[sccp] Add a force_free method for connections

E.g. when the underlying connection transport medium is gone
one needs to force to close SCCP connections, add this helper.

It will remove the connection from the list of connections and
it will free the data.

2 files changed, 16 insertions, 0 deletions

diff --git a/openbsc/include/sccp/sccp.h b/openbsc/include/sccp/sccp.h
index 2e1478812..604a2ac72 100644
--- a/openbsc/include/sccp/sccp.h
+++ b/openbsc/include/sccp/sccp.h
@@ -106,6 +106,11 @@ int sccp_connection_close(struct sccp_connection *connection, int cause);
 int sccp_connection_free(struct sccp_connection *connection);
 
 /**
+ * internal.. 
+ */
+int sccp_connection_force_free(struct sccp_connection *conn);
+
+/**
  * Create a new socket. Set your callbacks and then call bind to open
  * the connection.
  */
diff --git a/openbsc/src/sccp/sccp.c b/openbsc/src/sccp/sccp.c
index 4bd87c8ed..e0fd02e0e 100644
--- a/openbsc/src/sccp/sccp.c
+++ b/openbsc/src/sccp/sccp.c
@@ -1198,6 +1198,17 @@ int sccp_connection_free(struct sccp_connection *connection)
 	return 0;
 }
 
+int sccp_connection_force_free(struct sccp_connection *con)
+{
+	if (con->connection_state > SCCP_CONNECTION_STATE_NONE &&
+	    con->connection_state < SCCP_CONNECTION_STATE_RELEASE_COMPLETE)
+		llist_del(&con->list);
+
+	con->connection_state = SCCP_CONNECTION_STATE_REFUSED;
+	sccp_connection_free(con);
+        return 0;
+}
+
 struct sccp_connection *sccp_connection_socket(void)
 {
 	return talloc_zero(tall_sccp_ctx, struct sccp_connection);