From 6383982582abac178f2e0fcb17c35304d23e6d09 Mon Sep 17 00:00:00 2001
From: Lorenzo Colitti <lorenzo@google.com>
Date: Wed, 20 Mar 2013 19:22:58 +0900
Subject: [PATCH] Reset connections on all stacked interfaces.

Bug: 8276725
Change-Id: I7fe99c6ea123037cef3e89e3c2c17ed43cc0b1ea
---
 core/java/android/net/LinkProperties.java     |  9 +++++
 .../android/server/ConnectivityService.java   | 37 ++++++++++---------
 2 files changed, 28 insertions(+), 18 deletions(-)

diff --git a/core/java/android/net/LinkProperties.java b/core/java/android/net/LinkProperties.java
index 4457a22844..e5227548b5 100644
--- a/core/java/android/net/LinkProperties.java
+++ b/core/java/android/net/LinkProperties.java
@@ -119,6 +119,15 @@ public class LinkProperties implements Parcelable {
         return mIfaceName;
     }
 
+    public Collection<String> getAllInterfaceNames() {
+        Collection interfaceNames = new ArrayList<String>(mStackedLinks.size() + 1);
+        interfaceNames.add(new String(mIfaceName));
+        for (LinkProperties stacked: mStackedLinks.values()) {
+            interfaceNames.addAll(stacked.getAllInterfaceNames());
+        }
+        return interfaceNames;
+    }
+
     public Collection<InetAddress> getAddresses() {
         Collection<InetAddress> addresses = new ArrayList<InetAddress>();
         for (LinkAddress linkAddress : mLinkAddresses) {
diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index 72d249aa28..6dcb4034e5 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -2256,26 +2256,27 @@ public class ConnectivityService extends IConnectivityManager.Stub {
         if (resetMask != 0 || resetDns) {
             LinkProperties linkProperties = mNetTrackers[netType].getLinkProperties();
             if (linkProperties != null) {
-                String iface = linkProperties.getInterfaceName();
-                if (TextUtils.isEmpty(iface) == false) {
-                    if (resetMask != 0) {
-                        if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")");
-                        NetworkUtils.resetConnections(iface, resetMask);
+                for (String iface : linkProperties.getAllInterfaceNames()) {
+                    if (TextUtils.isEmpty(iface) == false) {
+                        if (resetMask != 0) {
+                            if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")");
+                            NetworkUtils.resetConnections(iface, resetMask);
 
-                        // Tell VPN the interface is down. It is a temporary
-                        // but effective fix to make VPN aware of the change.
-                        if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) {
-                            mVpn.interfaceStatusChanged(iface, false);
+                            // Tell VPN the interface is down. It is a temporary
+                            // but effective fix to make VPN aware of the change.
+                            if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) {
+                                mVpn.interfaceStatusChanged(iface, false);
+                            }
                         }
-                    }
-                    if (resetDns) {
-                        flushVmDnsCache();
-                        if (VDBG) log("resetting DNS cache for " + iface);
-                        try {
-                            mNetd.flushInterfaceDnsCache(iface);
-                        } catch (Exception e) {
-                            // never crash - catch them all
-                            if (DBG) loge("Exception resetting dns cache: " + e);
+                        if (resetDns) {
+                            flushVmDnsCache();
+                            if (VDBG) log("resetting DNS cache for " + iface);
+                            try {
+                                mNetd.flushInterfaceDnsCache(iface);
+                            } catch (Exception e) {
+                                // never crash - catch them all
+                                if (DBG) loge("Exception resetting dns cache: " + e);
+                            }
                         }
                     }
                 }