Typedefs in iokit/Families/IONetworking

• netifEntry iokit/Families/IONetworking/IONetworkStack.cpp:89
• pkt_len iokit/Families/IONetworking/IOKernelDebugger.cpp:56
• spl_t iokit/Families/IONetworking/IONetworkController.cpp:47
• timeout iokit/Families/IONetworking/IOKernelDebugger.cpp:57