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osmo-bsc/openbsc/src/bsc_init.c

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/* A hackish minimal BSC (+MSC +HLR) implementation */
/* (C) 2008-2009 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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <openbsc/gsm_data.h>
#include <openbsc/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 <openbsc/telnet_interface.h>
#include <openbsc/paging.h>
#include <openbsc/signal.h>
#include <openbsc/talloc.h>
/* global pointer to the gsm network data structure */
extern struct gsm_network *bsc_gsmnet;
extern int ipacc_rtp_direct;
static void patch_nm_tables(struct gsm_bts *bts);
static void patch_si_tables(struct gsm_bts *bts);
/* The following definitions are for OM and NM packets that we cannot yet
* generate by code but we just pass on */
// BTS Site Manager, SET ATTRIBUTES
/*
Object Class: BTS Site Manager
Instance 1: FF
Instance 2: FF
Instance 3: FF
SET ATTRIBUTES
sAbisExternalTime: 2007/09/08 14:36:11
omLAPDRelTimer: 30sec
shortLAPDIntTimer: 5sec
emergencyTimer1: 10 minutes
emergencyTimer2: 0 minutes
*/
unsigned char msg_1[] =
{
NM_MT_BS11_SET_ATTR, NM_OC_SITE_MANAGER, 0xFF, 0xFF, 0xFF,
NM_ATT_BS11_ABIS_EXT_TIME, 0x07,
0xD7, 0x09, 0x08, 0x0E, 0x24, 0x0B, 0xCE,
0x02,
0x00, 0x1E,
NM_ATT_BS11_SH_LAPD_INT_TIMER,
0x01, 0x05,
0x42, 0x02, 0x00, 0x0A,
0x44, 0x02, 0x00, 0x00
};
// BTS, SET BTS ATTRIBUTES
/*
Object Class: BTS
BTS relat. Number: 0
Instance 2: FF
Instance 3: FF
SET BTS ATTRIBUTES
bsIdentityCode / BSIC:
PLMN_colour_code: 7h
BS_colour_code: 7h
BTS Air Timer T3105: 4 ,unit 10 ms
btsIsHopping: FALSE
periodCCCHLoadIndication: 1sec
thresholdCCCHLoadIndication: 0%
cellAllocationNumber: 00h = GSM 900
enableInterferenceClass: 00h = Disabled
fACCHQual: 6 (FACCH stealing flags minus 1)
intaveParameter: 31 SACCH multiframes
interferenceLevelBoundaries:
Interference Boundary 1: 0Ah
Interference Boundary 2: 0Fh
Interference Boundary 3: 14h
Interference Boundary 4: 19h
Interference Boundary 5: 1Eh
mSTxPwrMax: 11
GSM range: 2=39dBm, 15=13dBm, stepsize 2 dBm
DCS1800 range: 0=30dBm, 15=0dBm, stepsize 2 dBm
PCS1900 range: 0=30dBm, 15=0dBm, stepsize 2 dBm
30=33dBm, 31=32dBm
ny1:
Maximum number of repetitions for PHYSICAL INFORMATION message (GSM 04.08): 20
powerOutputThresholds:
Out Power Fault Threshold: -10 dB
Red Out Power Threshold: - 6 dB
Excessive Out Power Threshold: 5 dB
rACHBusyThreshold: -127 dBm
rACHLoadAveragingSlots: 250 ,number of RACH burst periods
rfResourceIndicationPeriod: 125 SACCH multiframes
T200:
SDCCH: 044 in 5 ms
FACCH/Full rate: 031 in 5 ms
FACCH/Half rate: 041 in 5 ms
SACCH with TCH SAPI0: 090 in 10 ms
SACCH with SDCCH: 090 in 10 ms
SDCCH with SAPI3: 090 in 5 ms
SACCH with TCH SAPI3: 135 in 10 ms
tSync: 9000 units of 10 msec
tTrau: 9000 units of 10 msec
enableUmLoopTest: 00h = disabled
enableExcessiveDistance: 00h = Disabled
excessiveDistance: 64km
hoppingMode: 00h = baseband hopping
cellType: 00h = Standard Cell
BCCH ARFCN / bCCHFrequency: 1
*/
static unsigned char bs11_attr_bts[] =
{
NM_ATT_BSIC, HARDCODED_BSIC,
NM_ATT_BTS_AIR_TIMER, 0x04,
NM_ATT_BS11_BTSLS_HOPPING, 0x00,
NM_ATT_CCCH_L_I_P, 0x01,
NM_ATT_CCCH_L_T, 0x00,
NM_ATT_BS11_CELL_ALLOC_NR, NM_BS11_CANR_GSM,
NM_ATT_BS11_ENA_INTERF_CLASS, 0x01,
NM_ATT_BS11_FACCH_QUAL, 0x06,
/* interference avg. period in numbers of SACCH multifr */
NM_ATT_INTAVE_PARAM, 0x1F,
NM_ATT_INTERF_BOUND, 0x0A, 0x0F, 0x14, 0x19, 0x1E, 0x7B,
NM_ATT_CCCH_L_T, 0x23,
NM_ATT_GSM_TIME, 0x28, 0x00,
NM_ATT_ADM_STATE, 0x03,
NM_ATT_RACH_B_THRESH, 0x7F,
NM_ATT_LDAVG_SLOTS, 0x00, 0xFA,
NM_ATT_BS11_RF_RES_IND_PER, 0x7D,
NM_ATT_T200, 0x2C, 0x1F, 0x29, 0x5A, 0x5A, 0x5A, 0x87,
NM_ATT_BS11_TSYNC, 0x23, 0x28,
NM_ATT_BS11_TTRAU, 0x23, 0x28,
NM_ATT_TEST_DUR, 0x01, 0x00,
NM_ATT_OUTST_ALARM, 0x01, 0x00,
NM_ATT_BS11_EXCESSIVE_DISTANCE, 0x01, 0x40,
NM_ATT_BS11_HOPPING_MODE, 0x01, 0x00,
NM_ATT_BS11_PLL, 0x01, 0x00,
NM_ATT_BCCH_ARFCN, 0x00, HARDCODED_ARFCN/*0x01*/,
};
// Handover Recognition, SET ATTRIBUTES
/*
Illegal Contents GSM Formatted O&M Msg
Object Class: Handover Recognition
BTS relat. Number: 0
Instance 2: FF
Instance 3: FF
SET ATTRIBUTES
enableDelayPowerBudgetHO: 00h = Disabled
enableDistanceHO: 00h = Disabled
enableInternalInterCellHandover: 00h = Disabled
enableInternalIntraCellHandover: 00h = Disabled
enablePowerBudgetHO: 00h = Disabled
enableRXLEVHO: 00h = Disabled
enableRXQUALHO: 00h = Disabled
hoAveragingDistance: 8 SACCH multiframes
hoAveragingLev:
A_LEV_HO: 8 SACCH multiframes
W_LEV_HO: 1 SACCH multiframes
hoAveragingPowerBudget: 16 SACCH multiframes
hoAveragingQual:
A_QUAL_HO: 8 SACCH multiframes
W_QUAL_HO: 2 SACCH multiframes
hoLowerThresholdLevDL: (10 - 110) dBm
hoLowerThresholdLevUL: (5 - 110) dBm
hoLowerThresholdQualDL: 06h = 6.4% < BER < 12.8%
hoLowerThresholdQualUL: 06h = 6.4% < BER < 12.8%
hoThresholdLevDLintra : (20 - 110) dBm
hoThresholdLevULintra: (20 - 110) dBm
hoThresholdMsRangeMax: 20 km
nCell: 06h
timerHORequest: 3 ,unit 2 SACCH multiframes
*/
unsigned char msg_3[] =
{
NM_MT_BS11_SET_ATTR, NM_OC_BS11_HANDOVER, 0x00, 0xFF, 0xFF,
0xD0, 0x00, /* enableDelayPowerBudgetHO */
0x64, 0x00, /* enableDistanceHO */
0x67, 0x00, /* enableInternalInterCellHandover */
0x68, 0x00, /* enableInternalInterCellHandover */
0x6A, 0x00, /* enablePowerBudgetHO */
0x6C, 0x00, /* enableRXLEVHO */
0x6D, 0x00, /* enableRXQUALHO */
0x6F, 0x08, /* hoAveragingDistance */
0x70, 0x08, 0x01, /* hoAveragingLev */
0x71, 0x10, 0x10, 0x10,
0x72, 0x08, 0x02, /* hoAveragingQual */
0x73, 0x0A, /* hoLowerThresholdLevDL */
0x74, 0x05, /* hoLowerThresholdLevUL */
0x75, 0x06, /* hoLowerThresholdQualDL */
0x76, 0x06, /* hoLowerThresholdQualUL */
0x78, 0x14, /* hoThresholdLevDLintra */
0x79, 0x14, /* hoThresholdLevULintra */
0x7A, 0x14, /* hoThresholdMsRangeMax */
0x7D, 0x06, /* nCell */
NM_ATT_BS11_TIMER_HO_REQUEST, 0x03,
0x20, 0x01, 0x00,
0x45, 0x01, 0x00,
0x48, 0x01, 0x00,
0x5A, 0x01, 0x00,
0x5B, 0x01, 0x05,
0x5E, 0x01, 0x1A,
0x5F, 0x01, 0x20,
0x9D, 0x01, 0x00,
0x47, 0x01, 0x00,
0x5C, 0x01, 0x64,
0x5D, 0x01, 0x1E,
0x97, 0x01, 0x20,
0xF7, 0x01, 0x3C,
};
// Power Control, SET ATTRIBUTES
/*
Object Class: Power Control
BTS relat. Number: 0
Instance 2: FF
Instance 3: FF
SET ATTRIBUTES
enableMsPowerControl: 00h = Disabled
enablePowerControlRLFW: 00h = Disabled
pcAveragingLev:
A_LEV_PC: 4 SACCH multiframes
W_LEV_PC: 1 SACCH multiframes
pcAveragingQual:
A_QUAL_PC: 4 SACCH multiframes
W_QUAL_PC: 2 SACCH multiframes
pcLowerThresholdLevDL: 0Fh
pcLowerThresholdLevUL: 0Ah
pcLowerThresholdQualDL: 05h = 3.2% < BER < 6.4%
pcLowerThresholdQualUL: 05h = 3.2% < BER < 6.4%
pcRLFThreshold: 0Ch
pcUpperThresholdLevDL: 14h
pcUpperThresholdLevUL: 0Fh
pcUpperThresholdQualDL: 04h = 1.6% < BER < 3.2%
pcUpperThresholdQualUL: 04h = 1.6% < BER < 3.2%
powerConfirm: 2 ,unit 2 SACCH multiframes
powerControlInterval: 2 ,unit 2 SACCH multiframes
powerIncrStepSize: 02h = 4 dB
powerRedStepSize: 01h = 2 dB
radioLinkTimeoutBs: 64 SACCH multiframes
enableBSPowerControl: 00h = disabled
*/
unsigned char msg_4[] =
{
NM_MT_BS11_SET_ATTR, NM_OC_BS11_PWR_CTRL, 0x00, 0xFF, 0xFF,
NM_ATT_BS11_ENA_MS_PWR_CTRL, 0x00,
NM_ATT_BS11_ENA_PWR_CTRL_RLFW, 0x00,
0x7E, 0x04, 0x01, /* pcAveragingLev */
0x7F, 0x04, 0x02, /* pcAveragingQual */
0x80, 0x0F, /* pcLowerThresholdLevDL */
0x81, 0x0A, /* pcLowerThresholdLevUL */
0x82, 0x05, /* pcLowerThresholdQualDL */
0x83, 0x05, /* pcLowerThresholdQualUL */
0x84, 0x0C, /* pcRLFThreshold */
0x85, 0x14, /* pcUpperThresholdLevDL */
0x86, 0x0F, /* pcUpperThresholdLevUL */
0x87, 0x04, /* pcUpperThresholdQualDL */
0x88, 0x04, /* pcUpperThresholdQualUL */
0x89, 0x02, /* powerConfirm */
0x8A, 0x02, /* powerConfirmInterval */
0x8B, 0x02, /* powerIncrStepSize */
0x8C, 0x01, /* powerRedStepSize */
0x8D, 0x40, /* radioLinkTimeoutBs */
0x65, 0x01, 0x00 // set to 0x01 to enable BSPowerControl
};
// Transceiver, SET TRX ATTRIBUTES (TRX 0)
/*
Object Class: Transceiver
BTS relat. Number: 0
Tranceiver number: 0
Instance 3: FF
SET TRX ATTRIBUTES
aRFCNList (HEX): 0001
txPwrMaxReduction: 00h = 30dB
radioMeasGran: 254 SACCH multiframes
radioMeasRep: 01h = enabled
memberOfEmergencyConfig: 01h = TRUE
trxArea: 00h = TRX doesn't belong to a concentric cell
*/
static unsigned char bs11_attr_radio[] =
{
NM_ATT_ARFCN_LIST, 0x01, 0x00, HARDCODED_ARFCN /*0x01*/,
NM_ATT_RF_MAXPOWR_R, 0x00,
NM_ATT_BS11_RADIO_MEAS_GRAN, 0x01, 0x05,
NM_ATT_BS11_RADIO_MEAS_REP, 0x01, 0x01,
NM_ATT_BS11_EMRG_CFG_MEMBER, 0x01, 0x01,
NM_ATT_BS11_TRX_AREA, 0x01, 0x00,
};
static unsigned char nanobts_attr_bts[] = {
NM_ATT_INTERF_BOUND, 0x55, 0x5b, 0x61, 0x67, 0x6d, 0x73,
/* interference avg. period in numbers of SACCH multifr */
NM_ATT_INTAVE_PARAM, 0x06,
/* conn fail based on SACCH error rate */
NM_ATT_CONN_FAIL_CRIT, 0x00, 0x02, 0x01, 0x10,
NM_ATT_T200, 0x1e, 0x24, 0x24, 0xa8, 0x34, 0x21, 0xa8,
NM_ATT_MAX_TA, 0x3f,
NM_ATT_OVERL_PERIOD, 0x00, 0x01, 10, /* seconds */
NM_ATT_CCCH_L_T, 10, /* percent */
NM_ATT_CCCH_L_I_P, 1, /* seconds */
NM_ATT_RACH_B_THRESH, 10, /* busy threshold in - dBm */
NM_ATT_LDAVG_SLOTS, 0x03, 0xe8, /* rach load averaging 1000 slots */
NM_ATT_BTS_AIR_TIMER, 128, /* miliseconds */
NM_ATT_NY1, 10, /* 10 retransmissions of physical config */
NM_ATT_BCCH_ARFCN, HARDCODED_ARFCN >> 8, HARDCODED_ARFCN & 0xff,
NM_ATT_BSIC, HARDCODED_BSIC,
};
static unsigned char nanobts_attr_radio[] = {
NM_ATT_RF_MAXPOWR_R, 0x0c, /* number of -2dB reduction steps / Pn */
NM_ATT_ARFCN_LIST, 0x00, 0x02, HARDCODED_ARFCN >> 8, HARDCODED_ARFCN & 0xff,
};
/* Callback function to be called whenever we get a GSM 12.21 state change event */
int nm_state_event(enum nm_evt evt, u_int8_t obj_class, void *obj,
struct gsm_nm_state *old_state, struct gsm_nm_state *new_state)
{
struct gsm_bts *bts;
struct gsm_bts_trx *trx;
struct gsm_bts_trx_ts *ts;
/* This event-driven BTS setup is currently only required on nanoBTS */
/* EVT_STATECHG_ADM is called after we call chg_adm_state() and would create
* endless loop */
if (evt != EVT_STATECHG_OPER)
return 0;
switch (obj_class) {
case NM_OC_SITE_MANAGER:
bts = container_of(obj, struct gsm_bts, site_mgr);
if (new_state->operational == 2 &&
new_state->availability == NM_AVSTATE_OK)
abis_nm_opstart(bts, obj_class, 0xff, 0xff, 0xff);
break;
case NM_OC_BTS:
bts = obj;
if (new_state->availability == NM_AVSTATE_DEPENDENCY) {
patch_nm_tables(bts);
abis_nm_set_bts_attr(bts, nanobts_attr_bts,
sizeof(nanobts_attr_bts));
abis_nm_chg_adm_state(bts, obj_class,
bts->bts_nr, 0xff, 0xff,
NM_STATE_UNLOCKED);
abis_nm_opstart(bts, obj_class,
bts->bts_nr, 0xff, 0xff);
}
break;
case NM_OC_CHANNEL:
ts = obj;
trx = ts->trx;
if (new_state->operational == 1 &&
new_state->availability == NM_AVSTATE_DEPENDENCY) {
patch_nm_tables(trx->bts);
enum abis_nm_chan_comb ccomb =
abis_nm_chcomb4pchan(ts->pchan);
abis_nm_set_channel_attr(ts, ccomb);
abis_nm_chg_adm_state(trx->bts, obj_class,
trx->bts->bts_nr, trx->nr, ts->nr,
NM_STATE_UNLOCKED);
abis_nm_opstart(trx->bts, obj_class,
trx->bts->bts_nr, trx->nr, ts->nr);
}
break;
case NM_OC_RADIO_CARRIER:
trx = obj;
if (new_state->operational == 1 &&
new_state->availability == NM_AVSTATE_OFF_LINE) {
/* Patch ARFCN into radio attribute */
nanobts_attr_radio[5] &= 0xf0;
nanobts_attr_radio[5] |= trx->arfcn >> 8;
nanobts_attr_radio[6] = trx->arfcn & 0xff;
abis_nm_set_radio_attr(trx, nanobts_attr_radio,
sizeof(nanobts_attr_radio));
abis_nm_chg_adm_state(trx->bts, obj_class,
trx->bts->bts_nr, trx->nr, 0xff,
NM_STATE_UNLOCKED);
abis_nm_opstart(trx->bts, obj_class, trx->bts->bts_nr,
trx->nr, 0xff);
}
if (new_state->operational == 1 &&
new_state->availability == NM_AVSTATE_OK)
abis_nm_opstart(trx->bts, obj_class, trx->bts->bts_nr,
trx->nr, 0xff);
break;
case NM_OC_BASEB_TRANSC:
trx = container_of(obj, struct gsm_bts_trx, bb_transc);
if (new_state->operational == 1 &&
new_state->availability == NM_AVSTATE_DEPENDENCY) {
abis_nm_chg_adm_state(trx->bts, obj_class,
trx->bts->bts_nr, trx->nr, 0xff,
NM_STATE_UNLOCKED);
abis_nm_opstart(trx->bts, obj_class,
trx->bts->bts_nr, trx->nr, 0xff);
/* TRX software is active, tell it to initiate RSL Link */
abis_nm_ipaccess_rsl_connect(trx, 0, 3003, trx->rsl_tei);
}
break;
default:
break;
}
return 0;
}
/* Callback function to be called every time we receive a 12.21 SW activated report */
static int sw_activ_rep(struct msgb *mb)
{
struct abis_om_fom_hdr *foh = msgb_l3(mb);
struct gsm_bts *bts = mb->trx->bts;
struct gsm_bts_trx *trx = gsm_bts_trx_num(bts, foh->obj_inst.trx_nr);
switch (foh->obj_class) {
}
return 0;
}
/* Callback function for NACK on the OML NM */
static int oml_msg_nack(int mt)
{
if (mt == NM_MT_SET_BTS_ATTR_NACK) {
fprintf(stderr, "Failed to set BTS attributes. That is fatal. "
"Was the bts type and frequency properly specified?\n");
exit(-1);
}
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)
{
switch (signal) {
case S_NM_SW_ACTIV_REP:
return sw_activ_rep(signal_data);
case S_NM_NACK:
return oml_msg_nack((int)signal_data);
default:
break;
}
return 0;
}
static void bootstrap_om_nanobts(struct gsm_bts *bts)
{
/* We don't do callback based bootstrapping, but event driven (see above) */
}
static void nm_reconfig_ts(struct gsm_bts_trx_ts *ts)
{
enum abis_nm_chan_comb ccomb = abis_nm_chcomb4pchan(ts->pchan);
struct gsm_e1_subslot *e1l = &ts->e1_link;
abis_nm_set_channel_attr(ts, ccomb);
if (is_ipaccess_bts(ts->trx->bts))
return;
switch (ts->pchan) {
case GSM_PCHAN_TCH_F:
case GSM_PCHAN_TCH_H:
abis_nm_conn_terr_traf(ts, e1l->e1_nr, e1l->e1_ts,
e1l->e1_ts_ss);
break;
default:
break;
}
}
static void nm_reconfig_trx(struct gsm_bts_trx *trx)
{
struct gsm_e1_subslot *e1l = &trx->rsl_e1_link;
int i;
patch_nm_tables(trx->bts);
switch (trx->bts->type) {
case GSM_BTS_TYPE_BS11:
/* FIXME: discover this by fetching an attribute */
#if 0
trx->nominal_power = 15; /* 15dBm == 30mW PA configuration */
#else
trx->nominal_power = 24; /* 24dBm == 250mW PA configuration */
#endif
abis_nm_conn_terr_sign(trx, e1l->e1_nr, e1l->e1_ts,
e1l->e1_ts_ss);
abis_nm_establish_tei(trx->bts, trx->nr, e1l->e1_nr,
e1l->e1_ts, e1l->e1_ts_ss, trx->rsl_tei);
/* Set Radio Attributes */
if (trx == trx->bts->c0)
abis_nm_set_radio_attr(trx, bs11_attr_radio,
sizeof(bs11_attr_radio));
else {
u_int8_t trx1_attr_radio[sizeof(bs11_attr_radio)];
u_int8_t arfcn_low = trx->arfcn & 0xff;
u_int8_t arfcn_high = (trx->arfcn >> 8) & 0x0f;
memcpy(trx1_attr_radio, bs11_attr_radio,
sizeof(trx1_attr_radio));
/* patch ARFCN into TRX Attributes */
trx1_attr_radio[2] &= 0xf0;
trx1_attr_radio[2] |= arfcn_high;
trx1_attr_radio[3] = arfcn_low;
abis_nm_set_radio_attr(trx, trx1_attr_radio,
sizeof(trx1_attr_radio));
}
break;
case GSM_BTS_TYPE_NANOBTS:
switch (trx->bts->band) {
case GSM_BAND_850:
case GSM_BAND_900:
trx->nominal_power = 20;
break;
case GSM_BAND_1800:
case GSM_BAND_1900:
trx->nominal_power = 23;
break;
default:
fprintf(stderr, "Unsupported nanoBTS GSM band %s\n",
gsm_band_name(trx->bts->band));
break;
}
break;
default:
break;
}
for (i = 0; i < TRX_NR_TS; i++)
nm_reconfig_ts(&trx->ts[i]);
}
static void nm_reconfig_bts(struct gsm_bts *bts)
{
struct gsm_bts_trx *trx;
switch (bts->type) {
case GSM_BTS_TYPE_BS11:
abis_nm_raw_msg(bts, sizeof(msg_1), msg_1); /* set BTS SiteMgr attr*/
abis_nm_set_bts_attr(bts, bs11_attr_bts, sizeof(bs11_attr_bts));
abis_nm_raw_msg(bts, sizeof(msg_3), msg_3); /* set BTS handover attr */
abis_nm_raw_msg(bts, sizeof(msg_4), msg_4); /* set BTS power control attr */
break;
default:
break;
}
llist_for_each_entry(trx, &bts->trx_list, list)
nm_reconfig_trx(trx);
}
static void bootstrap_om_bs11(struct gsm_bts *bts)
{
/* stop sending event reports */
abis_nm_event_reports(bts, 0);
/* begin DB transmission */
abis_nm_bs11_db_transmission(bts, 1);
/* end DB transmission */
abis_nm_bs11_db_transmission(bts, 0);
/* Reset BTS Site manager resource */
abis_nm_bs11_reset_resource(bts);
/* begin DB transmission */
abis_nm_bs11_db_transmission(bts, 1);
/* reconfigure BTS with all TRX and all TS */
nm_reconfig_bts(bts);
/* end DB transmission */
abis_nm_bs11_db_transmission(bts, 0);
/* Reset BTS Site manager resource */
abis_nm_bs11_reset_resource(bts);
/* restart sending event reports */
abis_nm_event_reports(bts, 1);
}
static void bootstrap_om(struct gsm_bts *bts)
{
fprintf(stdout, "bootstrapping OML for BTS %u\n", bts->nr);
switch (bts->type) {
case GSM_BTS_TYPE_BS11:
bootstrap_om_bs11(bts);
break;
case GSM_BTS_TYPE_NANOBTS:
bootstrap_om_nanobts(bts);
break;
default:
fprintf(stderr, "Unable to bootstrap OML: Unknown BTS type %d\n", bts->type);
}
}
static int shutdown_om(struct gsm_bts *bts)
{
fprintf(stdout, "shutting down OML for BTS %u\n", bts->nr);
/* stop sending event reports */
abis_nm_event_reports(bts, 0);
/* begin DB transmission */
abis_nm_bs11_db_transmission(bts, 1);
/* end DB transmission */
abis_nm_bs11_db_transmission(bts, 0);
/* Reset BTS Site manager resource */
abis_nm_bs11_reset_resource(bts);
return 0;
}
int bsc_shutdown_net(struct gsm_network *net)
{
struct gsm_bts *bts;
llist_for_each_entry(bts, &net->bts_list, list) {
int rc;
rc = shutdown_om(bts);
if (rc < 0)
return rc;
}
return 0;
}
struct bcch_info {
u_int8_t type;
u_int8_t len;
const u_int8_t *data;
};
/*
SYSTEM INFORMATION TYPE 1
Cell channel description
Format-ID bit map 0
CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01
RACH Control Parameters
maximum 7 retransmissions
8 slots used to spread transmission
cell not barred for access
call reestablishment not allowed
Access Control Class = 0000
*/
static u_int8_t si1[] = {
/* header */0x55, 0x06, 0x19,
/* ccdesc */0x04 /*0x00*/, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /*0x01*/,
/* rach */0xD5, 0x04, 0x00,
/* s1 reset*/0x2B
};
/*
SYSTEM INFORMATION TYPE 2
Neighbour Cells Description
EXT-IND: Carries the complete BA
BA-IND = 0
Format-ID bit map 0
CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
NCC permitted (NCC) = FF
RACH Control Parameters
maximum 7 retransmissions
8 slots used to spread transmission
cell not barred for access
call reestablishment not allowed
Access Control Class = 0000
*/
static u_int8_t si2[] = {
/* header */0x59, 0x06, 0x1A,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* ncc */0xFF,
/* rach*/0xD5, 0x04, 0x00
};
/*
SYSTEM INFORMATION TYPE 3
Cell identity = 00001 (1h)
Location area identification
Mobile Country Code (MCC): 001
Mobile Network Code (MNC): 01
Location Area Code (LAC): 00001 (1h)
Control Channel Description
Attach-detach: MSs in the cell are not allowed to apply IMSI attach /detach
0 blocks reserved for access grant
1 channel used for CCCH, with SDCCH
5 multiframes period for PAGING REQUEST
Time-out T3212 = 0
Cell Options BCCH
Power control indicator: not set
MSs shall not use uplink DTX
Radio link timeout = 36
Cell Selection Parameters
Cell reselect hysteresis = 6 dB RXLEV hysteresis for LA re-selection
max.TX power level MS may use for CCH = 2 <- according to GSM05.05 39dBm (max)
Additional Reselect Parameter Indication (ACS) = only SYSTEM INFO 4: The SI rest octets, if present, shall be used to derive the value of PI and possibly C2 parameters
Half rate support (NECI): New establishment causes are not supported
min.RX signal level for MS = 0
RACH Control Parameters
maximum 7 retransmissions
8 slots used to spread transmission
cell not barred for access
call reestablishment not allowed
Access Control Class = 0000
SI 3 Rest Octets (not present)
*/
static u_int8_t si3[] = {
/* header */0x49, 0x06, 0x1B,
/* cell */0x00, 0x01,
/* lai */0x00, 0xF1, 0x10, 0x00, 0x01,
/* desc */0x01, 0x03, 0x00,
/* option*/0x28,
/* selection*/0x62, 0x00,
/* rach */0xD5, 0x04, 0x00,
/* rest */ 0x2B, 0x2B, 0x2B, 0x2B
};
/*
SYSTEM INFORMATION TYPE 4
Location area identification
Mobile Country Code (MCC): 001
Mobile Network Code (MNC): 01
Location Area Code (LAC): 00001 (1h)
Cell Selection Parameters
Cell reselect hysteresis = 6 dB RXLEV hysteresis for LA re-selection
max.TX power level MS may use for CCH = 2
Additional Reselect Parameter Indication (ACS) = only SYSTEM INFO 4: The SI rest octets, if present, shall be used to derive the value of PI and possibly C2 parameters
Half rate support (NECI): New establishment causes are not supported
min.RX signal level for MS = 0
RACH Control Parameters
maximum 7 retransmissions
8 slots used to spread transmission
cell not barred for access
call reestablishment not allowed
Access Control Class = 0000
CBCH Channel Description
Type = SDCCH/4[2]
Timeslot Number: 0
Training Sequence Code: 7h
ARFCN: 1
SI Rest Octets (not present)
*/
static u_int8_t si4[] = {
/* header */0x41, 0x06, 0x1C,
/* lai */0x00, 0xF1, 0x10, 0x00, 0x01,
/* sel */0x62, 0x00,
/* rach*/0xD5, 0x04, 0x00,
/* cbch chan desc */ 0x64, 0x30, 0xE0, HARDCODED_ARFCN/*0x01*/,
/* rest octets */ 0x2B, 0x2B, 0x2B, 0x2B, 0x2B, 0x2B
};
/*
SYSTEM INFORMATION TYPE 5
Neighbour Cells Description
EXT-IND: Carries the complete BA
BA-IND = 0
Format-ID bit map 0
CA-ARFCN Bit 124...001 (Hex): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
*/
static u_int8_t si5[] = {
/* header without l2 len*/0x06, 0x1D,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
// SYSTEM INFORMATION TYPE 6
/*
SACCH FILLING
System Info Type: SYSTEM INFORMATION 6
L3 Information (Hex): 06 1E 00 01 xx xx 10 00 01 28 FF
SYSTEM INFORMATION TYPE 6
Cell identity = 00001 (1h)
Location area identification
Mobile Country Code (MCC): 001
Mobile Network Code (MNC): 01
Location Area Code (LAC): 00001 (1h)
Cell Options SACCH
Power control indicator: not set
MSs shall not use uplink DTX on a TCH-F. MS shall not use uplink DTX on TCH-H.
Radio link timeout = 36
NCC permitted (NCC) = FF
*/
static u_int8_t si6[] = {
/* header */0x06, 0x1E,
/* cell id*/ 0x00, 0x01,
/* lai */ 0x00, 0xF1, 0x10, 0x00, 0x01,
/* options */ 0x28,
/* ncc */ 0xFF,
};
static const struct bcch_info bcch_infos[] = {
{
.type = RSL_SYSTEM_INFO_1,
.len = sizeof(si1),
.data = si1,
}, {
.type = RSL_SYSTEM_INFO_2,
.len = sizeof(si2),
.data = si2,
}, {
.type = RSL_SYSTEM_INFO_3,
.len = sizeof(si3),
.data = si3,
}, {
.type = RSL_SYSTEM_INFO_4,
.len = sizeof(si4),
.data = si4,
},
};
static_assert(sizeof(si1) == sizeof(struct gsm48_system_information_type_1), type1)
static_assert(sizeof(si2) == sizeof(struct gsm48_system_information_type_2), type2)
static_assert(sizeof(si3) == sizeof(struct gsm48_system_information_type_3), type3)
static_assert(sizeof(si4) >= sizeof(struct gsm48_system_information_type_4), type4)
static_assert(sizeof(si5) == sizeof(struct gsm48_system_information_type_5), type5)
static_assert(sizeof(si6) >= sizeof(struct gsm48_system_information_type_6), type6)
/* set all system information types */
static int set_system_infos(struct gsm_bts_trx *trx)
{
int i;
if (trx == trx->bts->c0) {
for (i = 0; i < ARRAY_SIZE(bcch_infos); i++) {
rsl_bcch_info(trx, bcch_infos[i].type,
bcch_infos[i].data,
bcch_infos[i].len);
}
}
rsl_sacch_filling(trx, RSL_SYSTEM_INFO_5, si5, sizeof(si5));
rsl_sacch_filling(trx, RSL_SYSTEM_INFO_6, si6, sizeof(si6));
return 0;
}
/*
* Patch the various SYSTEM INFORMATION tables to update
* the LAI
*/
static void patch_nm_tables(struct gsm_bts *bts)
{
u_int8_t arfcn_low = bts->c0->arfcn & 0xff;
u_int8_t arfcn_high = (bts->c0->arfcn >> 8) & 0x0f;
/* patch ARFCN into BTS Attributes */
bs11_attr_bts[69] &= 0xf0;
bs11_attr_bts[69] |= arfcn_high;
bs11_attr_bts[70] = arfcn_low;
nanobts_attr_bts[42] &= 0xf0;
nanobts_attr_bts[42] |= arfcn_high;
nanobts_attr_bts[43] = arfcn_low;
/* patch ARFCN into TRX Attributes */
bs11_attr_radio[2] &= 0xf0;
bs11_attr_radio[2] |= arfcn_high;
bs11_attr_radio[3] = arfcn_low;
/* patch BSIC */
bs11_attr_bts[1] = bts->bsic;
nanobts_attr_bts[sizeof(nanobts_attr_bts)-1] = bts->bsic;
/* patch the power reduction */
bs11_attr_radio[5] = bts->c0->max_power_red / 2;
nanobts_attr_radio[1] = bts->c0->max_power_red / 2;
}
/*
* Patch the various SYSTEM INFORMATION tables to update
* the LAI
*/
static void patch_si_tables(struct gsm_bts *bts)
{
u_int8_t arfcn_low = bts->c0->arfcn & 0xff;
u_int8_t arfcn_high = (bts->c0->arfcn >> 8) & 0x0f;
/* covert the raw packet to the struct */
struct gsm48_system_information_type_1 *type_1 =
(struct gsm48_system_information_type_1*)&si1;
struct gsm48_system_information_type_2 *type_2 =
(struct gsm48_system_information_type_2*)&si2;
struct gsm48_system_information_type_3 *type_3 =
(struct gsm48_system_information_type_3*)&si3;
struct gsm48_system_information_type_4 *type_4 =
(struct gsm48_system_information_type_4*)&si4;
struct gsm48_system_information_type_6 *type_6 =
(struct gsm48_system_information_type_6*)&si6;
struct gsm48_loc_area_id lai;
gsm0408_generate_lai(&lai, bts->network->country_code,
bts->network->network_code,
bts->location_area_code);
/* assign the MCC and MNC */
type_3->lai = lai;
type_4->lai = lai;
type_6->lai = lai;
/* set the CI */
type_3->cell_identity = htons(bts->cell_identity);
type_6->cell_identity = htons(bts->cell_identity);
type_4->data[2] &= 0xf0;
type_4->data[2] |= arfcn_high;
type_4->data[3] = arfcn_low;
/* patch Control Channel Description 10.5.2.11 */
type_3->control_channel_desc = bts->chan_desc;
/* patch TSC */
si4[15] &= ~0xe0;
si4[15] |= (bts->tsc & 7) << 5;
/* patch MS max power for CCH */
type_4->cell_sel_par.ms_txpwr_max_ccch =
ms_pwr_ctl_lvl(bts->band, bts->ms_max_power);
if (bts->cell_barred) {
type_1->rach_control.cell_bar = 1;
type_2->rach_control.cell_bar = 1;
type_3->rach_control.cell_bar = 1;
type_4->rach_control.cell_bar = 1;
} else {
type_1->rach_control.cell_bar = 0;
type_2->rach_control.cell_bar = 0;
type_3->rach_control.cell_bar = 0;
type_4->rach_control.cell_bar = 0;
}
}
static void bootstrap_rsl(struct gsm_bts_trx *trx)
{
fprintf(stdout, "bootstrapping RSL for BTS/TRX (%u/%u) "
"using MCC=%u MNC=%u BSIC=%u TSC=%u\n",
trx->bts->nr, trx->nr, bsc_gsmnet->country_code,
bsc_gsmnet->network_code, trx->bts->bsic, trx->bts->tsc);
patch_si_tables(trx->bts);
set_system_infos(trx);
}
void input_event(int event, enum e1inp_sign_type type, struct gsm_bts_trx *trx)
{
switch (event) {
case EVT_E1_TEI_UP:
switch (type) {
case E1INP_SIGN_OML:
bootstrap_om(trx->bts);
break;
case E1INP_SIGN_RSL:
bootstrap_rsl(trx);
break;
default:
break;
}
break;
case EVT_E1_TEI_DN:
fprintf(stderr, "Lost some E1 TEI link\n");
/* FIXME: deal with TEI or L1 link loss */
break;
default:
break;
}
}
static int bootstrap_bts(struct gsm_bts *bts)
{
switch (bts->band) {
case GSM_BAND_1800:
if (bts->c0->arfcn < 512 || bts->c0->arfcn > 885) {
fprintf(stderr, "GSM1800 channel must be between 512-885.\n");
return -EINVAL;
}
break;
case GSM_BAND_1900:
if (bts->c0->arfcn < 512 || bts->c0->arfcn > 810) {
fprintf(stderr, "GSM1900 channel must be between 512-810.\n");
return -EINVAL;
}
break;
case GSM_BAND_900:
if (bts->c0->arfcn < 1 || bts->c0->arfcn > 124) {
fprintf(stderr, "GSM900 channel must be between 1-124.\n");
return -EINVAL;
}
break;
default:
fprintf(stderr, "Unsupported frequency band.\n");
return -EINVAL;
}
/* Control Channel Description */
bts->chan_desc.att = 1;
bts->chan_desc.ccch_conf = RSL_BCCH_CCCH_CONF_1_C;
bts->chan_desc.bs_pa_mfrms = RSL_BS_PA_MFRMS_5;
/* T3212 is set from vty/config */
paging_init(bts);
return 0;
}
int bsc_bootstrap_network(int (*mncc_recv)(struct gsm_network *, int, void *),
const char *config_file)
{
struct gsm_bts *bts;
int rc;
/* initialize our data structures */
bsc_gsmnet = gsm_network_init(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");
telnet_init(bsc_gsmnet, 4242);
rc = vty_read_config_file(config_file);
if (rc < 0) {
fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file);
return rc;
}
register_signal_handler(SS_NM, nm_sig_cb, NULL);
llist_for_each_entry(bts, &bsc_gsmnet->bts_list, list) {
bootstrap_bts(bts);
if (!is_ipaccess_bts(bts))
rc = e1_reconfig_bts(bts);
if (rc < 0)
exit (1);
}
/* initialize nanoBTS support omce */
rc = ipaccess_setup(bsc_gsmnet);
return 0;
}
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