Add implementation to find a lchan by the struct gsm_subscriber
Really compare pointers to check if the one gsm_subscriber is equal to the other... gsm_subscriber should be unique for a given IMSI so comparing the pointers should be fine.
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@ -1,6 +1,28 @@
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/* Management functions to allocate/release struct gsm_lchan */
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/* (C) 2008 by Harald Welte <laforge@gnumonks.org>
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* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
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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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#ifndef _CHAN_ALLOC_H
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#define _CHAN_ALLOC_H
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#include "gsm_subscriber.h"
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/* Special allocator for C0 of BTS */
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struct gsm_bts_trx_ts *ts_c0_alloc(struct gsm_bts *bts,
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enum gsm_phys_chan_config pchan);
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@ -12,6 +34,8 @@ struct gsm_bts_trx_ts *ts_alloc(struct gsm_bts *bts,
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/* Regular physical channel (TS) */
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void ts_free(struct gsm_bts_trx_ts *ts);
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/* Find an allocated channel */
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struct gsm_lchan *lchan_find(struct gsm_bts *bts, struct gsm_subscriber *subscr);
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/* Allocate a logical channel (SDCCH, TCH, ...) */
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struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type);
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@ -226,3 +226,19 @@ static void auto_release_channel(void *_lchan)
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schedule_timer(&lchan->release_timer, LCHAN_RELEASE_TIMEOUT);
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}
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struct gsm_lchan* lchan_find(struct gsm_bts *bts, struct gsm_subscriber *subscr) {
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int trx, ts_no, lchan_no;
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for (trx = 0; trx < bts->num_trx; ++trx) {
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for (ts_no = 0; ts_no < 8; ++ts_no) {
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for (lchan_no = 0; lchan_no < TS_MAX_LCHAN; ++lchan_no) {
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struct gsm_lchan *lchan =
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&bts->trx[trx].ts[ts_no].lchan[lchan_no];
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if (subscr == lchan->subscr)
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return lchan;
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}
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}
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}
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return NULL;
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}
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