272 lines
8.4 KiB
C
272 lines
8.4 KiB
C
/* ip.access nanoBTS specific code, OML attribute table generator */
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/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved
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*
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* Author: Philipp Maier
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <arpa/inet.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/bsc/gsm_data.h>
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#include <osmocom/bsc/abis_nm.h>
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#include <osmocom/bsc/bts.h>
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#include <osmocom/gsm/bts_features.h>
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/* 3GPP TS 52.021 section 8.6.1 Set BTS Attributes */
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struct msgb *nanobts_gen_set_bts_attr(struct gsm_bts *bts)
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{
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struct msgb *msgb;
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uint8_t buf[256];
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int rlt;
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msgb = msgb_alloc(1024, "nanobts_attr_bts");
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if (!msgb)
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return NULL;
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/* Interference level Boundaries: 0 .. X5 (3GPP TS 52.021 sec 9.4.25) */
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msgb_tv_fixed_put(msgb, NM_ATT_INTERF_BOUND,
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sizeof(bts->interf_meas_params_cfg.bounds_dbm),
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&bts->interf_meas_params_cfg.bounds_dbm[0]);
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/* Intave: Interference Averaging period (3GPP TS 52.021 sec 9.4.24) */
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msgb_tv_put(msgb, NM_ATT_INTAVE_PARAM, bts->interf_meas_params_cfg.avg_period);
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/* Connection Failure Criterion (3GPP TS 52.021 sec 9.4.14) */
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rlt = gsm_bts_get_radio_link_timeout(bts);
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if (rlt == -1) {
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/* Osmocom extension: Use infinite radio link timeout */
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buf[0] = 0xFF;
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buf[1] = 0x00;
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} else {
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/* conn fail based on SACCH error rate */
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buf[0] = 0x01;
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buf[1] = rlt;
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}
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msgb_tl16v_put(msgb, NM_ATT_CONN_FAIL_CRIT, 2, buf);
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/* T200 (3GPP TS 52.021 sec 9.4.53) */
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memcpy(buf, "\x1e\x24\x24\xa8\x34\x21\xa8", 7);
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msgb_tv_fixed_put(msgb, NM_ATT_T200, 7, buf);
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/* Max Timing Advance (3GPP TS 52.021 sec 9.4.31) */
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msgb_tv_put(msgb, NM_ATT_MAX_TA, 0x3f);
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/* Overload Period (3GPP TS 52.021 sec 9.4.39), seconds */
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memcpy(buf, "\x00\x01\x0a", 3);
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msgb_tv_fixed_put(msgb, NM_ATT_OVERL_PERIOD, 3, buf);
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/* CCCH Load Threshold (3GPP TS 12.21 sec 9.4.12), percent */
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msgb_tv_put(msgb, NM_ATT_CCCH_L_T, bts->ccch_load_ind_thresh);
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/* CCCH Load Indication Period (3GPP TS 12.21 sec 9.4.11), seconds */
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msgb_tv_put(msgb, NM_ATT_CCCH_L_I_P, bts->ccch_load_ind_period);
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/* RACH Busy Threshold (3GPP TS 12.21 sec 9.4.44), -dBm */
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buf[0] = 90; /* -90 dBm as default "busy" threshold */
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if (bts->rach_b_thresh != -1)
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buf[0] = bts->rach_b_thresh & 0xff;
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msgb_tv_put(msgb, NM_ATT_RACH_B_THRESH, buf[0]);
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/* RACH Load Averaging Slots (3GPP TS 12.21 sec 9.4.45), 1000 slots */
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buf[0] = 0x03;
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buf[1] = 0xe8;
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if (bts->rach_ldavg_slots != -1) {
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buf[0] = (bts->rach_ldavg_slots >> 8) & 0x0f;
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buf[1] = bts->rach_ldavg_slots & 0xff;
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}
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msgb_tv_fixed_put(msgb, NM_ATT_LDAVG_SLOTS, 2, buf);
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/* BTS Air Timer (3GPP TS 12.21 sec 9.4.10), 10 milliseconds */
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msgb_tv_put(msgb, NM_ATT_BTS_AIR_TIMER, osmo_tdef_get(bts->network->T_defs, 3105, OSMO_TDEF_MS, -1)/10);
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/* NY1 (3GPP TS 12.21 sec 9.4.37), 10 retransmissions of physical config */
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msgb_tv_put(msgb, NM_ATT_NY1, 10);
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/* BCCH ARFCN (3GPP TS 12.21 sec 9.4.8) */
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buf[0] = (bts->c0->arfcn >> 8) & 0x0f;
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buf[1] = bts->c0->arfcn & 0xff;
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msgb_tv_fixed_put(msgb, NM_ATT_BCCH_ARFCN, 2, buf);
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/* BSIC (3GPP TS 12.21 sec 9.4.9) */
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msgb_tv_put(msgb, NM_ATT_BSIC, bts->bsic);
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abis_nm_ipaccess_cgi(buf, bts);
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msgb_tl16v_put(msgb, NM_ATT_IPACC_CGI, 7, buf);
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return msgb;
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}
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struct msgb *nanobts_gen_set_nse_attr(struct gsm_bts_sm *bts_sm)
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{
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struct msgb *msgb;
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uint8_t buf[256];
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struct gsm_bts *bts = gsm_bts_sm_get_bts(bts_sm);
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msgb = msgb_alloc(1024, "nanobts_attr_bts");
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if (!msgb)
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return NULL;
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/* NSEI 925 */
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buf[0] = bts_sm->gprs.nse.nsei >> 8;
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buf[1] = bts_sm->gprs.nse.nsei & 0xff;
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msgb_tl16v_put(msgb, NM_ATT_IPACC_NSEI, 2, buf);
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/* all timers in seconds */
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OSMO_ASSERT(ARRAY_SIZE(bts_sm->gprs.nse.timer) < sizeof(buf));
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memcpy(buf, bts_sm->gprs.nse.timer, ARRAY_SIZE(bts_sm->gprs.nse.timer));
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msgb_tl16v_put(msgb, NM_ATT_IPACC_NS_CFG, 7, buf);
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/* all timers in seconds */
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buf[0] = 3; /* blockimg timer (T1) */
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buf[1] = 3; /* blocking retries */
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buf[2] = 3; /* unblocking retries */
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buf[3] = 3; /* reset timer (T2) */
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buf[4] = 3; /* reset retries */
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buf[5] = 10; /* suspend timer (T3) in 100ms */
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buf[6] = 3; /* suspend retries */
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buf[7] = 10; /* resume timer (T4) in 100ms */
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buf[8] = 3; /* resume retries */
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buf[9] = 10; /* capability update timer (T5) */
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buf[10] = 3; /* capability update retries */
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OSMO_ASSERT(ARRAY_SIZE(bts->gprs.cell.timer) < sizeof(buf));
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memcpy(buf, bts->gprs.cell.timer, ARRAY_SIZE(bts->gprs.cell.timer));
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msgb_tl16v_put(msgb, NM_ATT_IPACC_BSSGP_CFG, 11, buf);
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return msgb;
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}
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struct msgb *nanobts_gen_set_cell_attr(struct gsm_bts *bts)
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{
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struct msgb *msgb;
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uint8_t buf[256];
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msgb = msgb_alloc(1024, "nanobts_attr_bts");
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if (!msgb)
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return NULL;
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/* routing area code */
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buf[0] = bts->gprs.rac;
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msgb_tl16v_put(msgb, NM_ATT_IPACC_RAC, 1, buf);
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buf[0] = 5; /* repeat time (50ms) */
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buf[1] = 3; /* repeat count */
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msgb_tl16v_put(msgb, NM_ATT_IPACC_GPRS_PAGING_CFG, 2, buf);
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/* BVCI 925 */
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buf[0] = bts->gprs.cell.bvci >> 8;
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buf[1] = bts->gprs.cell.bvci & 0xff;
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msgb_tl16v_put(msgb, NM_ATT_IPACC_BVCI, 2, buf);
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/* all timers in seconds, unless otherwise stated */
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buf[0] = 20; /* T3142 */
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buf[1] = 5; /* T3169 */
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buf[2] = 5; /* T3191 */
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buf[3] = 160; /* T3193 (units of 10ms) */
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buf[4] = 5; /* T3195 */
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buf[5] = 10; /* N3101 */
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buf[6] = 4; /* N3103 */
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buf[7] = 8; /* N3105 */
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buf[8] = 15; /* RLC CV countdown */
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msgb_tl16v_put(msgb, NM_ATT_IPACC_RLC_CFG, 9, buf);
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if (bts->gprs.mode == BTS_GPRS_EGPRS) {
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buf[0] = 0x8f;
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buf[1] = 0xff;
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} else {
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buf[0] = 0x0f;
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buf[1] = 0x00;
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}
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msgb_tl16v_put(msgb, NM_ATT_IPACC_CODING_SCHEMES, 2, buf);
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buf[0] = 0; /* T downlink TBF extension (0..500, high byte) */
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buf[1] = 250; /* T downlink TBF extension (0..500, low byte) */
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buf[2] = 0; /* T uplink TBF extension (0..500, high byte) */
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buf[3] = 250; /* T uplink TBF extension (0..500, low byte) */
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buf[4] = 2; /* CS2 */
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msgb_tl16v_put(msgb, NM_ATT_IPACC_RLC_CFG_2, 5, buf);
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#if 0
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/* EDGE model only, breaks older models.
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* Should inquire the BTS capabilities */
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buf[0] = 2; /* MCS2 */
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msgb_tl16v_put(msgb, NM_ATT_IPACC_RLC_CFG_3, 1, buf);
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#endif
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return msgb;
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}
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struct msgb *nanobts_gen_set_nsvc_attr(struct gsm_bts *bts)
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{
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struct msgb *msgb;
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uint8_t buf[256];
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struct gsm_bts_sm *bts_sm = bts->site_mgr;
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msgb = msgb_alloc(1024, "nanobts_attr_bts");
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if (!msgb)
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return NULL;
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/* 925 */
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buf[0] = bts_sm->gprs.nsvc[0].nsvci >> 8;
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buf[1] = bts_sm->gprs.nsvc[0].nsvci & 0xff;
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msgb_tl16v_put(msgb, NM_ATT_IPACC_NSVCI, 2, buf);
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switch (bts_sm->gprs.nsvc->remote.u.sa.sa_family) {
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case AF_INET6:
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/* all fields are encoded in network byte order */
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/* protocol family */
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buf[0] = OSMO_NSVC_ADDR_IPV6;
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/* padding */
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buf[1] = 0x00;
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/* local udp port */
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osmo_store16be(bts_sm->gprs.nsvc[0].local_port, &buf[2]);
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/* remote udp port */
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memcpy(&buf[4], &bts_sm->gprs.nsvc[0].remote.u.sin6.sin6_port, sizeof(uint16_t));
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/* remote ip address */
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memcpy(&buf[6], &bts_sm->gprs.nsvc[0].remote.u.sin6.sin6_addr, sizeof(struct in6_addr));
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msgb_tl16v_put(msgb, NM_ATT_OSMO_NS_LINK_CFG, 6 + sizeof(struct in6_addr), buf);
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break;
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case AF_INET:
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/* remote udp port */
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memcpy(&buf[0], &bts_sm->gprs.nsvc[0].remote.u.sin.sin_port, sizeof(uint16_t));
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/* remote ip address */
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memcpy(&buf[2], &bts_sm->gprs.nsvc[0].remote.u.sin.sin_addr, sizeof(struct in_addr));
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/* local udp port */
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osmo_store16be(bts_sm->gprs.nsvc[0].local_port, &buf[6]);
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msgb_tl16v_put(msgb, NM_ATT_IPACC_NS_LINK_CFG, 8, buf);
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break;
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default:
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break;
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}
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return msgb;
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}
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struct msgb *nanobts_gen_set_radio_attr(struct gsm_bts *bts,
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struct gsm_bts_trx *trx)
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{
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struct msgb *msgb;
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uint8_t buf[256];
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msgb = msgb_alloc(1024, "nanobts_attr_bts");
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if (!msgb)
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return NULL;
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/* number of -2dB reduction steps / Pn */
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msgb_tv_put(msgb, NM_ATT_RF_MAXPOWR_R, trx->max_power_red / 2);
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buf[0] = trx->arfcn >> 8;
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buf[1] = trx->arfcn & 0xff;
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msgb_tl16v_put(msgb, NM_ATT_ARFCN_LIST, 2, buf);
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return msgb;
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}
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