Integrate XdpPort more cleanly into port manager

* No ugly #ifdef TURBO
* Turbo ports need to be specified explicitly in drone.ini
* If a port is not a turbo port, fall back to LinuxPort
* Turbo ports set their description as 'Turbo' which shows up in GUI
* Some XdpPort creation/destruction error checks

server/drone.pro

@@ -61,6 +61,7 @@ SOURCES += \
     linuxhostdevice.cpp \
     linuxport.cpp \
     params.cpp \
+    turbo.cpp \
     winhostdevice.cpp \
     winpcapport.cpp 
 SOURCES += myservice.cpp 

server/portmanager.cpp

@@ -17,10 +17,6 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
 
-#ifdef TURBO
-#include "xdpport.h" // MUST be included first - see why in xdpport.h
-#endif
-
 #include "portmanager.h"
 
 #include "bsdport.h"
@@ -28,6 +24,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 #include "linuxport.h"
 #include "pcapport.h"
 #include "settings.h"
+#include "turbo.h"
 #include "winpcapport.h"
 
 #include <QHostAddress>
@@ -97,18 +94,17 @@ PortManager::PortManager()
 #if defined(Q_OS_WIN32)
         port = new WinPcapPort(i, device->name, device->description);
 #elif defined(Q_OS_LINUX)
-#ifdef TURBO
+        if (isTurboPort(device->name))
-        port = new XdpPort(i, device->name);
+            port = createTurboPort(i, device->name);
-#else
+        else
             port = new LinuxPort(i, device->name);
-#endif
 #elif defined(Q_OS_BSD4)
         port = new BsdPort(i, device->name);
 #else
         port = new PcapPort(i, device->name);
 #endif
 
-        if (!port->isUsable())
+        if (port && !port->isUsable())
         {
             qDebug("%s: unable to open %s. Skipping!", __FUNCTION__,
                     device->name);

server/turbo.cpp

@@ -0,0 +1,33 @@
+/*
+Copyright (C) 2021 Srivats P.
+
+This file is part of "Ostinato"
+
+This is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>
+*/
+
+#include "turbo.h"
+
+bool isTurboPort(const char* device)
+{
+    return false;
+}
+
+AbstractPort* createTurboPort(int id, const char* device)
+{
+    return nullptr;
+}
+
+#endif
+

server/turbo.h

@@ -0,0 +1,29 @@
+/*
+Copyright (C) 2021 Srivats P.
+
+This file is part of "Ostinato"
+
+This is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>
+*/
+
+#ifndef _TURBO_H
+#define _TURBO_H
+
+class AbstractPort;
+
+bool isTurboPort(const char* device);
+AbstractPort* createTurboPort(int id, const char* device);
+
+#endif
+