[bsc_msc_ip] This is a BSC that connects to real MSC via IP

This is a BSC to be used by on-waves.com to connect to a real
MSC using SCCP over IP.

The following messages and features are currently implemented:
    - IPA identity ack's
    - COMPLETE LAYER3 INFORMATION
    - DTAP
    - PAGING COMMAND
    - CLEAR COMPLETE/CLEAR REQUEST
    - CIPHER MODE COMMAND/ REJECT /COMPLETE

It comes with a tool to create the enum's from the spec and
a very simple test server to do the handshaking.

1 files changed, 20 insertions, 0 deletions

diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index 0ac8674fd..8a9446a5e 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -110,11 +110,25 @@ struct gsm_bts_link {
 	struct gsm_bts *bts;
 };
 
+struct sccp_connection;
 struct gsm_lchan;
 struct gsm_subscriber;
 struct gsm_mncc;
 struct rtp_socket;
 
+/* BSC/MSC data holding them together */
+struct bss_sccp_connection_data {
+	struct gsm_lchan *lchan;
+	struct sccp_connection *sccp;
+	int ciphering_handled : 1;
+};
+
+#define sccp_get_lchan(data_ctx) ((struct bss_sccp_connection_data *)data_ctx)->lchan
+#define lchan_get_sccp(lchan) lchan->msc_data->sccp
+struct bss_sccp_connection_data *bss_sccp_create_data();
+void bss_sccp_free_data(struct bss_sccp_connection_data *);
+
+
 /* Network Management State */
 struct gsm_nm_state {
 	u_int8_t operational;
@@ -183,6 +197,12 @@ struct gsm_lchan {
 	 */
 	struct gsm_loc_updating_operation *loc_operation;
 
+	/*
+	 * MSC handling...
+	 */
+	struct bss_sccp_connection_data *msc_data;
+
+
 	/* use count. how many users use this channel */
 	unsigned int use_count;
 };