LineageOS/android_packages_modules_Connectivity
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Merge changes I31d5260d,Ied92f558 into nyc-dev

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* changes:
  Start VPN as early as possible during startup
  Split network agent created state from connected state
This commit is contained in:
Robin Lee
2016-05-04 18:35:17 +00:00
committed by Android (Google) Code Review
parent 20f253eb7d c4980d88aa
commit c58c9ae0a9
2 changed files with 45 additions and 27 deletions
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34
services/core/java/com/android/server/ConnectivityService.java
View File

@@ -741,7 +741,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
//set up the listener for user state for creating user VPNs
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_USER_STARTING);
intentFilter.addAction(Intent.ACTION_USER_STARTED);
intentFilter.addAction(Intent.ACTION_USER_STOPPED);
intentFilter.addAction(Intent.ACTION_USER_ADDED);
intentFilter.addAction(Intent.ACTION_USER_REMOVED);
@@ -1979,7 +1979,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) {
Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability.");
}
if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities(
if (nai.everConnected && !nai.networkCapabilities.equalImmutableCapabilities(
networkCapabilities)) {
Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: "
+ nai.networkCapabilities + " -> " + networkCapabilities);
@@ -1990,13 +1990,14 @@ public class ConnectivityService extends IConnectivityManager.Stub
case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: {
if (VDBG) {
log("Update of LinkProperties for " + nai.name() +
"; created=" + nai.created);
"; created=" + nai.created +
"; everConnected=" + nai.everConnected);
}
LinkProperties oldLp = nai.linkProperties;
synchronized (nai) {
nai.linkProperties = (LinkProperties)msg.obj;
}
if (nai.created) updateLinkProperties(nai, oldLp);
if (nai.everConnected) updateLinkProperties(nai, oldLp);
break;
}
case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: {
@@ -2028,8 +2029,8 @@ public class ConnectivityService extends IConnectivityManager.Stub
break;
}
case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: {
if (nai.created && !nai.networkMisc.explicitlySelected) {
loge("ERROR: created network explicitly selected.");
if (nai.everConnected && !nai.networkMisc.explicitlySelected) {
loge("ERROR: already-connected network explicitly selected.");
}
nai.networkMisc.explicitlySelected = true;
nai.networkMisc.acceptUnvalidated = (boolean) msg.obj;
@@ -2314,7 +2315,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
// This is whether it is satisfying any NetworkRequests or were it to become validated,
// would it have a chance of satisfying any NetworkRequests.
private boolean unneeded(NetworkAgentInfo nai) {
if (!nai.created || nai.isVPN() || nai.lingering) return false;
if (!nai.everConnected || nai.isVPN() || nai.lingering) return false;
for (NetworkRequestInfo nri : mNetworkRequests.values()) {
// If this Network is already the highest scoring Network for a request, or if
// there is hope for it to become one if it validated, then it is needed.
@@ -2798,9 +2799,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
") by " + uid);
}
synchronized (nai) {
// Validating an uncreated network could result in a call to rematchNetworkAndRequests()
// which isn't meant to work on uncreated networks.
if (!nai.created) return;
// Validating a network that has not yet connected could result in a call to
// rematchNetworkAndRequests() which is not meant to work on such networks.
if (!nai.everConnected) return;
if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, false)) return;
@@ -3699,7 +3700,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL);
if (userId == UserHandle.USER_NULL) return;
if (Intent.ACTION_USER_STARTING.equals(action)) {
if (Intent.ACTION_USER_STARTED.equals(action)) {
onUserStart(userId);
} else if (Intent.ACTION_USER_STOPPED.equals(action)) {
onUserStop(userId);
@@ -4542,7 +4543,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
// validated) of becoming the highest scoring network.
private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork,
ReapUnvalidatedNetworks reapUnvalidatedNetworks) {
if (!newNetwork.created) return;
if (!newNetwork.everConnected) return;
boolean keep = newNetwork.isVPN();
boolean isNewDefault = false;
NetworkAgentInfo oldDefaultNetwork = null;
@@ -4841,7 +4842,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
" to " + state);
}
if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) {
if (!networkAgent.created
&& (state == NetworkInfo.State.CONNECTED
|| (state == NetworkInfo.State.CONNECTING && networkAgent.isVPN()))) {
try {
// This should never fail. Specifying an already in use NetID will cause failure.
if (networkAgent.isVPN()) {
@@ -4861,6 +4864,11 @@ public class ConnectivityService extends IConnectivityManager.Stub
return;
}
networkAgent.created = true;
}
if (!networkAgent.everConnected && state == NetworkInfo.State.CONNECTED) {
networkAgent.everConnected = true;
updateLinkProperties(networkAgent, null);
notifyIfacesChangedForNetworkStats();

38
services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
View File

@@ -48,15 +48,21 @@ import java.util.Comparator;
// 1. registered, uncreated, disconnected, unvalidated
// This state is entered when a NetworkFactory registers a NetworkAgent in any state except
// the CONNECTED state.
// 2. registered, uncreated, connected, unvalidated
// This state is entered when a registered NetworkAgent transitions to the CONNECTED state
// ConnectivityService will tell netd to create the network and immediately transition to
// state #3.
// 3. registered, created, connected, unvalidated
// 2. registered, uncreated, connecting, unvalidated
// This state is entered when a registered NetworkAgent for a VPN network transitions to the
// CONNECTING state (TODO: go through this state for every network, not just VPNs).
// ConnectivityService will tell netd to create the network early in order to add extra UID
// routing rules referencing the netID. These rules need to be in place before the network is
// connected to avoid racing against client apps trying to connect to a half-setup network.
// 3. registered, uncreated, connected, unvalidated
// This state is entered when a registered NetworkAgent transitions to the CONNECTED state.
// ConnectivityService will tell netd to create the network if it was not already created, and
// immediately transition to state #4.
// 4. registered, created, connected, unvalidated
// If this network can satisfy the default NetworkRequest, then NetworkMonitor will
// probe for Internet connectivity.
// If this network cannot satisfy the default NetworkRequest, it will immediately be
// transitioned to state #4.
// transitioned to state #5.
// A network may remain in this state if NetworkMonitor fails to find Internet connectivity,
// for example:
// a. a captive portal is present, or
@@ -64,14 +70,14 @@ import java.util.Comparator;
// c. a wireless connection stops transfering packets temporarily (e.g. device is in elevator
// or tunnel) but does not disconnect from the AP/cell tower, or
// d. a stand-alone device offering a WiFi AP without an uplink for configuration purposes.
// 4. registered, created, connected, validated
// 5. registered, created, connected, validated
//
// The device's default network connection:
// ----------------------------------------
// Networks in states #3 and #4 may be used as a device's default network connection if they
// Networks in states #4 and #5 may be used as a device's default network connection if they
// satisfy the default NetworkRequest.
// A network, that satisfies the default NetworkRequest, in state #4 should always be chosen
// in favor of a network, that satisfies the default NetworkRequest, in state #3.
// A network, that satisfies the default NetworkRequest, in state #5 should always be chosen
// in favor of a network, that satisfies the default NetworkRequest, in state #4.
// When deciding between two networks, that both satisfy the default NetworkRequest, to select
// for the default network connection, the one with the higher score should be chosen.
//
@@ -83,14 +89,14 @@ import java.util.Comparator;
// c. airplane mode is turned on, or
// d. a wireless connection disconnects from AP/cell tower entirely (e.g. device is out of range
// of AP for an extended period of time, or switches to another AP without roaming)
// then that network can transition from any state (#1-#4) to unregistered. This happens by
// then that network can transition from any state (#1-#5) to unregistered. This happens by
// the transport disconnecting their NetworkAgent's AsyncChannel with ConnectivityManager.
// ConnectivityService also tells netd to destroy the network.
//
// When ConnectivityService disconnects a network:
// -----------------------------------------------
// If a network has no chance of satisfying any requests (even if it were to become validated
// and enter state #4), ConnectivityService will disconnect the NetworkAgent's AsyncChannel.
// and enter state #5), ConnectivityService will disconnect the NetworkAgent's AsyncChannel.
// If the network ever for any period of time had satisfied a NetworkRequest (i.e. had been
// the highest scoring that satisfied the NetworkRequest's constraints), but is no longer the
// highest scoring network for any NetworkRequest, then there will be a 30s pause before
@@ -110,10 +116,14 @@ public class NetworkAgentInfo implements Comparable<NetworkAgentInfo> {
public NetworkCapabilities networkCapabilities;
public final NetworkMonitor networkMonitor;
public final NetworkMisc networkMisc;
// Indicates if netd has been told to create this Network. Once created the appropriate routing
// rules are setup and routes are added so packets can begin flowing over the Network.
// Indicates if netd has been told to create this Network. From this point on the appropriate
// routing rules are setup and routes are added so packets can begin flowing over the Network.
// This is a sticky bit; once set it is never cleared.
public boolean created;
// Set to true after the first time this network is marked as CONNECTED. Once set, the network
// shows up in API calls, is able to satisfy NetworkRequests and can become the default network.
// This is a sticky bit; once set it is never cleared.
public boolean everConnected;
// Set to true if this Network successfully passed validation or if it did not satisfy the
// default NetworkRequest in which case validation will not be attempted.
// This is a sticky bit; once set it is never cleared even if future validation attempts fail.