Disable the IpManager timeout on Ethernet.

This fixes a longstanding bug where after a DHCP timeout, we
would never restart the DHCP client and get an IP address until
the link bounced.

Also, two minor improvements:

1. Dump IpManager info when dump() is called.
2. When onLinkPropertiesChange is called, also update
   mLinkProperties. We were already sending the updated
   LinkProperties to the NetworkAgent, so this is really only
   useful for dump(), but it's just one line and safe because
   onLinkPropertiesChange already grabs the lock.

Bug: 17733693
Change-Id: I42c3319cb4bc151c547ed721baf5e83f97e23862

service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java

@@ -33,6 +33,7 @@ import android.net.NetworkInfo;
 import android.net.NetworkInfo.DetailedState;
 import android.net.StaticIpConfiguration;
 import android.net.ip.IpManager;
+import android.net.ip.IpManager.ProvisioningConfiguration;
 import android.net.ip.IpManager.WaitForProvisioningCallback;
 import android.os.Handler;
 import android.os.IBinder;
@@ -283,7 +284,6 @@ class EthernetNetworkFactory {
             }
         }
 
-        // TODO: Handle DHCP renew.
         final Thread ipProvisioningThread = new Thread(new Runnable() {
             public void run() {
                 if (DBG) {
@@ -308,6 +308,7 @@ class EthernetNetworkFactory {
                         public void onLinkPropertiesChange(LinkProperties newLp) {
                             synchronized(EthernetNetworkFactory.this) {
                                 if (mNetworkAgent != null && mNetworkInfo.isConnected()) {
+                                    mLinkProperties = newLp;
                                     mNetworkAgent.sendLinkProperties(newLp);
                                 }
                             }
@@ -329,7 +330,11 @@ class EthernetNetworkFactory {
                             mIpManager.setTcpBufferSizes(tcpBufferSizes);
                         }
 
-                        mIpManager.startProvisioning();
+                        final ProvisioningConfiguration provisioningConfiguration =
+                                mIpManager.buildProvisioningConfiguration()
+                                        .withProvisioningTimeoutMs(0)
+                                        .build();
+                        mIpManager.startProvisioning(provisioningConfiguration);
                     }
 
                     linkProperties = ipmCallback.waitForProvisioning();
@@ -526,5 +531,11 @@ class EthernetNetworkFactory {
         pw.println("NetworkInfo: " + mNetworkInfo);
         pw.println("LinkProperties: " + mLinkProperties);
         pw.println("NetworkAgent: " + mNetworkAgent);
+        if (mIpManager != null) {
+            pw.println("IpManager:");
+            pw.increaseIndent();
+            mIpManager.dump(fd, pw, args);
+            pw.decreaseIndent();
+        }
     }
 }