1 files changed, 88 insertions, 0 deletions
diff --git a/openbsc/include/openbsc/signal.h b/openbsc/include/openbsc/signal.h
new file mode 100644
index 000000000..4a583f689
--- /dev/null
+++ b/openbsc/include/openbsc/signal.h
@@ -0,0 +1,88 @@
+/* Generic signalling/notification infrastructure */
+/* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (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.
+ *
+ */
+
+#ifndef OPENBSC_SIGNAL_H
+#define OPENBSC_SIGNAL_H
+
+#include <stdlib.h>
+#include <errno.h>
+
+#include <openbsc/gsm_data.h>
+#include <openbsc/gsm_subscriber.h>
+
+
+/*
+ * Signalling subsystems
+ */
+enum signal_subsystems {
+	SS_PAGING,
+	SS_SMS,
+	SS_ABISIP,
+	SS_NM,
+	SS_LCHAN,
+};
+
+/* SS_PAGING signals */
+enum signal_paging {
+	S_PAGING_COMPLETED,
+};
+
+/* SS_ABISIP signals */
+enum signal_abisip {
+	S_ABISIP_BIND_ACK,
+};
+
+/* SS_NM signals */
+enum signal_nm {
+	S_NM_SW_ACTIV_REP,	/* GSM 12.21 software activated report */
+	S_NM_FAIL_REP,		/* GSM 12.21 failure event report */
+};
+
+/* SS_LCHAN signals */
+enum signal_lchan {
+	/*
+	 * The lchan got freed with an use_count != 0 and error
+	 * recovery needs to be carried out from within the
+	 * signal handler.
+	 */
+	S_LCHAN_UNEXPECTED_RELEASE,
+};
+
+typedef int signal_cbfn(unsigned int subsys, unsigned int signal,
+			void *handler_data, void *signal_data);
+
+struct paging_signal_data {
+	struct gsm_subscriber *subscr;
+	struct gsm_bts *bts;
+
+	/* NULL in case the paging didn't work */
+	struct gsm_lchan *lchan;
+};
+
+/* Management */
+int register_signal_handler(unsigned int subsys, signal_cbfn *cbfn, void *data);
+void unregister_signal_handler(unsigned int subsys, signal_cbfn *cbfn, void *data);
+
+/* Dispatch */
+void dispatch_signal(unsigned int subsys, unsigned int signal, void *signal_data);
+
+
+#endif