LineageOS/android_packages_modules_Connectivity
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Always try to set/remove default routes

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Must clean up default route if a default 3g connection is replaced
by a non-default (ie, mms) connection on the same interface.

Also stop mucking with all connections dns and routes - do it only
for the connection that has changed.

bug:2865974
Change-Id: I589a0b2768b5e67b608fde181e7ddbd7fce4f491
This commit is contained in:
Robert Greenwalt
2010-07-23 15:46:26 -07:00
parent 653e2a2f64
commit 3afbead19f
1 changed files with 54 additions and 77 deletions
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131
services/java/com/android/server/ConnectivityService.java
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@@ -605,7 +605,7 @@ public class ConnectivityService extends IConnectivityManager.Stub {
!network.isTeardownRequested()) {
if (ni.isConnected() == true) {
// add the pid-specific dns
handleDnsConfigurationChange();
handleDnsConfigurationChange(networkType);
if (DBG) Slog.d(TAG, "special network already active");
return Phone.APN_ALREADY_ACTIVE;
}
@@ -967,7 +967,7 @@ public class ConnectivityService extends IConnectivityManager.Stub {
}
}
// do this before we broadcast the change
handleConnectivityChange();
handleConnectivityChange(prevNetType);
sendStickyBroadcast(intent);
/*
@@ -1123,9 +1123,6 @@ public class ConnectivityService extends IConnectivityManager.Stub {
}
}
// do this before we broadcast the change
handleConnectivityChange();
sendStickyBroadcast(intent);
/*
* If the failover network is already connected, then immediately send
@@ -1204,7 +1201,7 @@ public class ConnectivityService extends IConnectivityManager.Stub {
}
thisNet.setTeardownRequested(false);
updateNetworkSettings(thisNet);
handleConnectivityChange();
handleConnectivityChange(type);
sendConnectedBroadcast(info);
}
@@ -1231,38 +1228,29 @@ public class ConnectivityService extends IConnectivityManager.Stub {
}
/**
* After any kind of change in the connectivity state of any network,
* make sure that anything that depends on the connectivity state of
* more than one network is set up correctly. We're mainly concerned
* with making sure that the list of DNS servers is set up according
* to which networks are connected, and ensuring that the right routing
* table entries exist.
* After a change in the connectivity state of a network. We're mainly
* concerned with making sure that the list of DNS servers is set up
* according to which networks are connected, and ensuring that the
* right routing table entries exist.
*/
private void handleConnectivityChange() {
private void handleConnectivityChange(int netType) {
/*
* If a non-default network is enabled, add the host routes that
* will allow it's DNS servers to be accessed. Only
* If both mobile and wifi are enabled, add the host routes that
* will allow MMS traffic to pass on the mobile network. But
* remove the default route for the mobile network, so that there
* will be only one default route, to ensure that all traffic
* except MMS will travel via Wi-Fi.
* will allow it's DNS servers to be accessed.
*/
handleDnsConfigurationChange();
handleDnsConfigurationChange(netType);
for (int netType : mPriorityList) {
if (mNetTrackers[netType].getNetworkInfo().isConnected()) {
if (mNetAttributes[netType].isDefault()) {
addDefaultRoute(mNetTrackers[netType]);
} else {
addPrivateDnsRoutes(mNetTrackers[netType]);
}
if (mNetTrackers[netType].getNetworkInfo().isConnected()) {
if (mNetAttributes[netType].isDefault()) {
addDefaultRoute(mNetTrackers[netType]);
} else {
if (mNetAttributes[netType].isDefault()) {
removeDefaultRoute(mNetTrackers[netType]);
} else {
removePrivateDnsRoutes(mNetTrackers[netType]);
}
addPrivateDnsRoutes(mNetTrackers[netType]);
}
} else {
if (mNetAttributes[netType].isDefault()) {
removeDefaultRoute(mNetTrackers[netType]);
} else {
removePrivateDnsRoutes(mNetTrackers[netType]);
}
}
}
@@ -1310,18 +1298,13 @@ public class ConnectivityService extends IConnectivityManager.Stub {
if (p == null) return;
String interfaceName = p.getInterfaceName();
InetAddress defaultGatewayAddr = p.getGateway();
boolean defaultRouteSet = nt.isDefaultRouteSet();
if ((interfaceName != null) && (defaultGatewayAddr != null ) &&
(defaultRouteSet == false)) {
boolean error = (NetworkUtils.setDefaultRoute(interfaceName, defaultGatewayAddr) < 0);
if (DBG && !error) {
if ((interfaceName != null) && (defaultGatewayAddr != null )) {
if ((NetworkUtils.setDefaultRoute(interfaceName, defaultGatewayAddr) >= 0) && DBG) {
NetworkInfo networkInfo = nt.getNetworkInfo();
Slog.d(TAG, "addDefaultRoute for " + networkInfo.getTypeName() +
" (" + interfaceName + "), GatewayAddr=" + defaultGatewayAddr);
}
nt.defaultRouteSet(!error);
}
}
@@ -1330,16 +1313,13 @@ public class ConnectivityService extends IConnectivityManager.Stub {
NetworkProperties p = nt.getNetworkProperties();
if (p == null) return;
String interfaceName = p.getInterfaceName();
boolean defaultRouteSet = nt.isDefaultRouteSet();
if (interfaceName != null && defaultRouteSet == true) {
boolean error = (NetworkUtils.removeDefaultRoute(interfaceName) < 0);
if (DBG && !error) {
if (interfaceName != null) {
if ((NetworkUtils.removeDefaultRoute(interfaceName) >= 0) && DBG) {
NetworkInfo networkInfo = nt.getNetworkInfo();
Slog.d(TAG, "removeDefaultRoute for " + networkInfo.getTypeName() + " (" +
interfaceName + ")");
}
nt.defaultRouteSet(error);
}
}
@@ -1480,42 +1460,37 @@ public class ConnectivityService extends IConnectivityManager.Stub {
SystemProperties.set("net.dnschange", "" + (n+1));
}
private void handleDnsConfigurationChange() {
private void handleDnsConfigurationChange(int netType) {
// add default net's dns entries
for (int x = mPriorityList.length-1; x>= 0; x--) {
int netType = mPriorityList[x];
NetworkStateTracker nt = mNetTrackers[netType];
if (nt != null && nt.getNetworkInfo().isConnected() &&
!nt.isTeardownRequested()) {
NetworkProperties p = nt.getNetworkProperties();
if (p == null) continue;
Collection<InetAddress> dnses = p.getDnses();
if (mNetAttributes[netType].isDefault()) {
int j = 1;
for (InetAddress dns : dnses) {
if (DBG) {
Slog.d(TAG, "adding dns " + dns + " for " +
nt.getNetworkInfo().getTypeName());
}
SystemProperties.set("net.dns" + j++, dns.getHostAddress());
}
for (int k=j ; k<mNumDnsEntries; k++) {
if (DBG) Slog.d(TAG, "erasing net.dns" + k);
SystemProperties.set("net.dns" + k, "");
}
mNumDnsEntries = j;
} else {
// set per-pid dns for attached secondary nets
List pids = mNetRequestersPids[netType];
for (int y=0; y< pids.size(); y++) {
Integer pid = (Integer)pids.get(y);
writePidDns(dnses, pid.intValue());
NetworkStateTracker nt = mNetTrackers[netType];
if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) {
NetworkProperties p = nt.getNetworkProperties();
if (p == null) return;
Collection<InetAddress> dnses = p.getDnses();
if (mNetAttributes[netType].isDefault()) {
int j = 1;
for (InetAddress dns : dnses) {
if (DBG) {
Slog.d(TAG, "adding dns " + dns + " for " +
nt.getNetworkInfo().getTypeName());
}
SystemProperties.set("net.dns" + j++, dns.getHostAddress());
}
for (int k=j ; k<mNumDnsEntries; k++) {
if (DBG) Slog.d(TAG, "erasing net.dns" + k);
SystemProperties.set("net.dns" + k, "");
}
mNumDnsEntries = j;
} else {
// set per-pid dns for attached secondary nets
List pids = mNetRequestersPids[netType];
for (int y=0; y< pids.size(); y++) {
Integer pid = (Integer)pids.get(y);
writePidDns(dnses, pid.intValue());
}
}
bumpDns();
}
bumpDns();
}
private int getRestoreDefaultNetworkDelay() {
@@ -1654,9 +1629,11 @@ public class ConnectivityService extends IConnectivityManager.Stub {
(Notification) msg.obj);
case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED:
handleDnsConfigurationChange();
// TODO - make this handle ip/proxy/gateway/dns changes
info = (NetworkInfo) msg.obj;
type = info.getType();
handleDnsConfigurationChange(type);
break;
case NetworkStateTracker.EVENT_ROAMING_CHANGED:
// fill me in
break;