a_iface_bssap: clear lingering subscriber connections on reset

When the BSC is vanishing, the subscriber connections will stay
active until the MSC is instructed via tha A interface to clear
the connections. Unfortunately, this will most likely not be
the case because the BSC will most likeley have lost all its
state and does not know about the old connections anymore.

This patch fixes the problem by looping through the list with
the active gsm subscriber connections and clearing them manually
when the reset from the BSC is received. Only connections by the
bsc who actually executes the reset are affected. Connections
from other BSCs will not be touched.

1 files changed, 3 insertions, 0 deletions

diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index 6d827029e..b07cac4a8 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -12,12 +12,14 @@
 #include <osmocom/core/stats.h>
 
 #include <osmocom/crypt/auth.h>
+#include <osmocom/sigtran/sccp_sap.h>
 
 #include <openbsc/common.h>
 #include <openbsc/rest_octets.h>
 #include <openbsc/common_cs.h>
 #include <openbsc/mgcpgw_client.h>
 
+
 /** annotations for msgb ownership */
 #define __uses
 
@@ -205,6 +207,7 @@ struct gsm_subscriber_connection {
 
 	struct {
 		struct osmo_sccp_user *scu;
+		struct osmo_sccp_addr bsc_addr;
 		int conn_id;
 	} a;
 };