add bip_get_interface and Device_Time_Of_Restart, fix Network_Port_Changes_Discard (#1038)

* added bip_get_interface

* basic/object/device get/set time of restart

* clear changes pending

* clang-format

src/bacnet/basic/object/device.c

@@ -1060,6 +1060,23 @@ bool Device_Serial_Number_Set(const char *str, size_t length)
     return status;
 }
 
+void Device_Time_Of_Restart(BACNET_TIMESTAMP *time_of_restart)
+{
+    bacapp_timestamp_copy(time_of_restart, &Time_Of_Device_Restart);
+}
+
+bool Device_Set_Time_Of_Restart(const BACNET_TIMESTAMP *time_of_restart)
+{
+    bool status = false;
+
+    if (time_of_restart) {
+        bacapp_timestamp_copy(&Time_Of_Device_Restart, time_of_restart);
+        status = true;
+    }
+
+    return status;
+}
+
 uint8_t Device_Protocol_Version(void)
 {
     return BACNET_PROTOCOL_VERSION;

src/bacnet/basic/object/netport.c

@@ -1211,6 +1211,7 @@ void Network_Port_Changes_Pending_Discard(uint32_t object_instance)
     if (index < BACNET_NETWORK_PORTS_MAX) {
         if (Object_List[index].Discard_Changes) {
             Object_List[index].Discard_Changes(object_instance);
+            Object_List[index].Changes_Pending = false;
         }
     }
 }
@@ -4662,7 +4663,8 @@ void Network_Port_Changes_Discard(void)
 
     for (i = 0; i < BACNET_NETWORK_PORTS_MAX; i++) {
         if (Object_List[i].Changes_Pending) {
-            Network_Port_Changes_Pending_Discard(i);
+            Network_Port_Changes_Pending_Discard(
+                Object_List[i].Instance_Number);
             Object_List[i].Changes_Pending = false;
         }
     }

src/bacnet/datalink/bip.h

@@ -35,6 +35,9 @@ bool bip_init(char *ifname);
 BACNET_STACK_EXPORT
 void bip_set_interface(const char *ifname);
 
+BACNET_STACK_EXPORT
+const char *bip_get_interface(void);
+
 BACNET_STACK_EXPORT
 void bip_cleanup(void);