Add tcp buffer size data for ethernet

bug: 16549611
Change-Id: I61d29bb88b9e58c50e03c39570f3ebb7712e4f37

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

@@ -247,6 +247,9 @@ class EthernetNetworkFactory {
         }
     }
 
+    private static final String TCP_BUFFER_SIZES_ETHERNET =
+            "524288,1048576,3145728,524288,1048576,2097152";
+
     /* Called by the NetworkFactory on the handler thread. */
     public void onRequestNetwork() {
         // TODO: Handle DHCP renew.
@@ -281,6 +284,8 @@ class EthernetNetworkFactory {
                     linkProperties.setHttpProxy(config.linkProperties.getHttpProxy());
                 }
 
+                linkProperties.setTcpBufferSizes(TCP_BUFFER_SIZES_ETHERNET);
+
                 synchronized(EthernetNetworkFactory.this) {
                     if (mNetworkAgent != null) {
                         Log.e(TAG, "Already have a NetworkAgent - aborting new request");