[NS03] Mix in other CS-managed properties (395bde4d) · Commits · e / os / android_frameworks_base

packages/Connectivity/framework/src/android/net/NetworkAgentConfig.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -50,7 +50,8 @@ public final class NetworkAgentConfig implements Parcelable {
		* ap in the wifi settings to trigger a connection is explicit. A 3rd party app asking to
		* connect to a particular access point is also explicit, though this may change in the future
		* as we want apps to use the multinetwork apis.
		*
		* TODO : this is a bad name, because it sounds like the user just tapped on the network.
		* It's not necessarily the case ; auto-reconnection to WiFi has this true for example.
		* @hide
		*/
		public boolean explicitlySelected;

packages/Connectivity/framework/src/android/net/NetworkScore.java

+14 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,8 @@ import android.annotation.NonNull;
		import android.os.Parcel;
		import android.os.Parcelable;

		import com.android.internal.annotations.VisibleForTesting;

		/**
		* Object representing the quality of a network as perceived by the user.
		*
		@@ -35,6 +37,10 @@ public final class NetworkScore implements Parcelable {

		// Agent-managed policies
		// TODO : add them here, starting from 1
		/** @hide */
		public static final int MIN_AGENT_MANAGED_POLICY = 0;
		/** @hide */
		public static final int MAX_AGENT_MANAGED_POLICY = -1;

		// Bitmask of all the policies applied to this score.
		private final long mPolicies;
		@@ -54,6 +60,14 @@ public final class NetworkScore implements Parcelable {
		return mLegacyInt;
		}

		/**
		* @return whether this score has a particular policy.
		*/
		@VisibleForTesting
		public boolean hasPolicy(final int policy) {
		return 0 != (mPolicies & (1L << policy));
		}

		@Override
		public String toString() {
		return "Score(" + mLegacyInt + ")";

services/core/java/com/android/server/ConnectivityService.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -3005,6 +3005,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
		case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: {
		if (nai.everConnected) {
		loge("ERROR: cannot call explicitlySelected on already-connected network");
		// Note that if the NAI had been connected, this would affect the
		// score, and therefore would require re-mixing the score and performing
		// a rematch.
		}
		nai.networkAgentConfig.explicitlySelected = toBool(msg.arg1);
		nai.networkAgentConfig.acceptUnvalidated = toBool(msg.arg1) && toBool(msg.arg2);
		@@ -4089,6 +4092,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
		// network, we should respect the user's option and don't need to popup the
		// PARTIAL_CONNECTIVITY notification to user again.
		nai.networkAgentConfig.acceptPartialConnectivity = accept;
		nai.updateScoreForNetworkAgentConfigUpdate();
		rematchAllNetworksAndRequests();
		sendUpdatedScoreToFactories(nai);
		}

services/core/java/com/android/server/connectivity/ConnectivityConstants.java

+1 −9

Original line number	Diff line number	Diff line
		@@ -18,18 +18,10 @@ package com.android.server.connectivity;

		/**
		* A class encapsulating various constants used by Connectivity.
		* TODO : remove this class.
		* @hide
		*/
		public class ConnectivityConstants {

		// Penalty applied to scores of Networks that have not been validated.
		public static final int UNVALIDATED_SCORE_PENALTY = 40;

		// Score for explicitly connected network.
		//
		// This ensures that a) the explicitly selected network is never trumped by anything else, and
		// b) the explicitly selected network is never torn down.
		public static final int EXPLICITLY_SELECTED_NETWORK_SCORE = 100;
		// VPNs typically have priority over other networks. Give them a score that will
		// let them win every single time.
		public static final int VPN_DEFAULT_SCORE = 101;

services/core/java/com/android/server/connectivity/FullScore.java

+151 −8

Original line number	Diff line number	Diff line
		@@ -16,9 +16,21 @@

		package com.android.server.connectivity;

		import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED;
		import static android.net.NetworkCapabilities.TRANSPORT_VPN;

		import android.annotation.IntDef;
		import android.annotation.NonNull;
		import android.net.NetworkAgentConfig;
		import android.net.NetworkCapabilities;
		import android.net.NetworkScore;

		import com.android.internal.annotations.VisibleForTesting;

		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;
		import java.util.StringJoiner;

		/**
		* This class represents how desirable a network is.
		*
		@@ -31,11 +43,54 @@ public class FullScore {
		// a migration.
		private final int mLegacyInt;

		/** @hide */
		@Retention(RetentionPolicy.SOURCE)
		@IntDef(prefix = {"POLICY_"}, value = {
		POLICY_IS_VALIDATED,
		POLICY_IS_VPN,
		POLICY_EVER_USER_SELECTED,
		POLICY_ACCEPT_UNVALIDATED
		})
		public @interface Policy {
		}

		// Agent-managed policies are in NetworkScore. They start from 1.
		// CS-managed policies
		// CS-managed policies, counting from 63 downward
		// This network is validated. CS-managed because the source of truth is in NetworkCapabilities.
		/** @hide */
		public static final int POLICY_IS_VALIDATED = 63;

		// This is a VPN and behaves as one for scoring purposes.
		/** @hide */
		public static final int POLICY_IS_VPN = 62;

		// This network has been selected by the user manually from settings or a 3rd party app
		// at least once. {@see NetworkAgentConfig#explicitlySelected}.
		/** @hide */
		public static final int POLICY_EVER_USER_SELECTED = 61;

		// The user has indicated in UI that this network should be used even if it doesn't
		// validate. {@see NetworkAgentConfig#acceptUnvalidated}.
		/** @hide */
		public static final int POLICY_ACCEPT_UNVALIDATED = 60;

		// To help iterate when printing
		@VisibleForTesting
		static final int MIN_CS_MANAGED_POLICY = POLICY_ACCEPT_UNVALIDATED;
		@VisibleForTesting
		static final int MAX_CS_MANAGED_POLICY = POLICY_IS_VALIDATED;

		@VisibleForTesting
		static @NonNull String policyNameOf(final int policy) {
		switch (policy) {
		case POLICY_IS_VALIDATED: return "IS_VALIDATED";
		case POLICY_IS_VPN: return "IS_VPN";
		case POLICY_EVER_USER_SELECTED: return "EVER_USER_SELECTED";
		case POLICY_ACCEPT_UNVALIDATED: return "ACCEPT_UNVALIDATED";
		}
		throw new IllegalArgumentException("Unknown policy : " + policy);
		}

		// Bitmask of all the policies applied to this score.
		private final long mPolicies;

		@@ -45,12 +100,46 @@ public class FullScore {
		}

		/**
		* Make a FullScore from a NetworkScore
		* Given a score supplied by the NetworkAgent and CS-managed objects, produce a full score.
		*
		* @param score the score supplied by the agent
		* @param caps the NetworkCapabilities of the network
		* @param config the NetworkAgentConfig of the network
		* @return an FullScore that is appropriate to use for ranking.
		*/
		public static FullScore withPolicy(@NonNull final NetworkScore originalScore,
		final boolean isValidated) {
		return new FullScore(originalScore.getLegacyInt(),
		isValidated ? 1L << POLICY_IS_VALIDATED : 0L);
		public static FullScore fromNetworkScore(@NonNull final NetworkScore score,
		@NonNull final NetworkCapabilities caps, @NonNull final NetworkAgentConfig config) {
		return withPolicies(score.getLegacyInt(), caps.hasCapability(NET_CAPABILITY_VALIDATED),
		caps.hasTransport(TRANSPORT_VPN),
		config.explicitlySelected,
		config.acceptUnvalidated);
		}

		/**
		* Return a new score given updated caps and config.
		*
		* @param caps the NetworkCapabilities of the network
		* @param config the NetworkAgentConfig of the network
		* @return a score with the policies from the arguments reset
		*/
		public FullScore mixInScore(@NonNull final NetworkCapabilities caps,
		@NonNull final NetworkAgentConfig config) {
		return withPolicies(mLegacyInt, caps.hasCapability(NET_CAPABILITY_VALIDATED),
		caps.hasTransport(TRANSPORT_VPN),
		config.explicitlySelected,
		config.acceptUnvalidated);
		}

		private static FullScore withPolicies(@NonNull final int legacyInt,
		final boolean isValidated,
		final boolean isVpn,
		final boolean everUserSelected,
		final boolean acceptUnvalidated) {
		return new FullScore(legacyInt,
		(isValidated ? 1L << POLICY_IS_VALIDATED : 0)
		\| (isVpn ? 1L << POLICY_IS_VPN : 0)
		\| (everUserSelected ? 1L << POLICY_EVER_USER_SELECTED : 0)
		\| (acceptUnvalidated ? 1L << POLICY_ACCEPT_UNVALIDATED : 0));
		}

		/**
		@@ -58,11 +147,65 @@ public class FullScore {
		* This will be removed before S is published.
		*/
		public int getLegacyInt() {
		return mLegacyInt;
		return getLegacyInt(false /* pretendValidated */);
		}

		public int getLegacyIntAsValidated() {
		return getLegacyInt(true /* pretendValidated */);
		}

		// TODO : remove these two constants
		// Penalty applied to scores of Networks that have not been validated.
		private static final int UNVALIDATED_SCORE_PENALTY = 40;

		// Score for a network that can be used unvalidated
		private static final int ACCEPT_UNVALIDATED_NETWORK_SCORE = 100;

		private int getLegacyInt(boolean pretendValidated) {
		// If the user has chosen this network at least once, give it the maximum score when
		// checking to pretend it's validated, or if it doesn't need to validate because the
		// user said to use it even if it doesn't validate.
		// This ensures that networks that have been selected in UI are not torn down before the
		// user gets a chance to prefer it when a higher-scoring network (e.g., Ethernet) is
		// available.
		if (hasPolicy(POLICY_EVER_USER_SELECTED)
		&& (hasPolicy(POLICY_ACCEPT_UNVALIDATED) \|\| pretendValidated)) {
		return ACCEPT_UNVALIDATED_NETWORK_SCORE;
		}

		int score = mLegacyInt;
		// Except for VPNs, networks are subject to a penalty for not being validated.
		// Apply the penalty unless the network is a VPN, or it's validated or pretending to be.
		if (!hasPolicy(POLICY_IS_VALIDATED) && !pretendValidated && !hasPolicy(POLICY_IS_VPN)) {
		score -= UNVALIDATED_SCORE_PENALTY;
		}
		if (score < 0) score = 0;
		return score;
		}

		/**
		* @return whether this score has a particular policy.
		*/
		@VisibleForTesting
		public boolean hasPolicy(final int policy) {
		return 0 != (mPolicies & (1L << policy));
		}

		// Example output :
		// Score(50 ; Policies : EVER_USER_SELECTED&IS_VALIDATED)
		@Override
		public String toString() {
		return "Score(" + mLegacyInt + ")";
		final StringJoiner sj = new StringJoiner(
		"&", // delimiter
		"Score(" + mLegacyInt + " ; Policies : ", // prefix
		")"); // suffix
		for (int i = NetworkScore.MIN_AGENT_MANAGED_POLICY;
		i <= NetworkScore.MAX_AGENT_MANAGED_POLICY; ++i) {
		if (hasPolicy(i)) sj.add(policyNameOf(i));
		}
		for (int i = MIN_CS_MANAGED_POLICY; i <= MAX_CS_MANAGED_POLICY; ++i) {
		if (hasPolicy(i)) sj.add(policyNameOf(i));
		}
		return sj.toString();
		}
		}