+/**\r
+ Free the resource related to the configure parameters.\r
+ DHCP driver will make a copy of the user's configure\r
+ such as the time out value.\r
+\r
+ @param Config The DHCP configure data\r
+\r
+**/\r
+VOID\r
+DhcpCleanConfigure (\r
+ IN OUT EFI_DHCP4_CONFIG_DATA *Config\r
+ );\r
+\r
+/**\r
+ Callback of Dhcp packet. Does nothing.\r
+\r
+ @param Arg The context.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+DhcpDummyExtFree (\r
+ IN VOID *Arg\r
+ );\r
+\r
+/**\r
+ Set the elapsed time based on the given instance and the pointer to the\r
+ elapsed time option.\r
+\r
+ @param[in] Elapsed The pointer to the position to append.\r
+ @param[in] Instance The pointer to the Dhcp4 instance.\r
+**/\r
+VOID\r
+SetElapsedTime (\r
+ IN UINT16 *Elapsed,\r
+ IN DHCP_PROTOCOL *Instance\r
+ );\r
+\r