bsc: Add module for handling BSSAP input
The current implementation is a stub. The code from
bssap.c of on-waves/bsc-master will be migrated into
this new structure
diff --git a/openbsc/src/bsc/osmo_bsc_bssap.c b/openbsc/src/bsc/osmo_bsc_bssap.c
new file mode 100644
index 0000000..44c652b
--- /dev/null
+++ b/openbsc/src/bsc/osmo_bsc_bssap.c
@@ -0,0 +1,60 @@
+/* GSM 08.08 BSSMAP handling */
+/* (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2010 by On-Waves
+ * 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/osmo_bsc.h>
+#include <openbsc/debug.h>
+
+#include <osmocore/protocol/gsm_08_08.h>
+
+int bsc_handle_udt(struct gsm_network *network,
+ struct bsc_msc_connection *conn,
+ struct msgb *msgb, unsigned int length)
+{
+ struct bssmap_header *bs;
+
+ LOGP(DMSC, LOGL_DEBUG, "Incoming SCCP message ftom MSC: %s\n",
+ hexdump(msgb->l3h, length));
+
+ if (length < sizeof(*bs)) {
+ LOGP(DMSC, LOGL_ERROR, "The header is too short.\n");
+ return -1;
+ }
+
+ bs = (struct bssmap_header *) msgb->l3h;
+ if (bs->length < length - sizeof(*bs))
+ return -1;
+
+ switch (bs->type) {
+ case BSSAP_MSG_BSS_MANAGEMENT:
+ LOGP(DMSC, LOGL_ERROR, "BSS management not implemented.\n");
+ break;
+ default:
+ LOGP(DMSC, LOGL_ERROR, "Unimplemented msg type: %d\n", bs->type);
+ }
+
+ return 0;
+}
+
+int bsc_handle_dt1(struct osmo_bsc_sccp_con *conn,
+ struct msgb *msg, unsigned int len)
+{
+ return -1;
+}