isup: Start with isup support in the cellmgr.

Start parsing the ISUP messages. This just adds what
we need to handle now and will not grow it a lot.

1 files changed, 49 insertions, 0 deletions

diff --git a/include/isup_types.h b/include/isup_types.h
new file mode 100644
index 0000000..51c5e79
--- /dev/null
+++ b/include/isup_types.h
@@ -0,0 +1,49 @@
+/*
+ * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 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.
+ *
+ */
+
+#ifndef isup_types_h
+#define isup_types_h
+
+#include <stdint.h>
+
+struct msgb;
+struct mtp_link;
+
+/* This is from Table 4/Q.763 */
+#define ISUP_MSG_GRS	0x17
+#define ISUP_MSG_GRA	0x29
+
+struct isup_msg_hdr {
+	uint16_t cic   : 12,
+		 spare :  4;
+	uint8_t  msg_type;
+	uint8_t  data[0];
+} __attribute__((packed));
+
+struct isup_msg_grs {
+	uint8_t  pointer_int;
+};
+
+int mtp_link_forward_isup(struct mtp_link *link, struct msgb *msg, int sls);
+
+int isup_parse_grs(const uint8_t *data, uint8_t length);
+
+#endif