From daa042513c2ff35ef48f277564230394214d1176 Mon Sep 17 00:00:00 2001
From: Magnus Strandberg <magnus.strandberg@sonymobile.com>
Date: Fri, 17 Aug 2012 11:36:55 +0200
Subject: [PATCH] Fix for updating TCP buffer size when switching network type

When PDP connects in GSM network, the TCP buffer window size is
set to max 8760. If the phone swicthes to UMTS, the TCP buffer
size is not updated to UMTS, i.e. GPRS buffer size is still
used with limited data transfer spead as a result.
This fix makes sure the TCP buffer size is updated when
switching network type.

Change-Id: Iaa527c84f56cae108f4c7276bbed10552faaff6c
---
 services/java/com/android/server/ConnectivityService.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index 230f07bb5b..86ada4049a 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -2490,6 +2490,11 @@ private NetworkStateTracker makeWimaxStateTracker() {
                     //       @see bug/4455071
                     handleConnectivityChange(info.getType(), false);
                     break;
+                case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED:
+                    info = (NetworkInfo) msg.obj;
+                    type = info.getType();
+                    updateNetworkSettings(mNetTrackers[type]);
+                    break;
                 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK:
                     String causedBy = null;
                     synchronized (ConnectivityService.this) {