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/* GSM 08.08 like API for OpenBSC. The bridge from MSC to BSC */
/* (C) 2010 by Holger Hans Peter Freyther
* (C) 2010 by On Waves
* (C) 2009 by Harald Welte <laforge@gnumonks.org>
*
* 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 <openbsc/bsc_api.h>
#include <openbsc/gsm_data.h>
#include <openbsc/signal.h>
#include <openbsc/abis_rsl.h>
#include <osmocore/talloc.h>
int bsc_api_init(struct gsm_network *network, struct bsc_api *api)
{
network->bsc_api = api;
return 0;
}
int gsm0808_submit_dtap(struct gsm_subscriber_connection *conn,
struct msgb *msg, int link_id)
{
msg->lchan = conn->lchan;
msg->trx = msg->lchan->ts->trx;
return rsl_data_request(msg, link_id);
}
/* dequeue messages to layer 4 */
int bsc_upqueue(struct gsm_network *net)
{
struct gsm_mncc *mncc;
struct msgb *msg;
int work = 0;
if (net)
while ((msg = msgb_dequeue(&net->upqueue))) {
mncc = (struct gsm_mncc *)msg->data;
if (net->mncc_recv)
net->mncc_recv(net, mncc->msg_type, mncc);
work = 1; /* work done */
talloc_free(msg);
}
return work;
}
static int bsc_handle_lchan_signal(unsigned int subsys, unsigned int signal,
void *handler_data, void *signal_data)
{
struct bsc_api *bsc;
struct gsm_lchan *lchan;
if (subsys != SS_LCHAN || signal != S_LCHAN_UNEXPECTED_RELEASE)
return 0;
lchan = (struct gsm_lchan *)signal_data;
if (!lchan)
return 0;
bsc = lchan->ts->trx->bts->network->bsc_api;
if (!bsc || !bsc->clear_request)
return 0;
bsc->clear_request(&lchan->conn, 0);
return 0;
}
static __attribute__((constructor)) void on_dso_load_bsc(void)
{
register_signal_handler(SS_LCHAN, bsc_handle_lchan_signal, NULL);
}
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