introduce a more sophisticated channel hopping scheme

2 files changed, 36 insertions, 11 deletions

diff --git a/libopie2/opienet/onetwork.cpp b/libopie2/opienet/onetwork.cpp
index 50d67bb..ac2857a 100644
--- a/libopie2/opienet/onetwork.cpp
+++ b/libopie2/opienet/onetwork.cpp
@@ -242,3 +242,3 @@ void ONetworkInterface::setMonitoring( OMonitoringInterface* m )
     _mon = m;
-    qDebug( "ONetwork::setMonitoring(): Installed monitoring interface '%s'", (const char*) m->name() );
+    qDebug( "ONetwork::setMonitoring(): Installed monitoring driver '%s' on interface '%s'", (const char*) m->name(), (const char*) _name );
 }
@@ -293,5 +293,22 @@ OChannelHopper::OChannelHopper( OWirelessNetworkInterface* iface )
                :QObject( 0, "Mickey's funky hopper" ),
-               _iface( iface ), _interval( 0 ), _channel( 1 ), _tid( 0 ),
-               _maxChannel( iface->channels()+1 )
+               _iface( iface ), _interval( 0 ), _tid( 0 )
 {
+    int _maxChannel = iface->channels()+1;
+    // generate fancy hopping sequence honoring the device capabilities
+    if ( _maxChannel >=  1 ) _channels.append(  1 );
+    if ( _maxChannel >=  7 ) _channels.append(  7 );
+    if ( _maxChannel >= 13 ) _channels.append( 13 );
+    if ( _maxChannel >=  2 ) _channels.append(  2 );
+    if ( _maxChannel >=  8 ) _channels.append(  8 );
+    if ( _maxChannel >=  3 ) _channels.append(  3 );
+    if ( _maxChannel >= 14 ) _channels.append( 14 );
+    if ( _maxChannel >=  9 ) _channels.append(  9 );
+    if ( _maxChannel >=  4 ) _channels.append(  4 );
+    if ( _maxChannel >= 10 ) _channels.append( 10 );
+    if ( _maxChannel >=  5 ) _channels.append(  5 );
+    if ( _maxChannel >= 11 ) _channels.append( 11 );
+    if ( _maxChannel >=  6 ) _channels.append(  6 );
+    if ( _maxChannel >= 12 ) _channels.append( 12 );
+    _channel = _channels.begin();
+
 }
@@ -312,3 +329,3 @@ int OChannelHopper::channel() const
 {
-    return _channel;
+    return *_channel;
 }
@@ -318,6 +335,6 @@ void OChannelHopper::timerEvent( QTimerEvent* )
 {
-    if ( !--_channel ) _channel = _maxChannel;
-    _iface->setChannel( _channel );
+    _iface->setChannel( *_channel );
     qDebug( "OChannelHopper::timerEvent(): set channel %d on interface '%s'",
-            _channel, (const char*) _iface->name() );
+            *_channel, (const char*) _iface->name() );
+    if ( ++_channel == _channels.end() ) _channel = _channels.begin();
 }
@@ -383,5 +400,9 @@ void OWirelessNetworkInterface::init()
     //ML: extra space or will complain with "invalid argument length"... :-(
-    char __extraBufferForBuggyDrivers[sizeof range];
+    //ML: But don't allocate too much or prism2_usb will segfault *sigh*
+    char __extraBufferForBuggyDrivers[20];
+
+    qDebug( "sizeof(iwrangestruct)=%d, sizeof range=%d, sizeof range*2=%d", sizeof(iwrangestruct), sizeof range, (sizeof range)*2 );
+
     _iwr.u.data.pointer = (char*) ⦥
-    _iwr.u.data.length = (sizeof range) * 2;
+    _iwr.u.data.length =  sizeof(iwrangestruct)+20;
     _iwr.u.data.flags = 0;
@@ -393,2 +414,4 @@ void OWirelessNetworkInterface::init()
 
+    qDebug( "OWirelessNetworkInterface::init(): Interface %s reported to have %d channels.", (const char*) _name, range.num_frequency );
+
     for ( int i = 0; i < range.num_frequency; ++i )
diff --git a/libopie2/opienet/onetwork.h b/libopie2/opienet/onetwork.h
index c544454..b57ac3f 100644
--- a/libopie2/opienet/onetwork.h
+++ b/libopie2/opienet/onetwork.h
@@ -38,2 +38,3 @@
 
+#include <qvaluelist.h>
 #include <qdict.h>
@@ -164,5 +165,6 @@ class OChannelHopper : public QObject
     int _interval;
-    int _channel;
     int _tid;
-    int _maxChannel;
+    QValueList<int> _channels;
+    QValueList<int>::Iterator _channel;
+
 };