651 lines
20 KiB
C
651 lines
20 KiB
C
/* ip.access nanoBTS specific code */
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/* (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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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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*/
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#include <arpa/inet.h>
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#include <osmocom/gsm/tlv.h>
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#include <openbsc/gsm_data.h>
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#include <openbsc/signal.h>
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#include <openbsc/abis_nm.h>
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#include <osmocom/abis/e1_input.h>
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#include <osmocom/gsm/tlv.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/talloc.h>
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#include <openbsc/gsm_data.h>
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#include <openbsc/abis_nm.h>
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#include <openbsc/abis_rsl.h>
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#include <openbsc/debug.h>
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#include <osmocom/abis/subchan_demux.h>
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#include <osmocom/abis/ipaccess.h>
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#include <osmocom/core/logging.h>
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static int bts_model_nanobts_start(struct gsm_network *net);
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static void bts_model_nanobts_e1line_bind_ops(struct e1inp_line *line);
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struct gsm_bts_model bts_model_nanobts = {
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.type = GSM_BTS_TYPE_NANOBTS,
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.name = "nanobts",
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.start = bts_model_nanobts_start,
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.oml_rcvmsg = &abis_nm_rcvmsg,
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.e1line_bind_ops = bts_model_nanobts_e1line_bind_ops,
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.nm_att_tlvdef = {
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.def = {
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/* ip.access specifics */
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[NM_ATT_IPACC_DST_IP] = { TLV_TYPE_FIXED, 4 },
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[NM_ATT_IPACC_DST_IP_PORT] = { TLV_TYPE_FIXED, 2 },
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[NM_ATT_IPACC_STREAM_ID] = { TLV_TYPE_TV, },
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[NM_ATT_IPACC_SEC_OML_CFG] = { TLV_TYPE_FIXED, 6 },
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[NM_ATT_IPACC_IP_IF_CFG] = { TLV_TYPE_FIXED, 8 },
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[NM_ATT_IPACC_IP_GW_CFG] = { TLV_TYPE_FIXED, 12 },
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[NM_ATT_IPACC_IN_SERV_TIME] = { TLV_TYPE_FIXED, 4 },
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[NM_ATT_IPACC_LOCATION] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_PAGING_CFG] = { TLV_TYPE_FIXED, 2 },
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[NM_ATT_IPACC_UNIT_ID] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_UNIT_NAME] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_SNMP_CFG] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_PRIM_OML_CFG_LIST] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_NV_FLAGS] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_FREQ_CTRL] = { TLV_TYPE_FIXED, 2 },
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[NM_ATT_IPACC_PRIM_OML_FB_TOUT] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_CUR_SW_CFG] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_TIMING_BUS] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_CGI] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_RAC] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_OBJ_VERSION] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_GPRS_PAGING_CFG]= { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_NSEI] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_BVCI] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_NSVCI] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_NS_CFG] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_BSSGP_CFG] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_NS_LINK_CFG] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_RLC_CFG] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_ALM_THRESH_LIST]= { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_MONIT_VAL_LIST] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_TIB_CONTROL] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_SUPP_FEATURES] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_CODING_SCHEMES] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_RLC_CFG_2] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_HEARTB_TOUT] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_UPTIME] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_RLC_CFG_3] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_SSL_CFG] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_SEC_POSSIBLE] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_IML_SSL_STATE] = { TLV_TYPE_TL16V },
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[NM_ATT_IPACC_REVOC_DATE] = { TLV_TYPE_TL16V },
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},
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},
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};
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static unsigned char nanobts_attr_bts[] = {
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NM_ATT_INTERF_BOUND, 0x55, 0x5b, 0x61, 0x67, 0x6d, 0x73,
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/* interference avg. period in numbers of SACCH multifr */
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NM_ATT_INTAVE_PARAM, 0x06,
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/* conn fail based on SACCH error rate */
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NM_ATT_CONN_FAIL_CRIT, 0x00, 0x02, 0x01, 0x10,
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NM_ATT_T200, 0x1e, 0x24, 0x24, 0xa8, 0x34, 0x21, 0xa8,
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NM_ATT_MAX_TA, 0x3f,
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NM_ATT_OVERL_PERIOD, 0x00, 0x01, 10, /* seconds */
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NM_ATT_CCCH_L_T, 10, /* percent */
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NM_ATT_CCCH_L_I_P, 1, /* seconds */
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NM_ATT_RACH_B_THRESH, 10, /* busy threshold in - dBm */
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NM_ATT_LDAVG_SLOTS, 0x03, 0xe8, /* rach load averaging 1000 slots */
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NM_ATT_BTS_AIR_TIMER, 128, /* miliseconds */
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NM_ATT_NY1, 10, /* 10 retransmissions of physical config */
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NM_ATT_BCCH_ARFCN, HARDCODED_ARFCN >> 8, HARDCODED_ARFCN & 0xff,
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NM_ATT_BSIC, HARDCODED_BSIC,
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NM_ATT_IPACC_CGI, 0, 7, 0x00, 0xf1, 0x10, 0x00, 0x01, 0x00, 0x00,
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};
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static unsigned char nanobts_attr_radio[] = {
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NM_ATT_RF_MAXPOWR_R, 0x0c, /* number of -2dB reduction steps / Pn */
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NM_ATT_ARFCN_LIST, 0x00, 0x02, HARDCODED_ARFCN >> 8, HARDCODED_ARFCN & 0xff,
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};
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static unsigned char nanobts_attr_nse[] = {
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NM_ATT_IPACC_NSEI, 0, 2, 0x03, 0x9d, /* NSEI 925 */
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/* all timers in seconds */
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NM_ATT_IPACC_NS_CFG, 0, 7, 3, /* (un)blocking timer (Tns-block) */
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3, /* (un)blocking retries */
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3, /* reset timer (Tns-reset) */
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3, /* reset retries */
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30, /* test timer (Tns-test) */
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3, /* alive timer (Tns-alive) */
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10, /* alive retrires */
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/* all timers in seconds, unless otherwise stated */
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NM_ATT_IPACC_BSSGP_CFG, 0, 11,
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3, /* blockimg timer (T1) */
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3, /* blocking retries */
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3, /* unblocking retries */
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3, /* reset timer (T2) */
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3, /* reset retries */
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10, /* suspend timer (T3) in 100ms */
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3, /* suspend retries */
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10, /* resume timer (T4) in 100ms */
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3, /* resume retries */
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10, /* capability update timer (T5) */
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3, /* capability update retries */
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};
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static unsigned char nanobts_attr_cell[] = {
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NM_ATT_IPACC_RAC, 0, 1, 1, /* routing area code */
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NM_ATT_IPACC_GPRS_PAGING_CFG, 0, 2,
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5, /* repeat time (50ms) */
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3, /* repeat count */
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NM_ATT_IPACC_BVCI, 0, 2, 0x03, 0x9d, /* BVCI 925 */
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/* all timers in seconds, unless otherwise stated */
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NM_ATT_IPACC_RLC_CFG, 0, 9,
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20, /* T3142 */
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5, /* T3169 */
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5, /* T3191 */
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160, /* T3193 (units of 10ms) */
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5, /* T3195 */
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10, /* N3101 */
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4, /* N3103 */
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8, /* N3105 */
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15, /* RLC CV countdown */
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NM_ATT_IPACC_CODING_SCHEMES, 0, 2, 0x0f, 0x00, /* CS1..CS4 */
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NM_ATT_IPACC_RLC_CFG_2, 0, 5,
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0x00, 250, /* T downlink TBF extension (0..500) */
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0x00, 250, /* T uplink TBF extension (0..500) */
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2, /* CS2 */
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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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NM_ATT_IPACC_RLC_CFG_3, 0, 1,
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2, /* MCS2 */
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#endif
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};
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static unsigned char nanobts_attr_nsvc0[] = {
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NM_ATT_IPACC_NSVCI, 0, 2, 0x03, 0x9d, /* 925 */
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NM_ATT_IPACC_NS_LINK_CFG, 0, 8,
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0x59, 0xd8, /* remote udp port (23000) */
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192, 168, 100, 11, /* remote ip address */
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0x59, 0xd8, /* local udp port (23000) */
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};
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static void patch_16(uint8_t *data, const uint16_t val)
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{
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memcpy(data, &val, sizeof(val));
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}
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static void patch_32(uint8_t *data, const uint32_t val)
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{
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memcpy(data, &val, sizeof(val));
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}
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/*
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* Patch the various SYSTEM INFORMATION tables to update
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* the LAI
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*/
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static void patch_nm_tables(struct gsm_bts *bts)
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{
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uint8_t arfcn_low = bts->c0->arfcn & 0xff;
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uint8_t arfcn_high = (bts->c0->arfcn >> 8) & 0x0f;
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/* patch ARFCN into BTS Attributes */
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nanobts_attr_bts[42] &= 0xf0;
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nanobts_attr_bts[42] |= arfcn_high;
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nanobts_attr_bts[43] = arfcn_low;
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/* patch the RACH attributes */
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if (bts->rach_b_thresh != -1) {
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nanobts_attr_bts[33] = bts->rach_b_thresh & 0xff;
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}
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if (bts->rach_ldavg_slots != -1) {
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uint8_t avg_high = bts->rach_ldavg_slots & 0xff;
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uint8_t avg_low = (bts->rach_ldavg_slots >> 8) & 0x0f;
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nanobts_attr_bts[35] = avg_high;
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nanobts_attr_bts[36] = avg_low;
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}
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/* patch BSIC */
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nanobts_attr_bts[sizeof(nanobts_attr_bts)-11] = bts->bsic;
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/* patch CGI */
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abis_nm_ipaccess_cgi(nanobts_attr_bts+sizeof(nanobts_attr_bts)-7, bts);
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/* patch the power reduction */
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nanobts_attr_radio[1] = bts->c0->max_power_red / 2;
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/* patch NSEI */
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nanobts_attr_nse[3] = bts->gprs.nse.nsei >> 8;
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nanobts_attr_nse[4] = bts->gprs.nse.nsei & 0xff;
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memcpy(nanobts_attr_nse+8, bts->gprs.nse.timer,
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ARRAY_SIZE(bts->gprs.nse.timer));
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memcpy(nanobts_attr_nse+18, bts->gprs.cell.timer,
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ARRAY_SIZE(bts->gprs.cell.timer));
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/* patch NSVCI */
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nanobts_attr_nsvc0[3] = bts->gprs.nsvc[0].nsvci >> 8;
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nanobts_attr_nsvc0[4] = bts->gprs.nsvc[0].nsvci & 0xff;
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/* patch IP address as SGSN IP */
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patch_16(nanobts_attr_nsvc0 + 8,
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htons(bts->gprs.nsvc[0].remote_port));
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patch_32(nanobts_attr_nsvc0 + 10,
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htonl(bts->gprs.nsvc[0].remote_ip));
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patch_16(nanobts_attr_nsvc0 + 14,
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htons(bts->gprs.nsvc[0].local_port));
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/* patch BVCI */
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nanobts_attr_cell[12] = bts->gprs.cell.bvci >> 8;
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nanobts_attr_cell[13] = bts->gprs.cell.bvci & 0xff;
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/* patch RAC */
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nanobts_attr_cell[3] = bts->gprs.rac;
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if (bts->gprs.mode == BTS_GPRS_EGPRS) {
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/* patch EGPRS coding schemes MCS 1..9 */
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nanobts_attr_cell[29] = 0x8f;
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nanobts_attr_cell[30] = 0xff;
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}
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}
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/* Callback function to be called whenever we get a GSM 12.21 state change event */
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static int nm_statechg_event(int evt, struct nm_statechg_signal_data *nsd)
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{
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uint8_t obj_class = nsd->obj_class;
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void *obj = nsd->obj;
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struct gsm_nm_state *new_state = nsd->new_state;
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struct gsm_bts *bts;
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struct gsm_bts_trx *trx;
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struct gsm_bts_trx_ts *ts;
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struct gsm_bts_gprs_nsvc *nsvc;
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if (nsd->bts->type != GSM_BTS_TYPE_NANOBTS)
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return 0;
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/* This event-driven BTS setup is currently only required on nanoBTS */
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/* S_NM_STATECHG_ADM is called after we call chg_adm_state() and would create
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* endless loop */
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if (evt != S_NM_STATECHG_OPER)
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return 0;
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switch (obj_class) {
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case NM_OC_SITE_MANAGER:
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bts = container_of(obj, struct gsm_bts, site_mgr);
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if ((new_state->operational == NM_OPSTATE_ENABLED &&
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new_state->availability == NM_AVSTATE_OK) ||
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(new_state->operational == NM_OPSTATE_DISABLED &&
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new_state->availability == NM_AVSTATE_OFF_LINE))
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abis_nm_opstart(bts, obj_class, 0xff, 0xff, 0xff);
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break;
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case NM_OC_BTS:
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bts = obj;
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if (new_state->availability == NM_AVSTATE_DEPENDENCY) {
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patch_nm_tables(bts);
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abis_nm_set_bts_attr(bts, nanobts_attr_bts,
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sizeof(nanobts_attr_bts));
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abis_nm_chg_adm_state(bts, obj_class,
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bts->bts_nr, 0xff, 0xff,
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NM_STATE_UNLOCKED);
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abis_nm_opstart(bts, obj_class,
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bts->bts_nr, 0xff, 0xff);
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}
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break;
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case NM_OC_CHANNEL:
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ts = obj;
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trx = ts->trx;
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if (new_state->operational == NM_OPSTATE_DISABLED &&
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new_state->availability == NM_AVSTATE_DEPENDENCY) {
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patch_nm_tables(trx->bts);
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enum abis_nm_chan_comb ccomb =
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abis_nm_chcomb4pchan(ts->pchan);
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abis_nm_set_channel_attr(ts, ccomb);
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abis_nm_chg_adm_state(trx->bts, obj_class,
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trx->bts->bts_nr, trx->nr, ts->nr,
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NM_STATE_UNLOCKED);
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abis_nm_opstart(trx->bts, obj_class,
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trx->bts->bts_nr, trx->nr, ts->nr);
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}
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break;
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case NM_OC_RADIO_CARRIER:
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trx = obj;
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if (new_state->operational == NM_OPSTATE_DISABLED &&
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new_state->availability == NM_AVSTATE_OK)
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abis_nm_opstart(trx->bts, obj_class, trx->bts->bts_nr,
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trx->nr, 0xff);
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break;
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case NM_OC_GPRS_NSE:
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bts = container_of(obj, struct gsm_bts, gprs.nse);
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if (bts->gprs.mode == BTS_GPRS_NONE)
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break;
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if (new_state->availability == NM_AVSTATE_DEPENDENCY) {
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abis_nm_ipaccess_set_attr(bts, obj_class, bts->bts_nr,
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0xff, 0xff, nanobts_attr_nse,
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sizeof(nanobts_attr_nse));
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abis_nm_opstart(bts, obj_class, bts->bts_nr,
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0xff, 0xff);
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}
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break;
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case NM_OC_GPRS_CELL:
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bts = container_of(obj, struct gsm_bts, gprs.cell);
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if (bts->gprs.mode == BTS_GPRS_NONE)
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break;
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if (new_state->availability == NM_AVSTATE_DEPENDENCY) {
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abis_nm_ipaccess_set_attr(bts, obj_class, bts->bts_nr,
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0, 0xff, nanobts_attr_cell,
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sizeof(nanobts_attr_cell));
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abis_nm_opstart(bts, obj_class, bts->bts_nr,
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0, 0xff);
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abis_nm_chg_adm_state(bts, obj_class, bts->bts_nr,
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0, 0xff, NM_STATE_UNLOCKED);
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abis_nm_chg_adm_state(bts, NM_OC_GPRS_NSE, bts->bts_nr,
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0xff, 0xff, NM_STATE_UNLOCKED);
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}
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break;
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case NM_OC_GPRS_NSVC:
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nsvc = obj;
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bts = nsvc->bts;
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if (bts->gprs.mode == BTS_GPRS_NONE)
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break;
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/* We skip NSVC1 since we only use NSVC0 */
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if (nsvc->id == 1)
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break;
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if ((new_state->availability == NM_AVSTATE_OFF_LINE) ||
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(new_state->availability == NM_AVSTATE_DEPENDENCY)) {
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abis_nm_ipaccess_set_attr(bts, obj_class, bts->bts_nr,
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nsvc->id, 0xff,
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nanobts_attr_nsvc0,
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sizeof(nanobts_attr_nsvc0));
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abis_nm_opstart(bts, obj_class, bts->bts_nr,
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nsvc->id, 0xff);
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abis_nm_chg_adm_state(bts, obj_class, bts->bts_nr,
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nsvc->id, 0xff,
|
|
NM_STATE_UNLOCKED);
|
|
}
|
|
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 e1inp_sign_link *sign_link = mb->dst;
|
|
struct gsm_bts *bts = sign_link->trx->bts;
|
|
struct gsm_bts_trx *trx = gsm_bts_trx_num(bts, foh->obj_inst.trx_nr);
|
|
|
|
if (!trx)
|
|
return -EINVAL;
|
|
|
|
if (trx->bts->type != GSM_BTS_TYPE_NANOBTS)
|
|
return 0;
|
|
|
|
switch (foh->obj_class) {
|
|
case NM_OC_BASEB_TRANSC:
|
|
abis_nm_chg_adm_state(trx->bts, foh->obj_class,
|
|
trx->bts->bts_nr, trx->nr, 0xff,
|
|
NM_STATE_UNLOCKED);
|
|
abis_nm_opstart(trx->bts, foh->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;
|
|
case NM_OC_RADIO_CARRIER: {
|
|
/*
|
|
* Locking the radio carrier will make it go
|
|
* offline again and we would come here. The
|
|
* framework should determine that there was
|
|
* no change and avoid recursion.
|
|
*
|
|
* This code is here to make sure that on start
|
|
* a TRX remains locked.
|
|
*/
|
|
int rc_state = trx->mo.nm_state.administrative;
|
|
/* 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, foh->obj_class,
|
|
trx->bts->bts_nr, trx->nr, 0xff,
|
|
rc_state);
|
|
abis_nm_opstart(trx->bts, foh->obj_class, trx->bts->bts_nr,
|
|
trx->nr, 0xff);
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Callback function to be called every time we receive a signal from NM */
|
|
int bts_ipa_nm_sig_cb(unsigned int subsys, unsigned int signal,
|
|
void *handler_data, void *signal_data)
|
|
{
|
|
if (subsys != SS_NM)
|
|
return 0;
|
|
|
|
switch (signal) {
|
|
case S_NM_SW_ACTIV_REP:
|
|
return sw_activ_rep(signal_data);
|
|
case S_NM_STATECHG_OPER:
|
|
case S_NM_STATECHG_ADM:
|
|
return nm_statechg_event(signal, signal_data);
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct gsm_network *ipaccess_gsmnet;
|
|
|
|
static int bts_model_nanobts_start(struct gsm_network *net)
|
|
{
|
|
bts_model_nanobts.features.data = &bts_model_nanobts._features_data[0];
|
|
bts_model_nanobts.features.data_len =
|
|
sizeof(bts_model_nanobts._features_data);
|
|
|
|
gsm_btsmodel_set_feature(&bts_model_nanobts, BTS_FEAT_GPRS);
|
|
gsm_btsmodel_set_feature(&bts_model_nanobts, BTS_FEAT_EGPRS);
|
|
|
|
osmo_signal_register_handler(SS_NM, bts_ipa_nm_sig_cb, NULL);
|
|
|
|
ipaccess_gsmnet = net;
|
|
return 0;
|
|
}
|
|
|
|
int bts_model_nanobts_init(void)
|
|
{
|
|
return gsm_bts_model_register(&bts_model_nanobts);
|
|
}
|
|
|
|
#define OML_UP 0x0001
|
|
#define RSL_UP 0x0002
|
|
|
|
static struct gsm_bts *
|
|
find_bts_by_unitid(struct gsm_network *net, uint16_t site_id, uint16_t bts_id)
|
|
{
|
|
struct gsm_bts *bts;
|
|
|
|
llist_for_each_entry(bts, &net->bts_list, list) {
|
|
if (!is_ipaccess_bts(bts))
|
|
continue;
|
|
|
|
if (bts->ip_access.site_id == site_id &&
|
|
bts->ip_access.bts_id == bts_id)
|
|
return bts;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* These are exported because they are used by the VTY interface. */
|
|
void ipaccess_drop_rsl(struct gsm_bts_trx *trx)
|
|
{
|
|
if (!trx->rsl_link)
|
|
return;
|
|
|
|
e1inp_sign_link_destroy(trx->rsl_link);
|
|
trx->rsl_link = NULL;
|
|
}
|
|
|
|
void ipaccess_drop_oml(struct gsm_bts *bts)
|
|
{
|
|
struct gsm_bts_trx *trx;
|
|
|
|
if (!bts->oml_link)
|
|
return;
|
|
|
|
e1inp_sign_link_destroy(bts->oml_link);
|
|
bts->oml_link = NULL;
|
|
|
|
/* we have issues reconnecting RSL, drop everything. */
|
|
llist_for_each_entry(trx, &bts->trx_list, list)
|
|
ipaccess_drop_rsl(trx);
|
|
|
|
bts->ip_access.flags = 0;
|
|
}
|
|
|
|
/* This function is called once the OML/RSL link becomes up. */
|
|
static struct e1inp_sign_link *
|
|
ipaccess_sign_link_up(void *unit_data, struct e1inp_line *line,
|
|
enum e1inp_sign_type type)
|
|
{
|
|
struct gsm_bts *bts;
|
|
struct ipaccess_unit *dev = unit_data;
|
|
struct e1inp_sign_link *sign_link = NULL;
|
|
|
|
bts = find_bts_by_unitid(ipaccess_gsmnet, dev->site_id, dev->bts_id);
|
|
if (!bts) {
|
|
LOGP(DLINP, LOGL_ERROR, "Unable to find BTS configuration for "
|
|
" %u/%u/%u, disconnecting\n", dev->site_id,
|
|
dev->bts_id, dev->trx_id);
|
|
return NULL;
|
|
}
|
|
DEBUGP(DLINP, "Identified BTS %u/%u/%u\n",
|
|
dev->site_id, dev->bts_id, dev->trx_id);
|
|
|
|
switch(type) {
|
|
case E1INP_SIGN_OML:
|
|
/* remove old OML signal link for this BTS. */
|
|
ipaccess_drop_oml(bts);
|
|
|
|
/* create new OML link. */
|
|
sign_link = bts->oml_link =
|
|
e1inp_sign_link_create(&line->ts[E1INP_SIGN_OML - 1],
|
|
E1INP_SIGN_OML, bts->c0,
|
|
bts->oml_tei, 0);
|
|
break;
|
|
case E1INP_SIGN_RSL: {
|
|
struct e1inp_ts *ts;
|
|
struct gsm_bts_trx *trx = gsm_bts_trx_num(bts, dev->trx_id);
|
|
|
|
/* no OML link set yet? give up. */
|
|
if (!bts->oml_link)
|
|
return NULL;
|
|
|
|
/* remove old RSL link for this TRX. */
|
|
ipaccess_drop_rsl(trx);
|
|
|
|
/* set new RSL link for this TRX. */
|
|
line = bts->oml_link->ts->line;
|
|
ts = &line->ts[E1INP_SIGN_RSL + dev->trx_id - 1];
|
|
e1inp_ts_config_sign(ts, line);
|
|
sign_link = trx->rsl_link =
|
|
e1inp_sign_link_create(ts, E1INP_SIGN_RSL,
|
|
trx, trx->rsl_tei, 0);
|
|
trx->rsl_link->ts->sign.delay = 0;
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return sign_link;
|
|
}
|
|
|
|
static void ipaccess_sign_link_down(struct e1inp_line *line)
|
|
{
|
|
/* No matter what link went down, we close both signal links. */
|
|
struct e1inp_ts *ts = &line->ts[E1INP_SIGN_OML-1];
|
|
struct e1inp_sign_link *link;
|
|
|
|
llist_for_each_entry(link, &ts->sign.sign_links, list) {
|
|
struct gsm_bts *bts = link->trx->bts;
|
|
|
|
ipaccess_drop_oml(bts);
|
|
/* Yes, we only use the first element of the list. */
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* This function is called if we receive one OML/RSL message. */
|
|
static int ipaccess_sign_link(struct msgb *msg)
|
|
{
|
|
int ret = 0;
|
|
struct e1inp_sign_link *link = msg->dst;
|
|
struct e1inp_ts *e1i_ts = link->ts;
|
|
|
|
switch (link->type) {
|
|
case E1INP_SIGN_RSL:
|
|
if (!(link->trx->bts->ip_access.flags &
|
|
(RSL_UP << link->trx->nr))) {
|
|
e1inp_event(e1i_ts, S_L_INP_TEI_UP,
|
|
link->tei, link->sapi);
|
|
link->trx->bts->ip_access.flags |=
|
|
(RSL_UP << link->trx->nr);
|
|
}
|
|
ret = abis_rsl_rcvmsg(msg);
|
|
break;
|
|
case E1INP_SIGN_OML:
|
|
if (!(link->trx->bts->ip_access.flags & OML_UP)) {
|
|
e1inp_event(e1i_ts, S_L_INP_TEI_UP,
|
|
link->tei, link->sapi);
|
|
link->trx->bts->ip_access.flags |= OML_UP;
|
|
}
|
|
ret = abis_nm_rcvmsg(msg);
|
|
break;
|
|
default:
|
|
LOGP(DLINP, LOGL_ERROR, "Unknown signal link type %d\n",
|
|
link->type);
|
|
msgb_free(msg);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* not static, ipaccess-config needs it. */
|
|
struct e1inp_line_ops ipaccess_e1inp_line_ops = {
|
|
.cfg = {
|
|
.ipa = {
|
|
.addr = "0.0.0.0",
|
|
.role = E1INP_LINE_R_BSC,
|
|
},
|
|
},
|
|
.sign_link_up = ipaccess_sign_link_up,
|
|
.sign_link_down = ipaccess_sign_link_down,
|
|
.sign_link = ipaccess_sign_link,
|
|
};
|
|
|
|
static void bts_model_nanobts_e1line_bind_ops(struct e1inp_line *line)
|
|
{
|
|
e1inp_line_bind_ops(line, &ipaccess_e1inp_line_ops);
|
|
}
|