isisd, lib: Cleanup linked list associated with snmp

Signed-off-by: Donald Sharp <[email protected]>

isisd/isis_snmp.c

@@ -2826,6 +2826,13 @@ static int isis_snmp_init(struct event_loop *tm)
 	return 0;
 }
 
+static int isis_snmp_terminate(void)
+{
+	smux_terminate();
+
+	return 0;
+}
+
 /*
  * ISIS notification functions: we have one function per notification
  */
@@ -3448,6 +3455,7 @@ static int isis_snmp_module_init(void)
 	hook_register(isis_circuit_del_hook, isis_circuit_snmp_id_free);
 
 	hook_register(frr_late_init, isis_snmp_init);
+	hook_register(frr_fini, isis_snmp_terminate);
 	return 0;
 }
 

lib/agentx.c

@@ -377,4 +377,9 @@ void smux_events_update(void)
 	agentx_events_update();
 }
 
+void smux_terminate(void)
+{
+	if (events)
+		list_delete(&events);
+}
 #endif /* SNMP_AGENTX */

lib/smux.h

@@ -101,6 +101,7 @@ extern bool smux_enabled(void);
 
 extern void libagentx_init(void);
 extern void smux_init(struct event_loop *tm);
+extern void smux_terminate(void);
 extern void smux_agentx_enable(void);
 extern void smux_register_mib(const char *, struct variable *, size_t, int,
 			      oid[], size_t);