osmo-bsc: Command bts_connection_status with TRAPS
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c b/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
index bdec2b8..8f0db7e 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
@@ -111,6 +111,75 @@
return 0;
}
+CTRL_CMD_DEFINE(bts_connection_status, "bts_connection_status");
+static int bts_connection_status = 0;
+
+static int get_bts_connection_status(struct ctrl_cmd *cmd, void *data)
+{
+ if (bts_connection_status)
+ cmd->reply = "connected";
+ else
+ cmd->reply = "disconnected";
+ return CTRL_CMD_REPLY;
+}
+
+static int set_bts_connection_status(struct ctrl_cmd *cmd, void *data)
+{
+ return CTRL_CMD_ERROR;
+}
+
+static int verify_bts_connection_status(struct ctrl_cmd *cmd, const char *value, void *data)
+{
+ cmd->reply = "Read-only property";
+ return 1;
+}
+
+static int bts_connection_status_trap_cb(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data)
+{
+ struct ctrl_cmd *cmd;
+ struct gsm_network *gsmnet = (struct gsm_network *)handler_data;
+ struct gsm_bts *bts;
+ int bts_current_status;
+
+ if (signal != S_L_INP_TEI_DN && signal != S_L_INP_TEI_UP) {
+ return 0;
+ }
+
+ bts_current_status = 0;
+ /* Check if OML on at least one BTS is up */
+ llist_for_each_entry(bts, &gsmnet->bts_list, list) {
+ if (bts->oml_link) {
+ bts_current_status = 1;
+ break;
+ }
+ }
+ if (bts_connection_status == 0 && bts_current_status == 1) {
+ LOGP(DCTRL, LOGL_DEBUG, "BTS connection (re)established, sending TRAP.\n");
+ } else if (bts_connection_status == 1 && bts_current_status == 0) {
+ LOGP(DCTRL, LOGL_DEBUG, "No more BTS connected, sending TRAP.\n");
+ } else {
+ return 0;
+ }
+
+ cmd = ctrl_cmd_create(tall_bsc_ctx, CTRL_TYPE_TRAP);
+ if (!cmd) {
+ LOGP(DCTRL, LOGL_ERROR, "Trap creation failed.\n");
+ return 0;
+ }
+
+ bts_connection_status = bts_current_status;
+
+ cmd->id = "0";
+ cmd->variable = "bts_connection_status";
+
+ get_bts_connection_status(cmd, NULL);
+
+ ctrl_cmd_send_to_all(gsmnet->ctrl, cmd);
+
+ talloc_free(cmd);
+
+ return 0;
+}
static int get_bts_loc(struct ctrl_cmd *cmd, void *data);
@@ -365,6 +434,12 @@
if (rc)
goto end;
rc = osmo_signal_register_handler(SS_MSC, &msc_connection_status_trap_cb, net);
+ if (rc)
+ goto end;
+ rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_bts_connection_status);
+ if (rc)
+ goto end;
+ rc = osmo_signal_register_handler(SS_L_INPUT, &bts_connection_status_trap_cb, net);
end:
return rc;
}