rep_idx = (lchan->meas_rep_idx + 1)
% ARRAY_SIZE(lchan->meas_rep);
return meas_rep;
}
int gsm_btsmodel_set_feature(struct gsm_bts_model *bts, enum gsm_bts_features feat)
{
return bitvec_set_bit_pos(&bts->features, feat, 1);
}
int gsm_bts_has_feature(struct gsm_bts *bts, enum gsm_bts_features feat)
{
return bitvec_get_bit_pos(&bts->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;
switch (bts->type) {
case GSM_BTS_TYPE_NANOBTS:
/* Set the default OML Stream ID to 0xff */
bts->oml_tei = 0xff;
bts->c0->nominal_power = 23;
break;
case GSM_BTS_TYPE_BS11:
break;
case GSM_BTS_TYPE_UNKNOWN:
break;
}
return 0;
}
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