173 lines
4.5 KiB
C
173 lines
4.5 KiB
C
/* ip.access nanoBTS network listen mode */
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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 General Public License as published by
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* the Free Software Foundation; either version 2 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <stdint.h>
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#include <osmocore/talloc.h>
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#include <osmocore/timer.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/signal.h>
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#include <openbsc/debug.h>
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enum ipac_test_state {
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IPAC_TEST_S_IDLE,
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IPAC_TEST_S_RQD,
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IPAC_TEST_S_EXEC,
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IPAC_TEST_S_PARTIAL,
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};
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int ipac_nwl_test_start(struct gsm_bts_trx *trx, uint8_t testnr)
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{
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const uint8_t phys_config[] = { 0x02, 0x0a, 0x00, 0x01, 0x02 };
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if (trx->ipaccess.test_state != IPAC_TEST_S_IDLE) {
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fprintf(stderr, "Cannot start test in state %u\n", trx->ipaccess.test_state);
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return -EINVAL;
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}
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abis_nm_perform_test(trx->bts, 2, 0, trx->nr, 0xff, testnr, 1,
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phys_config, sizeof(phys_config));
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/* FIXME: start safety timer until when test is supposed to complete */
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return 0;
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}
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struct ipacc_ferr_elem {
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int16_t freq_err;
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uint8_t freq_qual;
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uint8_t arfcn;
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} __attribute__((packed));
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struct ipacc_cusage_elem {
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uint16_t arfcn:10,
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rxlev:6;
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} __attribute__ ((packed));
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static int test_rep(void *_msg)
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{
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struct msgb *msg = _msg;
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struct abis_om_fom_hdr *foh = msgb_l3(msg);
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uint16_t test_rep_len, ferr_list_len;
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struct ipacc_ferr_elem *ife;
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struct ipac_bcch_info binfo;
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int i, rc;
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DEBUGP(DNM, "TEST REPORT: ");
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if (foh->data[0] != NM_ATT_TEST_NO ||
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foh->data[2] != NM_ATT_TEST_REPORT)
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return -EINVAL;
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DEBUGPC(DNM, "test_no=0x%02x ", foh->data[1]);
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/* data[2] == NM_ATT_TEST_REPORT */
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/* data[3..4]: test_rep_len */
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test_rep_len = ntohs(*(uint16_t *) &foh->data[3]);
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/* data[5]: ip.access test result */
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DEBUGPC(DNM, "tst_res=%s\n", ipacc_testres_name(foh->data[5]));
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/* data[6]: ip.access nested IE. 3 == freq_err_list */
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switch (foh->data[6]) {
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case NM_IPAC_EIE_FREQ_ERR_LIST:
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/* data[7..8]: length of ferr_list */
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ferr_list_len = ntohs(*(uint16_t *) &foh->data[7]);
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/* data[9...]: frequency error list elements */
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for (i = 0; i < ferr_list_len; i+= sizeof(*ife)) {
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ife = (struct ipacc_ferr_elem *) (foh->data + 9 + i);
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DEBUGP(DNM, "==> ARFCN %4u, Frequency Error %6hd\n",
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ife->arfcn, ntohs(ife->freq_err));
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}
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break;
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case NM_IPAC_EIE_CHAN_USE_LIST:
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/* data[7..8]: length of ferr_list */
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ferr_list_len = ntohs(*(uint16_t *) &foh->data[7]);
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/* data[9...]: channel usage list elements */
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for (i = 0; i < ferr_list_len; i+= 2) {
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uint16_t *cu_ptr = (uint16_t *)(foh->data + 9 + i);
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uint16_t cu = ntohs(*cu_ptr);
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DEBUGP(DNM, "==> ARFCN %4u, RxLev %2u\n",
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cu & 0x3ff, cu >> 10);
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}
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break;
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case NM_IPAC_EIE_BCCH_INFO_TYPE:
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break;
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case NM_IPAC_EIE_BCCH_INFO:
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rc = ipac_parse_bcch_info(&binfo, foh->data+6);
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if (rc < 0) {
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DEBUGP(DNM, "BCCH Info parsing failed\n");
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break;
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}
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DEBUGP(DNM, "==> ARFCN %u, RxLev %2u, RxQual %2u: %3d-%d, LAC %d CI %d\n",
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binfo.arfcn, binfo.rx_lev, binfo.rx_qual,
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binfo.cgi.mcc, binfo.cgi.mnc,
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binfo.cgi.lac, binfo.cgi.ci);
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break;
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default:
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break;
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}
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switch (foh->data[5]) {
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case NM_IPACC_TESTRES_SUCCESS:
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case NM_IPACC_TESTRES_STOPPED:
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case NM_IPACC_TESTRES_TIMEOUT:
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case NM_IPACC_TESTRES_NO_CHANS:
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msg->trx->ipaccess.test_state = IPAC_TEST_S_IDLE;
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/* Send signal to notify higher layers of test completion */
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dispatch_signal(SS_IPAC_NWL, S_IPAC_NWL_COMPLETE, msg->trx);
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break;
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case NM_IPACC_TESTRES_PARTIAL:
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msg->trx->ipaccess.test_state = IPAC_TEST_S_PARTIAL;
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break;
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}
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return 0;
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}
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static int nwl_sig_cb(unsigned int subsys, unsigned int signal,
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void *handler_data, void *signal_data)
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{
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struct ipacc_ack_signal_data *ipacc_data;
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switch (signal) {
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case S_NM_TEST_REP:
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return test_rep(signal_data);
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default:
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break;
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}
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return 0;
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}
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void ipac_nwl_init(void)
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{
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register_signal_handler(SS_NM, nwl_sig_cb, NULL);
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}
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