bsc: Introduce a local notification scheme for the CTRL interface
Make it possible to inform local CTRL connections about some state.
The TRAP will be only sent to local connections. The notification
text may not contain spaces.
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c b/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
index d3593de..bc44289 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
@@ -552,6 +552,47 @@
return 0;
}
+CTRL_CMD_DEFINE(net_notification, "notification");
+static int get_net_notification(struct ctrl_cmd *cmd, void *data)
+{
+ cmd->reply = "There is nothing to read";
+ return CTRL_CMD_ERROR;
+}
+
+static int set_net_notification(struct ctrl_cmd *cmd, void *data)
+{
+ struct ctrl_cmd *trap;
+ struct gsm_network *net;
+
+ net = cmd->node;
+
+ trap = ctrl_cmd_create(tall_bsc_ctx, CTRL_TYPE_TRAP);
+ if (!trap) {
+ LOGP(DCTRL, LOGL_ERROR, "Trap creation failed\n");
+ goto handled;
+ }
+
+ trap->id = "0";
+ trap->variable = "notification";
+ trap->reply = talloc_strdup(trap, cmd->value);
+
+ /*
+ * This should only be sent to local systems. In the future
+ * we might even ask for systems to register to receive
+ * the notifications.
+ */
+ ctrl_cmd_send_to_all(net->ctrl, trap);
+ talloc_free(trap);
+
+handled:
+ return CTRL_CMD_HANDLED;
+}
+
+static int verify_net_notification(struct ctrl_cmd *cmd, const char *value, void *data)
+{
+ return 0;
+}
+
static int msc_signal_handler(unsigned int subsys, unsigned int signal,
void *handler_data, void *signal_data)
{
@@ -604,6 +645,9 @@
rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_bts_connection_status);
if (rc)
goto end;
+ rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_net_notification);
+ if (rc)
+ goto end;
rc = osmo_signal_register_handler(SS_L_INPUT, &bts_connection_status_trap_cb, net);
end: