Android2.2添加Ethernet 框架支持（一）

下载android-x86的Framework 和package 两个文件夹；

网址：http://www.android-x86.org/getsourcecode

我们要移植的是android-2.2的版本，所以我们必须得到android-x86在2.2版本上的源码。

        mkdir android-x86

        cd android-x86

        repo init -u git://git.android-x86.org/manifest.git -b froyo-x86

前面初始化了android-x86，接下来你可以repo sync，只需要check out我们需要的几个文件夹，如下：

        repo sync platform/build

        repo sync platform/frameworks/base

        repo sync platform/packages/apps/Settings

下面我们将ethernet部分内容移植到自己的android源码中：

1.       将framework/base/ethernet 复制到源码的framework/base/目录下：

2.       修改源码framework/base目录下的Android.mk

LOCAL_SRC_FILES += \

         … \

         /java/android/net//IVpnService.aidl \

185+：ethernet/java/android/net/ethernet/IEthernetManager.aidl

3.       将文件framework/base/service/java/com/android/server/EthernetService.java复制到 framework/base/service/java/com/android/server/目录下；

4.      修改framework/base/service/java/com/android/server目录下的ConnectivityService.java文件：

--- /home/thomas/android2.2/frameworks/base/services/java/com/android/server/ConnectivityService.java	2011-07-04 15:37:30.949468920 +0800
+++ ./frameworks/base/services/java/com/android/server/ConnectivityService.java	2011-09-08 11:02:01.927843001 +0800
@@ -28,6 +28,7 @@
 import android.net.NetworkInfo;
 import android.net.NetworkStateTracker;
 import android.net.wifi.WifiStateTracker;
+import android.net.ethernet.EthernetStateTracker;
 import android.os.Binder;
 import android.os.Handler;
 import android.os.IBinder;
@@ -235,7 +236,7 @@
                             n.mType);
                     continue;
                 }
-                if (mRadioAttributes[n.mRadio] == null) {
+                if ((n.mType != ConnectivityManager.TYPE_ETHERNET) && (mRadioAttributes[n.mRadio] == null)) {
                     Slog.e(TAG, "Error in networkAttributes - ignoring attempt to use undefined " +
                             "radio " + n.mRadio + " in network type " + n.mType);
                    continue;
@@ -243,6 +244,7 @@
                 mNetAttributes[n.mType] = n;
                 mNetworksDefined++;
             } catch(Exception e) {
+                Slog.e(TAG, "wrong dev exception " + e);
                 // ignore it - leave the entry null
             }
         }
@@ -299,8 +301,14 @@
                 wifiService.startWifi();
                 mNetTrackers[ConnectivityManager.TYPE_WIFI] = wst;
                 wst.startMonitoring();
-
                 break;
+			case ConnectivityManager.TYPE_ETHERNET:
+				if (DBG) Slog.v(TAG, "#########Starting Ethernet Service.");
+                EthernetStateTracker est = new EthernetStateTracker(context, mHandler);
+                EthernetService ethService = new EthernetService(context, est);
+                ServiceManager.addService(Context.ETHERNET_SERVICE, ethService);
+                mNetTrackers[ConnectivityManager.TYPE_ETHERNET] = est;
+                est.startMonitoring();
             case ConnectivityManager.TYPE_MOBILE:
                 mNetTrackers[netType] = new MobileDataStateTracker(context, mHandler,
                     netType, mNetAttributes[netType].mName);
@@ -310,9 +318,23 @@
                     mNetTrackers[netType].teardown();
                 }
                 break;
+				
             default:
-                Slog.e(TAG, "Trying to create a DataStateTracker for an unknown radio type " +
-                        mNetAttributes[netType].mRadio);
+                /*
+                 * The ethernet is not a radio device, but we will still need to init
+                 * it. check if this is the etherent device or not.
+                 
+                if (netType == ConnectivityManager.TYPE_ETHERNET) {
+                    if (DBG) Slog.v(TAG, "Starting Ethernet Service.");
+                    EthernetStateTracker est = new EthernetStateTracker(context, mHandler);
+                    EthernetService ethService = new EthernetService(context, est);
+                    ServiceManager.addService(Context.ETHERNET_SERVICE, ethService);
+                    mNetTrackers[ConnectivityManager.TYPE_ETHERNET] = est;
+                    est.startMonitoring();
+                } else {
+                    Slog.e(TAG, "Trying to create a DataStateTracker for an unknown radio type " +
+                    mNetAttributes[netType].mRadio);
+                }*/
                 continue;
             }
         }

JNI接口文件添加：android_net_ethernet.cpp

5.    将framework/base/core/jni/android_net_ethernet.cpp复制到源码目录framework/base/core/jni/目录下；

6.    修改framework/base/core/jni/AndroidRuntime.cpp文件,注册JNI接口文件：

--- /home/thomas/android2.2/frameworks/base/core/jni/AndroidRuntime.cpp	2011-07-04 15:37:30.109468920 +0800
+++ ./frameworks/base/core/jni/AndroidRuntime.cpp	2011-09-08 15:35:47.047843001 +0800
@@ -141,6 +141,7 @@
 extern int register_android_net_NetworkUtils(JNIEnv* env);
 extern int register_android_net_TrafficStats(JNIEnv* env);
 extern int register_android_net_wifi_WifiManager(JNIEnv* env);
+extern int register_android_net_ethernet_EthernetManager(JNIEnv* env); //Added by TCL Thomas Yang Sep.08 2011
 extern int register_android_security_Md5MessageDigest(JNIEnv *env);
 extern int register_android_text_AndroidCharacter(JNIEnv *env);
 extern int register_android_text_AndroidBidi(JNIEnv *env);
@@ -1259,6 +1260,7 @@
     REG_JNI(register_android_net_NetworkUtils),
     REG_JNI(register_android_net_TrafficStats),
     REG_JNI(register_android_net_wifi_WifiManager),
+    REG_JNI(register_android_net_ethernet_EthernetManager),//Added by TCL Thomas Yang Sep.08 2011
     REG_JNI(register_android_os_MemoryFile),
     REG_JNI(register_com_android_internal_os_ZygoteInit),
     REG_JNI(register_android_hardware_Camera),

7.      修改framework/base/core/jni/Android.mk文件，添加ethernetJNI接口文件的编译项：

--- /home/thomas/android2.2/frameworks/base/core/jni/Android.mk	2011-07-04 15:37:30.109468920 +0800
+++ ./frameworks/base/core/jni/Android.mk	2011-09-08 15:42:58.551843002 +0800
@@ -60,6 +60,7 @@
 	android_net_NetUtils.cpp \
 	android_net_TrafficStats.cpp \
 	android_net_wifi_Wifi.cpp \
+	android_net_ethernet.cpp \
 	android_nio_utils.cpp \
 	android_pim_EventRecurrence.cpp \
 	android_text_format_Time.cpp \

8.      修改framework/base/core/java/android/net/ConnectivityManager.java文件：

--- /home/thomas/android2.2/frameworks/base/core/java/android/net/ConnectivityManager.java	2011-07-04 15:37:30.017468920 +0800
+++ ./frameworks/base/core/java/android/net/ConnectivityManager.java	2011-09-07 11:29:30.185267002 +0800
@@ -190,10 +190,19 @@
      * default connections.
      */
     public static final int TYPE_WIMAX       = 6;
+
+/**
+  * The Default Ethernet data connection.  When active, all data traffic
+  * will use this connection by default.  Should not coexist with other
+  * default connections.
+  */
+    public static final int TYPE_ETHERNET    = 7; //Changed by TCL Thomas Yang Sep.07 2011
+
+
     /** {@hide} TODO: Need to adjust this for WiMAX. */
     public static final int MAX_RADIO_TYPE   = TYPE_WIFI;
     /** {@hide} TODO: Need to adjust this for WiMAX. */
-    public static final int MAX_NETWORK_TYPE = TYPE_MOBILE_HIPRI;
+    public static final int MAX_NETWORK_TYPE = TYPE_ETHERNET;   //Changed by TCL Thomas Yang Sep.07 2011
      public static final int DEFAULT_NETWORK_PREFERENCE = TYPE_WIFI;

9.     修改framework/base/java/android/content/Context.java:

10.    修改文件frameworks/base/core/java/android/provider/Settings.java

11.     修改文件:frameworks/base/core/java/android/app/ContextImpl.java

12.     修改文件：frameworks/base/core/res/res/values/arrays.xml：

13.  修改文件：frameworks/base/core/res/res/values/config.xml：

下文待续------