Added NetworkInterface::network_prefix

net/base/net_util.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_BASE_NET_UTIL_H_
 #define NET_BASE_NET_UTIL_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
@@ skipping 498 matching lines @@
 //
 // Note that this function does not check for IP addresses other than
 // the above, although other IP addresses may point to the local
 // machine.
 NET_EXPORT_PRIVATE bool IsLocalhost(const std::string& host);
 
 // struct that is used by GetNetworkList() to represent a network
 // interface.
 struct NET_EXPORT NetworkInterface {
   NetworkInterface();
-  NetworkInterface(const std::string& name, const IPAddressNumber& address);
+  NetworkInterface(const std::string& name,
+                   const IPAddressNumber& address,
+                   uint8 network_prefix);
   ~NetworkInterface();
 
   std::string name;
   IPAddressNumber address;
+  uint8 network_prefix;
 };
 
 typedef std::vector<NetworkInterface> NetworkInterfaceList;
 
 // Returns list of network interfaces except loopback interface. If an
 // interface has more than one address, a separate entry is added to
 // the list for each address.
 // Can be called only on a thread that allows IO.
 NET_EXPORT bool GetNetworkList(NetworkInterfaceList* networks);
 
@@ skipping 12 matching lines @@
   // 802.11n, HT rates.
   WIFI_PHY_LAYER_PROTOCOL_N,
   // Unclassified mode or failure to identify.
   WIFI_PHY_LAYER_PROTOCOL_UNKNOWN
 };
 
 // Characterize the PHY mode of the currently associated access point.
 // Currently only available on OS_WIN.
 NET_EXPORT WifiPHYLayerProtocol GetWifiPHYLayerProtocol();
 
+// Returns number of matching initial bits between the addresses |a1| and |a2|.
+unsigned CommonPrefixLength(const IPAddressNumber& a1,
+                            const IPAddressNumber& a2);
+
+// Computes the number of leading 1-bits in |mask|.
+unsigned MaskPrefixLength(const IPAddressNumber& mask);
+
 }  // namespace net
 
 #endif  // NET_BASE_NET_UTIL_H_