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osmo-msc/openbsc/src/libcommon/gsm_data_shared.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 <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 <openbsc/gsm_data.h>
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 gsm_pchant_names[10] = {
{ 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 struct value_string gsm_pchant_descs[10] = {
{ 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" },
{ 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);
}
const struct value_string gsm_lchant_names[6] = {
{ 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(gsm_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" },
{ 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_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->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;
lchan = &ts->lchan[l];
lchan->ts = ts;
lchan->nr = l;
lchan->type = GSM_LCHAN_NONE;
#ifndef ROLE_BSC
INIT_LLIST_HEAD(&lchan->sapi_cmds);
#endif
}
}
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(void *ctx)
{
struct gsm_bts *bts = talloc_zero(ctx, struct gsm_bts);
int i;
if (!bts)
return NULL;
bts->num_trx = 0;
INIT_LLIST_HEAD(&bts->trx_list);
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));
/* 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;
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)
{
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;
}
char *gsm_lchan_name(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 */
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;
}
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_ts2chan_nr(const struct gsm_bts_trx_ts *ts, uint8_t lchan_nr)
{
uint8_t cbits, chan_nr;
switch (ts->pchan) {
case GSM_PCHAN_TCH_F:
case GSM_PCHAN_PDCH:
case GSM_PCHAN_TCH_F_PDCH:
cbits = 0x01;
break;
case GSM_PCHAN_TCH_H:
cbits = 0x02;
cbits += lchan_nr;
break;
case GSM_PCHAN_CCCH_SDCCH4:
cbits = 0x04;
cbits += lchan_nr;
break;
case GSM_PCHAN_SDCCH8_SACCH8C:
cbits = 0x08;
cbits += lchan_nr;
break;
default:
case GSM_PCHAN_CCCH:
cbits = 0x10;
break;
}
chan_nr = (cbits << 3) | (ts->nr & 0x7);
return chan_nr;
}
uint8_t gsm_lchan2chan_nr(const struct gsm_lchan *lchan)
{
return gsm_ts2chan_nr(lchan->ts, lchan->nr);
}
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