From 445ae84fbd7d5ef04a426f8c32a79a369fed70eb Mon Sep 17 00:00:00 2001
From: Aaron McCarthy <aaron.mccarthy@nokia.com>
Date: Thu, 4 Mar 2010 17:33:43 +1000
Subject: Prefer ethernet over wlan.

Change how the defaultConfiguration is calculated when one is not
provided by an engine.
---
 src/network/bearer/qnetworkconfigmanager.cpp | 69 ++++++++++++++++++++--------
 1 file changed, 51 insertions(+), 18 deletions(-)

diff --git a/src/network/bearer/qnetworkconfigmanager.cpp b/src/network/bearer/qnetworkconfigmanager.cpp
index 0eb9c63..b631cf1 100644
--- a/src/network/bearer/qnetworkconfigmanager.cpp
+++ b/src/network/bearer/qnetworkconfigmanager.cpp
@@ -227,7 +227,7 @@ QNetworkConfiguration QNetworkConfigurationManager::defaultConfiguration() const
     // Engines don't have a default configuration.
 
     // Return first active snap
-    QNetworkConfigurationPrivatePointer firstDiscovered;
+    QNetworkConfigurationPrivatePointer defaultConfiguration;
 
     foreach (QBearerEngine *engine, conPriv->engines()) {
         QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator it;
@@ -242,22 +242,35 @@ QNetworkConfiguration QNetworkConfigurationManager::defaultConfiguration() const
                 QNetworkConfiguration config;
                 config.d = it.value();
                 return config;
-            } else if ((it.value()->state & QNetworkConfiguration::Discovered) ==
-                       QNetworkConfiguration::Discovered) {
-                firstDiscovered = it.value();
+            } else if (!defaultConfiguration) {
+                if ((it.value()->state & QNetworkConfiguration::Discovered) ==
+                    QNetworkConfiguration::Discovered) {
+                    defaultConfiguration = it.value();
+                }
             }
         }
     }
 
     // No Active SNAPs return first Discovered SNAP.
-    if (firstDiscovered) {
+    if (defaultConfiguration) {
         QNetworkConfiguration config;
-        config.d = firstDiscovered;
+        config.d = defaultConfiguration;
         return config;
     }
 
-    // No Active or Discovered SNAPs, do same for InternetAccessPoints.
-    firstDiscovered.reset();
+    /*
+        No Active or Discovered SNAPs, find the perferred access point.
+        The following priority order is used:
+
+            1. Active Ethernet
+            2. Active WLAN
+            3. Active Other
+            4. Discovered Ethernet
+            5. Discovered WLAN
+            6. Discovered Other
+    */
+
+    defaultConfiguration.reset();
 
     foreach (QBearerEngine *engine, conPriv->engines()) {
         QHash<QString, QNetworkConfigurationPrivatePointer>::Iterator it;
@@ -267,22 +280,42 @@ QNetworkConfiguration QNetworkConfigurationManager::defaultConfiguration() const
 
         for (it = engine->accessPointConfigurations.begin(),
              end = engine->accessPointConfigurations.end(); it != end; ++it) {
-            if ((it.value()->state & QNetworkConfiguration::Active) ==
-                QNetworkConfiguration::Active) {
-                QNetworkConfiguration config;
-                config.d = it.value();
-                return config;
-            } else if ((it.value()->state & QNetworkConfiguration::Discovered) ==
-                       QNetworkConfiguration::Discovered) {
-                firstDiscovered = it.value();
+
+            if ((it.value()->state & QNetworkConfiguration::Discovered) ==
+                QNetworkConfiguration::Discovered) {
+                if (!defaultConfiguration) {
+                    defaultConfiguration = it.value();
+                } else {
+                    if (defaultConfiguration->state == it.value()->state) {
+                        if (defaultConfiguration->bearerName() == QLatin1String("Ethernet")) {
+                            // do nothing
+                        } else if (defaultConfiguration->bearerName() == QLatin1String("WLAN")) {
+                            // ethernet beats wlan
+                            if (it.value()->bearerName() == QLatin1String("Ethernet"))
+                                defaultConfiguration = it.value();
+                        } else {
+                            // ethernet and wlan beats other
+                            if (it.value()->bearerName() == QLatin1String("Ethernet") ||
+                                it.value()->bearerName() == QLatin1String("WLAN")) {
+                                defaultConfiguration = it.value();
+                            }
+                        }
+                    } else {
+                        // active beats discovered
+                        if ((defaultConfiguration->state & QNetworkConfiguration::Active) !=
+                            QNetworkConfiguration::Active) {
+                            defaultConfiguration = it.value();
+                        }
+                    }
+                }
             }
         }
     }
 
     // No Active InternetAccessPoint return first Discovered InternetAccessPoint.
-    if (firstDiscovered) {
+    if (defaultConfiguration) {
         QNetworkConfiguration config;
-        config.d = firstDiscovered;
+        config.d = defaultConfiguration;
         return config;
     }
 
-- 
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