Add port speed and MTU properties

This commit only retreives these properties for Windows. Linux and
BSD/MacOS are pending

common/protocol.proto

@@ -212,6 +212,9 @@ message Port {
     optional TransmitMode transmit_mode = 7 [default = kSequentialTransmit];
     optional string user_name = 8;
     optional bool is_tracking_stream_stats = 9;
+
+    optional double speed = 10; // in Mbps
+    optional uint32 mtu = 11;
 }
 
 message PortConfigList {

server/abstractport.cpp

@@ -64,6 +64,11 @@ AbstractPort::~AbstractPort()
 
 void AbstractPort::init()
 {
+    if (interfaceInfo_) {
+        data_.set_speed(interfaceInfo_->speed);
+        data_.set_mtu(interfaceInfo_->mtu);
+    }
+
     if (deviceManager_)
         deviceManager_->createHostDevices();
 }    

server/bsdport.cpp

@@ -214,6 +214,7 @@ void BsdPort::populateInterfaceInfo()
     }
 
     interfaceInfo_ = new InterfaceInfo;
+    // FIXME: speed, mtu
     interfaceInfo_->mac = mac;
 
     //

server/interfaceinfo.h

@@ -39,6 +39,9 @@ struct InterfaceInfo
     quint64          mac;
     QList<Ip4Config> ip4;
     QList<Ip6Config> ip6;
+
+    double speed{0}; // in Mbps
+    quint32 mtu{0};
 };
 
 #endif

server/linuxport.cpp

@@ -247,6 +247,7 @@ void LinuxPort::populateInterfaceInfo()
     rtnl_link_put(link);
 
     interfaceInfo_ = new InterfaceInfo;
+    // FIXME: speed, mtu
     interfaceInfo_->mac = mac;
 
     //

server/portmanager.cpp

@@ -74,7 +74,7 @@ PortManager::PortManager()
     {
         AbstractPort *port;
       
-        qDebug("%d. %s", i, device->name);
+        qDebug("==========\n%d. %s", i, device->name);
         if (device->description)
             qDebug(" (%s)\n", device->description);
 
@@ -122,6 +122,8 @@ PortManager::PortManager()
                         qPrintable(QHostAddress(ip.address.toArray()).toString()),
                         ip.prefixLength,
                         qPrintable(QHostAddress(ip.gateway.toArray()).toString()));
+            qDebug("Speed: %g Mbps", intfInfo->speed);
+            qDebug("Mtu: %u", intfInfo->mtu);
         }
 
         if (!port->setRateAccuracy(txRateAccuracy))

server/winpcapport.cpp

@@ -261,6 +261,11 @@ void WinPcapPort::populateInterfaceInfo()
     }
 
     interfaceInfo_ = new InterfaceInfo;
+
+    interfaceInfo_->speed = adapter->TransmitLinkSpeed != quint64(-1) ?
+        adapter->TransmitLinkSpeed/ulong(1e6) : 0;
+    interfaceInfo_->mtu = adapter->Mtu;
+
     if (adapter->PhysicalAddressLength == 6) {
         interfaceInfo_->mac = qFromBigEndian<quint64>(
                                     adapter->PhysicalAddress) >> 16;