From abcddf1152dc9adca62bfb93df6439e1bc07f8a7 Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <zecke@selfish.org>
Date: Mon, 14 Jun 2010 18:20:15 +0800
Subject: bsc_api: Add init, dispatch the clear request when a channel is going
 missing

---
 openbsc/src/bsc_api.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

(limited to 'openbsc/src/bsc_api.c')

diff --git a/openbsc/src/bsc_api.c b/openbsc/src/bsc_api.c
index 070606da5..93b6210f0 100644
--- a/openbsc/src/bsc_api.c
+++ b/openbsc/src/bsc_api.c
@@ -1,6 +1,7 @@
 /* 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
@@ -22,8 +23,17 @@
  */
 
 #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)
@@ -51,3 +61,30 @@ int bsc_upqueue(struct gsm_network *net)
 
 	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);
+}
\ No newline at end of file
-- 
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