LineageOS/android_packages_modules_Connectivity
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Remove STOPSHIP but allow seamless Handoff when possible.

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If an address is removed we must reset the connection but
only for the connections associated with that address. For
now we're doing the "all" addresses for a type (IPv6 or IPv4)
in the future we only need to reset a particular addresses
connections.


Bug: 4981919
Change-Id: I97f8071a3ed6f827ed22f32216ca5011bfe6c1d9
This commit is contained in:
Wink Saville
2011-07-13 13:44:13 -07:00
parent c101c56ecc
commit 051a664b14
2 changed files with 164 additions and 32 deletions
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59
services/java/com/android/server/ConnectivityService.java
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@@ -28,6 +28,7 @@ import android.net.EthernetDataTracker;
import android.net.IConnectivityManager;
import android.net.LinkAddress;
import android.net.LinkProperties;
import android.net.LinkProperties.CompareAddressesResult;
import android.net.MobileDataStateTracker;
import android.net.NetworkConfig;
import android.net.NetworkInfo;
@@ -61,6 +62,7 @@ import java.io.FileDescriptor;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.Inet4Address;
import java.net.UnknownHostException;
@@ -76,6 +78,7 @@ import java.util.List;
public class ConnectivityService extends IConnectivityManager.Stub {
private static final boolean DBG = true;
private static final boolean VDBG = true;
private static final String TAG = "ConnectivityService";
// how long to wait before switching back to a radio's default network
@@ -98,6 +101,11 @@ public class ConnectivityService extends IConnectivityManager.Stub {
*/
private NetworkStateTracker mNetTrackers[];
/**
* The link properties that define the current links
*/
private LinkProperties mCurrentLinkProperties[];
/**
* A per Net list of the PID's that requested access to the net
* used both as a refcount and for per-PID DNS selection
@@ -302,6 +310,7 @@ public class ConnectivityService extends IConnectivityManager.Stub {
mNetTrackers = new NetworkStateTracker[
ConnectivityManager.MAX_NETWORK_TYPE+1];
mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1];
mNetworkPreference = getPersistedNetworkPreference();
@@ -442,6 +451,7 @@ public class ConnectivityService extends IConnectivityManager.Stub {
mNetConfigs[netType].radio);
continue;
}
mCurrentLinkProperties[netType] = mNetTrackers[netType].getLinkProperties();
}
mTethering = new Tethering(mContext, mHandler.getLooper());
@@ -1409,6 +1419,8 @@ public class ConnectivityService extends IConnectivityManager.Stub {
* right routing table entries exist.
*/
private void handleConnectivityChange(int netType, boolean doReset) {
int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0;
/*
* If a non-default network is enabled, add the host routes that
* will allow it's DNS servers to be accessed.
@@ -1416,6 +1428,45 @@ public class ConnectivityService extends IConnectivityManager.Stub {
handleDnsConfigurationChange(netType);
if (mNetTrackers[netType].getNetworkInfo().isConnected()) {
LinkProperties newLp = mNetTrackers[netType].getLinkProperties();
LinkProperties curLp = mCurrentLinkProperties[netType];
mCurrentLinkProperties[netType] = newLp;
if (VDBG) {
log("handleConnectivityChange: changed linkProperty[" + netType + "]:" +
" doReset=" + doReset + " resetMask=" + resetMask +
"\n curLp=" + curLp +
"\n newLp=" + newLp);
}
if (curLp.isIdenticalInterfaceName(newLp)) {
CompareAddressesResult car = curLp.compareAddresses(newLp);
if ((car.removed.size() != 0) || (car.added.size() != 0)) {
for (LinkAddress linkAddr : car.removed) {
if (linkAddr.getAddress() instanceof Inet4Address) {
resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES;
}
if (linkAddr.getAddress() instanceof Inet6Address) {
resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES;
}
}
if (DBG) {
log("handleConnectivityChange: addresses changed" +
" linkProperty[" + netType + "]:" + " resetMask=" + resetMask +
"\n car=" + car);
}
} else {
if (DBG) {
log("handleConnectivityChange: address are the same reset per doReset" +
" linkProperty[" + netType + "]:" +
" resetMask=" + resetMask);
}
}
} else {
resetMask = NetworkUtils.RESET_ALL_ADDRESSES;
log("handleConnectivityChange: interface not not equivalent reset both" +
" linkProperty[" + netType + "]:" +
" resetMask=" + resetMask);
}
if (mNetConfigs[netType].isDefault()) {
handleApplyDefaultProxy(netType);
addDefaultRoute(mNetTrackers[netType]);
@@ -1430,15 +1481,13 @@ public class ConnectivityService extends IConnectivityManager.Stub {
}
}
if (doReset) {
if (doReset || resetMask != 0) {
LinkProperties linkProperties = mNetTrackers[netType].getLinkProperties();
if (linkProperties != null) {
String iface = linkProperties.getInterfaceName();
if (TextUtils.isEmpty(iface) == false) {
if (DBG) {
log("resetConnections(" + iface + ", NetworkUtils.RESET_ALL_ADDRESSES)");
}
NetworkUtils.resetConnections(iface, NetworkUtils.RESET_ALL_ADDRESSES);
if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")");
NetworkUtils.resetConnections(iface, resetMask);
}
}
}