1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #pragma once 17 18 #include <stdint.h> 19 20 #include <netinet/in.h> 21 22 #include "socket.h" 23 24 class Router { 25 public: 26 // Initialize the router, this has to be called before any other methods can 27 // be called. It only needs to be called once. 28 bool init(); 29 30 // Indicate that |address| is a neighbor to this node and that it is 31 // accessible on the interface with index |interfaceIndex|. 32 bool addNeighbor(const struct in6_addr& address, uint32_t interfaceIndex); 33 34 // Add a route to |address|/|bits| on interface |interfaceIndex|. The 35 // |bits| parameter indicates the bitmask of the address, for example in 36 // the routing entry 2001:db8::/32 the |bits| parameter would be 32. 37 bool addRoute(const struct in6_addr& address, 38 uint8_t bits, 39 uint32_t interfaceIndex); 40 41 // Set the default gateway route to |address| on interface with index 42 // |interfaceIndex|. Overwrites any existing default gateway with the same 43 // address. 44 bool setDefaultGateway(const struct in6_addr& address, 45 unsigned int interfaceIndex); 46 private: 47 bool sendNetlinkMessage(const void* data, size_t size); 48 49 // Netlink socket for setting up neighbors and routes 50 Socket mSocket; 51 }; 52 53