/* A hackish minimal BSC (+MSC +HLR) implementation */ /* (C) 2008-2009 by Harald Welte * (C) 2009 by Holger Hans Peter Freyther * 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 #include #include #include #include #include #include #include #include #include #include /* 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(u_int8_t 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) { u_int8_t *msg_type; switch (signal) { case S_NM_SW_ACTIV_REP: return sw_activ_rep(signal_data); case S_NM_NACK: msg_type = signal_data; return oml_msg_nack(*msg_type); 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); /* Set NECI to influence channel request */ type_3->cell_sel_par.neci = bts->network->neci; type_4->cell_sel_par.neci = bts->network->neci; 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; }