Chg: update image tag in helm values to v2.8.0

Signed-off-by: Johann Hoffmann <johann.hoffmann@mailbox.org>

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
       DOCKER_REGISTRY_USERNAME: ucentral
     steps:
     - name: Checkout actions repo
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         repository: Telecominfraproject/.github
         path: github
@@ -57,7 +57,7 @@ jobs:
       - docker
     steps:
     - name: Checkout actions repo
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         repository: Telecominfraproject/.github
         path: github

.github/workflows/enforce-jira-issue-key.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout actions repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           repository: Telecominfraproject/.github
           path: github

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       HELM_REPO_USERNAME: ucentral
     steps:
       - name: Checkout uCentral assembly chart repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           path: wlan-cloud-rrm
 

.gitignore

@@ -1,6 +1,12 @@
 /target/
 */target/
 
+# owrrm specific
+*.log*
+device_config.json
+settings.json
+topology.json
+
 # Eclipse
 .settings/
 bin/
@@ -17,3 +23,5 @@ bin/
 
 # Miscellaneous files thzt should not be checked in
 temp/
+
+.DS_Store

Dockerfile

@@ -3,18 +3,20 @@ WORKDIR /usr/src/java
 COPY . .
 RUN mvn clean package -pl owrrm -am -DappendVersionString="$(./scripts/get_build_version.sh)"
 
-FROM adoptopenjdk/openjdk11-openj9:latest
+FROM ibm-semeru-runtimes:open-11-jre
-RUN apt-get update && apt-get install -y gettext-base wget
+RUN apt-get update && apt-get install -y gettext-base
-RUN wget https://raw.githubusercontent.com/Telecominfraproject/wlan-cloud-ucentral-deploy/main/docker-compose/certs/restapi-ca.pem \
+ADD https://raw.githubusercontent.com/Telecominfraproject/wlan-cloud-ucentral-deploy/main/docker-compose/certs/restapi-ca.pem \
-    -O /usr/local/share/ca-certificates/restapi-ca-selfsigned.pem
+  /usr/local/share/ca-certificates/restapi-ca-selfsigned.pem
 RUN mkdir /owrrm-data
 WORKDIR /usr/src/java
 COPY docker-entrypoint.sh /
+COPY runner.sh /
 COPY --from=build /usr/src/java/owrrm/target/openwifi-rrm.jar /usr/local/bin/
 EXPOSE 16789 16790
 ENTRYPOINT ["/docker-entrypoint.sh"]
-CMD ["java", "-XX:+IdleTuningGcOnIdle", "-Xtune:virtualized", \
+ENV JVM_IMPL=openj9
-     "-jar", "/usr/local/bin/openwifi-rrm.jar", \
+CMD ["/runner.sh", "java", "/usr/local/bin/openwifi-rrm.jar", \
-     "run", "--config-env", \
+    "run", \
-     "-t", "/owrrm-data/topology.json", \
+    "--config-env", \
-     "-d", "/owrrm-data/device_config.json"]
+    "-t", "/owrrm-data/topology.json", \
+    "-d", "/owrrm-data/device_config.json"]

Dockerfile-hotspot

@@ -0,0 +1,28 @@
+FROM maven:3-eclipse-temurin-11 as build
+WORKDIR /usr/src/java
+COPY . .
+RUN mvn clean package -pl owrrm -am -DappendVersionString="$(./scripts/get_build_version.sh)"
+
+FROM eclipse-temurin:11-jre-jammy
+RUN apt-get update && apt-get install -y gettext-base
+ADD https://raw.githubusercontent.com/Telecominfraproject/wlan-cloud-ucentral-deploy/main/docker-compose/certs/restapi-ca.pem \
+  /usr/local/share/ca-certificates/restapi-ca-selfsigned.pem
+RUN mkdir /owrrm-data
+WORKDIR /usr/src/java
+COPY docker-entrypoint.sh /
+COPY runner.sh /
+COPY --from=build /usr/src/java/owrrm/target/openwifi-rrm.jar /usr/local/bin/
+
+# generate Application CDS
+RUN java -Xshare:off -XX:DumpLoadedClassList=static-cds.lst -jar /usr/local/bin/openwifi-rrm.jar --help  && \
+    java -Xshare:dump -XX:SharedClassListFile=static-cds.lst -XX:SharedArchiveFile=static-cds.jsa -jar /usr/local/bin/openwifi-rrm.jar
+
+EXPOSE 16789 16790
+ENTRYPOINT ["/docker-entrypoint.sh"]
+ENV JVM_IMPL=hotspot
+ENV EXTRA_JVM_FLAGS="-XX:SharedArchiveFile=static-cds.jsa -Xshare:auto"
+CMD ["/runner.sh", "java", "/usr/local/bin/openwifi-rrm.jar", \
+    "run", \
+    "--config-env", \
+    "-t", "/owrrm-data/topology.json", \
+    "-d", "/owrrm-data/device_config.json"]

helm/values.yaml

@@ -9,7 +9,7 @@ fullnameOverride: ""
 images:
   owrrm:
     repository: tip-tip-wlan-cloud-ucentral.jfrog.io/owrrm
-    tag: main
+    tag: v2.8.0
     pullPolicy: Always
 #    regcred:
 #      registry: tip-tip-wlan-cloud-ucentral.jfrog.io

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/AggregatedState.java

@@ -10,11 +10,12 @@ package com.facebook.openwifi.cloudsdk;
 
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Map;
 import java.util.Objects;
 
+import com.facebook.openwifi.cloudsdk.models.ap.State;
+import com.facebook.openwifi.cloudsdk.models.ap.State.Interface.Counters;
 import com.facebook.openwifi.cloudsdk.models.ap.State.Interface.SSID.Association;
-import com.facebook.openwifi.cloudsdk.models.ap.State.Interface.SSID.Association.Rate;
+import com.google.gson.JsonObject;
 
 /**
  * Aggregation model for State aggregation. Only contains info useful for
@@ -22,76 +23,32 @@ import com.facebook.openwifi.cloudsdk.models.ap.State.Interface.SSID.Association
  */
 public class AggregatedState {
 
-	/** Rate information with aggregated fields. */
-	public static class AggregatedRate {
-		/**
-		 * This is the common bitRate for all the aggregated fields.
-		 */
-		public long bitRate;
-
-		/**
-		 * This is the common channel width for all the aggregated fields.
-		 */
-		public int chWidth;
-
-		/**
-		 * Aggregated fields mcs
-		 */
-		public List<Integer> mcs = new ArrayList<>();
-
-		/** Constructor with no args */
-		private AggregatedRate() {}
-
-		/** Add a Rate to the AggregatedRate */
-		private void add(Rate rate) {
-			if (rate == null) {
-				return;
-			}
-			if (mcs.isEmpty()) {
-				bitRate = rate.bitrate;
-				chWidth = rate.chwidth;
-			}
-			mcs.add(rate.mcs);
-		}
-
-		/**
-		 * Add an AggregatedRate with the same channel_width to the
-		 * AggregatedRate
-		 */
-		private void add(AggregatedRate rate) {
-			if (rate == null || rate.chWidth != chWidth) {
-				return;
-			}
-			if (mcs.isEmpty()) {
-				bitRate = rate.bitRate;
-				chWidth = rate.chWidth;
-			}
-			mcs.addAll(rate.mcs);
-		}
-	}
-
 	/**
 	 * Radio information with channel, channel_width and tx_power.
 	 */
-	public static class Radio {
+	public static class RadioConfig {
 		public int channel;
 		public int channelWidth;
 		public int txPower;
+		public String phy;
 
-		private Radio() {}
+		/** Default constructor with no args */
+		private RadioConfig() {}
 
-		public Radio(int channel, int channelWidth, int txPower) {
+		/** Constructor with args */
+		public RadioConfig(JsonObject radio) {
+			this.channel = radio.get("channel").getAsInt();
+			this.channelWidth = radio.get("channel_width").getAsInt();
+			this.txPower = radio.get("tx_power").getAsInt();
+			this.phy = radio.get("phy").getAsString();
+		}
+
+		public RadioConfig(int channel, int channelWidth, int txPower) {
 			this.channel = channel;
 			this.channelWidth = channelWidth;
 			this.txPower = txPower;
 		}
 
-		private Radio(Map<String, Integer> radioInfo) {
-			channel = radioInfo.getOrDefault("channel", -1);
-			channelWidth = radioInfo.getOrDefault("channel_width", -1);
-			txPower = radioInfo.getOrDefault("tx_power", -1);
-		}
-
 		@Override
 		public int hashCode() {
 			return Objects.hash(channel, channelWidth, txPower);
@@ -109,64 +66,161 @@ public class AggregatedState {
 				return false;
 			}
 
-			Radio other = (Radio) obj;
+			RadioConfig other = (RadioConfig) obj;
 			return channel == other.channel &&
 				channelWidth == other.channelWidth && txPower == other.txPower;
 		}
 	}
 
-	public String bssid;
+	/**
-	public String station;
+	 * Data model to keep raw data from {@link State.Interface.SSID.Association},
-	public long connected;
+	 * {@link State.Radio} and {@link State.Interface.Counters}.
-	public long inactive;
+	 */
-	public List<Integer> rssi;
+	public static class AssociationInfo {
-	public long rxBytes;
+		/** Rate information with aggregated fields. */
-	public long rxPackets;
+		public static class Rate {
-	public AggregatedRate rxRate;
+			/**
-	public long txBytes;
+			 * Aggregated fields bitRate
-	public long txDuration;
+			 */
-	public long txFailed;
+			public long bitRate;
-	public long txPackets;
-	public AggregatedRate txRate;
-	public long txRetries;
-	public int ackSignal;
-	public int ackSignalAvg;
-	public Radio radio;
 
-	/** Constructor with no args */
+			/**
-	public AggregatedState() {
+			 * Aggregated fields chWidth
-		this.rxRate = new AggregatedRate();
+			 */
-		this.txRate = new AggregatedRate();
+			public int chWidth;
-		this.rssi = new ArrayList<>();
+
-		this.radio = new Radio();
+			/**
+			 * Aggregated fields mcs
+			 */
+			public int mcs;
+
+			/** Constructor with no args */
+			private Rate() {}
+
+			/** Constructor with args */
+			private Rate(long bitRate, int chWidth, int mcs) {
+				this.bitRate = bitRate;
+				this.chWidth = chWidth;
+				this.mcs = mcs;
+			}
+		}
+
+		public long connected;
+		public long inactive;
+		public int rssi;
+		public long rxBytes;
+		public long rxPackets;
+		public Rate rxRate;
+		public long txBytes;
+		public long txDuration;
+		public long txFailed;
+		public long txPackets;
+		public Rate txRate;
+		public long txRetries;
+		public int ackSignal;
+		public int ackSignalAvg;
+		public long txPacketsCounters;
+		public long txErrorsCounters;
+		public long txDroppedCounters;
+		public long activeMsRadio;
+		public long busyMsRadio;
+		public long noiseRadio;
+		public long receiveMsRadio;
+		public long transmitMsRadio;
+
+		/** unix time in ms */
+		public long timestamp;
+
+		/** Default Constructor. */
+		public AssociationInfo() {}
+
+		/** Constructor with only rssi(for test purpose) */
+		public AssociationInfo(int rssi) {
+			this.rssi = rssi;
+		}
+
+		/** Constructor with args */
+		public AssociationInfo(
+			Association association,
+			Counters counters,
+			JsonObject radio,
+			long timestamp
+		) {
+			// Association info
+			connected = association.connected;
+			inactive = association.inactive;
+			rssi = association.rssi;
+			rxBytes = association.rx_bytes;
+			rxPackets = association.rx_packets;
+			if (association.rx_rate != null) {
+				rxRate = new Rate(
+					association.rx_rate.bitrate,
+					association.rx_rate.chwidth,
+					association.rx_rate.mcs
+				);
+			} else {
+				rxRate = new Rate();
+			}
+
+			txBytes = association.tx_bytes;
+			txPackets = association.tx_packets;
+
+			if (association.tx_rate != null) {
+				txRate = new Rate(
+					association.tx_rate.bitrate,
+					association.tx_rate.chwidth,
+					association.tx_rate.mcs
+				);
+			} else {
+				txRate = new Rate();
+			}
+			txRetries = association.tx_retries;
+			ackSignal = association.ack_signal;
+			ackSignalAvg = association.ack_signal_avg;
+
+			//Counters info
+			txPacketsCounters = counters.tx_packets;
+			txErrorsCounters = counters.tx_errors;
+			txDroppedCounters = counters.tx_dropped;
+
+			// Radio info
+			activeMsRadio = radio.get("active_ms").getAsLong();
+			busyMsRadio = radio.get("busy_ms").getAsLong();
+			transmitMsRadio = radio.get("transmit_ms").getAsLong();
+			receiveMsRadio = radio.get("receive_ms").getAsLong();
+			noiseRadio = radio.get("noise").getAsLong();
+
+			this.timestamp = timestamp;
+		}
 	}
 
-	/** Construct from Association and radio */
+	// Aggregate AssociationInfo over bssid, station and RadioConfig.
+	public String bssid;
+	public String station;
+	public RadioConfig radioConfig;
+
+	// Store a list of AssociationInfo of the same link and radio configuration. */
+	public List<AssociationInfo> associationInfoList;
+
+	/** Constructor with no args. For test purpose. */
+	public AggregatedState() {
+		this.associationInfoList = new ArrayList<>();
+		this.radioConfig = new RadioConfig();
+	}
+
+	/** Construct from Association, Counters, Radio and time stamp */
 	public AggregatedState(
 		Association association,
-		Map<String, Integer> radioInfo
+		Counters counters,
+		JsonObject radio,
+		long timestamp
 	) {
-		this.rxRate = new AggregatedRate();
-		this.txRate = new AggregatedRate();
-		this.rssi = new ArrayList<>();
-
 		this.bssid = association.bssid;
 		this.station = association.station;
-		this.connected = association.connected;
+		this.associationInfoList = new ArrayList<>();
-		this.inactive = association.inactive;
+		associationInfoList
-		this.rssi.add(association.rssi);
+			.add(new AssociationInfo(association, counters, radio, timestamp));
-		this.rxBytes = association.rx_bytes;
+		this.radioConfig = new RadioConfig(radio);
-		this.rxPackets = association.rx_packets;
-		this.rxRate.add(association.rx_rate);
-		this.txBytes = association.tx_bytes;
-		this.txDuration = association.tx_duration;
-		this.txFailed = association.tx_failed;
-		this.txPackets = association.tx_packets;
-		this.txRate.add(association.tx_rate);
-		this.txRetries = association.tx_retries;
-		this.ackSignal = association.ack_signal;
-		this.ackSignalAvg = association.ack_signal_avg;
-		this.radio = new Radio(radioInfo);
 	}
 
 	/**
@@ -178,7 +232,7 @@ public class AggregatedState {
 	 */
 	public boolean matchesForAggregation(AggregatedState state) {
 		return bssid == state.bssid && station == state.station &&
-			Objects.equals(radio, state.radio);
+			Objects.equals(radioConfig, state.radioConfig);
 	}
 
 	/**
@@ -191,9 +245,7 @@ public class AggregatedState {
 	 */
 	public boolean add(AggregatedState state) {
 		if (matchesForAggregation(state)) {
-			this.rssi.addAll(state.rssi);
+			associationInfoList.addAll(state.associationInfoList);
-			this.rxRate.add(state.rxRate);
-			this.txRate.add(state.txRate);
 			return true;
 		}
 		return false;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/IEUtils.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+/**
+ * Utility functions for dealing with IEs
+ */
+public abstract class IEUtils {
+	/**
+	 * Try to get a json object as a byte
+	 *
+	 * @param contents the JSON object to try to parse
+	 * @param fieldName the field name
+	 * @return the field as a byte or null
+	 */
+	public static Byte parseOptionalByteField(
+		JsonObject contents,
+		String fieldName
+	) {
+		JsonElement element = contents.get(fieldName);
+		if (element == null) {
+			return null;
+		}
+		return element.getAsByte();
+	}
+
+	/**
+	 * Try to get a json object as a short
+	 *
+	 * @param contents the JSON object to try to parse
+	 * @param fieldName the field name
+	 * @return the field as a short or null
+	 */
+	public static Short parseOptionalShortField(
+		JsonObject contents,
+		String fieldName
+	) {
+		JsonElement element = contents.get(fieldName);
+		if (element == null) {
+			return null;
+		}
+		return element.getAsShort();
+	}
+
+	/**
+	 * Try to get a json object as a int
+	 *
+	 * @param contents the JSON object to try to parse
+	 * @param fieldName the field name
+	 * @return the field as a int or null
+	 */
+	public static Integer parseOptionalIntField(
+		JsonObject contents,
+		String fieldName
+	) {
+		JsonElement element = contents.get(fieldName);
+		if (element == null) {
+			return null;
+		}
+		return element.getAsInt();
+	}
+
+	/**
+	 * Try to get a json object as a int
+	 *
+	 * @param contents the JSON object to try to parse
+	 * @param fieldName the field name
+	 * @return the field as a int (0 if key not present)
+	 */
+	public static Integer parseIntField(
+		JsonObject contents,
+		String fieldName
+	) {
+		JsonElement element = contents.get(fieldName);
+		if (element == null) {
+			return 0;
+		}
+		return element.getAsInt();
+	}
+
+	/**
+	 * Try to get a json object as a string
+	 *
+	 * @param contents the JSON object to try to parse
+	 * @param fieldName the field name
+	 * @return the field as a string or null
+	 */
+	public static String parseOptionalStringField(
+		JsonObject contents,
+		String fieldName
+	) {
+		JsonElement element = contents.get(fieldName);
+		if (element == null) {
+			return null;
+		}
+		return element.getAsString();
+	}
+
+	/**
+	 * Try to get a json object as a boolean when represented as a number (0, 1)
+	 *
+	 * @param contents the JSON object to try to parse
+	 * @param fieldName the field name
+	 * @return the field as a boolean (false if key not present)
+	 */
+	public static boolean parseBooleanNumberField(
+		JsonObject contents,
+		String fieldName
+	) {
+		JsonElement element = contents.get(fieldName);
+		if (element == null) {
+			return false;
+		}
+		return element.getAsInt() > 0;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/InformationElements.java

@@ -13,38 +13,42 @@ import java.util.Objects;
 import com.facebook.openwifi.cloudsdk.ies.Country;
 import com.facebook.openwifi.cloudsdk.ies.LocalPowerConstraint;
 import com.facebook.openwifi.cloudsdk.ies.QbssLoad;
+import com.facebook.openwifi.cloudsdk.ies.RMEnabledCapabilities;
 import com.facebook.openwifi.cloudsdk.ies.TxPwrInfo;
 
 /** Wrapper class containing information elements */
 public final class InformationElements {
-
 	public Country country;
 	public QbssLoad qbssLoad;
 	public LocalPowerConstraint localPowerConstraint;
 	public TxPwrInfo txPwrInfo;
+	public RMEnabledCapabilities rmEnabledCapabilities;
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(country, localPowerConstraint, qbssLoad, txPwrInfo);
+		return Objects.hash(
+			country,
+			localPowerConstraint,
+			qbssLoad,
+			rmEnabledCapabilities,
+			txPwrInfo
+		);
 	}
 
 	@Override
 	public boolean equals(Object obj) {
-		if (this == obj) {
+		if (this == obj)
 			return true;
-		}
+		if (obj == null)
-		if (obj == null) {
 			return false;
-		}
+		if (getClass() != obj.getClass())
-		if (getClass() != obj.getClass()) {
 			return false;
-		}
 		InformationElements other = (InformationElements) obj;
-		return Objects.equals(country, other.country) && Objects.equals(
+		return Objects.equals(country, other.country) &&
-			localPowerConstraint,
+			Objects.equals(localPowerConstraint, other.localPowerConstraint) &&
-			other.localPowerConstraint
+			Objects.equals(qbssLoad, other.qbssLoad) &&
-		) && Objects.equals(qbssLoad, other.qbssLoad) &&
+			Objects
+				.equals(rmEnabledCapabilities, other.rmEnabledCapabilities) &&
 			Objects.equals(txPwrInfo, other.txPwrInfo);
 	}
-
 }

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/StateInfo.java

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk;
+
+import com.facebook.openwifi.cloudsdk.models.ap.State;
+
+public class StateInfo extends State {
+	/**
+	 * Unix time in milliseconds (ms). This is added it because State.unit.localtime is an unknown
+	 * time reference.
+	 */
+	public long timestamp;
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/UCentralApConfiguration.java

@@ -8,13 +8,18 @@
 
 package com.facebook.openwifi.cloudsdk;
 
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Set;
 
+import com.facebook.openwifi.cloudsdk.models.ap.UCentralSchema;
 import com.google.gson.Gson;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
+import com.google.gson.reflect.TypeToken;
 
 /**
  * Wrapper around uCentral AP configuration.
@@ -51,33 +56,33 @@ public class UCentralApConfiguration {
 		return config.getAsJsonArray("radios").size();
 	}
 
-	/** Return all info in the radio config (or an empty array if none). */
+	/** Return all info in the radio config (or an empty list if none). */
-	public JsonArray getRadioConfigList() {
+	public List<UCentralSchema.Radio> getRadioConfigList() {
-		if (!config.has("radios") || !config.get("radios").isJsonArray()) {
+		if (config.has("radios") && config.get("radios").isJsonArray()) {
-			return new JsonArray();
+			List<UCentralSchema.Radio> radios = new Gson().fromJson(
+				config.getAsJsonArray("radios"),
+				new TypeToken<ArrayList<UCentralSchema.Radio>>() {}.getType()
+			);
+			if (radios != null) {
+				return radios;
+			}
 		}
-		return config.getAsJsonArray("radios");
+		return Collections.emptyList();
 	}
 
 	/** Return all the operational bands of an AP (from the radio config) */
-	public Set<String> getRadioBandsSet(JsonArray radioConfigList) {
+	public Set<String> getRadioBandsSet(
+		List<UCentralSchema.Radio> radioConfigList
+	) {
 		Set<String> radioBandsSet = new HashSet<>();
 		if (radioConfigList == null) {
 			return radioBandsSet;
 		}
-		for (
+		for (UCentralSchema.Radio radio : radioConfigList) {
-			int radioIndex = 0; radioIndex < radioConfigList.size();
+			if (radio == null || radio.band == null) {
-			radioIndex++
-		) {
-			JsonElement e = radioConfigList.get(radioIndex);
-			if (!e.isJsonObject()) {
 				continue;
 			}
-			JsonObject radioObject = e.getAsJsonObject();
+			radioBandsSet.add(radio.band);
-			if (!radioObject.has("band")) {
-				continue;
-			}
-			radioBandsSet.add(radioObject.get("band").getAsString());
 		}
 		return radioBandsSet;
 	}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/UCentralClient.java

@@ -25,6 +25,7 @@ import com.facebook.openwifi.cloudsdk.models.gw.DeviceCapabilities;
 import com.facebook.openwifi.cloudsdk.models.gw.DeviceConfigureRequest;
 import com.facebook.openwifi.cloudsdk.models.gw.DeviceListWithStatus;
 import com.facebook.openwifi.cloudsdk.models.gw.DeviceWithStatus;
+import com.facebook.openwifi.cloudsdk.models.gw.ScriptRequest;
 import com.facebook.openwifi.cloudsdk.models.gw.ServiceEvent;
 import com.facebook.openwifi.cloudsdk.models.gw.StatisticsRecords;
 import com.facebook.openwifi.cloudsdk.models.gw.SystemInfoResults;
@@ -562,6 +563,71 @@ public class UCentralClient {
 		}
 	}
 
+	/**
+	 * Run a shell script on a device and return the result, or null upon error.
+	 *
+	 * @see #runScript(String, String, int)
+	 */
+	public CommandInfo runScript(String serialNumber, String script) {
+		return runScript(serialNumber, script, 30);
+	}
+
+	/**
+	 * Run a shell script on a device and return the result, or null upon error.
+	 *
+	 * @see #runScript(String, String, int, String)
+	 */
+	public CommandInfo runScript(
+		String serialNumber,
+		String script,
+		int timeoutSec
+	) {
+		return runScript(serialNumber, script, timeoutSec, "shell");
+	}
+
+	/**
+	 * Run a script on a device and return the result, or null upon error.
+	 *
+	 * @param serialNumber the device
+	 * @param script the script contents
+	 * @param timeoutSec the timeout in seconds
+	 * @param type the script type (either "shell" or "ucode")
+	 *
+	 * @see UCentralUtils#getScriptOutput(CommandInfo)
+	 */
+	public CommandInfo runScript(
+		String serialNumber,
+		String script,
+		int timeoutSec,
+		String type
+	) {
+		ScriptRequest req = new ScriptRequest();
+		req.serialNumber = serialNumber;
+		req.timeout = timeoutSec;
+		req.type = type;
+		req.script = script;
+		req.scriptId = "1"; // ??
+		HttpResponse<String> response = httpPost(
+			String.format("device/%s/script", serialNumber),
+			OWGW_SERVICE,
+			req
+		);
+		if (!response.isSuccess()) {
+			logger.error("Error: {}", response.getBody());
+			return null;
+		}
+		try {
+			return gson.fromJson(response.getBody(), CommandInfo.class);
+		} catch (JsonSyntaxException e) {
+			String errMsg = String.format(
+				"Failed to deserialize to CommandInfo: %s",
+				response.getBody()
+			);
+			logger.error(errMsg, e);
+			return null;
+		}
+	}
+
 	/** Retrieve a list of inventory from owprov. */
 	public InventoryTagList getProvInventory() {
 		HttpResponse<String> response = httpGet("inventory", OWPROV_SERVICE);
@@ -624,6 +690,19 @@ public class UCentralClient {
 		try {
 			return gson.fromJson(response.getBody(), RRMDetails.class);
 		} catch (JsonSyntaxException e) {
+			// catch strings like "no", "inherit", "invalid" (???)
+			JSONObject respBody;
+			try {
+				respBody = new JSONObject(response.getBody());
+				respBody.getString("rrm");
+				logger.error(
+					"RRMDetails returned unexpected string body: {}",
+					respBody
+				);
+				return null;
+			} catch (JSONException e2) { /* ignore and fall through */}
+
+			// otherwise, log as a deserialization error
 			String errMsg = String.format(
 				"Failed to deserialize to RRMDetails: %s",
 				response.getBody()

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/UCentralUtils.java

@@ -8,8 +8,10 @@
 
 package com.facebook.openwifi.cloudsdk;
 
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Base64;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -17,16 +19,21 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
+import java.util.zip.DataFormatException;
+import java.util.zip.Inflater;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
 import com.facebook.openwifi.cloudsdk.ies.Country;
 import com.facebook.openwifi.cloudsdk.ies.LocalPowerConstraint;
 import com.facebook.openwifi.cloudsdk.ies.QbssLoad;
+import com.facebook.openwifi.cloudsdk.ies.RMEnabledCapabilities;
 import com.facebook.openwifi.cloudsdk.ies.TxPwrInfo;
+import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
 import com.facebook.openwifi.cloudsdk.models.ap.State;
+import com.facebook.openwifi.cloudsdk.models.ap.UCentralSchema;
+import com.facebook.openwifi.cloudsdk.models.gw.CommandInfo;
 import com.google.gson.Gson;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
@@ -167,6 +174,10 @@ public class UCentralUtils {
 				case TxPwrInfo.TYPE:
 					ieContainer.txPwrInfo = TxPwrInfo.parse(contents);
 					break;
+				case RMEnabledCapabilities.TYPE:
+					ieContainer.rmEnabledCapabilities =
+						RMEnabledCapabilities.parse(contents);
+					break;
 				}
 			} catch (Exception e) {
 				logger.error(String.format("Skipping invalid IE %s", ie), e);
@@ -269,28 +280,20 @@ public class UCentralUtils {
 	 * Returns the results map
 	 */
 	public static Map<String, List<String>> getBandsMap(
-		Map<String, JsonArray> deviceStatus
+		Map<String, List<UCentralSchema.Radio>> deviceStatus
 	) {
 		Map<String, List<String>> bandsMap = new HashMap<>();
-
+		for (
-		for (String serialNumber : deviceStatus.keySet()) {
+			Map.Entry<String, List<UCentralSchema.Radio>> entry : deviceStatus
-			JsonArray radioList =
+				.entrySet()
-				deviceStatus.get(serialNumber).getAsJsonArray();
+		) {
-			for (
+			String serialNumber = entry.getKey();
-				int radioIndex = 0; radioIndex < radioList.size(); radioIndex++
+			for (UCentralSchema.Radio radio : entry.getValue()) {
-			) {
-				JsonElement e = radioList.get(radioIndex);
-				if (!e.isJsonObject()) {
-					return null;
-				}
-				JsonObject radioObject = e.getAsJsonObject();
-				String band = radioObject.get("band").getAsString();
 				bandsMap
-					.computeIfAbsent(band, k -> new ArrayList<>())
+					.computeIfAbsent(radio.band, k -> new ArrayList<>())
 					.add(serialNumber);
 			}
 		}
-
 		return bandsMap;
 	}
 
@@ -304,32 +307,25 @@ public class UCentralUtils {
 	 * @return the results map of {band, {device, list of available channels}}
 	 */
 	public static Map<String, Map<String, List<Integer>>> getDeviceAvailableChannels(
-		Map<String, JsonArray> deviceStatus,
+		Map<String, List<UCentralSchema.Radio>> deviceStatus,
 		Map<String, Map<String, Capabilities.Phy>> deviceCapabilities,
 		Map<String, List<Integer>> defaultAvailableChannels
 	) {
 		Map<String, Map<String, List<Integer>>> deviceAvailableChannels =
 			new HashMap<>();
 
-		for (String serialNumber : deviceStatus.keySet()) {
+		for (
-			JsonArray radioList =
+			Map.Entry<String, List<UCentralSchema.Radio>> entry : deviceStatus
-				deviceStatus.get(serialNumber).getAsJsonArray();
+				.entrySet()
-			for (
+		) {
-				int radioIndex = 0; radioIndex < radioList.size(); radioIndex++
+			String serialNumber = entry.getKey();
-			) {
+			for (UCentralSchema.Radio radio : entry.getValue()) {
-				JsonElement e = radioList.get(radioIndex);
-				if (!e.isJsonObject()) {
-					return null;
-				}
-				JsonObject radioObject = e.getAsJsonObject();
-				String band = radioObject.get("band").getAsString();
-
 				Map<String, Capabilities.Phy> capabilitiesPhyMap =
 					deviceCapabilities.get(serialNumber);
 				List<Integer> availableChannels = new ArrayList<>();
 				if (capabilitiesPhyMap == null) {
 					availableChannels
-						.addAll(defaultAvailableChannels.get(band));
+						.addAll(defaultAvailableChannels.get(radio.band));
 				} else {
 					Set<Entry<String, Capabilities.Phy>> entrySet =
 						capabilitiesPhyMap
@@ -337,7 +333,7 @@ public class UCentralUtils {
 					for (Map.Entry<String, Capabilities.Phy> f : entrySet) {
 						Capabilities.Phy phy = f.getValue();
 						String bandInsideObject = phy.band.toString();
-						if (bandInsideObject.equals(band)) {
+						if (bandInsideObject.equals(radio.band)) {
 							// (TODO) Remove the following dfsChannels code block
 							// when the DFS channels are available
 							Set<Integer> dfsChannels = new HashSet<>();
@@ -356,14 +352,16 @@ public class UCentralUtils {
 								}
 							} catch (Exception c) {
 								availableChannels
-									.addAll(defaultAvailableChannels.get(band));
+									.addAll(
+										defaultAvailableChannels.get(radio.band)
+									);
 							}
 						}
 					}
 				}
 
 				deviceAvailableChannels.computeIfAbsent(
-					band,
+					radio.band,
 					k -> new HashMap<>()
 				)
 					.put(
@@ -382,10 +380,10 @@ public class UCentralUtils {
 	 * Returns the results map
 	 */
 	public static Map<String, String> getBssidsMap(
-		Map<String, State> latestState
+		Map<String, ? extends State> latestState
 	) {
 		Map<String, String> bssidMap = new HashMap<>();
-		for (Map.Entry<String, State> e : latestState.entrySet()) {
+		for (Entry<String, ? extends State> e : latestState.entrySet()) {
 			State state = e.getValue();
 			for (
 				int interfaceIndex = 0;
@@ -477,4 +475,116 @@ public class UCentralUtils {
 			return null;
 		}
 	}
+
+	/**
+	 * Return a map of Wi-Fi client (STA) MAC addresses to the Client structure
+	 * found for that interface. This does NOT support clients connected on
+	 * multiple interfaces simultaneously.
+	 */
+	public static Map<String, State.Interface.Client> getWifiClientInfo(
+		State state
+	) {
+		Map<String, State.Interface.Client> ret = new HashMap<>();
+
+		// Aggregate over all interfaces
+		for (State.Interface iface : state.interfaces) {
+			if (iface.ssids == null || iface.clients == null) {
+				continue;
+			}
+
+			// Convert client array to map (for faster lookups)
+			Map<String, State.Interface.Client> ifaceMap = new HashMap<>();
+			for (State.Interface.Client client : iface.clients) {
+				ifaceMap.put(client.mac, client);
+			}
+
+			// Loop over all SSIDs and connected clients
+			for (State.Interface.SSID ssid : iface.ssids) {
+				if (ssid.associations == null) {
+					continue;
+				}
+				for (
+					State.Interface.SSID.Association association : ssid.associations
+				) {
+					State.Interface.Client client =
+						ifaceMap.get(association.station);
+					if (client != null) {
+						ret.put(association.station, client);
+					}
+				}
+			}
+		}
+
+		return ret;
+	}
+
+	/**
+	 * Decompress (inflate) a UTF-8 string using ZLIB.
+	 *
+	 * @param compressed the compressed string
+	 * @param uncompressedSize the uncompressed size (must be known)
+	 */
+	private static String inflate(String compressed, int uncompressedSize)
+		throws DataFormatException {
+		if (compressed == null) {
+			throw new NullPointerException("Null compressed string");
+		}
+		if (uncompressedSize < 0) {
+			throw new IllegalArgumentException("Invalid size");
+		}
+
+		byte[] input = compressed.getBytes(StandardCharsets.UTF_8);
+		byte[] output = new byte[uncompressedSize];
+
+		Inflater inflater = new Inflater();
+		inflater.setInput(input, 0, input.length);
+		inflater.inflate(output);
+		inflater.end();
+
+		return new String(output, StandardCharsets.UTF_8);
+	}
+
+	/**
+	 * Given the result of the "script" API, return the actual script output
+	 * (decoded/decompressed if needed), or null if the script returned an
+	 * error.
+	 *
+	 * @see UCentralClient#runScript(String, String, int, String)
+	 */
+	public static String getScriptOutput(CommandInfo info) {
+		if (info == null || info.results == null) {
+			return null;
+		}
+		if (!info.results.has("status")) {
+			return null;
+		}
+		JsonObject status = info.results.get("status").getAsJsonObject();
+		if (!status.has("error")) {
+			return null;
+		}
+		int errorCode = status.get("error").getAsInt();
+		if (errorCode != 0) {
+			logger.error("Script failed with code {}", errorCode);
+			return null;
+		}
+		if (status.has("result")) {
+			// Raw result
+			return status.get("result").getAsString();
+		} else if (status.has("result_64") && status.has("result_sz")) {
+			// Base64+compressed result
+			// NOTE: untested, not actually implemented on ucentral-client?
+			try {
+				String encoded = status.get("result_64").getAsString();
+				int uncompressedSize = status.get("result_sz").getAsInt();
+				String decoded = new String(
+					Base64.getDecoder().decode(encoded),
+					StandardCharsets.UTF_8
+				);
+				return inflate(decoded, uncompressedSize);
+			} catch (Exception e) {
+				logger.error("Failed to decode or inflate script result", e);
+			}
+		}
+		return null;
+	}
 }

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/BssAcAccessDelay.java

@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.Objects;
+
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called "BSS AC Access Delay" in
+ * 802.11 specs (section 9.4.2.43). Refer to the specification for more details.
+ * Language in javadocs is taken from the specification.
+ */
+public class BssAcAccessDelay {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 68;
+
+	/**
+	 * Subfield that goes into Access Category Access Delay field in BSS AC
+	 * Access Delay. For information on what the values mean, check section
+	 * 9.4.2.43
+	 */
+	public static class AccessCategoryAccessDelay {
+		/**
+		 * Unsigned 8 bits that represents a scaled representation of best effort AC
+		 * access delay
+		 */
+		public final short averageAccessDelayForBestEffort;
+		/**
+		 * Unsigned 8 bits that represents a scaled representation of background AC
+		 * access delay
+		 */
+		public final short averageAccessDelayForBackground;
+		/**
+		 * Unsigned 8 bits that represents a scaled representation of video AC access
+		 * delay
+		 */
+		public final short averageAccessDelayForVideo;
+		/**
+		 * Unsigned 8 bits that represents a scaled representation of voice AC access
+		 * delay
+		 */
+		public final short averageAccessDelayForVoice;
+
+		/** Constructor */
+		public AccessCategoryAccessDelay(
+			short averageAccessDelayForBestEffort,
+			short averageAccessDelayForBackground,
+			short averageAccessDelayForVideo,
+			short averageAccessDelayForVoice
+		) {
+			this.averageAccessDelayForBestEffort =
+				averageAccessDelayForBestEffort;
+			this.averageAccessDelayForBackground =
+				averageAccessDelayForBackground;
+			this.averageAccessDelayForVideo = averageAccessDelayForVideo;
+			this.averageAccessDelayForVoice = averageAccessDelayForVoice;
+		}
+
+		/** Parse AccessCategoryAccessDelay from JSON object */
+		// TODO rename fields as necessary - we don't know how the data format yet
+		public static AccessCategoryAccessDelay parse(JsonObject contents) {
+			return new AccessCategoryAccessDelay(
+				contents.get("Average Access Delay For Best Effort").getAsShort(),
+				contents.get("Average Access Delay For Background").getAsShort(),
+				contents.get("Average Access Delay For Video").getAsShort(),
+				contents.get("Average Access Delay For Voice").getAsShort()
+			);
+		}
+
+		@Override
+		public int hashCode() {
+			return Objects.hash(
+				averageAccessDelayForBestEffort,
+				averageAccessDelayForBestEffort,
+				averageAccessDelayForVideo,
+				averageAccessDelayForVoice
+			);
+		}
+
+		@Override
+		public boolean equals(Object obj) {
+			if (obj == null) {
+				return false;
+			}
+
+			if (this == obj) {
+				return true;
+			}
+
+			if (getClass() != obj.getClass()) {
+				return false;
+			}
+
+			AccessCategoryAccessDelay other = (AccessCategoryAccessDelay) obj;
+			return averageAccessDelayForBestEffort ==
+				other.averageAccessDelayForBestEffort &&
+				averageAccessDelayForBackground ==
+					other.averageAccessDelayForBackground &&
+				averageAccessDelayForVideo ==
+					other.averageAccessDelayForVideo &&
+				averageAccessDelayForVoice == other.averageAccessDelayForVoice;
+		}
+	}
+
+	/** 32 bits - Holds AccessCategoryAccessDelay subfield */
+	public final AccessCategoryAccessDelay accessCategoryAccessDelay;
+
+	/** Constructor */
+	public BssAcAccessDelay(
+		AccessCategoryAccessDelay accessCategoryAccessDelay
+	) {
+		this.accessCategoryAccessDelay = accessCategoryAccessDelay;
+	}
+
+	/** Parse BssAcAccessDelay from JSON object */
+	// TODO rename fields as necessary - we don't know how the data format yet
+	public static BssAcAccessDelay parse(JsonObject contents) {
+		return new BssAcAccessDelay(
+			AccessCategoryAccessDelay.parse(
+				contents.get("AP Average Access Delay").getAsJsonObject()
+			)
+		);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(accessCategoryAccessDelay);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		BssAcAccessDelay other = (BssAcAccessDelay) obj;
+		return accessCategoryAccessDelay == other.accessCategoryAccessDelay;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/BssAvgAccessDelay.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.Objects;
+
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called "BSS Average Access Delay" in
+ * 802.11 specs (section 9.4.2.38). Refer to the specification for more details.
+ * Language in javadocs is taken from the specification.
+ */
+public class BssAvgAccessDelay {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 63;
+
+	/**
+	 * Unsigned 8 bits representing a scaled average medium access delay for all DCF
+	 * and EDCAF frames transmitted, measured from the time it's ready for
+	 * transmission to actual transmission start time.
+	 */
+	public final short apAvgAccessDelay;
+
+	/** Constructor */
+	public BssAvgAccessDelay(short apAvgAccessDelay) {
+		this.apAvgAccessDelay = apAvgAccessDelay;
+	}
+
+	/** Parse BssAvgAccessDelay from JSON object */
+	// TODO modify this method as necessary - since the IE doesn't seem to be
+	// present, we have no idea what the format looks like
+	public static BssAvgAccessDelay parse(JsonObject contents) {
+		return new BssAvgAccessDelay(
+			contents.get("AP Average Access Delay").getAsShort()
+		);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(apAvgAccessDelay);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		BssAvgAccessDelay other = (BssAvgAccessDelay) obj;
+		return apAvgAccessDelay == other.apAvgAccessDelay;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/BssIntolerantChannelReport.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called "20/40
+ * BSS Intolerant Channel Report" in 802.11 specs (section 9.4.2.57). Refer to
+ * the specification for more details. Language in javadocs is taken from the
+ * specification.
+ */
+public class BssIntolerantChannelReport {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 73;
+
+	/**
+	 * Unsigned 8 bits representing the operating class in which the channel list
+	 * is valid
+	 */
+	public final short operatingClass;
+	/** List of unsigned 8 bits, representing the channel numbers */
+	public final List<Short> channelList;
+
+	/** Constructor */
+	public BssIntolerantChannelReport(
+		short operatingClass,
+		List<Short> channelList
+	) {
+		this.operatingClass = operatingClass;
+		this.channelList = Collections.unmodifiableList(channelList);
+	}
+
+	/** Parse BssIntolerantChannelReport from JSON object */
+	// TODO rename fields as necessary - we don't know how the data format yet
+	public static BssIntolerantChannelReport parse(JsonObject contents) {
+		List<Short> channelList = new ArrayList<>();
+		JsonElement channelListJson = contents.get("Channel List");
+		if (channelListJson != null) {
+			for (JsonElement elem : channelListJson.getAsJsonArray()) {
+				channelList.add(elem.getAsShort());
+			}
+		}
+
+		return new BssIntolerantChannelReport(
+			contents.get("Operating Class").getAsShort(),
+			channelList
+		);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(operatingClass, channelList);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		BssIntolerantChannelReport other = (BssIntolerantChannelReport) obj;
+		return operatingClass == other.operatingClass &&
+			channelList.equals(other.channelList);
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/CollocatedInterferenceReport.java

@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.Objects;
+
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called
+ * "Collocated Interference Report" in 802.11 specs (section 9.4.2.84). Refer to
+ * the specification for more details. Language in javadocs is taken from the
+ * specification.
+ */
+public class CollocatedInterferenceReport {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 96;
+
+	public static class InterferenceAccuracyAndIndex {
+		/**
+		 * Unsigned int (4 bits) representing expected accuracy of the estimate of
+		 * interference in dB with 95% confidence interval
+		 */
+		public final byte expectedAccuracy;
+		/**
+		 * Unsigned int (4 bits) indicating the interference index that is unique for
+		 * each type of interference source
+		 */
+		public final byte interferenceIndex;
+
+		/** Constructor */
+		public InterferenceAccuracyAndIndex(
+			byte expectedAccuracy,
+			byte interferenceIndex
+		) {
+			this.expectedAccuracy = expectedAccuracy;
+			this.interferenceIndex = interferenceIndex;
+		}
+
+		/** Parse InterferenceAccuracyAndIndex from JSON object */
+		// TODO modify this method as necessary - since the IE doesn't seem to be
+		// present, we have no idea what the format looks like
+		public static InterferenceAccuracyAndIndex parse(JsonObject contents) {
+			return new InterferenceAccuracyAndIndex(
+				contents.get("Expected Accuracy").getAsByte(),
+				contents.get("Interference Index").getAsByte()
+			);
+		}
+
+		@Override
+		public int hashCode() {
+			return Objects.hash(expectedAccuracy, interferenceIndex);
+		}
+
+		@Override
+		public boolean equals(Object obj) {
+			if (obj == null) {
+				return false;
+			}
+
+			if (this == obj) {
+				return true;
+			}
+
+			if (getClass() != obj.getClass()) {
+				return false;
+			}
+
+			InterferenceAccuracyAndIndex other =
+				(InterferenceAccuracyAndIndex) obj;
+			return expectedAccuracy == other.expectedAccuracy &&
+				interferenceIndex == other.interferenceIndex;
+		}
+	}
+
+	/** Unsigned 8 bits representing when the report is generated */
+	public final short reportPeriod;
+	/**
+	 * signed 8 bits representing the maximum level of the collocated
+	 * interference power in units of dBm over all receive chains averaged over a
+	 * 4 microsecond period during an interference period and across interference
+	 * bandwidth
+	 */
+	public final byte interferenceLevel;
+	/** Subfield for interference level accuracy and index - 8 bits */
+	public final InterferenceAccuracyAndIndex interferenceAccuracyAndIndex;
+	/**
+	 * Unsigned 32 bits representing the interval between two successibe periods
+	 * of interference in microseconds
+	 */
+	public final long interferenceInterval;
+	/**
+	 * Unsigned 32 bits representing the duration of each period of interference in
+	 * microseconds
+	 */
+	public final long interferenceBurstLength;
+	/**
+	 * Unsigned 32 bits contains the least significant 4 octets (i.e., B0–B31) of
+	 * the TSF timer at the start of the interference burst. When either the
+	 * Interference Interval or the Interference Burst Length fields are set to
+	 * 2^32 – 1, this field indicates the average duty cycle
+	 */
+	public final long interferenceStartTimeDutyCycle;
+	/**
+	 * Unsigned 32 bits representing indicates the center frequency of interference
+	 * in units of 5 kHz
+	 */
+	public final long interferenceCenterFrequency;
+	/**
+	 * Unsigned 16 bits representing the bandwidth in units of 5 kHz at the –3 dB
+	 * roll-off point of the interference signal
+	 */
+	public final short interferenceBandwidth;
+
+	/** Constructor */
+	public CollocatedInterferenceReport(
+		short reportPeriod,
+		byte interferenceLevel,
+		InterferenceAccuracyAndIndex interferenceAccuracyAndIndex,
+		long interferenceInterval,
+		long interferenceBurstLength,
+		long interferenceStartTimeDutyCycle,
+		long interferenceCenterFrequency,
+		short interferenceBandwidth
+	) {
+		this.reportPeriod = reportPeriod;
+		this.interferenceLevel = interferenceLevel;
+		this.interferenceAccuracyAndIndex = interferenceAccuracyAndIndex;
+		this.interferenceInterval = interferenceInterval;
+		this.interferenceBurstLength = interferenceBurstLength;
+		this.interferenceStartTimeDutyCycle = interferenceStartTimeDutyCycle;
+		this.interferenceCenterFrequency = interferenceCenterFrequency;
+		this.interferenceBandwidth = interferenceBandwidth;
+	}
+
+	/** Parse CollocatedInterferenceReport from JSON object */
+	// TODO rename fields as necessary - we don't know how the data format yet
+	public static CollocatedInterferenceReport parse(JsonObject contents) {
+		return new CollocatedInterferenceReport(
+			contents.get("Report Period").getAsShort(),
+			contents.get("Intereference Level").getAsByte(),
+			InterferenceAccuracyAndIndex
+				.parse(
+					contents.get("Interference Level Accuracy/Inteference Index").getAsJsonObject()
+				),
+			contents.get("Interference Interval").getAsLong(),
+			contents.get("Interference Burst Length").getAsLong(),
+			contents.get("Interference Start Time/Duty Cycle").getAsLong(),
+			contents.get("Interference Center Frequency").getAsLong(),
+			contents.get("Interference Bandwidth").getAsShort()
+		);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(
+			reportPeriod,
+			interferenceLevel,
+			interferenceAccuracyAndIndex,
+			interferenceInterval,
+			interferenceBurstLength,
+			interferenceStartTimeDutyCycle,
+			interferenceCenterFrequency,
+			interferenceBandwidth
+		);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		CollocatedInterferenceReport other = (CollocatedInterferenceReport) obj;
+		return reportPeriod == other.reportPeriod &&
+			interferenceLevel == other.interferenceLevel &&
+			interferenceAccuracyAndIndex
+				.equals(other.interferenceAccuracyAndIndex) &&
+			interferenceInterval == other.interferenceInterval &&
+			interferenceBurstLength == other.interferenceBurstLength &&
+			interferenceStartTimeDutyCycle ==
+				other.interferenceStartTimeDutyCycle &&
+			interferenceCenterFrequency == other.interferenceCenterFrequency &&
+			interferenceBandwidth == other.interferenceBandwidth;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/Country.java

@@ -18,35 +18,35 @@ import com.google.gson.JsonObject;
 
 /**
  * This information element (IE) appears in wifiscan entries.
- * Refer to the 802.11 specification for more details. Language in
+ * Refer to the 802.11 specification (section 9.4.2.8) for more details.
- * javadocs is taken from the specification.
+ * Language in javadocs is taken from the specification.
  */
 public class Country {
-	/** Defined in 802.11 */
+	/** Defined in 802.11 table 9-92 */
 	public static final int TYPE = 7;
 
 	/** Constraints for a subset of channels in the AP's country */
 	public static class CountryInfo {
 		/**
-		 * The lowest channel number in the CountryInfo.
+		 * 8 bits unsigned - the lowest channel number in the CountryInfo.
 		 */
-		public final int firstChannelNumber;
+		public final short firstChannelNumber;
 		/**
-		 * The maximum power, in dBm, allowed to be transmitted.
+		 * 8 bits unsigned - The maximum power, in dBm, allowed to be transmitted.
 		 */
-		public final int maximumTransmitPowerLevel;
+		public final short maximumTransmitPowerLevel;
 		/**
-		 * Number of channels this CountryInfo applies to. E.g., if First
+		 * 8 bits unsigned - Number of channels this CountryInfo applies to. E.g.,
-		 * Channel Number is 2 and Number of Channels is 4, this CountryInfo
+		 * if First Channel Number is 2 and Number of Channels is 4, this CountryInfo
 		 * describes channels 2, 3, 4, and 5.
 		 */
-		public final int numberOfChannels;
+		public final short numberOfChannels;
 
 		/** Constructor. */
 		public CountryInfo(
-			int firstChannelNumber,
+			short firstChannelNumber,
-			int maximumTransmitPowerLevel,
+			short maximumTransmitPowerLevel,
-			int numberOfChannels
+			short numberOfChannels
 		) {
 			this.firstChannelNumber = firstChannelNumber;
 			this.maximumTransmitPowerLevel = maximumTransmitPowerLevel;
@@ -55,13 +55,13 @@ public class Country {
 
 		/** Parse CountryInfo from the appropriate Json object. */
 		public static CountryInfo parse(JsonObject contents) {
-			final int firstChannelNumber =
+			final short firstChannelNumber =
-				contents.get("First Channel Number").getAsInt();
+				contents.get("First Channel Number").getAsShort();
-			final int maximumTransmitPowerLevel = contents
+			final short maximumTransmitPowerLevel = contents
 				.get("Maximum Transmit Power Level (in dBm)")
-				.getAsInt();
+				.getAsShort();
-			final int numberOfChannels =
+			final short numberOfChannels =
-				contents.get("Number of Channels").getAsInt();
+				contents.get("Number of Channels").getAsShort();
 			return new CountryInfo(
 				firstChannelNumber,
 				maximumTransmitPowerLevel,
@@ -94,15 +94,10 @@ public class Country {
 				maximumTransmitPowerLevel == other.maximumTransmitPowerLevel &&
 				numberOfChannels == other.numberOfChannels;
 		}
-
-		@Override
-		public String toString() {
-			return "CountryInfo [firstChannelNumber=" + firstChannelNumber +
-				", maximumTransmitPowerLevel=" + maximumTransmitPowerLevel +
-				", numberOfChannels=" + numberOfChannels + "]";
-		}
 	}
 
+	/** Country */
+	public final String country;
 	/**
 	 * Each constraint is a CountryInfo describing tx power constraints on
 	 * one or more channels, for the current country.
@@ -110,7 +105,11 @@ public class Country {
 	public final List<CountryInfo> constraints;
 
 	/** Constructor */
-	public Country(List<CountryInfo> countryInfos) {
+	public Country(
+		String country,
+		List<CountryInfo> countryInfos
+	) {
+		this.country = country;
 		this.constraints = Collections.unmodifiableList(countryInfos);
 	}
 
@@ -126,7 +125,10 @@ public class Country {
 				constraints.add(countryInfo);
 			}
 		}
-		return new Country(constraints);
+		return new Country(
+			contents.get("Code").getAsString(),
+			constraints
+		);
 	}
 
 	@Override
@@ -148,9 +150,4 @@ public class Country {
 		Country other = (Country) obj;
 		return Objects.equals(constraints, other.constraints);
 	}
-
-	@Override
-	public String toString() {
-		return "Country [constraints=" + constraints + "]";
-	}
 }

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/HTOperation.java

@@ -15,9 +15,12 @@ import org.apache.commons.codec.binary.Base64;
 
 /**
  * High Throughput (HT) Operation Element, which is potentially present in
- * wifiscan entries. Introduced in 802.11n (2009).
+ * wifiscan entries. Introduced in 802.11n (2009). Refer to the 802.11
+ * specification (section 9.4.2.56)).
  */
 public class HTOperation {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 61;
 
 	/** Channel number of the primary channel. */
 	public final byte primaryChannel;
@@ -263,4 +266,4 @@ public class HTOperation {
 			staChannelWidth == other.staChannelWidth &&
 			stbcBeacon == other.stbcBeacon;
 	}
-}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/LocalPowerConstraint.java

@@ -15,32 +15,31 @@ import com.google.gson.JsonObject;
 /**
  * This information element (IE) appears in wifiscan entries. It is called
  * "Local Power Constraint" in these entries, and just "Power Constraint" in
- * the 802.11 specification. Refer to the specification for more details.
+ * the 802.11 specification (section 9.4.2.13). Refer to the specification for more details.
  * Language in javadocs is taken from the specification.
  */
 public class LocalPowerConstraint {
-
+	/** Defined in 802.11 table 9-92 */
-	/** Defined in 802.11 */
 	public static final int TYPE = 32;
 
 	/**
-	 * Units are dB.
+	 * Unsigned 8 bits - units are dB.
 	 * <p>
 	 * The local maximum transmit power for a channel is defined as the maximum
 	 * transmit power level specified for the channel in the Country IE minus
 	 * this variable for the given channel.
 	 */
-	public final int localPowerConstraint;
+	public final short localPowerConstraint;
 
 	/** Constructor */
-	public LocalPowerConstraint(int localPowerConstraint) {
+	public LocalPowerConstraint(short localPowerConstraint) {
 		this.localPowerConstraint = localPowerConstraint;
 	}
 
 	/** Parse LocalPowerConstraint IE from appropriate Json object. */
 	public static LocalPowerConstraint parse(JsonObject contents) {
-		final int localPowerConstraint =
+		final short localPowerConstraint =
-			contents.get("Local Power Constraint").getAsInt();
+			contents.get("Local Power Constraint").getAsShort();
 		return new LocalPowerConstraint(localPowerConstraint);
 	}
 
@@ -63,10 +62,4 @@ public class LocalPowerConstraint {
 		LocalPowerConstraint other = (LocalPowerConstraint) obj;
 		return localPowerConstraint == other.localPowerConstraint;
 	}
-
-	@Override
-	public String toString() {
-		return "LocalPowerConstraint [localPowerConstraint=" +
-			localPowerConstraint + "]";
-	}
 }

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/NeighborReport.java

@@ -0,0 +1,318 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called
+ * "Neighbor Report" in 802.11 specs (section 9.4.2.36). Refer to the
+ * specification for more details. Language in javadocs is taken from the
+ * specification.
+ */
+public class NeighborReport {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 52;
+
+	/**
+	 * The BSSID Information field can be used to help determine neighbor service
+	 * set transition candidates
+	 */
+	public static class BssidInfo {
+		/**
+		 * The capability subelement containing selected capability information for
+		 * the AP indicated by this BSSID.
+		 */
+		public static class Capabilities {
+			/** dot11SpectrumManagementRequired */
+			public final boolean spectrumManagement;
+			/** dot11QosOptionImplemented */
+			public final boolean qos;
+			/** dot11APSDOptionImplemented */
+			public final boolean apsd;
+			/** dot11RadioMeasurementActivated */
+			public final boolean radioMeasurement;
+
+			/** Constructor */
+			public Capabilities(
+				boolean spectrumManagement,
+				boolean qos,
+				boolean apsd,
+				boolean radioMeasurement
+			) {
+				this.spectrumManagement = spectrumManagement;
+				this.qos = qos;
+				this.apsd = apsd;
+				this.radioMeasurement = radioMeasurement;
+			}
+
+			/** Parse Capabilities from JSON object */
+			// TODO modify this method as necessary - since the IE doesn't seem to be
+			// present, we have no idea what the format looks like
+			public static Capabilities parse(JsonObject contents) {
+				return new Capabilities(
+					contents.get("Spectrum Management").getAsBoolean(),
+					contents.get("QoS").getAsBoolean(),
+					contents.get("APSD").getAsBoolean(),
+					contents.get("Radio Management").getAsBoolean()
+				);
+			}
+
+			@Override
+			public int hashCode() {
+				return Objects
+					.hash(spectrumManagement, qos, apsd, radioMeasurement);
+			}
+
+			@Override
+			public boolean equals(Object obj) {
+				if (obj == null) {
+					return false;
+				}
+
+				if (this == obj) {
+					return true;
+				}
+
+				if (getClass() != obj.getClass()) {
+					return false;
+				}
+
+				Capabilities other = (Capabilities) obj;
+				return spectrumManagement == other.spectrumManagement &&
+					qos == other.qos && apsd == other.apsd &&
+					radioMeasurement == other.radioMeasurement;
+			}
+		}
+
+		/**
+		 * 2 unsigned bits - whether the AP identified by this BSSID is reachable by
+		 * the STA that requested the neighbor report
+		 */
+		public final byte apReachability;
+		/**
+		 * If true, indicates that the AP identified by this BSSID supports the same
+		 * security provisioning as used by the STA in its current association. If the
+		 * bit is false, it indicates either that the AP does not support the same
+		 * security provisioning or that the security information is not available at
+		 * this time.
+		 */
+		public final boolean security;
+		/**
+		 * Indicates the AP indicated by this BSSID has the same authenticator as
+		 * the AP sending the report. If this bit is false, it indicates a distinct
+		 * authenticator or the information is not available.
+		 */
+		public final boolean keyScope;
+		/**
+		 * @see Capabilities
+		 */
+		public final Capabilities capabilities;
+		/**
+		 * Set to true to indicate that the AP represented by this BSSID is including
+		 * an MDE in its Beacon frames and that the contents of that MDE are identical
+		 * to the MDE advertised by the AP sending the report
+		 */
+		public final boolean mobilityDomain;
+		/**
+		 * High throughput or not, if true the contents of the HT Capabilities in the
+		 * Beacon frame should be identical to the HT Capabilities advertised by the
+		 * AP sending the report
+		 */
+		public final boolean highThroughput;
+		/**
+		 * Very High throughput or not, if true the contents of the VHT Capabilities
+		 * in the Beacon frame should be identical to the VHT Capabilities advertised
+		 * by the AP sending the report
+		 */
+		public final boolean veryHighThroughput;
+		/**
+		 * Indicate that the AP represented by this BSSID is an AP that has set the Fine
+		 * Timing Measurement Responder field of the Extended Capabilities element
+		 */
+		public final boolean ftm;
+
+		/** Constructor */
+		public BssidInfo(
+			byte apReachability,
+			boolean security,
+			boolean keyScope,
+			Capabilities capabilities,
+			boolean mobilityDomain,
+			boolean highThroughput,
+			boolean veryHighThroughput,
+			boolean ftm
+		) {
+			this.apReachability = apReachability;
+			this.security = security;
+			this.keyScope = keyScope;
+			this.capabilities = capabilities;
+			this.mobilityDomain = mobilityDomain;
+			this.highThroughput = highThroughput;
+			this.veryHighThroughput = veryHighThroughput;
+			this.ftm = ftm;
+		}
+
+		/** Parse BssidInfo from JSON object */
+		// TODO rename fields as necessary - we don't know how the data format yet
+		public static BssidInfo parse(JsonObject contents) {
+			JsonElement capabilitiesJson = contents.get("capabilities");
+			if (capabilitiesJson == null) {
+				return null;
+			}
+
+			Capabilities capabilities =
+				Capabilities.parse(capabilitiesJson.getAsJsonObject());
+			return new BssidInfo(
+				contents.get("AP Reachability").getAsByte(),
+				contents.get("Security").getAsBoolean(),
+				contents.get("Key Scope").getAsBoolean(),
+				capabilities,
+				contents.get("Mobility Domain").getAsBoolean(),
+				contents.get("High Throughput").getAsBoolean(),
+				contents.get("Very High Throughput").getAsBoolean(),
+				contents.get("FTM").getAsBoolean()
+			);
+		}
+
+		@Override
+		public int hashCode() {
+			return Objects.hash(
+				apReachability,
+				security,
+				keyScope,
+				mobilityDomain,
+				highThroughput,
+				veryHighThroughput,
+				ftm
+			);
+		}
+
+		@Override
+		public boolean equals(Object obj) {
+			if (obj == null) {
+				return false;
+			}
+
+			if (this == obj) {
+				return true;
+			}
+
+			if (getClass() != obj.getClass()) {
+				return false;
+			}
+
+			BssidInfo other = (BssidInfo) obj;
+			return apReachability == other.apReachability &&
+				security == other.security && keyScope == other.keyScope &&
+				capabilities == other.capabilities &&
+				mobilityDomain == other.mobilityDomain &&
+				highThroughput == other.highThroughput &&
+				veryHighThroughput == other.veryHighThroughput &&
+				ftm == other.ftm;
+		}
+	}
+
+	/** BSSID */
+	public final String bssid;
+	/**
+	 * @see BssidInfo
+	 */
+	public final BssidInfo bssidInfo;
+	/**
+	 * Unsigned 8 bits - indicates the channel set of the AP indicated by this BSSID
+	 */
+	public final short operatingClass;
+	/**
+	 * Unsigned 8 bits - channel number
+	 */
+	public final short channelNumber;
+	/**
+	 * Unsigned 8 bits - PHY type
+	 */
+	public final short phyType;
+	// TODO do we want to support the subelements?
+	/**
+	 * Optional subelements
+	 */
+	public final List<JsonObject> subelements;
+
+	/** Constructor */
+	public NeighborReport(
+		String bssid,
+		BssidInfo bssidInfo,
+		short operatingClass,
+		short channelNumber,
+		short phyType,
+		List<JsonObject> subelements
+	) {
+		this.bssid = bssid;
+		this.bssidInfo = bssidInfo;
+		this.operatingClass = operatingClass;
+		this.channelNumber = channelNumber;
+		this.phyType = phyType;
+		this.subelements = Collections.unmodifiableList(subelements);
+	}
+
+	/** Parse NeighborReport from JSON object */
+	// TODO modify this method as necessary - since the IE doesn't seem to be
+	// present, we have no idea what the format looks like
+	public static NeighborReport parse(JsonObject contents) {
+		List<JsonObject> subelements = null;
+		JsonElement subelementsObj = contents.get("Subelements");
+		if (subelementsObj != null) {
+			subelements = new ArrayList<JsonObject>();
+			for (JsonElement elem : subelementsObj.getAsJsonArray()) {
+				subelements.add(elem.getAsJsonObject());
+			}
+		}
+
+		return new NeighborReport(
+			contents.get("BSSID").getAsString(),
+			BssidInfo.parse(contents.get("BSSID Info").getAsJsonObject()),
+			contents.get("Operating Class").getAsShort(),
+			contents.get("Channel Number").getAsShort(),
+			contents.get("Phy Type").getAsShort(),
+			subelements
+		);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects
+			.hash(bssid, bssidInfo, operatingClass, channelNumber, phyType);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		NeighborReport other = (NeighborReport) obj;
+		return bssid == other.bssid && bssidInfo == other.bssidInfo &&
+			operatingClass == other.operatingClass &&
+			channelNumber == other.channelNumber && phyType == other.phyType;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/PowerCapability.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.Objects;
+
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called "Power
+ * Capability" in 802.11 specs (section 9.4.2.14). Refer to the specification
+ * for more details. Language in javadocs is taken from the specification.
+ */
+public class PowerCapability {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 33;
+
+	/**
+	 * Signed 8 bits units of dB relative to 1mW - nominal minimum transmit power
+	 * with which the STA is capable of transmitting in the current channel, with a
+	 * tolerance ± 5 dB.
+	 */
+	public final byte minimumTxPowerCapability;
+	/**
+	 * Signed 8 bits units of dB relative to 1mW - nominal maximum transmit power
+	 * with which the STA is capable of transmitting in the current channel, with a
+	 * tolerance ± 5 dB.
+	 */
+	public final byte maximumTxPowerCapability;
+
+	/** Constructor */
+	public PowerCapability(
+		byte minimumTxPowerCapability,
+		byte maximumTxPowerCapability
+	) {
+		this.minimumTxPowerCapability = minimumTxPowerCapability;
+		this.maximumTxPowerCapability = maximumTxPowerCapability;
+	}
+
+	/** Parse PowerCapability from JSON object */
+	// TODO modify this method as necessary - since the IE doesn't seem to be
+	// present, we have no idea what the format looks like
+	public static PowerCapability parse(JsonObject contents) {
+		return new PowerCapability(
+			contents.get("Minimum Tx Power Capability").getAsByte(),
+			contents.get("Maximum Tx Power Capability").getAsByte()
+		);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(minimumTxPowerCapability, maximumTxPowerCapability);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		PowerCapability other = (PowerCapability) obj;
+		return minimumTxPowerCapability == other.minimumTxPowerCapability &&
+			maximumTxPowerCapability == other.maximumTxPowerCapability;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/QbssLoad.java

@@ -15,22 +15,21 @@ import com.google.gson.JsonObject;
 
 /**
  * This information element (IE) appears in wifiscan entries. It is called
- * "QBSS Load" in these entries, and just "BSS Load" in the 802.11
+ * "QBSS Load" in these entries, and just "BSS Load" in the 802.11 specification
- * specification. Refer to the specification for more details. Language in
+ * (section 9.4.2.27). Refer to the specification for more details. Language in
  * javadocs is taken from the specification.
  */
 public class QbssLoad {
-
+	/** Defined in 802.11 table 9-92 */
-	/** Defined in 802.11 */
 	public static final int TYPE = 11;
 
 	/**
-	 * The total number of STAs currently associated with the BSS.
+	 * Unsigned 16 bits - The total number of STAs currently associated with the BSS.
 	 */
-	public final int stationCount;
+	public final short stationCount;
 	/**
-	 * The Channel Utilization field is defined as the percentage of time,
+	 * Unsigned 8 bits - The Channel Utilization field is defined as the percentage
-	 * linearly scaled with 255 representing 100%, that the AP sensed the
+	 * of time, linearly scaled with 255 representing 100%, that the AP sensed the
 	 * medium was busy, as indicated by either the physical or virtual carrier
 	 * sense (CS) mechanism. When more than one channel is in use for the BSS,
 	 * the Channel Utilization field value is calculated only for the primary
@@ -40,22 +39,22 @@ public class QbssLoad {
 	 * 		(dot11ChannelUtilizationBeaconIntervals * dot11BeaconPeriod * 1024)
 	 * )
 	 */
-	public final int channelUtilization;
+	public final short channelUtilization;
 	/**
-	 * The Available Admission Capacity field contains an unsigned integer that
+	 * Unsigned 16 bits - The Available Admission Capacity field contains an
-	 * specifies the remaining amount of medium time available via explicit
+	 * unsigned integer that specifies the remaining amount of medium time
-	 * admission control, in units of 32 miscrosecond/second. The field is
+	 * available via explicit admission control, in units of 32
-	 * helpful for roaming STAs to select an AP that is likely to accept future
+	 * miscrosecond/second. The field is helpful for roaming STAs to select an AP
-	 * admission control requests, but it does not represent an assurance that
+	 * that is likely to accept future admission control requests, but it does not
-	 * the HC admits these requests.
+	 * represent an assurance that the HC admits these requests.
 	 */
-	public final int availableAdmissionCapacity;
+	public final short availableAdmissionCapacity;
 
 	/** Constructor */
 	public QbssLoad(
-		int stationCount,
+		short stationCount,
-		int channelUtilization,
+		short channelUtilization,
-		int availableAdmissionCapacity
+		short availableAdmissionCapacity
 	) {
 		this.stationCount = stationCount;
 		this.channelUtilization = channelUtilization;
@@ -70,11 +69,11 @@ public class QbssLoad {
 			return null;
 		}
 		contents = ccaContentJsonElement.getAsJsonObject();
-		final int stationCount = contents.get("Station Count").getAsInt();
+		final short stationCount = contents.get("Station Count").getAsShort();
-		final int channelUtilization =
+		final short channelUtilization =
-			contents.get("Channel Utilization").getAsInt();
+			contents.get("Channel Utilization").getAsShort();
-		final int availableAdmissionCapacity =
+		final short availableAdmissionCapacity =
-			contents.get("Available Admission Capabilities").getAsInt();
+			contents.get("Available Admission Capabilities").getAsShort();
 		return new QbssLoad(
 			stationCount,
 			channelUtilization,
@@ -107,11 +106,4 @@ public class QbssLoad {
 			channelUtilization == other.channelUtilization &&
 			stationCount == other.stationCount;
 	}
-
-	@Override
-	public String toString() {
-		return "QbssLoad [stationCount=" + stationCount +
-			", channelUtilization=" + channelUtilization +
-			", availableAdmissionCapacity=" + availableAdmissionCapacity + "]";
-	}
 }

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/RCPI.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.Objects;
+
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called "RCPI"
+ * in 802.11 specs (section 9.4.2.37). Refer to the specification for more
+ * details. Language in javadocs is taken from the specification.
+ */
+public class RCPI {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 53;
+
+	/**
+	 * Unsigned 8 bits - indication of the received RF power in the selected
+	 * channel for a received frame
+	 */
+	public final short rcpi;
+
+	/** Constructor */
+	public RCPI(short rcpi) {
+		this.rcpi = rcpi;
+	}
+
+	/** Parse RCPI from JSON object */
+	// TODO modify this method as necessary - since the IE doesn't seem to be
+	// present, we have no idea what the format looks like
+	public static RCPI parse(JsonObject contents) {
+		return new RCPI(
+			contents.get("RCPI").getAsShort()
+		);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(rcpi);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		RCPI other = (RCPI) obj;
+		return rcpi == other.rcpi;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/RMEnabledCapabilities.java

@@ -0,0 +1,274 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.Objects;
+
+import com.facebook.openwifi.cloudsdk.IEUtils;
+import com.google.gson.JsonObject;
+
+/**
+ * This information element (IE) appears in wifiscan entries. It's called "RM
+ * Enabled Capabilities" in 802.11 specs (section 9.4.2.45). Refer to the
+ * specification for more details. Language in javadocs is taken from the
+ * specification.
+ */
+public class RMEnabledCapabilities {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 70;
+
+	// Bit fields
+	// @formatter:off
+	public final boolean linkMeasurementCapabilityEnabled;
+	public final boolean neighborReportCapabilityEnabled;
+	public final boolean parallelMeasurementsCapabilityEnabled;
+	public final boolean repeatedMeasurementsCapabilityEnabled;
+	public final boolean beaconPassiveMeasurementCapabilityEnabled;
+	public final boolean beaconActiveMeasurementCapabilityEnabled;
+	public final boolean beaconTableMeasurementCapabilityEnabled;
+	public final boolean beaconMeasurementReportingConditionsCapabilityEnabled;
+	public final boolean frameMeasurementCapabilityEnabled;
+	public final boolean channelLoadMeasurementCapabilityEnabled;
+	public final boolean noiseHistogramMeasurementCapabilityEnabled;
+	public final boolean statisticsMeasurementCapabilityEnabled;
+	public final boolean lciMeasurementCapabilityEnabled;
+	public final boolean lciAzimuthCapabilityEnabled;
+	public final boolean transmitStreamCategoryMeasurementCapabilityEnabled;
+	public final boolean triggeredTransmitStreamCategoryMeasurementCapabilityEnabled;
+	public final boolean apChannelReportCapabilityEnabled;
+	public final boolean rmMibCapabilityEnabled;
+	public final int operatingChannelMaxMeasurementDuration;
+	public final int nonoperatingChannelMaxMeasurementDuration;
+	public final int measurementPilotCapability;
+	public final boolean measurementPilotTransmissionInformationCapabilityEnabled;
+	public final boolean neighborReportTsfOffsetCapabilityEnabled;
+	public final boolean rcpiMeasurementCapabilityEnabled;
+	public final boolean rsniMeasurementCapabilityEnabled;
+	public final boolean bssAverageAccessDelayCapabilityEnabled;
+	public final boolean bssAvailableAdmissionCapacityCapabilityEnabled;
+	public final boolean antennaCapabilityEnabled;
+	public final boolean ftmRangeReportCapabilityEnabled;
+	public final boolean civicLocationMeasurementCapabilityEnabled;
+	// @formatter:on
+
+	/** Constructor */
+	public RMEnabledCapabilities(
+		boolean linkMeasurementCapabilityEnabled,
+		boolean neighborReportCapabilityEnabled,
+		boolean parallelMeasurementsCapabilityEnabled,
+		boolean repeatedMeasurementsCapabilityEnabled,
+		boolean beaconPassiveMeasurementCapabilityEnabled,
+		boolean beaconActiveMeasurementCapabilityEnabled,
+		boolean beaconTableMeasurementCapabilityEnabled,
+		boolean beaconMeasurementReportingConditionsCapabilityEnabled,
+		boolean frameMeasurementCapabilityEnabled,
+		boolean channelLoadMeasurementCapabilityEnabled,
+		boolean noiseHistogramMeasurementCapabilityEnabled,
+		boolean statisticsMeasurementCapabilityEnabled,
+		boolean lciMeasurementCapabilityEnabled,
+		boolean lciAzimuthCapabilityEnabled,
+		boolean transmitStreamCategoryMeasurementCapabilityEnabled,
+		boolean triggeredTransmitStreamCategoryMeasurementCapabilityEnabled,
+		boolean apChannelReportCapabilityEnabled,
+		boolean rmMibCapabilityEnabled,
+		int operatingChannelMaxMeasurementDuration,
+		int nonoperatingChannelMaxMeasurementDuration,
+		int measurementPilotCapability,
+		boolean measurementPilotTransmissionInformationCapabilityEnabled,
+		boolean neighborReportTsfOffsetCapabilityEnabled,
+		boolean rcpiMeasurementCapabilityEnabled,
+		boolean rsniMeasurementCapabilityEnabled,
+		boolean bssAverageAccessDelayCapabilityEnabled,
+		boolean bssAvailableAdmissionCapacityCapabilityEnabled,
+		boolean antennaCapabilityEnabled,
+		boolean ftmRangeReportCapabilityEnabled,
+		boolean civicLocationMeasurementCapabilityEnabled
+	) {
+		// @formatter:off
+		this.linkMeasurementCapabilityEnabled = linkMeasurementCapabilityEnabled;
+		this.neighborReportCapabilityEnabled = neighborReportCapabilityEnabled;
+		this.parallelMeasurementsCapabilityEnabled = parallelMeasurementsCapabilityEnabled;
+		this.repeatedMeasurementsCapabilityEnabled = repeatedMeasurementsCapabilityEnabled;
+		this.beaconPassiveMeasurementCapabilityEnabled = beaconPassiveMeasurementCapabilityEnabled;
+		this.beaconActiveMeasurementCapabilityEnabled = beaconActiveMeasurementCapabilityEnabled;
+		this.beaconTableMeasurementCapabilityEnabled = beaconTableMeasurementCapabilityEnabled;
+		this.beaconMeasurementReportingConditionsCapabilityEnabled = beaconMeasurementReportingConditionsCapabilityEnabled;
+		this.frameMeasurementCapabilityEnabled = frameMeasurementCapabilityEnabled;
+		this.channelLoadMeasurementCapabilityEnabled = channelLoadMeasurementCapabilityEnabled;
+		this.noiseHistogramMeasurementCapabilityEnabled = noiseHistogramMeasurementCapabilityEnabled;
+		this.statisticsMeasurementCapabilityEnabled = statisticsMeasurementCapabilityEnabled;
+		this.lciMeasurementCapabilityEnabled = lciMeasurementCapabilityEnabled;
+		this.lciAzimuthCapabilityEnabled = lciAzimuthCapabilityEnabled;
+		this.transmitStreamCategoryMeasurementCapabilityEnabled = transmitStreamCategoryMeasurementCapabilityEnabled;
+		this.triggeredTransmitStreamCategoryMeasurementCapabilityEnabled = triggeredTransmitStreamCategoryMeasurementCapabilityEnabled;
+		this.apChannelReportCapabilityEnabled = apChannelReportCapabilityEnabled;
+		this.rmMibCapabilityEnabled = rmMibCapabilityEnabled;
+		this.operatingChannelMaxMeasurementDuration = operatingChannelMaxMeasurementDuration;
+		this.nonoperatingChannelMaxMeasurementDuration = nonoperatingChannelMaxMeasurementDuration;
+		this.measurementPilotCapability = measurementPilotCapability;
+		this.measurementPilotTransmissionInformationCapabilityEnabled = measurementPilotTransmissionInformationCapabilityEnabled;
+		this.neighborReportTsfOffsetCapabilityEnabled = neighborReportTsfOffsetCapabilityEnabled;
+		this.rcpiMeasurementCapabilityEnabled = rcpiMeasurementCapabilityEnabled;
+		this.rsniMeasurementCapabilityEnabled = rsniMeasurementCapabilityEnabled;
+		this.bssAverageAccessDelayCapabilityEnabled = bssAverageAccessDelayCapabilityEnabled;
+		this.bssAvailableAdmissionCapacityCapabilityEnabled = bssAvailableAdmissionCapacityCapabilityEnabled;
+		this.antennaCapabilityEnabled = antennaCapabilityEnabled;
+		this.ftmRangeReportCapabilityEnabled = ftmRangeReportCapabilityEnabled;
+		this.civicLocationMeasurementCapabilityEnabled = civicLocationMeasurementCapabilityEnabled;
+		// @formatter:on
+	}
+
+	/** Parse RMEnabledCapabilities IE from appropriate Json object. */
+	public static RMEnabledCapabilities parse(JsonObject contents) {
+		JsonObject o = contents.get("RM Capabilities").getAsJsonObject();
+		// @formatter:off
+		return new RMEnabledCapabilities(
+			/* bits 0-17 */
+			IEUtils.parseBooleanNumberField(o, "Link Measurement"),
+			IEUtils.parseBooleanNumberField(o, "Neighbor Report"),
+			IEUtils.parseBooleanNumberField(o, "Parallel Measurements"),
+			IEUtils.parseBooleanNumberField(o, "Repeated Measurements"),
+			IEUtils.parseBooleanNumberField(o, "Beacon Passive Measurement"),
+			IEUtils.parseBooleanNumberField(o, "Beacon Active Measurement"),
+			IEUtils.parseBooleanNumberField(o, "Beacon Table Measurement"),
+			IEUtils.parseBooleanNumberField(o, "Beacon Measurement Reporting Conditions"),
+			IEUtils.parseBooleanNumberField(o, "Frame Measurement"),
+			IEUtils.parseBooleanNumberField(o, "Channel Load Measurement"),
+			IEUtils.parseBooleanNumberField(o, "Noise Histogram Measurement"),
+			IEUtils.parseBooleanNumberField(o, "Statistics Measurement"),
+			IEUtils.parseBooleanNumberField(o, "LCI Measurement"),
+			IEUtils.parseBooleanNumberField(o, "LCI Azimuth capability"),
+			IEUtils.parseBooleanNumberField(o, "Transmit Stream/Category Measurement"),
+			IEUtils.parseBooleanNumberField(o, "Triggered Transmit Stream/Category Measurement"),
+			IEUtils.parseBooleanNumberField(o, "AP Channel Report capability"),
+			IEUtils.parseBooleanNumberField(o, "RM MIB capability"),
+			/* bits 18-20 */
+			IEUtils.parseIntField(o, "Operating Channel Max Measurement Duration"),
+			/* bits 21-23 */
+			IEUtils.parseIntField(o, "Nonoperating Channel Max Measurement Duration"),
+			/* bits 24-26 */
+			IEUtils.parseIntField(o, "Measurement Pilotcapability"),
+			/* bits 27-35 */
+			false /* TODO "Measurement Pilot Transmission Information Capability" */,
+			IEUtils.parseBooleanNumberField(o, "Neighbor Report TSF Offset"),
+			IEUtils.parseBooleanNumberField(o, "RCPI Measurement capability"),
+			IEUtils.parseBooleanNumberField(o, "RSNI Measurement capability"),
+			IEUtils.parseBooleanNumberField(o, "BSS Average Access Delay capability"),
+			IEUtils.parseBooleanNumberField(o, "BSS Available Admission Capacity capability"),
+			IEUtils.parseBooleanNumberField(o, "Antenna capability"),
+			false /* TODO "FTM Range Report Capability" */,
+			false /* TODO "Civic Location Measurement Capability" */
+			/* bits 36-39 reserved */
+		);
+		// @formatter:on
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(
+			antennaCapabilityEnabled,
+			apChannelReportCapabilityEnabled,
+			beaconActiveMeasurementCapabilityEnabled,
+			beaconMeasurementReportingConditionsCapabilityEnabled,
+			beaconPassiveMeasurementCapabilityEnabled,
+			beaconTableMeasurementCapabilityEnabled,
+			bssAvailableAdmissionCapacityCapabilityEnabled,
+			bssAverageAccessDelayCapabilityEnabled,
+			channelLoadMeasurementCapabilityEnabled,
+			civicLocationMeasurementCapabilityEnabled,
+			frameMeasurementCapabilityEnabled,
+			ftmRangeReportCapabilityEnabled,
+			lciAzimuthCapabilityEnabled,
+			lciMeasurementCapabilityEnabled,
+			linkMeasurementCapabilityEnabled,
+			measurementPilotCapability,
+			measurementPilotTransmissionInformationCapabilityEnabled,
+			neighborReportCapabilityEnabled,
+			neighborReportTsfOffsetCapabilityEnabled,
+			noiseHistogramMeasurementCapabilityEnabled,
+			nonoperatingChannelMaxMeasurementDuration,
+			operatingChannelMaxMeasurementDuration,
+			parallelMeasurementsCapabilityEnabled,
+			rcpiMeasurementCapabilityEnabled,
+			repeatedMeasurementsCapabilityEnabled,
+			rmMibCapabilityEnabled,
+			rsniMeasurementCapabilityEnabled,
+			statisticsMeasurementCapabilityEnabled,
+			transmitStreamCategoryMeasurementCapabilityEnabled,
+			triggeredTransmitStreamCategoryMeasurementCapabilityEnabled
+		);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		RMEnabledCapabilities other = (RMEnabledCapabilities) obj;
+		return antennaCapabilityEnabled == other.antennaCapabilityEnabled &&
+			apChannelReportCapabilityEnabled ==
+				other.apChannelReportCapabilityEnabled &&
+			beaconActiveMeasurementCapabilityEnabled ==
+				other.beaconActiveMeasurementCapabilityEnabled &&
+			beaconMeasurementReportingConditionsCapabilityEnabled ==
+				other.beaconMeasurementReportingConditionsCapabilityEnabled &&
+			beaconPassiveMeasurementCapabilityEnabled ==
+				other.beaconPassiveMeasurementCapabilityEnabled &&
+			beaconTableMeasurementCapabilityEnabled ==
+				other.beaconTableMeasurementCapabilityEnabled &&
+			bssAvailableAdmissionCapacityCapabilityEnabled ==
+				other.bssAvailableAdmissionCapacityCapabilityEnabled &&
+			bssAverageAccessDelayCapabilityEnabled ==
+				other.bssAverageAccessDelayCapabilityEnabled &&
+			channelLoadMeasurementCapabilityEnabled ==
+				other.channelLoadMeasurementCapabilityEnabled &&
+			civicLocationMeasurementCapabilityEnabled ==
+				other.civicLocationMeasurementCapabilityEnabled &&
+			frameMeasurementCapabilityEnabled ==
+				other.frameMeasurementCapabilityEnabled &&
+			ftmRangeReportCapabilityEnabled ==
+				other.ftmRangeReportCapabilityEnabled &&
+			lciAzimuthCapabilityEnabled == other.lciAzimuthCapabilityEnabled &&
+			lciMeasurementCapabilityEnabled ==
+				other.lciMeasurementCapabilityEnabled &&
+			linkMeasurementCapabilityEnabled ==
+				other.linkMeasurementCapabilityEnabled &&
+			measurementPilotCapability == other.measurementPilotCapability &&
+			measurementPilotTransmissionInformationCapabilityEnabled ==
+				other.measurementPilotTransmissionInformationCapabilityEnabled &&
+			neighborReportCapabilityEnabled ==
+				other.neighborReportCapabilityEnabled &&
+			neighborReportTsfOffsetCapabilityEnabled ==
+				other.neighborReportTsfOffsetCapabilityEnabled &&
+			noiseHistogramMeasurementCapabilityEnabled ==
+				other.noiseHistogramMeasurementCapabilityEnabled &&
+			nonoperatingChannelMaxMeasurementDuration ==
+				other.nonoperatingChannelMaxMeasurementDuration &&
+			operatingChannelMaxMeasurementDuration ==
+				other.operatingChannelMaxMeasurementDuration &&
+			parallelMeasurementsCapabilityEnabled ==
+				other.parallelMeasurementsCapabilityEnabled &&
+			rcpiMeasurementCapabilityEnabled ==
+				other.rcpiMeasurementCapabilityEnabled &&
+			repeatedMeasurementsCapabilityEnabled ==
+				other.repeatedMeasurementsCapabilityEnabled &&
+			rmMibCapabilityEnabled == other.rmMibCapabilityEnabled &&
+			rsniMeasurementCapabilityEnabled ==
+				other.rsniMeasurementCapabilityEnabled &&
+			statisticsMeasurementCapabilityEnabled ==
+				other.statisticsMeasurementCapabilityEnabled &&
+			transmitStreamCategoryMeasurementCapabilityEnabled ==
+				other.transmitStreamCategoryMeasurementCapabilityEnabled &&
+			triggeredTransmitStreamCategoryMeasurementCapabilityEnabled ==
+				other.triggeredTransmitStreamCategoryMeasurementCapabilityEnabled;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/ReducedNeighborReport.java

@@ -0,0 +1,313 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+import com.facebook.openwifi.cloudsdk.IEUtils;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called
+ * "Reduced Neighbor Report" in 802.11 specs (section 9.4.2.170). Refer to the
+ * specification for more details. Language in javadocs is taken from the
+ * specification.
+ */
+public class ReducedNeighborReport {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 201;
+
+	/**
+	 * The Neighbor AP Information field specifies TBTT and other information
+	 * related to a group of neighbor APs on one channel.
+	 */
+	public static class NeighborApInformation {
+		/**
+		 * Subfield for TBTT Information header
+		 */
+		public static class TbttInformationHeader {
+			/**
+			 * Unsigned 2 bits -  identifies, together with the TBTT Information Length
+			 * subfield, the format of the TBTT Information field
+			 */
+			public final byte tbttInformationType;
+			/**
+			 * 1 bit - reserved except when the Reduced Neighbor Report element is
+			 * carried in a Probe Response frame transmitted by a TVHT AP
+			 */
+			public final boolean filteredNeighborAp;
+			/**
+			 * Unsigned 4 bits - number of TBTT Information fields included in the TBTT
+			 * Information Set field of the Neighbor AP Information field, minus one
+			 */
+			public final byte tbttInformationCount;
+			/**
+			 * Unsigned 8 bits - the length of each TBTT Information field included in
+			 * the TBTT Information Set field of the Neighbor AP Information field
+			 */
+			public final short tbttInformationLength;
+
+			/** Constructor */
+			public TbttInformationHeader(
+				byte tbttInformationType,
+				boolean filteredNeighborAp,
+				byte tbttInformationCount,
+				short tbttInformationLength
+			) {
+				this.tbttInformationType = tbttInformationType;
+				this.filteredNeighborAp = filteredNeighborAp;
+				this.tbttInformationCount = tbttInformationCount;
+				this.tbttInformationLength = tbttInformationLength;
+			}
+
+			/** Parse TbttInformationHeader from JSON object */
+			// TODO modify this method as necessary - since the IE doesn't seem to be
+			// present, we have no idea what the format looks like
+			public static TbttInformationHeader parse(JsonObject contents) {
+				return new TbttInformationHeader(
+					contents.get("TBTT Information Type").getAsByte(),
+					contents.get("Filtered Neighbor Map").getAsBoolean(),
+					contents.get("TBTT Information Count").getAsByte(),
+					contents.get("TBTT Information Length").getAsShort()
+				);
+			}
+
+			@Override
+			public int hashCode() {
+				return Objects.hash(
+					tbttInformationType,
+					filteredNeighborAp,
+					tbttInformationCount,
+					tbttInformationLength
+				);
+			}
+
+			@Override
+			public boolean equals(Object obj) {
+				if (obj == null) {
+					return false;
+				}
+
+				if (this == obj) {
+					return true;
+				}
+
+				if (getClass() != obj.getClass()) {
+					return false;
+				}
+
+				TbttInformationHeader other = (TbttInformationHeader) obj;
+				return tbttInformationType == other.tbttInformationType &&
+					filteredNeighborAp == other.filteredNeighborAp &&
+					tbttInformationCount == other.tbttInformationCount &&
+					tbttInformationLength == other.tbttInformationLength;
+			}
+		}
+
+		/**
+		 * Subfield for TBTT Information
+		 */
+		public static class TbttInformation {
+			/**
+			 * Unsigned 8 bits - offset in TUs, rounded down to nearest TU, to the next
+			 * TBTT of an AP’s BSS from the immediately prior TBTT of the AP that
+			 * transmits this element
+			 */
+			public final short neighborApTbttOffset;
+			/** BSSID of neighbor, optional */
+			public final String bssid;
+			/** Short SSID of neighbor, optional */
+			public final String shortSsid;
+
+			/** Constructor */
+			public TbttInformation(
+				short neighborApTbttOffset,
+				String bssid,
+				String shortSsid
+			) {
+				this.neighborApTbttOffset = neighborApTbttOffset;
+				this.bssid = bssid;
+				this.shortSsid = shortSsid;
+			}
+
+			/** Parse TbttInformation from JSON object */
+			// TODO modify this method as necessary - since the IE doesn't seem to be
+			// present, we have no idea what the format looks like
+			public static TbttInformation parse(JsonObject contents) {
+				return new TbttInformation(
+					contents.get("Neighbor AP TBTT Offset").getAsShort(),
+					IEUtils.parseOptionalStringField(contents, "BSSID"),
+					IEUtils.parseOptionalStringField(contents, "Short SSID")
+				);
+			}
+
+			@Override
+			public int hashCode() {
+				return Objects.hash(neighborApTbttOffset, bssid, shortSsid);
+			}
+
+			@Override
+			public boolean equals(Object obj) {
+				if (obj == null) {
+					return false;
+				}
+
+				if (this == obj) {
+					return true;
+				}
+
+				if (getClass() != obj.getClass()) {
+					return false;
+				}
+
+				TbttInformation other = (TbttInformation) obj;
+				return neighborApTbttOffset ==
+					other.neighborApTbttOffset && bssid.equals(other.bssid) &&
+					Objects.equals(shortSsid, other.shortSsid);
+			}
+		}
+
+		/**
+		 * @see TbttInformationHeader
+		 */
+		public final TbttInformationHeader tbttInformationHeader;
+		/**
+		 * Unsigned 8 bits - channel starting frequency that, together with the
+		 * Channel Number field, indicates the primary channel of the BSSs of the APs
+		 * in this Neighbor AP Information field
+		 */
+		public final short operatingClass;
+		/**
+		 * Unsigned 8 bits - the last known primary channel of the APs in this
+		 * Neighbor AP Information field.
+		 */
+		public final short channelNumber;
+		/**
+		 * @see TbttInformation
+		 */
+		public final TbttInformation tbttInformation;
+
+		/** Constructor */
+		public NeighborApInformation(
+			TbttInformationHeader tbttInformationHeader,
+			short operatingClass,
+			short channelNumber,
+			TbttInformation tbttInformation
+		) {
+			this.tbttInformationHeader = tbttInformationHeader;
+			this.operatingClass = operatingClass;
+			this.channelNumber = channelNumber;
+			this.tbttInformation = tbttInformation;
+		}
+
+		/** Parse NeighborApInformation from JSON object */
+		// TODO modify this method as necessary - since the IE doesn't seem to be
+		// present, we have no idea what the format looks like
+		public static NeighborApInformation parse(JsonObject contents) {
+			return new NeighborApInformation(
+				TbttInformationHeader.parse(
+					contents.get("TBTT Information Header").getAsJsonObject()
+				),
+				contents.get("Operating Class").getAsShort(),
+				contents.get("Channel Number").getAsShort(),
+				TbttInformation.parse(contents.get("TBTT Information").getAsJsonObject())
+			);
+		}
+
+		@Override
+		public int hashCode() {
+			return Objects.hash(
+				tbttInformationHeader,
+				operatingClass,
+				channelNumber,
+				tbttInformation
+			);
+		}
+
+		@Override
+		public boolean equals(Object obj) {
+			if (obj == null) {
+				return false;
+			}
+
+			if (this == obj) {
+				return true;
+			}
+
+			if (getClass() != obj.getClass()) {
+				return false;
+			}
+
+			NeighborApInformation other = (NeighborApInformation) obj;
+			return tbttInformationHeader.equals(other.tbttInformationHeader) &&
+				operatingClass == other.operatingClass &&
+				channelNumber == other.channelNumber &&
+				Objects.equals(tbttInformation, other.tbttInformation);
+		}
+	}
+
+	/** number of channels in a subband of supported channels */
+	public final List<NeighborApInformation> neighborApInformations;
+
+	/** Constructor */
+	public ReducedNeighborReport(
+		List<NeighborApInformation> neighborApInformations
+	) {
+		this.neighborApInformations =
+			Collections.unmodifiableList(neighborApInformations);
+	}
+
+	/** Parse ReducedNeighborReport from JSON object */
+	// TODO modify this method as necessary - since the IE doesn't seem to be
+	// present, we have no idea what the format looks like
+	public static ReducedNeighborReport parse(JsonObject contents) {
+		List<NeighborApInformation> neighborApInformations = new ArrayList<>();
+
+		JsonElement neighborApInformationsObject =
+			contents.get("Neighbor AP Informations");
+		if (neighborApInformationsObject != null) {
+			for (
+				JsonElement elem : neighborApInformationsObject.getAsJsonArray()
+			) {
+				neighborApInformations
+					.add(NeighborApInformation.parse(elem.getAsJsonObject()));
+			}
+		}
+
+		return new ReducedNeighborReport(neighborApInformations);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(neighborApInformations);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		ReducedNeighborReport other = (ReducedNeighborReport) obj;
+		return neighborApInformations.equals(other.neighborApInformations);
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/SupportedChannels.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.ies;
+
+import java.util.Objects;
+
+import com.google.gson.JsonObject;
+
+// NOTE: Not validated (not seen on test devices)
+/**
+ * This information element (IE) appears in wifiscan entries. It's called
+ * "Supported Channels" in 802.11 specs (section 9.4.2.17). Refer to the
+ * specification for more details. Language in javadocs is taken from the
+ * specification.
+ */
+public class SupportedChannels {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 36;
+
+	/** Unsigned 8 bits - first channel in a subband of supported channels */
+	public final short firstChannelNumber;
+	/** Unsigned 8 bits - number of channels in a subband of supported channels */
+	public final short numberOfChannels;
+
+	/** Constructor */
+	public SupportedChannels(short firstChannelNumber, short numberOfChannels) {
+		this.firstChannelNumber = firstChannelNumber;
+		this.numberOfChannels = numberOfChannels;
+	}
+
+	/** Parse SupportedChannels from JSON object */
+	// TODO modify this method as necessary - since the IE doesn't seem to be
+	// present, we have no idea what the format looks like
+	public static SupportedChannels parse(JsonObject contents) {
+		return new SupportedChannels(
+			contents.get("First Channel Number").getAsShort(),
+			contents.get("Number of Channels").getAsShort()
+		);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(firstChannelNumber, numberOfChannels);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == null) {
+			return false;
+		}
+
+		if (this == obj) {
+			return true;
+		}
+
+		if (getClass() != obj.getClass()) {
+			return false;
+		}
+
+		SupportedChannels other = (SupportedChannels) obj;
+		return firstChannelNumber == other.firstChannelNumber &&
+			numberOfChannels == other.numberOfChannels;
+	}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/TxPwrInfo.java

@@ -10,35 +10,42 @@ package com.facebook.openwifi.cloudsdk.ies;
 
 import java.util.Objects;
 
-import com.google.gson.JsonElement;
+import com.facebook.openwifi.cloudsdk.IEUtils;
 import com.google.gson.JsonObject;
 
 /**
  * This information element (IE) appears in wifiscan entries. It is called
  * "Tx Pwr Info" in these entries, and "Transmit Power Envelope" in the 802.11
- * specification. Refer to the specification for more details. Language in
+ * specification (section 9.4.2.161). Refer to the specification for more details. Language in
  * javadocs is taken from the specification.
  */
 public class TxPwrInfo {
-
+	/** Defined in 802.11 table 9-92 */
-	/** Defined in 802.11 */
 	public static final int TYPE = 195;
 
-	/** Local maximum transmit power for 20 MHz. Required field. */
+	/**
-	public final int localMaxTxPwrConstraint20MHz;
+	 * Unsigned 8 bits - Local maximum transmit power for 20 MHz. Required field.
-	/** Local maximum transmit power for 40 MHz. Optional field. */
+	 */
-	public final Integer localMaxTxPwrConstraint40MHz;
+	public final Short localMaxTxPwrConstraint20MHz;
-	/** Local maximum transmit power for 80 MHz. Optional field. */
+	/**
-	public final Integer localMaxTxPwrConstraint80MHz;
+	 * Unsigned 8 bits - Local maximum transmit power for 40 MHz. Optional field.
-	/** Local maximum transmit power for both 160 MHz and 80+80 MHz. Optional field. */
+	 */
-	public final Integer localMaxTxPwrConstraint160MHz;
+	public final Short localMaxTxPwrConstraint40MHz;
+	/**
+	 * Unsigned 8 bits - Local maximum transmit power for 80 MHz. Optional field.
+	 */
+	public final Short localMaxTxPwrConstraint80MHz;
+	/**
+	 * Unsigned 8 bits - Local maximum transmit power for both 160 MHz and 80+80 MHz. Optional field.
+	 */
+	public final Short localMaxTxPwrConstraint160MHz;
 
 	/** Constructor */
 	public TxPwrInfo(
-		int localMaxTxPwrConstraint20MHz,
+		short localMaxTxPwrConstraint20MHz,
-		Integer localMaxTxPwrConstraint40MHz,
+		Short localMaxTxPwrConstraint40MHz,
-		Integer localMaxTxPwrConstraint80MHz,
+		Short localMaxTxPwrConstraint80MHz,
-		Integer localMaxTxPwrConstraint160MHz
+		Short localMaxTxPwrConstraint160MHz
 	) {
 		this.localMaxTxPwrConstraint20MHz = localMaxTxPwrConstraint20MHz;
 		this.localMaxTxPwrConstraint40MHz = localMaxTxPwrConstraint40MHz;
@@ -50,15 +57,24 @@ public class TxPwrInfo {
 	public static TxPwrInfo parse(JsonObject contents) {
 		JsonObject innerObj = contents.get("Tx Pwr Info").getAsJsonObject();
 		// required field
-		int localMaxTxPwrConstraint20MHz =
+		short localMaxTxPwrConstraint20MHz =
-			innerObj.get("Local Max Tx Pwr Constraint 20MHz").getAsInt();
+			innerObj.get("Local Max Tx Pwr Constraint 20MHz").getAsShort();
 		// optional field
-		Integer localMaxTxPwrConstraint40MHz =
+		Short localMaxTxPwrConstraint40MHz =
-			parseOptionalField(innerObj, "Local Max Tx Pwr Constraint 40MHz");
+			IEUtils.parseOptionalShortField(
-		Integer localMaxTxPwrConstraint80MHz =
+				innerObj,
-			parseOptionalField(innerObj, "Local Max Tx Pwr Constraint 80MHz");
+				"Local Max Tx Pwr Constraint 40MHz"
-		Integer localMaxTxPwrConstraint160MHz =
+			);
-			parseOptionalField(innerObj, "Local Max Tx Pwr Constraint 160MHz");
+		Short localMaxTxPwrConstraint80MHz =
+			IEUtils.parseOptionalShortField(
+				innerObj,
+				"Local Max Tx Pwr Constraint 40MHz"
+			);
+		Short localMaxTxPwrConstraint160MHz =
+			IEUtils.parseOptionalShortField(
+				innerObj,
+				"Local Max Tx Pwr Constraint 40MHz"
+			);
 		return new TxPwrInfo(
 			localMaxTxPwrConstraint20MHz,
 			localMaxTxPwrConstraint40MHz,
@@ -67,17 +83,6 @@ public class TxPwrInfo {
 		);
 	}
 
-	private static Integer parseOptionalField(
-		JsonObject contents,
-		String fieldName
-	) {
-		JsonElement element = contents.get(fieldName);
-		if (element == null) {
-			return null;
-		}
-		return element.getAsInt();
-	}
-
 	@Override
 	public int hashCode() {
 		return Objects.hash(
@@ -108,13 +113,4 @@ public class TxPwrInfo {
 				other.localMaxTxPwrConstraint40MHz &&
 			localMaxTxPwrConstraint80MHz == other.localMaxTxPwrConstraint80MHz;
 	}
-
-	@Override
-	public String toString() {
-		return "TxPwrInfo [localMaxTxPwrConstraint20MHz=" +
-			localMaxTxPwrConstraint20MHz + ", localMaxTxPwrConstraint40MHz=" +
-			localMaxTxPwrConstraint40MHz + ", localMaxTxPwrConstraint80MHz=" +
-			localMaxTxPwrConstraint80MHz + ", localMaxTxPwrConstraint160MHz=" +
-			localMaxTxPwrConstraint160MHz + "]";
-	}
 }

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/VHTOperation.java

@@ -15,9 +15,12 @@ import org.apache.commons.codec.binary.Base64;
 
 /**
  * Very High Throughput (VHT) Operation Element, which is potentially present in
- * wifiscan entries. Introduced in 802.11ac (2013).
+ * wifiscan entries. Introduced in 802.11ac (2013). Refer to the 802.11
+ * specification (section 9.4.2.158)
  */
 public class VHTOperation {
+	/** Defined in 802.11 table 9-92 */
+	public static final int TYPE = 192;
 
 	/**
 	 * This field is 0 if the channel width is 20 MHz or 40 MHz, and 1 otherwise.
@@ -173,4 +176,4 @@ public class VHTOperation {
 			channelWidth == other.channelWidth &&
 			Arrays.equals(vhtMcsForNss, other.vhtMcsForNss);
 	}
-}
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/ies/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Information elements (IEs) defined in the 802.11 specifications.
+ */
+package com.facebook.openwifi.cloudsdk.ies;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/kafka/UCentralKafkaConsumer.java

@@ -70,7 +70,12 @@ public class UCentralKafkaConsumer {
 		/** The state payload JSON. */
 		public final JsonObject payload;
 
-		/** Unix time (ms). */
+		/**
+		 * The record timestamp (Unix time, in ms).
+		 *
+		 * Depending on the broker configuration for "message.timestamp.type",
+		 * this may either be the "CreateTime" or "LogAppendTime".
+		 */
 		public final long timestampMs;
 
 		/** Constructor. */
@@ -85,7 +90,12 @@ public class UCentralKafkaConsumer {
 		}
 	}
 
-	/** Kafka record listener interface. */
+	/**
+	 * Kafka record listener interface.
+	 *
+	 * The inputs must NOT be mutated, as they may be passed to multiple
+	 * listeners and may result in ConcurrentModificationException.
+	 */
 	public interface KafkaListener {
 		/** Handle a list of state records. */
 		void handleStateRecords(List<KafkaRecord> records);
@@ -271,7 +281,6 @@ public class UCentralKafkaConsumer {
 					serialNumber,
 					payload.toString()
 				);
-				// record.timestamp() is empirically confirmed to be Unix time (ms)
 				KafkaRecord kafkaRecord =
 					new KafkaRecord(serialNumber, payload, record.timestamp());
 				if (record.topic().equals(stateTopic)) {

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/kafka/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Kafka consumer and producer functionality required by the CloudSDK.
+ */
+package com.facebook.openwifi.cloudsdk.kafka;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/ap/Capabilities.java

@@ -8,11 +8,16 @@
 
 package com.facebook.openwifi.cloudsdk.models.ap;
 
-import java.util.Map;
 import java.util.List;
+import java.util.Map;
 
 import com.google.gson.annotations.SerializedName;
 
+/**
+ * AP capabilities schema.
+ *
+ * @see <a href="https://github.com/Telecominfraproject/wlan-ucentral-schema/blob/main/system/capabilities.uc">capabilities.uc</a>
+ */
 public class Capabilities {
 	public String compatible;
 	public String model;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/ap/State.java

@@ -11,6 +11,11 @@ package com.facebook.openwifi.cloudsdk.models.ap;
 import com.google.gson.JsonObject;
 import com.google.gson.annotations.SerializedName;
 
+/**
+ * AP statistics/telemetry schema.
+ *
+ * @see <a href="https://github.com/Telecominfraproject/wlan-ucentral-schema/blob/main/state/state.yml">state.yml</a>
+ */
 public class State {
 	public static class Interface {
 		public static class Client {
@@ -54,6 +59,8 @@ public class State {
 				public int ack_signal;
 				public int ack_signal_avg;
 				public JsonObject[] tid_stats; // TODO: see cfg80211_tid_stats
+
+				// TODO ipaddr_v4 - either string or object (ip4leases), but duplicated in "clients"
 			}
 
 			public Association[] associations;
@@ -115,7 +122,7 @@ public class State {
 	public static class Radio {
 		public long active_ms;
 		public long busy_ms;
-		public int channel;
+		public int channel; // TODO might be int[] array??
 		public String channel_width;
 		public long noise;
 		public String phy;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/ap/UCentralSchema.java

@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.models.ap;
+
+import java.util.List;
+
+import com.google.gson.JsonPrimitive;
+import com.google.gson.annotations.SerializedName;
+
+/**
+ * AP configuration schema.
+ *
+ * @see <a href="https://github.com/Telecominfraproject/wlan-ucentral-schema/blob/main/schema/ucentral.yml">ucentral.yml</a>
+ */
+public class UCentralSchema {
+	public static class Radio {
+		public String band;
+		public int bandwidth;
+		public JsonPrimitive channel; // either "auto" or int
+		@SerializedName("valid-channels") public int[] validChannels;
+		public String country;
+		@SerializedName("allow-dfs") public boolean allowDfs;
+		@SerializedName("channel-mode") public String channelMode;
+		@SerializedName("channel-width") public int channelWidth;
+		@SerializedName("require-mode") public String requireMode;
+		public String mimo;
+		@SerializedName("tx-power") public int txPower;
+		@SerializedName("legacy-rates") public boolean legacyRates;
+		@SerializedName("beacon-interval") public int beaconInterval;
+		@SerializedName("dtim-period") public int dtimPeriod;
+		@SerializedName("maximum-clients") public int maximumClients;
+
+		public static class Rates {
+			public int beacon;
+			public int multicast;
+		}
+
+		public Rates rates;
+
+		public static class HESettings {
+			@SerializedName("multiple-bssid") public boolean multipleBssid;
+			public boolean ema;
+			@SerializedName("bss-color") public int bssColor;
+		}
+
+		@SerializedName("he-settings") public HESettings heSettings;
+
+		@SerializedName("hostapd-iface-raw") public String[] hostapdIfaceRaw;
+	}
+
+	public List<Radio> radios;
+
+	public static class Metrics {
+		public static class Statistics {
+			public int interval;
+			public List<String> types;
+		}
+
+		public Statistics statistics;
+
+		public static class Health {
+			public int interval;
+		}
+
+		public Health health;
+
+		public static class WifiFrames {
+			public List<String> filters;
+		}
+
+		@SerializedName("wifi-frames") public WifiFrames wifiFrames;
+
+		public static class DhcpSnooping {
+			public List<String> filters;
+		}
+
+		@SerializedName("dhcp-snooping") public DhcpSnooping dhcpSnooping;
+	}
+
+	public Metrics metrics;
+
+	// TODO also add fields below as needed
+	// unit
+	// globals
+	// definitions
+	// ethernet
+	// switch
+	// interfaces
+	// services
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/ap/WifiScanEntryResult.java

@@ -10,10 +10,15 @@ package com.facebook.openwifi.cloudsdk.models.ap;
 
 import java.util.Objects;
 
+import com.facebook.openwifi.cloudsdk.WifiScanEntry;
+
 /**
- * Represents a single entry in wifi scan results.
+ * Wi-Fi scan result schema.
- * ies[] array is not stored directly, but parsed into WifiScanEntry fields
+ * <p>
+ * Note that the {@code ies[]} array is not stored here, but parsed into
+ * {@link WifiScanEntry#ieContainer}.
  *
+ * @see <a href="https://github.com/Telecominfraproject/wlan-ucentral-schema/blob/main/command/cmd_wifiscan.uc">cmd_wifiscan.uc</a>
  */
 public class WifiScanEntryResult {
 	public int channel;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/ap/package-info.java

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Schemas originating from the AP-NOS (wlan-ap).
+ *
+ * @see <a href="https://github.com/Telecominfraproject/wlan-ucentral-schema">wlan-ucentral-schema</a>
+ */
+package com.facebook.openwifi.cloudsdk.models.ap;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/gw/ScriptRequest.java

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.cloudsdk.models.gw;
+
+public class ScriptRequest {
+	public String serialNumber;
+	public long timeout = 30; // in seconds
+	public String type; // "shell", "ucode", "uci"
+	public String script;
+	public String scriptId; // required but unused?
+	public long when = 0;
+}

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/gw/package-info.java

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Schemas defined in the uCentral Gateway.
+ *
+ * @see <a href="https://github.com/Telecominfraproject/wlan-cloud-ucentralgw">wlan-cloud-ucentralgw</a>
+ */
+package com.facebook.openwifi.cloudsdk.models.gw;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/prov/package-info.java

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Schemas defined in the Provisioning service.
+ *
+ * @see <a href="https://github.com/Telecominfraproject/wlan-cloud-owprov">wlan-cloud-owprov</a>
+ */
+package com.facebook.openwifi.cloudsdk.models.prov;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/models/prov/rrm/package-info.java

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Schemas defined in the Provisioning service specific to RRM.
+ *
+ * @see <a href="https://github.com/Telecominfraproject/wlan-cloud-owprov/blob/main/openapi/rrm_provider.yaml">rrm_provider.yaml</a>
+ */
+package com.facebook.openwifi.cloudsdk.models.prov.rrm;

lib-cloudsdk/src/main/java/com/facebook/openwifi/cloudsdk/package-info.java

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Library providing clients and models for the OpenWiFi uCentral-based
+ * CloudSDK.
+ */
+package com.facebook.openwifi.cloudsdk;

lib-rca/README.md

@@ -0,0 +1,3 @@
+# Root Cause Analysis (RCA) Java Library
+A Java library which analyzes statistics and provides root cause analysis (RCA) for clients.
+This is a work in progress.

lib-rca/pom.xml

@@ -0,0 +1,72 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>openwifi-librca</artifactId>
+  <packaging>jar</packaging>
+  <parent>
+    <groupId>com.facebook</groupId>
+    <artifactId>openwifi-base</artifactId>
+    <version>2.7.0</version>
+  </parent>
+  <properties>
+    <!-- Hack for static files located in root project -->
+    <myproject.root>${project.basedir}/..</myproject.root>
+  </properties>
+  <build>
+    <finalName>openwifi-librca</finalName>
+    <resources>
+      <resource>
+        <directory>src/main/resources</directory>
+        <includes>
+          <include>**/*</include>
+        </includes>
+      </resource>
+    </resources>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-javadoc-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>com.diffplug.spotless</groupId>
+        <artifactId>spotless-maven-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+  <dependencies>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-log4j12</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.json</groupId>
+      <artifactId>json</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.google.code.gson</groupId>
+      <artifactId>gson</artifactId>
+    </dependency>
+  </dependencies>
+</project>

lib-rca/src/main/java/com/facebook/openwifi/librca/RootCauseAnalyzer.java

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.librca;
+
+public class RootCauseAnalyzer {
+
+}

lib-rca/src/main/java/com/facebook/openwifi/librca/inputs/RCAParams.java

@@ -0,0 +1,212 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.librca.inputs;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/** Define root cause analysis configuration parameters */
+public final class RCAParams {
+	// Note: we expect to receive these parameters in json format, so for now
+	// we do not include a constructor which takes in the member vars as inputs
+
+	/** Look-back window in ms */
+	public final int detectionWindowMs;
+
+	// KPI calculation parameters
+	/** Minimum acceptable estimated throughput (Mbps) */
+	public final double minEstimatedThroughputMbps;
+	/** Percentile (units are %) of estimated throughputs to use as the KPI */
+	public final double throughputAggregationPercentile;
+	/** Maximum acceptable latency (ms) */
+	public final int maxLatencyThresholdMs;
+	/** Maximum acceptable jitter (ms) */
+	public final int maxJitterThresholdMs;
+	/**
+	 * Maximum acceptable disconnection rate (disconnetions per hour). Note that
+	 * this signifies a rate and the units happen to be per hour - this does not
+	 * signify that every contiguous one-hour period be checked.
+	 */
+	public final int maxDisconnectionRatePerHour;
+
+	// High Level metrics thresholds
+	/** Minimum acceptable tx rate (Mbps) */
+	public final double minTxRateMbps;
+	/** Maximum acceptable Packet Error Rate (PER) (units are %) */
+	public final double maxPERPercent;
+	/** Minimum acceptable idle airtime (units are %) */
+	public final double minIdleAirtimePercent;
+	/** Maximum acceptable number of clients for one radio */
+	public final int maxNumClients;
+
+	// Low Level metrics thresholds
+	/** Minimum acceptable RSSI (dBm) */
+	public final int minRssidBm;
+	/** Maximum acceptable noise (dBm) */
+	public final int maxNoisedBm;
+	/** Maximum acceptable intf airtime (units are %) */
+	public final double maxIntfAirtimePercent;
+	/** Maximum acceptable number of neighbors */
+	public final int maxNumNeighbors;
+	/** Minimum acceptable client bandwidth (MHz) for non-2G bands / */
+	public final int minClientBandwidthMHz;
+	/** Minimum acceptable Access Point (AP) bandwidth (MHz) for non-2G bands */
+	public final int minApBandwidthMHz;
+	/** Minimum acceptable self airtime ratio (units are %) */
+	public final double minSelfAirtimeRatioPercent;
+	/** Maximum acceptable tx dropped ratio (units are %) */
+	public final double maxTxDroppedRatioPercent;
+
+	/** Default constructor */
+	public RCAParams() {
+		// 6 hours -> 21600000 ms
+		this.detectionWindowMs = 21600000;
+
+		this.minEstimatedThroughputMbps = 10;
+		this.throughputAggregationPercentile = 10.0;
+		this.maxLatencyThresholdMs = 50;
+		this.maxJitterThresholdMs = 20;
+		this.maxDisconnectionRatePerHour = 20;
+
+		this.minTxRateMbps = 50;
+		this.maxPERPercent = 10.0;
+		this.minIdleAirtimePercent = 10.0;
+		this.maxNumClients = 10;
+
+		this.minRssidBm = -70;
+		this.maxNoisedBm = -95;
+		this.maxIntfAirtimePercent = 75.0;
+		this.maxNumNeighbors = 10;
+		this.minClientBandwidthMHz = 80;
+		this.minApBandwidthMHz = 80;
+		this.minSelfAirtimeRatioPercent = 25.0;
+		this.maxTxDroppedRatioPercent = 0.1;
+	}
+
+	/**
+	 * Confirm that the given value is positive. If it is not, add a String
+	 * describing the problem to {@code errors}.
+	 */
+	private static void validatePositive(
+		String varName,
+		int value,
+		List<String> errors
+	) {
+		if (value <= 0) {
+			errors.add(varName + " must be positive.");
+		}
+	}
+
+	/**
+	 * Confirm that the given value is positive. If it is not, add a String
+	 * describing the problem to {@code errors}.
+	 */
+	private static void validatePositive(
+		String varName,
+		double value,
+		List<String> errors
+	) {
+		if (value <= 0) {
+			errors.add(varName + " must be positive.");
+		}
+	}
+
+	/**
+	 * Confirm that the given value is a valid percentile (between 0 and 100
+	 * inclusive). If it is not, add a String describing the problem to
+	 * {@code errors}.
+	 */
+	private static void validatePercentile(
+		String varName,
+		double value,
+		List<String> errors
+	) {
+		if (value < 0 || value > 100) {
+			errors.add(varName + " must be between 0 and 100 inclusive.");
+		}
+	}
+
+	/** Return a list of errors (empty list of no errors) */
+	public List<String> validate() {
+		List<String> errors = new ArrayList<>();
+		validatePositive("Detection window", detectionWindowMs, errors);
+
+		validatePositive(
+			"Minimum estimated throughput",
+			minEstimatedThroughputMbps,
+			errors
+		);
+		validatePercentile(
+			"Thoughput aggregation percentile",
+			throughputAggregationPercentile,
+			errors
+		);
+		validatePositive(
+			"Maximum latency threshold",
+			maxLatencyThresholdMs,
+			errors
+		);
+		validatePositive(
+			"Maximum jitter threshold",
+			maxJitterThresholdMs,
+			errors
+		);
+		validatePositive(
+			"Maximum disconnection rate",
+			maxDisconnectionRatePerHour,
+			errors
+		);
+
+		validatePositive("Minimum tx rate", minTxRateMbps, errors);
+		validatePercentile(
+			"Maximum Packet Error Rate (PER)",
+			maxPERPercent,
+			errors
+		);
+		validatePercentile(
+			"Minimum idle airtime",
+			minIdleAirtimePercent,
+			errors
+		);
+		validatePositive("Maximum number of clients", maxNumClients, errors);
+
+		validatePercentile(
+			"Maximum intf airtime",
+			maxIntfAirtimePercent,
+			errors
+		);
+		validatePositive(
+			"Maximum number of neighbors",
+			maxNumNeighbors,
+			errors
+		);
+		validatePositive(
+			"Minimum client bandwidth",
+			minClientBandwidthMHz,
+			errors
+		);
+		validatePositive(
+			"Minimum Access Point (AP) bandwidth",
+			minApBandwidthMHz,
+			errors
+		);
+		validatePercentile(
+			"Minimum self airtime ratio",
+			minSelfAirtimeRatioPercent,
+			errors
+		);
+		validatePercentile(
+			"Maximum tx dropped ratio",
+			maxTxDroppedRatioPercent,
+			errors
+		);
+
+		return errors;
+	}
+}

lib-rca/src/main/java/com/facebook/openwifi/librca/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Library providing Root Cause Analysis (RCA) functionality.
+ */
+package com.facebook.openwifi.librca;

lib-rca/src/main/java/com/facebook/openwifi/librca/stats/ClientStats.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.librca.stats;
+
+import java.util.List;
+
+/**
+ * Aggregated statistics for each client.
+ * Mainly handle KPI and metric calculations.
+ */
+public class ClientStats {
+	/** Client MAC */
+	public String station;
+
+	/** LinkStats that are of the same station(client) */
+	public List<LinkStats> connections;
+}

lib-rca/src/main/java/com/facebook/openwifi/librca/stats/LinkStats.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.librca.stats;
+
+import java.util.List;
+
+/**
+ * Aggregation Statistics Model of InputStats.
+ * Aggregate by bssid, station and RadioConfig.
+ */
+public class LinkStats {
+	public static class RadioConfig {
+		public int channel;
+		public int channelWidth;
+		public int txPower;
+		public String phy;
+	}
+
+	public static class AssociationInfo {
+		/** Rate information for receive/transmit data rate. */
+		public static class Rate {
+			public long bitRate;
+			public int chWidth;
+			public int mcs;
+		}
+
+		public long connected;
+		public long inactive;
+		public int rssi;
+		public long rxBytes;
+		public long rxPackets;
+		public Rate rxRate;
+		public long txBytes;
+		public long txDuration;
+		public long txFailed;
+		public long txPackets;
+		public Rate txRate;
+		public long txRetries;
+		public int ackSignal;
+		public int ackSignalAvg;
+
+		// The metrics below are from Interface the client was connected to.
+		public long txPacketsCounters;
+		public long txErrorsCounters;
+		public long txDroppedCounters;
+
+		// The metrics below are from the radio the client was associated to.
+		public long activeMsRadio;
+		public long busyMsRadio;
+		public long noiseRadio;
+		public long receiveMsRadio;
+		public long transmitMsRadio;
+
+		/** Unix time in milliseconds */
+		public long timestamp;
+	}
+
+	/** BSSID of the AP radio */
+	public String bssid;
+
+	/** Client MAC */
+	public String station;
+
+	/** Radio configuration parameters */
+	public RadioConfig radioConfig;
+
+	/** Association list */
+	public List<AssociationInfo> associationInfoList;
+}

lib-rca/src/main/java/com/facebook/openwifi/librca/stats/inputs/InputStats.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.librca.stats.inputs;
+
+/**
+ * Input data model.
+ *
+ * TODO: very incomplete
+  */
+public class InputStats {
+	/** Radio parameters */
+	public static class Radio {
+		public long active_ms;
+		public long busy_ms;
+		public int channel;
+		public String channel_width;
+		public long noise;
+		public String phy;
+		public long receive_ms;
+		public long transmit_ms;
+		public int tx_power;
+	}
+
+	public static class SSID {
+		public static class Association {
+			public static class Rate {
+				public long bitrate;
+				public int chwidth;
+				public int mcs;
+			}
+
+			public String bssid; // bssid of the AP radio
+			public String station; // client MAC
+			public long connected;
+			public long inactive;
+			public int rssi;
+			public long rx_bytes;
+			public long rx_packets;
+			public Rate rx_rate;
+			public long tx_bytes;
+			public long tx_duration;
+			public long tx_failed;
+			public long tx_offset;
+			public long tx_packets;
+			public Rate tx_rate;
+			public long tx_retries;
+			public int ack_signal;
+			public int ack_signal_avg;
+		}
+
+		public Association[] associations;
+		public Radio radio;
+	}
+
+	/** Counters are for the wireless interface as a whole */
+	public static class Counters {
+		public long rx_bytes;
+		public long rx_packets;
+		public long rx_errors;
+		public long rx_dropped;
+		public long tx_bytes;
+		public long tx_packets;
+		public long tx_errors;
+		public long tx_dropped;
+	}
+
+	public SSID[] ssids;
+	public Counters counters;
+
+	/** Unix time in milliseconds */
+	public long timestamp;
+}

lib-rca/src/main/resources/log4j.properties

@@ -0,0 +1,7 @@
+log4j.rootLogger=DEBUG, stdout
+#log4j.rootLogger=ERROR, stdout, file
+
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd'T'HH:mm:ss.SSS} %-5p [%c{1}:%L] - %m%n

lib-rca/src/test/java/com/facebook/openwifi/librca/RootCauseAnalyzerTest.java

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.librca;
+
+import org.junit.jupiter.api.Test;
+
+public class RootCauseAnalyzerTest {
+
+	@Test
+	void placeholderTest() {
+		return;
+	}
+}

owrrm/.gitignore

@@ -1,4 +0,0 @@
-/*.log*
-/device_config.json
-/settings.json
-/topology.json

owrrm/ALGORITHMS.md

@@ -94,6 +94,30 @@ levels of these APs will be determined by the following steps:
 Parameters:
 * `mode`: "measure_ap_ap"
 * `coverageThreshold`: Coverage threshold between APs in dBm
-    * values:  int < 30 (default: -70)
+    * values: int < 30 (default: -70)
 * `nthSmallestRssi`: the nth smallest RSSI that is used for tx power calculation
     * values: int >= 0 (default: 0)
+
+## Client Steering
+`ClientSteeringOptimizer` and its subclasses implement client steering
+algorithms via 802.11k/v/r mechanisms, with the goal of moving clients to
+optimal APs and/or bands.
+
+**Client steering is a work in progress and NOT currently functional.**
+
+### `SingleAPBandSteering`
+This algorithm performs same-AP RRSI-based steering only, using a simple
+decision and backoff procedure.
+
+Parameters:
+* `mode`: "band"
+* `minRssi2G`: RSSI (dBm) below which a client on the 2G band should be kicked
+    * values: int < 30 (default: -87)
+* `maxRssi2G`: RSSI (dBm) above which a client on the 2G band should roam to
+   5G/6G
+    * values: int < 30 (default: -67)
+* `minRssiNon2G`: RSSI (dBm) below which a client on the 5G/6G band should roam
+  to 2G
+    * values: int < 30 (default: -82)
+* `backoffTimeSec`: Backoff time (seconds) for all APs and radios
+    * values: int >= 0 (default: 300)

owrrm/openapi.yaml

@@ -551,6 +551,12 @@ components:
             additionalProperties:
               type: integer
               format: int32
+        apClientActionMap:
+          type: object
+          additionalProperties:
+            type: object
+            additionalProperties:
+              type: string
     Certificate:
       type: object
       properties:

owrrm/src/main/java/com/facebook/openwifi/rrm/RRM.java

@@ -30,6 +30,7 @@ import com.facebook.openwifi.rrm.modules.Modeler;
 import com.facebook.openwifi.rrm.modules.ProvMonitor;
 import com.facebook.openwifi.rrm.modules.RRMScheduler;
 import com.facebook.openwifi.rrm.mysql.DatabaseManager;
+import com.facebook.openwifi.rrm.rca.modules.StationPinger;
 
 /**
  * RRM service runner.
@@ -134,10 +135,16 @@ public class RRM {
 				) : null;
 		KafkaRunner kafkaRunner = (consumer == null && producer == null)
 			? null : new KafkaRunner(consumer, producer);
+		StationPinger stationPinger = new StationPinger(
+			config.rcaConfig.stationPingerParams,
+			client,
+			consumer
+		);
 
 		// Add shutdown hook
 		Runtime.getRuntime().addShutdownHook(new Thread(() -> {
 			logger.debug("Running shutdown hook...");
+			stationPinger.shutdown();
 			if (kafkaRunner != null) {
 				kafkaRunner.shutdown();
 			}

owrrm/src/main/java/com/facebook/openwifi/rrm/RRMAlgorithm.java

@@ -20,6 +20,9 @@ import com.facebook.openwifi.rrm.optimizers.channel.ChannelOptimizer;
 import com.facebook.openwifi.rrm.optimizers.channel.LeastUsedChannelOptimizer;
 import com.facebook.openwifi.rrm.optimizers.channel.RandomChannelInitializer;
 import com.facebook.openwifi.rrm.optimizers.channel.UnmanagedApAwareChannelOptimizer;
+import com.facebook.openwifi.rrm.optimizers.clientsteering.ClientSteeringOptimizer;
+import com.facebook.openwifi.rrm.optimizers.clientsteering.ClientSteeringState;
+import com.facebook.openwifi.rrm.optimizers.clientsteering.SingleAPBandSteering;
 import com.facebook.openwifi.rrm.optimizers.tpc.LocationBasedOptimalTPC;
 import com.facebook.openwifi.rrm.optimizers.tpc.MeasurementBasedApApTPC;
 import com.facebook.openwifi.rrm.optimizers.tpc.MeasurementBasedApClientTPC;
@@ -33,6 +36,14 @@ public class RRMAlgorithm {
 	private static final Logger logger =
 		LoggerFactory.getLogger(RRMAlgorithm.class);
 
+	/**
+	 * Client steering state. A single instance must be passed into all client
+	 * steering algorithms, as the state must persist across runs of the
+	 * optimizers.
+	 */
+	private static final ClientSteeringState clientSteeringState =
+		new ClientSteeringState();
+
 	/** RRM algorithm type enum. */
 	public enum AlgorithmType {
 		OptimizeChannel (
@@ -42,6 +53,10 @@ public class RRMAlgorithm {
 		OptimizeTxPower (
 			"Optimize tx power configuration",
 			"Run transmit power control algorithm"
+		),
+		ClientSteering (
+			"Steer clients onto the optimal AP and band",
+			"Run client steering algorithm"
 		);
 
 		/** The long name. */
@@ -72,6 +87,13 @@ public class RRMAlgorithm {
 		 * @see TPC#computeTxPowerMap()
 		 */
 		public Map<String, Map<String, Integer>> txPowerMap;
+
+		/**
+		 * Computed actions for each AP-client pair.
+		 *
+		 * @see ClientSteeringOptimizer#computeApClientActionMap(boolean)
+		 */
+		public Map<String, Map<String, String>> apClientActionMap;
 	}
 
 	/** The algorithm name (should be AlgorithmType enum string). */
@@ -286,6 +308,41 @@ public class RRMAlgorithm {
 					configManager.queueZoneAndWakeUp(zone);
 				}
 			}
+		} else if (
+			name.equals(RRMAlgorithm.AlgorithmType.ClientSteering.name())
+		) {
+			logger.info(
+				"Zone '{}': Running client steering optimizer (mode='{}')",
+				zone,
+				mode
+			);
+			ClientSteeringOptimizer optimizer;
+			switch (mode) {
+			default:
+				if (!allowDefaultMode || !mode.isEmpty()) {
+					result.error = modeErrorStr;
+					return result;
+				}
+				logger.info("Using default algorithm mode...");
+				// fall through
+			case SingleAPBandSteering.ALGORITHM_ID:
+				optimizer = SingleAPBandSteering.makeWithArgs(
+					modeler.getDataModelCopy(),
+					zone,
+					deviceDataManager,
+					clientSteeringState,
+					args
+				);
+				break;
+			}
+			result.apClientActionMap =
+				optimizer.computeApClientActionMap(dryRun);
+			if (!dryRun) {
+				optimizer.steer(result.apClientActionMap);
+				if (updateImmediately) {
+					configManager.queueZoneAndWakeUp(zone);
+				}
+			}
 		} else {
 			result.error = String.format("Unknown algorithm: '%s'", name);
 		}

owrrm/src/main/java/com/facebook/openwifi/rrm/RRMConfig.java

@@ -10,6 +10,8 @@ package com.facebook.openwifi.rrm;
 
 import java.util.Map;
 
+import com.facebook.openwifi.rrm.rca.RCAConfig;
+
 /**
  * RRM service configuration model.
  */
@@ -405,6 +407,9 @@ public class RRMConfig {
 	/** Module configuration. */
 	public ModuleConfig moduleConfig = new ModuleConfig();
 
+	/** Root cause analysis configuration. */
+	public RCAConfig rcaConfig = new RCAConfig();
+
 	/** Construct RRMConfig from environment variables. */
 	public static RRMConfig fromEnv(Map<String, String> env) {
 		RRMConfig config = new RRMConfig();
@@ -583,6 +588,9 @@ public class RRMConfig {
 
 		// @formatter:on
 
+		/* RCAConfig */
+		config.rcaConfig = RCAConfig.fromEnv(env);
+
 		return config;
 	}
 }

owrrm/src/main/java/com/facebook/openwifi/rrm/modules/ConfigManager.java

@@ -8,7 +8,6 @@
 
 package com.facebook.openwifi.rrm.modules;
 
-import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
@@ -47,9 +46,6 @@ public class ConfigManager implements Runnable {
 
 	/** Runtime per-device data. */
 	private class DeviceData {
-		/** Last received device config. */
-		public UCentralApConfiguration config;
-
 		/** Last config time (in monotonic ns). */
 		public Long lastConfigTimeNs;
 	}
@@ -183,7 +179,7 @@ public class ConfigManager implements Runnable {
 		long now = System.nanoTime();
 
 		// Apply any config updates locally
-		List<String> devicesNeedingUpdate = new ArrayList<>();
+		Map<String, String> devicesNeedingUpdate = new HashMap<>();
 		final long CONFIG_DEBOUNCE_INTERVAL_NS =
 			params.configDebounceIntervalSec * 1_000_000_000L;
 		Set<String> zonesToUpdateCopy = new HashSet<>(zonesToUpdate);
@@ -204,11 +200,12 @@ public class ConfigManager implements Runnable {
 				);
 				continue;
 			}
-			data.config = new UCentralApConfiguration(device.configuration);
+			UCentralApConfiguration config =
+				new UCentralApConfiguration(device.configuration);
 
 			// Call receive listeners
 			for (ConfigListener listener : configListeners.values()) {
-				listener.receiveDeviceConfig(device.serialNumber, data.config);
+				listener.receiveDeviceConfig(device.serialNumber, config);
 			}
 			// Check if there are requested updates for this zone
 			String deviceZone =
@@ -236,7 +233,7 @@ public class ConfigManager implements Runnable {
 			for (ConfigListener listener : configListeners.values()) {
 				boolean wasModified = listener.processDeviceConfig(
 					device.serialNumber,
-					data.config
+					config
 				);
 				if (wasModified) {
 					modified = true;
@@ -257,7 +254,8 @@ public class ConfigManager implements Runnable {
 					);
 					continue;
 				} else {
-					devicesNeedingUpdate.add(device.serialNumber);
+					devicesNeedingUpdate
+						.put(device.serialNumber, config.toString());
 				}
 			}
 		}
@@ -275,19 +273,26 @@ public class ConfigManager implements Runnable {
 				devicesNeedingUpdate.size()
 			);
 		} else {
+			// TODO: Replace with the newer owprov API to send only deltas, not
+			// the full configuration blobs:
+			//   PUT /configurationOverrides/{serialNumber}?source=owrrm
 			logger.info(
 				"Sending config to {} device(s): {}",
 				devicesNeedingUpdate.size(),
-				String.join(", ", devicesNeedingUpdate)
+				String.join(", ", devicesNeedingUpdate.keySet())
 			);
-			for (String serialNumber : devicesNeedingUpdate) {
+			for (
+				Map.Entry<String, String> entry : devicesNeedingUpdate
+					.entrySet()
+			) {
+				String serialNumber = entry.getKey();
 				DeviceData data = deviceDataMap.get(serialNumber);
 				logger.info(
 					"Device {}: sending new configuration...",
 					serialNumber
 				);
 				data.lastConfigTimeNs = System.nanoTime();
-				client.configure(serialNumber, data.config.toString());
+				client.configure(serialNumber, entry.getValue());
 			}
 		}
 	}

owrrm/src/main/java/com/facebook/openwifi/rrm/modules/Modeler.java

@@ -8,6 +8,7 @@
 
 package com.facebook.openwifi.rrm.modules;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
@@ -20,6 +21,7 @@ import java.util.concurrent.LinkedBlockingQueue;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.facebook.openwifi.cloudsdk.StateInfo;
 import com.facebook.openwifi.cloudsdk.UCentralApConfiguration;
 import com.facebook.openwifi.cloudsdk.UCentralClient;
 import com.facebook.openwifi.cloudsdk.UCentralUtils;
@@ -27,7 +29,7 @@ import com.facebook.openwifi.cloudsdk.WifiScanEntry;
 import com.facebook.openwifi.cloudsdk.kafka.UCentralKafkaConsumer;
 import com.facebook.openwifi.cloudsdk.kafka.UCentralKafkaConsumer.KafkaRecord;
 import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
-import com.facebook.openwifi.cloudsdk.models.ap.State;
+import com.facebook.openwifi.cloudsdk.models.ap.UCentralSchema;
 import com.facebook.openwifi.cloudsdk.models.gw.DeviceCapabilities;
 import com.facebook.openwifi.cloudsdk.models.gw.DeviceWithStatus;
 import com.facebook.openwifi.cloudsdk.models.gw.ServiceEvent;
@@ -37,7 +39,6 @@ import com.facebook.openwifi.rrm.DeviceDataManager;
 import com.facebook.openwifi.rrm.RRMConfig.ModuleConfig.ModelerParams;
 import com.facebook.openwifi.rrm.Utils;
 import com.google.gson.Gson;
-import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonSyntaxException;
 
@@ -95,11 +96,11 @@ public class Modeler implements Runnable {
 			new ConcurrentHashMap<>();
 
 		/** List of latest states per device. */
-		public Map<String, List<State>> latestStates =
+		public Map<String, List<StateInfo>> latestStates =
 			new ConcurrentHashMap<>();
 
 		/** List of radio info per device. */
-		public Map<String, JsonArray> latestDeviceStatusRadios =
+		public Map<String, List<UCentralSchema.Radio>> latestDeviceStatusRadios =
 			new ConcurrentHashMap<>();
 
 		/** List of capabilities per device. */
@@ -169,10 +170,15 @@ public class Modeler implements Runnable {
 			consumer.addKafkaListener(
 				getClass().getSimpleName(),
 				new UCentralKafkaConsumer.KafkaListener() {
+					// NOTE: list copying due to potential modification in run()
+
 					@Override
 					public void handleStateRecords(List<KafkaRecord> records) {
 						dataQueue.offer(
-							new InputData(InputDataType.STATE, records)
+							new InputData(
+								InputDataType.STATE,
+								new ArrayList<>(records)
+							)
 						);
 					}
 
@@ -181,7 +187,10 @@ public class Modeler implements Runnable {
 						List<KafkaRecord> records
 					) {
 						dataQueue.offer(
-							new InputData(InputDataType.WIFISCAN, records)
+							new InputData(
+								InputDataType.WIFISCAN,
+								new ArrayList<>(records)
+							)
 						);
 					}
 
@@ -266,9 +275,12 @@ public class Modeler implements Runnable {
 				continue;
 			}
 			JsonObject state = records.data.get(0).data;
+			long timestamp = records.data.get(0).recorded;
 			if (state != null) {
 				try {
-					State stateModel = gson.fromJson(state, State.class);
+					StateInfo stateModel =
+						gson.fromJson(state, StateInfo.class);
+					stateModel.timestamp = timestamp;
 					dataModel.latestStates.computeIfAbsent(
 						device.serialNumber,
 						k -> new LinkedList<>()
@@ -303,12 +315,15 @@ public class Modeler implements Runnable {
 				JsonObject state = record.payload.getAsJsonObject("state");
 				if (state != null) {
 					try {
-						State stateModel = gson.fromJson(state, State.class);
+						StateInfo stateModel =
-						List<State> latestStatesList = dataModel.latestStates
+							gson.fromJson(state, StateInfo.class);
-							.computeIfAbsent(
+						stateModel.timestamp = record.timestampMs;
-								record.serialNumber,
+						List<StateInfo> latestStatesList =
-								k -> new LinkedList<>()
+							dataModel.latestStates
-							);
+								.computeIfAbsent(
+									record.serialNumber,
+									k -> new LinkedList<>()
+								);
 						while (
 							latestStatesList.size() >= params.stateBufferSize
 						) {
@@ -391,10 +406,11 @@ public class Modeler implements Runnable {
 		UCentralApConfiguration config
 	) {
 		// Get old vs new radios info and store the new radios info
-		JsonArray newRadioList = config.getRadioConfigList();
+		List<UCentralSchema.Radio> newRadioList = config.getRadioConfigList();
 		Set<String> newRadioBandsSet = config.getRadioBandsSet(newRadioList);
-		JsonArray oldRadioList = dataModel.latestDeviceStatusRadios
+		List<UCentralSchema.Radio> oldRadioList =
-			.put(serialNumber, newRadioList);
+			dataModel.latestDeviceStatusRadios
+				.put(serialNumber, newRadioList);
 		Set<String> oldRadioBandsSet = config.getRadioBandsSet(oldRadioList);
 
 		// Print info only when there are any updates

owrrm/src/main/java/com/facebook/openwifi/rrm/modules/ModelerUtils.java

@@ -22,6 +22,7 @@ import org.slf4j.LoggerFactory;
 import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
 import com.facebook.openwifi.cloudsdk.AggregatedState;
 import com.facebook.openwifi.cloudsdk.WifiScanEntry;
+import com.facebook.openwifi.cloudsdk.StateInfo;
 import com.facebook.openwifi.cloudsdk.ies.HTOperation;
 import com.facebook.openwifi.cloudsdk.ies.VHTOperation;
 import com.facebook.openwifi.cloudsdk.models.ap.State;
@@ -404,22 +405,13 @@ public class ModelerUtils {
 	 */
 	static void addStateToAggregation(
 		Map<String, List<AggregatedState>> bssidToAggregatedStates,
-		State state
+		StateInfo state
 	) {
 		for (Interface stateInterface : state.interfaces) {
 			if (stateInterface.ssids == null) {
 				continue;
 			}
 			for (SSID ssid : stateInterface.ssids) {
-				Map<String, Integer> radioInfo = new HashMap<>();
-				radioInfo.put("channel", ssid.radio.get("channel").getAsInt());
-				radioInfo.put(
-					"channel_width",
-					ssid.radio.get("channel_width").getAsInt()
-				);
-				radioInfo
-					.put("tx_power", ssid.radio.get("tx_power").getAsInt());
-
 				for (Association association : ssid.associations) {
 					if (association == null) {
 						continue;
@@ -432,7 +424,12 @@ public class ModelerUtils {
 						bssidToAggregatedStates
 							.computeIfAbsent(key, k -> new ArrayList<>());
 					AggregatedState aggState =
-						new AggregatedState(association, radioInfo);
+						new AggregatedState(
+							association,
+							ssid.counters,
+							ssid.radio,
+							state.timestamp
+						);
 
 					/**
 					 * Indicate if the aggState can be merged into some old AggregatedState.
@@ -489,11 +486,11 @@ public class ModelerUtils {
 			new HashMap<>();
 
 		for (
-			Map.Entry<String, List<State>> deviceToStateList : dataModel.latestStates
+			Map.Entry<String, List<StateInfo>> deviceToStateList : dataModel.latestStates
 				.entrySet()
 		) {
 			String serialNumber = deviceToStateList.getKey();
-			List<State> states = deviceToStateList.getValue();
+			List<StateInfo> states = deviceToStateList.getValue();
 
 			if (states.isEmpty()) {
 				continue;
@@ -512,7 +509,7 @@ public class ModelerUtils {
 				aggregatedStates
 					.computeIfAbsent(serialNumber, k -> new HashMap<>());
 
-			for (State state : states) {
+			for (StateInfo state : states) {
 				if (refTimeMs - state.unit.localtime > obsoletionPeriodMs) {
 					// discard obsolete entries
 					break;
@@ -530,15 +527,16 @@ public class ModelerUtils {
 	 * @param latestStates list of latest States per device
 	 * @return map from device String to latest State
 	 */
-	public static Map<String, State> getLatestState(
+	public static Map<String, StateInfo> getLatestState(
-		Map<String, List<State>> latestStates
+		Map<String, List<StateInfo>> latestStates
 	) {
-		Map<String, State> latestState = new ConcurrentHashMap<>();
+		Map<String, StateInfo> latestState = new ConcurrentHashMap<>();
 		for (
-			Map.Entry<String, List<State>> stateEntry : latestStates.entrySet()
+			Map.Entry<String, List<StateInfo>> stateEntry : latestStates
+				.entrySet()
 		) {
 			String key = stateEntry.getKey();
-			List<State> value = stateEntry.getValue();
+			List<StateInfo> value = stateEntry.getValue();
 			if (value.isEmpty()) {
 				latestState.put(key, null);
 			} else {

owrrm/src/main/java/com/facebook/openwifi/rrm/modules/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * RRM service modules.
+ */
+package com.facebook.openwifi.rrm.modules;

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/channel/LeastUsedChannelOptimizer.java

@@ -341,7 +341,7 @@ public class LeastUsedChannelOptimizer extends ChannelOptimizer {
 				UCentralUtils.AVAILABLE_CHANNELS_BAND
 			);
 
-		Map<String, State> latestState =
+		Map<String, ? extends State> latestState =
 			ModelerUtils.getLatestState(model.latestStates);
 		Map<String, String> bssidsMap =
 			UCentralUtils.getBssidsMap(latestState);

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/channel/RandomChannelInitializer.java

@@ -129,7 +129,7 @@ public class RandomChannelInitializer extends ChannelOptimizer {
 				UCentralUtils.AVAILABLE_CHANNELS_BAND
 			);
 
-		Map<String, State> latestState =
+		Map<String, ? extends State> latestState =
 			ModelerUtils.getLatestState(model.latestStates);
 		Map<String, String> bssidsMap =
 			UCentralUtils.getBssidsMap(latestState);

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/channel/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Channel assignment algorithms.
+ */
+package com.facebook.openwifi.rrm.optimizers.channel;

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/clientsteering/ClientSteeringOptimizer.java

@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.rrm.optimizers.clientsteering;
+
+import java.util.Map;
+
+import com.facebook.openwifi.rrm.DeviceConfig;
+import com.facebook.openwifi.rrm.DeviceDataManager;
+import com.facebook.openwifi.rrm.modules.Modeler.DataModel;
+
+/** Client steering base class */
+public abstract class ClientSteeringOptimizer {
+	// TODO call upon triggers, not only via one-off or period runs
+
+	/** Represents client steering actions an AP can take */
+	public static enum CLIENT_STEERING_ACTIONS {
+		/** Steer from 2G to 5G/6G */
+		STEER_UP,
+		/** Steer from 5G/6G to 2G */
+		STEER_DOWN,
+		/** Deauthenticate client */
+		DEAUTHENTICATE
+	}
+
+	/**
+	 * 802.11 BTM reason codes (ex. for deauth).
+	 *
+	 * See IEEE Std 802.11-2016, 9.4.1.7, Table 9-45.
+	 */
+	public static class BTMReasonCode {
+		private BTMReasonCode() {}
+
+		public static final int UNSPECIFIED = 1;
+		public static final int PREV_AUTH_NOT_VALID = 2;
+		public static final int DEAUTH_LEAVING = 3;
+		public static final int DISASSOC_DUE_TO_INACTIVITY = 4;
+		public static final int DISASSOC_AP_BUSY = 5;
+		public static final int CLASS2_FRAME_FROM_NONAUTH_STA = 6;
+		public static final int CLASS3_FRAME_FROM_NONASSOC_STA = 7;
+		public static final int DISASSOC_STA_HAS_LEFT = 8;
+		public static final int STA_REQ_ASSOC_WITHOUT_AUTH = 9;
+		public static final int PWR_CAPABILITY_NOT_VALID = 10;
+		public static final int SUPPORTED_CHANNEL_NOT_VALID = 11;
+		public static final int INVALID_IE = 13;
+		public static final int MICHAEL_MIC_FAILURE = 14;
+		public static final int FOURWAY_HANDSHAKE_TIMEOUT = 15;
+		public static final int GROUP_KEY_UPDATE_TIMEOUT = 16;
+		public static final int IE_IN_4WAY_DIFFERS = 17;
+		public static final int GROUP_CIPHER_NOT_VALID = 18;
+		public static final int PAIRWISE_CIPHER_NOT_VALID = 19;
+		public static final int AKMP_NOT_VALID = 20;
+		public static final int UNSUPPORTED_RSN_IE_VERSION = 21;
+		public static final int INVALID_RSN_IE_CAPAB = 22;
+		public static final int IEEE_802_1X_AUTH_FAILED = 23;
+		public static final int CIPHER_SUITE_REJECTED = 24;
+		public static final int TDLS_TEARDOWN_UNREACHABLE = 25;
+		public static final int TDLS_TEARDOWN_UNSPECIFIED = 26;
+		public static final int DISASSOC_LOW_ACK = 34;
+		public static final int MESH_PEERING_CANCELLED = 52;
+		public static final int MESH_MAX_PEERS = 53;
+		public static final int MESH_CONFIG_POLICY_VIOLATION = 54;
+		public static final int MESH_CLOSE_RCVD = 55;
+		public static final int MESH_MAX_RETRIES = 56;
+		public static final int MESH_CONFIRM_TIMEOUT = 57;
+		public static final int MESH_INVALID_GTK = 58;
+		public static final int MESH_INCONSISTENT_PARAMS = 59;
+		public static final int MESH_INVALID_SECURITY_CAP = 60;
+		public static final int MESH_PATH_ERROR_NO_PROXY_INFO = 61;
+		public static final int MESH_PATH_ERROR_NO_FORWARDING_INFO = 62;
+		public static final int MESH_PATH_ERROR_DEST_UNREACHABLE = 63;
+		public static final int MAC_ADDRESS_ALREADY_EXISTS_IN_MBSS = 64;
+		public static final int MESH_CHANNEL_SWITCH_REGULATORY_REQ = 65;
+		public static final int MESH_CHANNEL_SWITCH_UNSPECIFIED = 66;
+	}
+
+	/** The input data model. */
+	protected final DataModel model;
+	/** The RF zone. */
+	protected final String zone;
+	/** The device configs within {@link #zone}, keyed on serial number. */
+	protected final Map<String, DeviceConfig> deviceConfigs;
+	/** Client steering state */
+	protected final ClientSteeringState clientSteeringState;
+
+	/** Constructor */
+	public ClientSteeringOptimizer(
+		DataModel model,
+		String zone,
+		DeviceDataManager deviceDataManager,
+		ClientSteeringState clientSteeringState
+	) {
+		this.model = model;
+		this.zone = zone;
+		this.deviceConfigs = deviceDataManager.getAllDeviceConfigs(zone);
+
+		this.clientSteeringState = clientSteeringState;
+
+		// Remove model entries not in the given zone
+		this.model.latestWifiScans.keySet()
+			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber));
+		this.model.latestStates.keySet()
+			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber));
+		this.model.latestDeviceStatusRadios.keySet()
+			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber));
+		this.model.latestDeviceCapabilitiesPhy.keySet()
+			.removeIf(serialNumber -> !deviceConfigs.containsKey(serialNumber));
+	}
+
+	/**
+	 * Compute map from AP serial number to client MAC to client steering
+	 * action.
+	 */
+	public abstract Map<String, Map<String, String>> computeApClientActionMap(
+		boolean dryRun
+	);
+
+	/**
+	 * Steer clients (steer up, steer down, and deauthenticate).
+	 *
+	 * @param apClientActionMap the map from AP serial number to client MAC to
+	 *                          action to take
+	 */
+	public void steer(
+		Map<String, Map<String, String>> apClientActionMap
+	) {
+		// FIXME implement this
+		//
+		// TODO: input must also contain AP interface for each client (needed in hostapd commands below)
+		//
+		// NOTE: 802.11k/v features must first be enabled on APs:
+		//         ubus call hostapd.<iface> bss_mgmt_enable \
+		//         '{"neighbor_report": true, "beacon_report": true, "link_measurements": true, "bss_transition": true}'
+		//
+		// Actions:
+		//
+		// - Kick/Deauth:
+		//     ubus call hostapd.<iface> del_client \
+		//     '{"addr": "<client_mac>", "reason": 5, "deauth": true}'
+		//   Where "reason" is a code in BTMReasonCode
+		//
+		// - Steer:
+		//     ubus call hostapd.<iface> bss_transition_request \
+		//     '{"addr": "<client_mac>", "disassociation_imminent": false, "disassociation_timer": 0, "validity_period": 30, "neighbors": ["<hex>"], "abridged": 1}'
+		//   Where "neighbors" list element = a hex identifier (array index 2 in command below) - MUST fetch per interface per AP
+		//     ubus call hostapd.<iface> rrm_nr_get_own
+		//   TODO: also send Multi Band Operation (MBO) code ("mbo_reason") for 802.11ax clients
+	}
+
+	// TODO Issue 802.11k RRM Beacon Measurement Requests periodically
+	// 1. Enable 802.11k/v features on the AP ("bss_mgmt_enable" hostapd command)
+	// 2. Send request to client
+	//      ubus call hostapd.wlan0-1 rrm_beacon_req '{"addr": "<client_mac>", "channel": <number>, "mode": 1, "op_class": 128, "duration": 100}'
+	// 3. Must be subscribed to hostapd 'beacon-report' event on AP to receive reply ("BEACON-RESP-RX")
+	//      ubus subscribe hostapd.<iface>
+}

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/clientsteering/ClientSteeringState.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.rrm.optimizers.clientsteering;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
+/** Class to manage global client steering state */
+public class ClientSteeringState {
+	/**
+	 * Map from AP serial number to client MAC to time (JVM monotonic time in
+	 * ns) of the latest attempted client steering action. The {@code Long}
+	 * values are never null.
+	 */
+	private ConcurrentMap<String, Map<String, Long>> apClientLastAttempt =
+		new ConcurrentHashMap<>();
+
+	/**
+	 * Register a client steering attempt for the given AP and station at the
+	 * given time if there is no previous registered attempt or more than the
+	 * given backoff time has passed since the registration time of the last
+	 * attempt and the current time. Note that only registration times are
+	 * checked and/or entered, and nothing is executed here. Return true if the
+	 * attempt was registered; false otherwise. The attempt is not registered if
+	 * this run is specified as a dry run.
+	 * <p>
+	 * The backoff time must be non-negative. The backoff time window is
+	 * "exclusive" - e.g., if the backoff time is X ns, and the current time is
+	 * exactly X ns after the last attempt, the backoff is considered expired.
+	 * <p>
+	 * Note that if there was a previous attempt for the given AP and station,
+	 * the current time must not be before the last attempt.
+	 *
+	 * @param apSerialNumber AP serial number
+	 * @param station client MAC
+	 * @param currentTimeNs JVM monotonic time in ns
+	 * @param backoffTimeNs non-negative backoff time (ns)
+	 * @param dryRun if set, do not apply changes
+	 * @return true if client steering attempt was registered; false otherwise
+	 */
+	public boolean registerIfBackoffExpired(
+		String apSerialNumber,
+		String station,
+		long currentTimeNs,
+		long backoffTimeNs,
+		boolean dryRun
+	) {
+		if (backoffTimeNs < 0) {
+			throw new IllegalArgumentException(
+				"Backoff time must be non-negative."
+			);
+		}
+		// get last attempt
+		Map<String, Long> clientLastAttempt = apClientLastAttempt
+			.computeIfAbsent(apSerialNumber, k -> new HashMap<>());
+		synchronized (clientLastAttempt) {
+			Long lastAttempt = clientLastAttempt.get(station);
+			// check if backoff expired
+			if (
+				lastAttempt != null &&
+					currentTimeNs - lastAttempt < backoffTimeNs
+			) {
+				return false;
+			}
+			// register attempt
+			if (!dryRun) {
+				clientLastAttempt.put(station, currentTimeNs);
+			}
+		}
+		return true;
+	}
+}

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/clientsteering/SingleAPBandSteering.java

@@ -0,0 +1,314 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.rrm.optimizers.clientsteering;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.facebook.openwifi.cloudsdk.StateInfo;
+import com.facebook.openwifi.cloudsdk.UCentralConstants;
+import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
+import com.facebook.openwifi.cloudsdk.models.ap.State;
+import com.facebook.openwifi.rrm.DeviceDataManager;
+import com.facebook.openwifi.rrm.modules.Modeler.DataModel;
+import com.facebook.openwifi.rrm.modules.ModelerUtils;
+import com.google.gson.Gson;
+
+/**
+ * Implements simple band steering for each AP separately
+ * <p>
+ * 2G clients below a specified RSSI threshold are deauthenticated. 2G clients
+ * above a specified RSSI threshold are asked to move to either 5G or 6G. 5G and
+ * 6G clients below a configurable RSSI threshold are asked to move to 2G.
+ */
+public class SingleAPBandSteering extends ClientSteeringOptimizer {
+	private static final Logger logger =
+		LoggerFactory.getLogger(SingleAPBandSteering.class);
+
+	/** The RRM algorithm ID. */
+	public static final String ALGORITHM_ID = "band";
+
+	/** The Gson instance. */
+	private static final Gson gson = new Gson();
+
+	/**
+	 * RSSI (dBm) below which a client on 2G should be disconnected using
+	 * deauthentication.
+	 */
+	public static final short DEFAULT_MIN_RSSI_2G = -87;
+	/**
+	 * RSSI (dBm) above which a client on 2G should be requested to move to
+	 * 5G/6G
+	 */
+	public static final short DEFAULT_MAX_RSSI_2G = -67;
+	/**
+	 * RSSI (dBm) below which a client on 5G/6G should be requested to move to
+	 * 2G
+	 */
+	public static final short DEFAULT_MIN_RSSI_NON_2G = -82;
+	/** Default backoff time (ns) for all APs and radios */
+	public static final long DEFAULT_BACKOFF_TIME_NS = 300_000_000_000L; // 5 min
+
+	/** RSSI below which 2G clients are deauthenticated */
+	private final short minRssi2G;
+	/** RSSI above which 2G clients are asked to move to 5G or 6G */
+	private final short maxRssi2G;
+	/** RSSI below which 5G and 6G clients are asked to move to 2G */
+	private final short minRssiNon2G;
+	/** Backoff time (ns) for all APs and radios */
+	private final long backoffTimeNs;
+
+	/** Make a SingleAPBandSteering object with the given arguments */
+	public static SingleAPBandSteering makeWithArgs(
+		DataModel model,
+		String zone,
+		DeviceDataManager deviceDataManager,
+		ClientSteeringState clientSteeringState,
+		Map<String, String> args
+	) {
+		short minRssi2G = DEFAULT_MIN_RSSI_2G;
+		short maxRssi2G = DEFAULT_MAX_RSSI_2G;
+		short minRssiNon2G = DEFAULT_MIN_RSSI_NON_2G;
+		long backoffTimeNs = DEFAULT_BACKOFF_TIME_NS;
+
+		String arg;
+		if ((arg = args.get("minRssi2G")) != null) {
+			minRssi2G = Short.parseShort(arg);
+		}
+		if ((arg = args.get("maxRssi2G")) != null) {
+			maxRssi2G = Short.parseShort(arg);
+		}
+		if ((arg = args.get("minRssiNon2G")) != null) {
+			minRssiNon2G = Short.parseShort(arg);
+		}
+		if ((arg = args.get("backoffTimeSec")) != null) {
+			backoffTimeNs = Long.parseLong(arg) * 1_000_000_000L;
+		}
+
+		return new SingleAPBandSteering(
+			model,
+			zone,
+			deviceDataManager,
+			clientSteeringState,
+			minRssi2G,
+			maxRssi2G,
+			minRssiNon2G,
+			backoffTimeNs
+		);
+	}
+
+	/** Constructor */
+	public SingleAPBandSteering(
+		DataModel model,
+		String zone,
+		DeviceDataManager deviceDataManager,
+		ClientSteeringState clientSteeringState,
+		short minRssi2G,
+		short maxRssi2G,
+		short minRssiNon2G,
+		long backoffTimeNs
+	) {
+		super(model, zone, deviceDataManager, clientSteeringState);
+		this.minRssi2G = minRssi2G;
+		this.maxRssi2G = maxRssi2G;
+		this.minRssiNon2G = minRssiNon2G;
+		this.backoffTimeNs = backoffTimeNs;
+	}
+
+	@Override
+	public Map<String, Map<String, String>> computeApClientActionMap(
+		boolean dryRun
+	) {
+		Map<String, Map<String, String>> apClientActionMap = new HashMap<>();
+		// iterate through every AP
+		for (
+			Map.Entry<String, List<StateInfo>> entry : model.latestStates
+				.entrySet()
+		) {
+			// get the latest state
+			// TODO window size (look at multiple states)
+			// TODO window percent (% of samples that must violate thresholds)
+			// TODO also check wifiscan IEs to see if 11k beacon requests are supported/enabled
+			//      (RMEnabledCapabilities.beaconActiveMeasurementCapabilityEnabled)
+			List<? extends State> states = entry.getValue();
+			if (states == null || states.isEmpty()) {
+				continue;
+			}
+			final String serialNumber = entry.getKey();
+			final State state = states.get(states.size() - 1);
+			// iterate through every radio and every connected client
+			if (state.interfaces == null || state.interfaces.length == 0) {
+				continue;
+			}
+			final long currentTimeNs = System.nanoTime();
+			for (State.Interface iface : state.interfaces) {
+				if (iface.ssids == null || iface.ssids.length == 0) {
+					continue;
+				}
+				for (State.Interface.SSID ssid : iface.ssids) {
+					if (
+						ssid.associations == null ||
+							ssid.associations.length == 0
+					) {
+						continue;
+					}
+					final State.Radio radio = gson.fromJson(
+						ssid.radio,
+						State.Radio.class
+					);
+					// get band for this radio/ssid
+					Map<String, Capabilities.Phy> capabilitiesPhy =
+						model.latestDeviceCapabilitiesPhy
+							.get(serialNumber);
+					if (capabilitiesPhy == null) {
+						continue;
+					}
+					final String band = ModelerUtils.getBand(
+						radio,
+						capabilitiesPhy
+					);
+					if (band == null) {
+						continue;
+					}
+					// decide steering action (if any) for each client
+					for (
+						State.Interface.SSID.Association assoc : ssid.associations
+					) {
+						maybeAddApClientActionEntry(
+							assoc,
+							band,
+							serialNumber,
+							currentTimeNs,
+							apClientActionMap,
+							dryRun
+						);
+					}
+				}
+			}
+		}
+		return apClientActionMap;
+	}
+
+	/**
+	 * If a client steering action is desired, add an appropriate entry to the
+	 * apClientActionMap, unless this run is marked as a dry run.
+	 *
+	 * @param assoc association between AP radio and client
+	 * @param band band (e.g., "2G")
+	 * @param serialNumber AP serial number
+	 * @param currentTimeNs JVM monotonic time in ns
+	 * @param dryRun if set, do not apply changes
+	 * @param apClientActionMap map from AP serial number to client MAC to client
+	 *                          steering action name ({@link ClientSteeringOptimizer.CLIENT_STEERING_ACTIONS})
+	 */
+	private void maybeAddApClientActionEntry(
+		State.Interface.SSID.Association assoc,
+		String band,
+		String serialNumber,
+		long currentTimeNs,
+		Map<String, Map<String, String>> apClientActionMap,
+		boolean dryRun
+	) {
+		// decide whether to do any band steering
+		// TODO check which bands AP & client can use (see 11k)
+		if (UCentralConstants.BAND_2G.equals(band)) {
+			if (assoc.rssi < minRssi2G) {
+				if (
+					clientSteeringState
+						.registerIfBackoffExpired(
+							serialNumber,
+							assoc.station,
+							currentTimeNs,
+							backoffTimeNs,
+							dryRun
+						)
+				) {
+					logger.debug(
+						"Planning to deauthenticate client {} on AP {}",
+						assoc.station,
+						serialNumber
+					);
+					apClientActionMap
+						.computeIfAbsent(
+							serialNumber,
+							k -> new HashMap<>()
+						)
+						.put(
+							assoc.station,
+							CLIENT_STEERING_ACTIONS.DEAUTHENTICATE
+								.name()
+						);
+				}
+			} else if (assoc.rssi > maxRssi2G) {
+				if (
+					clientSteeringState
+						.registerIfBackoffExpired(
+							serialNumber,
+							assoc.station,
+							currentTimeNs,
+							backoffTimeNs,
+							dryRun
+						)
+				) {
+					logger.debug(
+						"Planning to request client {} on AP {} to move to 5G or 6G",
+						assoc.station,
+						serialNumber
+					);
+					apClientActionMap
+						.computeIfAbsent(
+							serialNumber,
+							k -> new HashMap<>()
+						)
+						.put(
+							assoc.station,
+							CLIENT_STEERING_ACTIONS.STEER_UP
+								.name()
+						);
+				}
+			}
+			// otherwise, do nothing
+		} else {
+			// treat 5G and 6G clients the same way
+			if (assoc.rssi < minRssiNon2G) {
+				if (
+					clientSteeringState
+						.registerIfBackoffExpired(
+							serialNumber,
+							assoc.station,
+							currentTimeNs,
+							backoffTimeNs,
+							dryRun
+						)
+				) {
+					logger.debug(
+						"Planning to request client {} on AP {} to move to 2G",
+						assoc.station,
+						serialNumber
+					);
+					apClientActionMap
+						.computeIfAbsent(
+							serialNumber,
+							k -> new HashMap<>()
+						)
+						.put(
+							assoc.station,
+							CLIENT_STEERING_ACTIONS.STEER_DOWN
+								.name()
+						);
+				}
+			}
+			// otherwise, do nothing
+		}
+	}
+}

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/clientsteering/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Client steering algorithms.
+ */
+package com.facebook.openwifi.rrm.optimizers.clientsteering;

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/package-info.java

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * RRM algorithm implementations.
+ *
+ * @see com.facebook.openwifi.rrm.RRMAlgorithm
+ */
+package com.facebook.openwifi.rrm.optimizers;

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/tpc/LocationBasedOptimalTPC.java

@@ -18,9 +18,9 @@ import java.util.stream.Collectors;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.facebook.openwifi.cloudsdk.models.ap.State;
 import com.facebook.openwifi.rrm.DeviceConfig;
 import com.facebook.openwifi.rrm.DeviceDataManager;
+import com.facebook.openwifi.cloudsdk.models.ap.State;
 import com.facebook.openwifi.rrm.modules.Modeler.DataModel;
 import com.facebook.openwifi.rrm.modules.ModelerUtils;
 
@@ -175,7 +175,7 @@ public class LocationBasedOptimalTPC extends TPC {
 		// Filter out the invalid APs (e.g., no radio, no location data)
 		// Update txPowerChoices, boundary, apLocX, apLocY for the optimization
 		for (String serialNumber : serialNumbers) {
-			List<State> states = model.latestStates.get(serialNumber);
+			List<? extends State> states = model.latestStates.get(serialNumber);
 			State state = states.get(states.size() - 1);
 
 			// Ignore the device if its radio is not active

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/tpc/MeasurementBasedApApTPC.java

@@ -24,6 +24,7 @@ import com.facebook.openwifi.cloudsdk.UCentralUtils;
 import com.facebook.openwifi.cloudsdk.WifiScanEntry;
 import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
 import com.facebook.openwifi.cloudsdk.models.ap.State;
+import com.facebook.openwifi.cloudsdk.StateInfo;
 import com.facebook.openwifi.rrm.DeviceDataManager;
 import com.facebook.openwifi.rrm.modules.Modeler.DataModel;
 import com.facebook.openwifi.rrm.modules.ModelerUtils;
@@ -156,8 +157,10 @@ public class MeasurementBasedApApTPC extends TPC {
 	 */
 	protected static Set<String> getManagedBSSIDs(DataModel model) {
 		Set<String> managedBSSIDs = new HashSet<>();
-		for (Map.Entry<String, List<State>> e : model.latestStates.entrySet()) {
+		for (
-			List<State> states = e.getValue();
+			Map.Entry<String, List<StateInfo>> e : model.latestStates.entrySet()
+		) {
+			List<StateInfo> states = e.getValue();
 			State state = states.get(states.size() - 1);
 			if (state.interfaces == null) {
 				continue;
@@ -322,7 +325,7 @@ public class MeasurementBasedApApTPC extends TPC {
 			buildRssiMap(managedBSSIDs, model.latestWifiScans, band);
 		logger.debug("Starting TPC for the {} band", band);
 		for (String serialNumber : serialNumbers) {
-			List<State> states = model.latestStates.get(serialNumber);
+			List<? extends State> states = model.latestStates.get(serialNumber);
 			State state = states.get(states.size() - 1);
 			if (
 				state == null || state.radios == null ||

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/tpc/MeasurementBasedApClientTPC.java

@@ -20,6 +20,7 @@ import org.slf4j.LoggerFactory;
 
 import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
 import com.facebook.openwifi.cloudsdk.UCentralUtils;
+import com.facebook.openwifi.cloudsdk.StateInfo;
 import com.facebook.openwifi.cloudsdk.models.ap.State;
 import com.facebook.openwifi.rrm.DeviceDataManager;
 import com.facebook.openwifi.rrm.modules.Modeler.DataModel;
@@ -293,9 +294,11 @@ public class MeasurementBasedApClientTPC extends TPC {
 	public Map<String, Map<String, Integer>> computeTxPowerMap() {
 		Map<String, Map<String, Integer>> txPowerMap = new TreeMap<>();
 
-		for (Map.Entry<String, List<State>> e : model.latestStates.entrySet()) {
+		for (
+			Map.Entry<String, List<StateInfo>> e : model.latestStates.entrySet()
+		) {
 			String serialNumber = e.getKey();
-			List<State> states = e.getValue();
+			List<StateInfo> states = e.getValue();
 			State state = states.get(states.size() - 1);
 			if (state.radios == null || state.radios.length == 0) {
 				logger.debug(

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/tpc/TPC.java

@@ -22,6 +22,7 @@ import org.slf4j.LoggerFactory;
 
 import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
 import com.facebook.openwifi.cloudsdk.models.ap.State;
+import com.facebook.openwifi.cloudsdk.StateInfo;
 import com.facebook.openwifi.rrm.DeviceConfig;
 import com.facebook.openwifi.rrm.DeviceDataManager;
 import com.facebook.openwifi.rrm.modules.ConfigManager;
@@ -186,9 +187,11 @@ public abstract class TPC {
 	 */
 	protected Map<String, Map<Integer, List<String>>> getApsPerChannel() {
 		Map<String, Map<Integer, List<String>>> apsPerChannel = new TreeMap<>();
-		for (Map.Entry<String, List<State>> e : model.latestStates.entrySet()) {
+		for (
+			Map.Entry<String, List<StateInfo>> e : model.latestStates.entrySet()
+		) {
 			String serialNumber = e.getKey();
-			List<State> states = e.getValue();
+			List<StateInfo> states = e.getValue();
 			State state = states.get(states.size() - 1);
 
 			if (state.radios == null || state.radios.length == 0) {

owrrm/src/main/java/com/facebook/openwifi/rrm/optimizers/tpc/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Transmit power control (TPC) algorithms.
+ */
+package com.facebook.openwifi.rrm.optimizers.tpc;

owrrm/src/main/java/com/facebook/openwifi/rrm/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Radio Resource Management (RRM) service.
+ */
+package com.facebook.openwifi.rrm;

owrrm/src/main/java/com/facebook/openwifi/rrm/rca/RCAConfig.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.rrm.rca;
+
+import java.util.Map;
+
+/**
+ * Root cause analysis service configuration model.
+ */
+public class RCAConfig {
+	//
+	// NOTE:
+	// Currently assumes RCA is embedded in the RRM service and does NOT
+	// duplicate SDK-related fields.
+	//
+
+	/**
+	 * StationPinger parameters.
+	 */
+	public class StationPingerParams {
+		/**
+		 * How often to ping each station, in seconds (or 0 to disable)
+		 * ({@code STATIONPINGERPARAMS_PINGINTERVALSEC})
+		 */
+		// NOTE: cannot be shorter than Kafka "state" publish interval
+		public int pingIntervalSec = 0 /* TODO enable by default */;
+
+		/**
+		 * The number of pings to send to each station
+		 * ({@code STATIONPINGERPARAMS_PINGCOUNT})
+		 */
+		public int pingCount = 5;
+
+		/**
+		 * Ignore state records older than this interval (in ms)
+		 * ({@code STATIONPINGERPARAMS_STALESTATETHRESHOLDMS})
+		 */
+		// NOTE: should not be longer than Kafka "state" publish interval
+		public int staleStateThresholdMs = 300000; // 5 min
+
+		/**
+		 * Number of executor threads for ping tasks
+		 * ({@code STATIONPINGERPARAMS_EXECUTORTHREADCOUNT})
+		 */
+		public int executorThreadCount = 3;
+	}
+
+	/** StationPinger parameters. */
+	public StationPingerParams stationPingerParams = new StationPingerParams();
+
+	/** Construct RCAConfig from environment variables. */
+	public static RCAConfig fromEnv(Map<String, String> env) {
+		RCAConfig config = new RCAConfig();
+		String v;
+
+		// @formatter:off
+
+		/* StationPingerParams */
+		StationPingerParams stationPingerParams = config.stationPingerParams;
+		if ((v = env.get("STATIONPINGERPARAMS_PINGINTERVALSEC")) != null) {
+			stationPingerParams.pingIntervalSec = Integer.parseInt(v);
+		}
+		if ((v = env.get("STATIONPINGERPARAMS_PINGCOUNT")) != null) {
+			stationPingerParams.pingCount = Integer.parseInt(v);
+		}
+		if ((v = env.get("STATIONPINGERPARAMS_STALESTATETHRESHOLDMS")) != null) {
+			stationPingerParams.staleStateThresholdMs = Integer.parseInt(v);
+		}
+		if ((v = env.get("STATIONPINGERPARAMS_EXECUTORTHREADCOUNT")) != null) {
+			stationPingerParams.executorThreadCount = Integer.parseInt(v);
+		}
+
+		// @formatter:on
+
+		return config;
+	}
+}

owrrm/src/main/java/com/facebook/openwifi/rrm/rca/RCAUtils.java

@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.rrm.rca;
+
+import com.facebook.openwifi.cloudsdk.UCentralClient;
+import com.facebook.openwifi.cloudsdk.UCentralUtils;
+import com.facebook.openwifi.cloudsdk.models.gw.CommandInfo;
+
+/**
+ * Utilities for root cause analysis.
+ */
+public class RCAUtils {
+	/** Ping result, only containing a data summary (not individual pings). */
+	public static class PingResult {
+		// NOTE: fields are taken directly from ping output
+		/** Minimum ping RTT (ms) */
+		public double min;
+		/** Average ping RTT (ms) */
+		public double avg;
+		/** Maximum ping RTT (ms) */
+		public double max;
+		/** Standard deviation of ping RTT measurements (ms) */
+		public double mdev;
+		// TODO other stats? (ex. tx/rx packets, % packet loss)
+
+		@Override
+		public String toString() {
+			return String.format("%.3f/%.3f/%.3f/%.3f ms", min, avg, max, mdev);
+		}
+	}
+
+	/**
+	 * Parse raw ping output, returning null upon error.
+	 *
+	 * This only supports the busybox ping format.
+	 */
+	private static PingResult parsePingOutput(String output) {
+		// Only parse summary line (should be last line in output).
+		// Code below is optimized for minimal string operations.
+		//
+		// Examples of supported formats:
+		//   round-trip min/avg/max = 4.126/42.470/84.081 ms
+		//   rtt min/avg/max/mdev = 16.853/20.114/23.375/3.261 ms
+		final String SUMMARY_TEXT_3 = "min/avg/max";
+		int idx = output.lastIndexOf(SUMMARY_TEXT_3);
+		if (idx != -1) {
+			idx += SUMMARY_TEXT_3.length();
+		} else {
+			final String SUMMARY_TEXT_4 = "min/avg/max/mdev";
+			idx = output.lastIndexOf(SUMMARY_TEXT_4);
+			if (idx != -1) {
+				idx += SUMMARY_TEXT_4.length();
+			} else {
+				return null;
+			}
+		}
+		PingResult result = null;
+		for (; idx < output.length(); idx++) {
+			if (Character.isDigit(output.charAt(idx))) {
+				break;
+			}
+		}
+		if (idx < output.length()) {
+			int endIdx = output.indexOf(' ', idx);
+			if (endIdx != -1) {
+				String s = output.substring(idx, endIdx);
+				String[] tokens = s.split("/");
+				if (tokens.length == 3) {
+					result = new PingResult();
+					result.min = Double.parseDouble(tokens[0]);
+					result.avg = Double.parseDouble(tokens[1]);
+					result.max = Double.parseDouble(tokens[2]);
+				} else if (tokens.length == 4) {
+					result = new PingResult();
+					result.min = Double.parseDouble(tokens[0]);
+					result.avg = Double.parseDouble(tokens[1]);
+					result.max = Double.parseDouble(tokens[2]);
+					result.mdev = Double.parseDouble(tokens[3]);
+				}
+			}
+		}
+		return result;
+	}
+
+	/**
+	 * Instruct a device (AP) to ping a given destination (IP/hostname),
+	 * returning the raw ping output or null upon error.
+	 *
+	 * @param client the UCentralClient instance
+	 * @param serialNumber the device (AP) serial number
+	 * @param host the ping destination
+	 * @param pingCount the number of pings to send
+	 * @return the ping output, or null upon error
+	 */
+	public static PingResult pingFromDevice(
+		UCentralClient client,
+		String serialNumber,
+		String host,
+		int pingCount
+	) {
+		if (pingCount < 1) {
+			throw new IllegalArgumentException("Invalid pingCount < 1");
+		}
+		String script = String.format("ping -c %d %s", pingCount, host);
+		int timeoutSec = pingCount /* time buffer as follows: */ * 2 + 10;
+		CommandInfo info = client.runScript(serialNumber, script, timeoutSec);
+		String output = UCentralUtils.getScriptOutput(info);
+		return output != null ? parsePingOutput(output) : null;
+	}
+}

owrrm/src/main/java/com/facebook/openwifi/rrm/rca/modules/StationPinger.java

@@ -0,0 +1,269 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.rrm.rca.modules;
+
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.facebook.openwifi.cloudsdk.UCentralClient;
+import com.facebook.openwifi.cloudsdk.UCentralUtils;
+import com.facebook.openwifi.cloudsdk.kafka.UCentralKafkaConsumer;
+import com.facebook.openwifi.cloudsdk.kafka.UCentralKafkaConsumer.KafkaRecord;
+import com.facebook.openwifi.cloudsdk.models.ap.State;
+import com.facebook.openwifi.cloudsdk.models.gw.ServiceEvent;
+import com.facebook.openwifi.rrm.Utils;
+import com.facebook.openwifi.rrm.rca.RCAConfig.StationPingerParams;
+import com.facebook.openwifi.rrm.rca.RCAUtils;
+import com.facebook.openwifi.rrm.rca.RCAUtils.PingResult;
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonSyntaxException;
+
+/**
+ * Ping service to measure latency/jitter between Wi-Fi APs and clients
+ * (stations).
+ * <p>
+ * This class subscribes to the Kafka "state" topic to retrieve the list of APs
+ * with connected clients, then issues ping commands for each (AP, STA) pair at
+ * a given frequency. All actions are submitted to an executor during Kafka
+ * callbacks.
+ */
+public class StationPinger {
+	private static final Logger logger =
+		LoggerFactory.getLogger(StationPinger.class);
+
+	/** The module parameters. */
+	private final StationPingerParams params;
+
+	/** The uCentral client. */
+	private final UCentralClient uCentralClient;
+
+	/** The executor service instance. */
+	private final ExecutorService executor;
+
+	/** The Gson instance. */
+	private final Gson gson = new Gson();
+
+	/**
+	 * Map from device (serial number) to the latest map of STAs
+	 * (i.e. client MAC address to Client structure).
+	 */
+	private Map<String, Map<String, State.Interface.Client>> deviceToClients =
+		new ConcurrentHashMap<>();
+
+	/**
+	 * Map of last ping timestamps, keyed on
+	 * {@link #getDeviceKey(String, String)}.
+	 */
+	private Map<String, Long> lastPingTsMap = new ConcurrentHashMap<>();
+
+	/** Constructor. */
+	public StationPinger(
+		StationPingerParams params,
+		UCentralClient uCentralClient,
+		UCentralKafkaConsumer consumer
+	) {
+		this.params = params;
+		this.uCentralClient = uCentralClient;
+		this.executor =
+			Executors.newFixedThreadPool(
+				params.executorThreadCount,
+				new Utils.NamedThreadFactory(
+					"RCA_" + this.getClass().getSimpleName()
+				)
+			);
+
+		if (params.pingIntervalSec < 1) {
+			logger.info("StationPinger is disabled");
+			return; // quit before registering listeners
+		}
+
+		// Register Kafka listener
+		if (consumer != null) {
+			consumer.addKafkaListener(
+				getClass().getSimpleName(),
+				new UCentralKafkaConsumer.KafkaListener() {
+					@Override
+					public void handleStateRecords(List<KafkaRecord> records) {
+						handleKafkaStateRecords(records);
+					}
+
+					@Override
+					public void handleWifiScanRecords(
+						List<KafkaRecord> records
+					) { /* ignored */ }
+
+					@Override
+					public void handleServiceEventRecords(
+						List<ServiceEvent> serviceEventRecords
+					) { /* ignored */ }
+				}
+			);
+		}
+	}
+
+	/** Process the list of received State records. */
+	private void handleKafkaStateRecords(List<KafkaRecord> records) {
+		long now = System.currentTimeMillis();
+		for (KafkaRecord record : records) {
+			// Drop old records
+			if (now - record.timestampMs > params.staleStateThresholdMs) {
+				logger.debug(
+					"Dropping old state record for {} at time {}",
+					record.serialNumber,
+					record.timestampMs
+				);
+				continue;
+			}
+
+			// Deserialize State
+			JsonObject state = record.payload.getAsJsonObject("state");
+			if (state == null) {
+				continue;
+			}
+			try {
+				State stateModel = gson.fromJson(state, State.class);
+				Map<String, State.Interface.Client> clientMap =
+					UCentralUtils.getWifiClientInfo(stateModel);
+				if (
+					deviceToClients.put(record.serialNumber, clientMap) == null
+				) {
+					// Enqueue this device
+					final String serialNumber = record.serialNumber;
+					executor.submit(() -> pingDevices(serialNumber));
+				}
+			} catch (JsonSyntaxException e) {
+				logger.error(
+					String.format(
+						"Device %s: failed to deserialize state: %s",
+						record.serialNumber,
+						state
+					),
+					e
+				);
+			}
+		}
+	}
+
+	/** Shut down all resources. */
+	public void shutdown() {
+		executor.shutdownNow();
+	}
+
+	/**
+	 * Issue ping commands to all clients of a given AP.
+	 *
+	 * Note that this is intentionally NOT parallelized to avoid collisions
+	 * while transmitting to/from multiple clients of the same AP.
+	 */
+	private void pingDevices(String serialNumber) {
+		Map<String, State.Interface.Client> clientMap =
+			deviceToClients.get(serialNumber);
+		if (clientMap == null) {
+			return; // shouldn't happen
+		}
+
+		logger.trace(
+			"{}: Pinging all clients ({} total)...",
+			serialNumber,
+			clientMap.size()
+		);
+		final long PING_INTERVAL_NS =
+			Math.max(params.pingIntervalSec, 1) * 1_000_000_000L;
+		for (
+			Map.Entry<String, State.Interface.Client> entry : clientMap
+				.entrySet()
+		) {
+			String mac = entry.getKey();
+			String host = getClientAddress(entry.getValue());
+			if (host == null) {
+				logger.debug(
+					"{}: client {} has no pingable address",
+					serialNumber,
+					mac
+				);
+				continue;
+			}
+
+			// Check backoff timer
+			long now = System.nanoTime();
+			String deviceKey = getDeviceKey(serialNumber, mac);
+			Long lastPingTs = lastPingTsMap.putIfAbsent(deviceKey, now);
+			if (lastPingTs != null && now - lastPingTs < PING_INTERVAL_NS) {
+				logger.trace(
+					"{}: Skipping ping for {} (last pinged {}s ago)",
+					serialNumber,
+					mac,
+					(now - lastPingTs) / 1_000_000_000L
+				);
+				continue;
+			}
+			lastPingTsMap.put(deviceKey, now);
+
+			// Issue ping command
+			logger.debug(
+				"{}: Pinging client {} ({})",
+				serialNumber,
+				mac,
+				host
+			);
+			PingResult result = RCAUtils
+				.pingFromDevice(
+					uCentralClient,
+					serialNumber,
+					host,
+					params.pingCount
+				);
+			if (result == null) {
+				logger.debug(
+					"Ping failed from {} to {} ({})",
+					serialNumber,
+					mac,
+					host
+				);
+				continue;
+			}
+			// TODO handle results
+			logger.info(
+				"Ping result from {} to {} ({}): {}",
+				serialNumber,
+				mac,
+				host,
+				result.toString()
+			);
+		}
+
+		// Remove map entries after we process them
+		deviceToClients.remove(serialNumber);
+	}
+
+	/** Return an address to ping for the given client. */
+	private String getClientAddress(State.Interface.Client client) {
+		if (client.ipv4_addresses.length > 0) {
+			return client.ipv4_addresses[0];
+		} else if (client.ipv6_addresses.length > 0) {
+			return client.ipv6_addresses[0];
+		} else {
+			return null;
+		}
+	}
+
+	/** Return a key to use in {@link #lastPingTsMap}. */
+	private String getDeviceKey(String serialNumber, String sta) {
+		// Use (AP, STA) pair as the key to handle STAs moving between APs
+		// TODO - do we care about radio/band/channel changes too?
+		return serialNumber + '\0' + sta;
+	}
+}

owrrm/src/main/java/com/facebook/openwifi/rrm/rca/package-info.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Root Cause Analysis (RCA) service.
+ */
+package com.facebook.openwifi.rrm.rca;

owrrm/src/test/java/com/facebook/openwifi/rrm/modules/ModelerUtilsTest.java

@@ -23,8 +23,8 @@ import java.util.Map;
 import org.junit.jupiter.api.Test;
 
 import com.facebook.openwifi.cloudsdk.AggregatedState;
+import com.facebook.openwifi.cloudsdk.StateInfo;
 import com.facebook.openwifi.cloudsdk.WifiScanEntry;
-import com.facebook.openwifi.cloudsdk.models.ap.State;
 import com.facebook.openwifi.rrm.aggregators.MeanAggregator;
 import com.facebook.openwifi.rrm.modules.Modeler.DataModel;
 import com.facebook.openwifi.rrm.optimizers.TestUtils;
@@ -615,7 +615,7 @@ public class ModelerUtilsTest {
 			new ArrayList<>(Arrays.asList(aggStateC))
 		);
 
-		State toBeAggregated1 = TestUtils.createState(
+		StateInfo toBeAggregated1 = TestUtils.createState(
 			6,
 			20,
 			10,
@@ -628,27 +628,46 @@ public class ModelerUtilsTest {
 		ModelerUtils
 			.addStateToAggregation(bssidToAggregatedStates, toBeAggregated1);
 
-		assertEquals(
+		List<Integer> rssiList = new ArrayList<>();
-			bssidToAggregatedStates
+		for (
+			AggregatedState.AssociationInfo associationInfo : bssidToAggregatedStates
 				.get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1))
-				.get(0).rssi,
+				.get(0).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
+		assertEquals(
+			rssiList,
 			Arrays.asList(10, 20, 30)
 		);
 
-		assertEquals(
+		rssiList = new ArrayList<>();
-			bssidToAggregatedStates
+		for (
+			AggregatedState.AssociationInfo associationInfo : bssidToAggregatedStates
 				.get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1))
-				.get(1).rssi,
+				.get(1).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
+		assertEquals(
+			rssiList,
 			Arrays.asList(40, 50)
 		);
-		assertEquals(
+
-			bssidToAggregatedStates
+		rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : bssidToAggregatedStates
 				.get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2))
-				.get(0).rssi,
+				.get(0).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
+		assertEquals(
+			rssiList,
 			Arrays.asList(20, 30, 40, 60)
 		);
 
-		State toBeAggregated2 = TestUtils.createState(
+		StateInfo toBeAggregated2 = TestUtils.createState(
 			11,
 			20,
 			20,
@@ -659,10 +678,17 @@ public class ModelerUtilsTest {
 		);
 		ModelerUtils
 			.addStateToAggregation(bssidToAggregatedStates, toBeAggregated2);
-		assertEquals(
+
-			bssidToAggregatedStates
+		rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : bssidToAggregatedStates
 				.get(ModelerUtils.getBssidStationKeyPair(bssidB, stationB))
-				.get(0).rssi,
+				.get(0).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
+		assertEquals(
+			rssiList,
 			Arrays.asList(10, 20, 30, 40)
 		);
 	}
@@ -688,7 +714,7 @@ public class ModelerUtilsTest {
 		DataModel dataModel = new DataModel();
 
 		// This serie of StateA is used to test a valid input states.
-		State time1StateA = TestUtils.createState(
+		StateInfo time1StateA = TestUtils.createState(
 			1,
 			80,
 			10,
@@ -704,7 +730,7 @@ public class ModelerUtilsTest {
 			TestUtils.DEFAULT_LOCAL_TIME
 		);
 
-		State time2StateA = TestUtils.createState(
+		StateInfo time2StateA = TestUtils.createState(
 			1,
 			80,
 			10,
@@ -721,7 +747,7 @@ public class ModelerUtilsTest {
 		);
 
 		//As State time3StateA is obsolete, it should not be aggregated.
-		State time3StateA = TestUtils.createState(
+		StateInfo time3StateA = TestUtils.createState(
 			1,
 			80,
 			10,
@@ -758,48 +784,98 @@ public class ModelerUtilsTest {
 			2
 		);
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1)).get(0).radio,
+			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1)).get(0).radioConfig,
-			new AggregatedState.Radio(1, 80, 10)
+			new AggregatedState.RadioConfig(1, 80, 10)
 		);
+
+		List<Integer> rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : aggregatedMap
+				.get(serialNumberA)
+				.get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1))
+				.get(0).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1)).get(0).rssi,
+			rssiList,
 			Arrays.asList(-84, 27)
 		);
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1)).get(1).radio,
+			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1)).get(1).radioConfig,
-			new AggregatedState.Radio(6, 40, 20)
+			new AggregatedState.RadioConfig(6, 40, 20)
 		);
+
+		rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : aggregatedMap
+				.get(serialNumberA)
+				.get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1))
+				.get(1).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA1)).get(1).rssi,
+			rssiList,
 			Arrays.asList(-80)
 		);
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2)).get(0).radio,
+			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2)).get(0).radioConfig,
-			new AggregatedState.Radio(1, 80, 10)
+			new AggregatedState.RadioConfig(1, 80, 10)
 		);
+
+		rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : aggregatedMap
+				.get(serialNumberA)
+				.get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2))
+				.get(0).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2)).get(0).rssi,
+			rssiList,
 			Arrays.asList(-67, -67)
 		);
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2)).get(1).radio,
+			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2)).get(1).radioConfig,
-			new AggregatedState.Radio(6, 40, 20)
+			new AggregatedState.RadioConfig(6, 40, 20)
 		);
+
+		rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : aggregatedMap
+				.get(serialNumberA)
+				.get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2))
+				.get(1).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA2)).get(1).rssi,
+			rssiList,
 			Arrays.asList(180, 67)
 		);
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA3)).get(0).radio,
+			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA3)).get(0).radioConfig,
-			new AggregatedState.Radio(1, 80, 10)
+			new AggregatedState.RadioConfig(1, 80, 10)
 		);
+
+		rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : aggregatedMap
+				.get(serialNumberA)
+				.get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA3))
+				.get(0).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
 		assertEquals(
-			aggregatedMap.get(serialNumberA).get(ModelerUtils.getBssidStationKeyPair(bssidA, stationA3)).get(0).rssi,
+			rssiList,
 			Arrays.asList(10, 100)
 		);
 
 		// Test more clients operate on the same channel (stationB and stationA)
-		State time1StateB = TestUtils.createState(
+		StateInfo time1StateB = TestUtils.createState(
 			1,
 			80,
 			10,
@@ -812,7 +888,7 @@ public class ModelerUtilsTest {
 			.computeIfAbsent(serialNumberB, k -> new ArrayList<>())
 			.add(time1StateB);
 
-		State time1StateC = TestUtils.createState(
+		StateInfo time1StateC = TestUtils.createState(
 			6,
 			40,
 			20,
@@ -829,12 +905,32 @@ public class ModelerUtilsTest {
 			ModelerUtils
 				.getAggregatedStates(dataModel, obsoletionPeriodMs, refTimeMs);
 
+		rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : aggregatedMap2
+				.get(serialNumberB)
+				.get(ModelerUtils.getBssidStationKeyPair(bssidB, stationB))
+				.get(0).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
 		assertEquals(
-			aggregatedMap2.get(serialNumberB).get(ModelerUtils.getBssidStationKeyPair(bssidB, stationB)).get(0).rssi, Arrays.asList(-30)
+			rssiList,
+			Arrays.asList(-30)
 		);
 
+		rssiList = new ArrayList<>();
+		for (
+			AggregatedState.AssociationInfo associationInfo : aggregatedMap2
+				.get(serialNumberC)
+				.get(ModelerUtils.getBssidStationKeyPair(bssidC, stationC))
+				.get(0).associationInfoList
+		) {
+			rssiList.add(associationInfo.rssi);
+		}
 		assertEquals(
-			aggregatedMap2.get(serialNumberC).get(ModelerUtils.getBssidStationKeyPair(bssidC, stationC)).get(0).rssi, Arrays.asList(-100)
+			rssiList,
+			Arrays.asList(-100)
 		);
 
 		assertEquals(

owrrm/src/test/java/com/facebook/openwifi/rrm/modules/ProvMonitorTest.java

@@ -24,6 +24,7 @@ public class ProvMonitorTest {
 	private DeviceDataManager deviceDataManager;
 
 	/** Test provisioning monitor. */
+	@SuppressWarnings("unused")
 	private ProvMonitor provMonitor;
 
 	@BeforeEach

owrrm/src/test/java/com/facebook/openwifi/rrm/optimizers/TestUtils.java

@@ -19,15 +19,17 @@ import java.util.TreeSet;
 import java.util.stream.Collectors;
 
 import com.facebook.openwifi.cloudsdk.AggregatedState;
+import com.facebook.openwifi.cloudsdk.StateInfo;
 import com.facebook.openwifi.cloudsdk.UCentralConstants;
 import com.facebook.openwifi.cloudsdk.UCentralUtils;
 import com.facebook.openwifi.cloudsdk.WifiScanEntry;
 import com.facebook.openwifi.cloudsdk.models.ap.Capabilities;
 import com.facebook.openwifi.cloudsdk.models.ap.State;
+import com.facebook.openwifi.cloudsdk.models.ap.UCentralSchema;
 import com.facebook.openwifi.rrm.DeviceTopology;
 import com.google.gson.Gson;
-import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
 
 public class TestUtils {
 	/** The Gson instance. */
@@ -104,34 +106,33 @@ public class TestUtils {
 	 * @param band band (e.g., "2G")
 	 * @param channel channel number
 	 * @param channelWidth channel width in MHz
-	 * @return a radio info object as a {@code JsonObject}
+	 * @return a radio info object as a {@code UCentralSchema.Radio}
 	 */
-	private static JsonObject createDeviceStatusRadioObject(
+	private static UCentralSchema.Radio createDeviceStatusRadioObject(
 		String band,
 		int channel,
 		int channelWidth,
 		int txPower
 	) {
-		return gson.fromJson(
+		UCentralSchema.Radio radio = new UCentralSchema.Radio();
-			String.format(
+		radio.band = band;
-				"{\"band\": %s,\"channel\": %d,\"channel-mode\":\"HE\"," +
+		radio.channel = new JsonPrimitive(channel);
-					"\"channel-width\":%d,\"country\":\"CA\",\"tx-power\":%d}",
+		radio.channelMode = "HE";
-				band,
+		radio.channelWidth = channelWidth;
-				channel,
+		radio.country = "CA";
-				channelWidth,
+		radio.txPower = txPower;
-				txPower
+		return radio;
-			),
-			JsonObject.class
-		);
 	}
 
 	/**
 	 * Create an array with one radio info entry with the given channel on a
 	 * given band.
 	 */
-	public static JsonArray createDeviceStatus(String band, int channel) {
+	public static List<UCentralSchema.Radio> createDeviceStatus(
-		JsonArray jsonList = new JsonArray();
+		String band,
-		jsonList.add(
+		int channel
+	) {
+		return Arrays.asList(
 			createDeviceStatusRadioObject(
 				band,
 				channel,
@@ -139,7 +140,6 @@ public class TestUtils {
 				DEFAULT_TX_POWER
 			)
 		);
-		return jsonList;
 	}
 
 	/**
@@ -151,13 +151,12 @@ public class TestUtils {
 	 * @return an array with one radio info entry with the given band, channel,
 	 *         and tx power
 	 */
-	public static JsonArray createDeviceStatus(
+	public static List<UCentralSchema.Radio> createDeviceStatus(
 		String band,
 		int channel,
 		int txPower
 	) {
-		JsonArray jsonList = new JsonArray();
+		return Arrays.asList(
-		jsonList.add(
 			createDeviceStatusRadioObject(
 				band,
 				channel,
@@ -165,39 +164,36 @@ public class TestUtils {
 				txPower
 			)
 		);
-		return jsonList;
 	}
 
 	/**
 	 * Create an array with one radio info entry per given band (using the
 	 * lowest channel).
 	 */
-	public static JsonArray createDeviceStatus(List<String> bands) {
+	public static List<UCentralSchema.Radio> createDeviceStatus(
-		JsonArray jsonList = new JsonArray();
+		List<String> bands
-		for (String band : bands) {
+	) {
-			int channel = UCentralUtils.getLowerChannelLimit(band);
+		return bands.stream()
-			jsonList.add(
+			.map(
-				createDeviceStatusRadioObject(
+				band -> createDeviceStatusRadioObject(
 					band,
-					channel,
+					UCentralUtils.getLowerChannelLimit(band),
 					DEFAULT_CHANNEL_WIDTH,
 					DEFAULT_TX_POWER
 				)
-			);
+			)
-		}
+			.collect(Collectors.toList());
-		return jsonList;
 	}
 
 	/**
 	 * Create an array with one radio info entry with the given tx power and
 	 * channel.
 	 */
-	public static JsonArray createDeviceStatusSingleBand(
+	public static List<UCentralSchema.Radio> createDeviceStatusSingleBand(
 		int channel,
 		int txPower2G
 	) {
-		JsonArray jsonList = new JsonArray();
+		return Arrays.asList(
-		jsonList.add(
 			createDeviceStatusRadioObject(
 				channelToLowestMatchingBand(channel),
 				channel,
@@ -205,29 +201,25 @@ public class TestUtils {
 				txPower2G
 			)
 		);
-		return jsonList;
 	}
 
 	/**
 	 * Create an array with two radio info entries (2G and 5G), with the given
 	 * tx powers and channels.
 	 */
-	public static JsonArray createDeviceStatusDualBand(
+	public static List<UCentralSchema.Radio> createDeviceStatusDualBand(
 		int channel2G,
 		int txPower2G,
 		int channel5G,
 		int txPower5G
 	) {
-		JsonArray jsonList = new JsonArray();
+		return Arrays.asList(
-		jsonList.add(
 			createDeviceStatusRadioObject(
 				UCentralConstants.BAND_2G,
 				channel2G,
 				DEFAULT_CHANNEL_WIDTH,
 				txPower2G
-			)
+			),
-		);
-		jsonList.add(
 			createDeviceStatusRadioObject(
 				UCentralConstants.BAND_5G,
 				channel5G,
@@ -235,7 +227,6 @@ public class TestUtils {
 				txPower5G
 			)
 		);
-		return jsonList;
 	}
 
 	/** Create a wifi scan entry with the given channel. */
@@ -535,7 +526,7 @@ public class TestUtils {
 	 * @param localtime unix timestamp in seconds.
 	 * @return the state of an AP with radios described by the given parameters
 	 */
-	public static State createState(
+	public static StateInfo createState(
 		int[] channels,
 		int[] channelWidths,
 		int[] txPowers,
@@ -556,13 +547,13 @@ public class TestUtils {
 			);
 		}
 		final int numRadios = channels.length;
-		State state = new State();
+		StateInfo state = new StateInfo();
-		state.interfaces = new State.Interface[numRadios + 1];
+		state.interfaces = new StateInfo.Interface[numRadios + 1];
 		for (int index = 0; index < numRadios; index++) {
 			state.interfaces[index] = createUpStateInterface(index);
 		}
 		state.interfaces[numRadios] = createDownStateInterface(numRadios);
-		state.radios = new State.Radio[numRadios];
+		state.radios = new StateInfo.Radio[numRadios];
 		for (int i = 0; i < numRadios; i++) {
 			state.radios[i] = createStateRadio(i);
 			state.radios[i].channel = channels[i];
@@ -570,10 +561,10 @@ public class TestUtils {
 			state.radios[i].tx_power = txPowers[i];
 			state.interfaces[i].ssids[0].bssid = bssids[i];
 			state.interfaces[i].ssids[0].associations =
-				new State.Interface.SSID.Association[clientRssis[i].length];
+				new StateInfo.Interface.SSID.Association[clientRssis[i].length];
 			for (int j = 0; j < clientRssis[i].length; j++) {
 				state.interfaces[i].ssids[0].associations[j] =
-					new State.Interface.SSID.Association();
+					new StateInfo.Interface.SSID.Association();
 				state.interfaces[i].ssids[0].associations[j].rssi =
 					clientRssis[i][j];
 				state.interfaces[i].ssids[0].associations[j].station =
@@ -599,7 +590,7 @@ public class TestUtils {
 	 * @param localtime unix timestamp in seconds.
 	 * @return the state of an AP with one radio
 	 */
-	public static State createState(
+	public static StateInfo createState(
 		int channel,
 		int channelWidth,
 		int txPower,
@@ -627,7 +618,7 @@ public class TestUtils {
 	 * @param bssid bssid
 	 * @return the state of an AP with one radio
 	 */
-	public static State createState(
+	public static StateInfo createState(
 		int channel,
 		int channelWidth,
 		String bssid
@@ -644,7 +635,7 @@ public class TestUtils {
 	 * @param bssid bssid
 	 * @return the state of an AP with one radio
 	 */
-	public static State createState(
+	public static StateInfo createState(
 		int channel,
 		int channelWidth,
 		int txPower,
@@ -669,7 +660,7 @@ public class TestUtils {
 	 * @param clientRssis array of client RSSIs
 	 * @return the state of an AP with one radio
 	 */
-	public static State createState(
+	public static StateInfo createState(
 		int channel,
 		int channelWidth,
 		int txPower,
@@ -700,7 +691,7 @@ public class TestUtils {
 	 * @param bssidB bssid for radio on channelB
 	 * @return the state of an AP with two radios
 	 */
-	public static State createState(
+	public static StateInfo createState(
 		int channelA,
 		int channelWidthA,
 		int txPowerA,
@@ -737,7 +728,7 @@ public class TestUtils {
 	* @param localtime local time for the State
 	* @return the state of an AP with two radios
 	*/
-	public static State createState(
+	public static StateInfo createState(
 		int channelA,
 		int channelWidthA,
 		int txPowerA,
@@ -823,11 +814,15 @@ public class TestUtils {
 		int[] clientRssi
 	) {
 		AggregatedState state = new AggregatedState();
-		state.radio = new AggregatedState.Radio(channel, channelWidth, txPower);
+		state.radioConfig =
+			new AggregatedState.RadioConfig(channel, channelWidth, txPower);
 		state.bssid = bssid;
 		state.station = station;
+		state.associationInfoList = new ArrayList<>();
 		for (int rssi : clientRssi) {
-			state.rssi.add(rssi);
+			AggregatedState.AssociationInfo associationInfo =
+				new AggregatedState.AssociationInfo(rssi);
+			state.associationInfoList.add(associationInfo);
 		}
 		return state;
 	}

owrrm/src/test/java/com/facebook/openwifi/rrm/optimizers/clientsteering/ClientSteeringStateTest.java

@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.rrm.optimizers.clientsteering;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.Test;
+
+public class ClientSteeringStateTest {
+
+	@Test
+	void testRegisterAndCheckBackoff() {
+		final String apA = "aaaaaaaaaaaa";
+		final String clientA1 = "1a:aa:aa:aa:aa:aa";
+		final String clientA2 = "2a:aa:aa:aa:aa:aa";
+		final String apB = "bbbbbbbbbbbb";
+		final String clientB = "1b:bb:bb:bb:bb:bb";
+
+		final long currentTimeNs = System.nanoTime();
+		final long bufferTimeNs = 60_000_000_000L; // 1 min
+
+		ClientSteeringState clientSteeringState = new ClientSteeringState();
+
+		// first attempt should register
+		assertTrue(
+			clientSteeringState.registerIfBackoffExpired(
+				apA,
+				clientA1,
+				currentTimeNs,
+				bufferTimeNs,
+				false // dryRun
+			)
+		);
+		// should not register AP A & clientA1 again while backoff is in effect
+		assertFalse(
+			clientSteeringState.registerIfBackoffExpired(
+				apA,
+				clientA1,
+				currentTimeNs + 1,
+				bufferTimeNs,
+				false // dryRun
+			)
+		);
+		// one client's backoff should not affect another client
+		assertTrue(
+			clientSteeringState.registerIfBackoffExpired(
+				apA,
+				clientA2,
+				currentTimeNs + 1,
+				bufferTimeNs,
+				false // dryRun
+			)
+		);
+		// one AP should not affect another
+		assertTrue(
+			clientSteeringState.registerIfBackoffExpired(
+				apB,
+				clientB,
+				currentTimeNs + 1,
+				bufferTimeNs,
+				false // dryRun
+			)
+		);
+		// should re-register AP A & clientA1 after backoff has expired
+		assertTrue(
+			clientSteeringState.registerIfBackoffExpired(
+				apA,
+				clientA1,
+				currentTimeNs + bufferTimeNs,
+				bufferTimeNs,
+				false // dryRun
+			)
+		);
+		// an older timestamp should not register
+		assertFalse(
+			clientSteeringState.registerIfBackoffExpired(
+				apB,
+				clientB,
+				currentTimeNs - 1,
+				bufferTimeNs,
+				false // dryRun
+			)
+		);
+		// try a different backoffTimeNs
+		assertTrue(
+			clientSteeringState
+				.registerIfBackoffExpired(
+					apA,
+					clientA2,
+					currentTimeNs + 2,
+					1,
+					false /* dryRun */
+				)
+		);
+		// same client on a different AP should have separate timer
+		assertTrue(
+			clientSteeringState.registerIfBackoffExpired(
+				apB,
+				clientA2,
+				currentTimeNs + 3,
+				bufferTimeNs,
+				false // dryRun
+			)
+		);
+	}
+}

owrrm/src/test/java/com/facebook/openwifi/rrm/optimizers/clientsteering/SingleAPBandSteeringTest.java

@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.openwifi.rrm.optimizers.clientsteering;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+
+import com.facebook.openwifi.cloudsdk.UCentralConstants;
+import com.facebook.openwifi.rrm.DeviceDataManager;
+import com.facebook.openwifi.rrm.modules.Modeler;
+import com.facebook.openwifi.rrm.optimizers.TestUtils;
+import com.facebook.openwifi.rrm.optimizers.clientsteering.ClientSteeringOptimizer.CLIENT_STEERING_ACTIONS;
+
+public class SingleAPBandSteeringTest {
+	// TODO test 6G also (should be treated same as 5G)
+
+	/** Test zone name. */
+	private static final String TEST_ZONE = "test-zone";
+
+	// AP serial numbers
+	private static final String apA = "aaaaaaaaaaaa";
+	private static final String apB = "bbbbbbbbbbbb";
+	private static final String apC = "cccccccccccc";
+
+	// arrays are mutable, but these are private and this is just a test class
+	// arrays are more convenient for constructing states
+
+	/** bssids for radios on AP A */
+	private static final String[] bssidsA =
+		new String[] { "aa:aa:aa:aa:aa:a1", "aa:aa:aa:aa:aa:a2" };
+	/** bssids for radios on AP B */
+	private static final String[] bssidsB =
+		new String[] { "bb:bb:bb:bb:bb:b1", "bb:bb:bb:bb:bb:b2" };
+	/** bssids for radios on AP C */
+	private static final String[] bssidsC =
+		new String[] { "cc:cc:cc:cc:cc:c1", "cc:cc:cc:cc:cc:c2" };
+
+	/** Array: each element is an array of client MACS for a radio on AP A */
+	private static final String[][] clientsA =
+		new String[][] { new String[] { "1a:aa:aa:aa:aa:aa" },
+			new String[] { "2a:aa:aa:aa:aa:aa" } };
+	/** Array: each element is an array of client MACS for a radio on AP B */
+	private static final String[][] clientsB =
+		new String[][] { new String[] { "1b:bb:bb:bb:bb:bb" },
+			new String[] { "2b:bb:bb:bb:bb:bb" } };
+	/** Array: each element is an array of client MACS for a radio on AP B */
+	private static final String[][] clientsC =
+		new String[][] { new String[] { "1c:cc:cc:cc:cc:cc" },
+			new String[] { "2c:cc:cc:cc:cc:cc" } };
+
+	/** Default channel width */
+	private static final int DEFAULT_CHANNEL_WIDTH = 20;
+
+	/** Default tx power */
+	private static final int DEFAULT_TX_POWER = 20;
+
+	/** Adds matching State and DeviceCapabilityPhy objects to the data model */
+	private void addStateAndCapability(
+		Modeler.DataModel dataModel,
+		String apSerialNumber,
+		String[] bssids,
+		String[][] clients,
+		int[][] clientRssis
+	) {
+		dataModel.latestStates.put(
+			apSerialNumber,
+			Arrays.asList(
+				TestUtils.createState(
+					new int[] { 1, 36 },
+					new int[] { DEFAULT_CHANNEL_WIDTH, DEFAULT_CHANNEL_WIDTH },
+					new int[] { DEFAULT_TX_POWER, DEFAULT_TX_POWER },
+					bssids,
+					clients,
+					clientRssis,
+					TestUtils.DEFAULT_LOCAL_TIME
+				)
+			)
+		);
+		dataModel.latestDeviceCapabilitiesPhy.put(
+			apSerialNumber,
+			TestUtils.createDeviceCapabilityPhy(
+				new String[] {
+					UCentralConstants.BAND_2G,
+					UCentralConstants.BAND_5G }
+			)
+		);
+	}
+
+	/**
+	 * Creates a data model such that:
+	 * Client on (AP A, radio 2G) -> should be deauthenticated
+	 * Client on (AP A, radio 5G) -> should be steered down
+	 * Client on (AP B, radio 2G) -> no action
+	 * Client on (AP B, radio 5G) -> no action
+	 * Client on (AP C, radio 2G) -> should be steered up
+	 * Client on (AP C, radio 5G) -> no action
+	 *
+	 * @return the data model
+	 */
+	private Modeler.DataModel createModel() {
+		Modeler.DataModel dataModel = new Modeler.DataModel();
+		// AP A
+		int[] clientRssis2G =
+			new int[] { SingleAPBandSteering.DEFAULT_MIN_RSSI_2G - 1 }; // deauthenticate
+		int[] clientRssis5G =
+			new int[] { SingleAPBandSteering.DEFAULT_MIN_RSSI_NON_2G - 1 }; // steer down
+		int[][] clientRssis = new int[][] { clientRssis2G, clientRssis5G };
+		addStateAndCapability(
+			dataModel,
+			apA,
+			bssidsA,
+			clientsA,
+			clientRssis
+		);
+
+		// AP B
+		clientRssis2G = new int[] { SingleAPBandSteering.DEFAULT_MIN_RSSI_2G }; // do nothing
+		clientRssis5G =
+			new int[] { SingleAPBandSteering.DEFAULT_MIN_RSSI_NON_2G }; // do nothing
+		clientRssis = new int[][] { clientRssis2G, clientRssis5G };
+		addStateAndCapability(
+			dataModel,
+			apB,
+			bssidsB,
+			clientsB,
+			clientRssis
+		);
+
+		// AP C
+		clientRssis2G =
+			new int[] { SingleAPBandSteering.DEFAULT_MAX_RSSI_2G + 1 }; // steer up
+		clientRssis5G =
+			new int[] { SingleAPBandSteering.DEFAULT_MIN_RSSI_NON_2G }; // do nothing
+		clientRssis = new int[][] { clientRssis2G, clientRssis5G };
+		addStateAndCapability(
+			dataModel,
+			apC,
+			bssidsC,
+			clientsC,
+			clientRssis
+		);
+
+		return dataModel;
+	}
+
+	@Test
+	void testComputeApClientActionMap() {
+		DeviceDataManager deviceDataManager = new DeviceDataManager();
+		deviceDataManager
+			.setTopology(TestUtils.createTopology(TEST_ZONE, apA, apB, apC));
+		Modeler.DataModel dataModel = createModel();
+		// create expected results
+		// see javadoc of createModel for more details
+		Map<String, Map<String, String>> exp = new HashMap<>();
+		Map<String, String> apAMap = new HashMap<>();
+		apAMap
+			.put(clientsA[0][0], CLIENT_STEERING_ACTIONS.DEAUTHENTICATE.name());
+		apAMap.put(clientsA[1][0], CLIENT_STEERING_ACTIONS.STEER_DOWN.name());
+		exp.put(apA, apAMap);
+		// no action for AP B
+		Map<String, String> apCMap = new HashMap<>();
+		apCMap.put(clientsC[0][0], CLIENT_STEERING_ACTIONS.STEER_UP.name());
+		exp.put(apC, apCMap);
+		SingleAPBandSteering optimizer = SingleAPBandSteering.makeWithArgs(
+			dataModel,
+			TEST_ZONE,
+			deviceDataManager,
+			new ClientSteeringState(),
+			new HashMap<>(0) // args (use default)
+		);
+		Map<String, Map<String, String>> apClientActionMap =
+			optimizer.computeApClientActionMap(false /* dryRun */);
+		assertEquals(exp, apClientActionMap);
+	}
+}

pom.xml

@@ -7,6 +7,7 @@
   <packaging>pom</packaging>
   <modules>
     <module>lib-cloudsdk</module>
+    <module>lib-rca</module>
     <module>owrrm</module>
   </modules>
   <properties>
@@ -77,6 +78,7 @@
           <configuration>
             <doclint>all,-missing</doclint>
             <notimestamp>true</notimestamp>
+            <overview>${basedir}/owrrm/src/main/javadoc/overview.html</overview>
             <bottom>Copyright &#169; Meta Platforms, Inc. and affiliates.</bottom>
           </configuration>
         </plugin>
@@ -129,7 +131,7 @@
       </plugins>
     </pluginManagement>
   </build>
-  <dependencyManagement>  
+  <dependencyManagement>
     <dependencies>
       <dependency>
         <groupId>org.slf4j</groupId>

runner.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env sh
+
+# script to help run the binary with specific jvm and jvm options
+# Defaults to openj9. Switch by setting JVM_IMPL environment variable
+
+JAVA_BIN=$1
+JAR=$2
+shift 2
+
+COMMON_PARAMETERS=" \
+-XX:+CompactStrings \
+"
+
+JVM_IMPL="${JVM_IMPL:-openj9}"
+EXTRA_JVM_FLAGS="${EXTRA_JVM_FLAGS:-}"
+
+if [ "$JVM_IMPL" = "hotspot" ]; then
+# for hotspot
+PARAMETERS="\
+$COMMON_PARAMETERS \
+-XX:+UseG1GC \
+-XX:+UseStringDeduplication \
+$EXTRA_JVM_FLAGS \
+"
+elif [ "$JVM_IMPL" = "openj9" ]; then
+# for openj9
+PARAMETERS=" \
+$COMMON_PARAMETERS \
+-XX:+IdleTuningGcOnIdle \
+-Xtune:virtualized
+$EXTRA_JVM_FLAGS \
+"
+else
+echo "Invalid JVM_IMPL option"
+exit 1
+fi
+
+"$JAVA_BIN" \
+	$PARAMETERS \
+	-jar "$JAR" \
+	$@