1. A method for implementing tunneling processing, the method comprising: determining, by an openflow controller, matching field information, a tunneling protocol type, and a tunneling operation type of a data packet corresponding to tunneling processing; sending, by the openflow controller, first configuration information to an openflow forwarding apparatus, wherein the first configuration information comprises the matching field information and is used to give an instruction for sending a data packet matching the matching field information to a tunneling protocol processing apparatus; and sending, by the openflow controller, second configuration information to the tunneling protocol processing apparatus, wherein the second configuration information comprises the tunneling operation type, the tunneling protocol type, and the matching field information, and is used to give an instruction for processing, according to the tunneling operation type and the tunneling protocol type, the data packet matching the matching field information, so that the tunneling protocol processing apparatus sends the processed data packet to the openflow forwarding apparatus.