wifi(interface): Add gscan/apf related API's (1f212a65) · Commits · e / os / android_hardware_interfaces

wifi/1.0/Android.bp

+8 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@ genrule {
		"IWifiP2pIface.hal",
		"IWifiRttController.hal",
		"IWifiStaIface.hal",
		"IWifiStaIfaceEventCallback.hal",
		],
		out: [
		"android/hardware/wifi/1.0/types.cpp",
		@@ -29,6 +30,7 @@ genrule {
		"android/hardware/wifi/1.0/WifiP2pIfaceAll.cpp",
		"android/hardware/wifi/1.0/WifiRttControllerAll.cpp",
		"android/hardware/wifi/1.0/WifiStaIfaceAll.cpp",
		"android/hardware/wifi/1.0/WifiStaIfaceEventCallbackAll.cpp",
		],
		}

		@@ -48,6 +50,7 @@ genrule {
		"IWifiP2pIface.hal",
		"IWifiRttController.hal",
		"IWifiStaIface.hal",
		"IWifiStaIfaceEventCallback.hal",
		],
		out: [
		"android/hardware/wifi/1.0/types.h",
		@@ -101,6 +104,11 @@ genrule {
		"android/hardware/wifi/1.0/BnWifiStaIface.h",
		"android/hardware/wifi/1.0/BpWifiStaIface.h",
		"android/hardware/wifi/1.0/BsWifiStaIface.h",
		"android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.h",
		"android/hardware/wifi/1.0/IHwWifiStaIfaceEventCallback.h",
		"android/hardware/wifi/1.0/BnWifiStaIfaceEventCallback.h",
		"android/hardware/wifi/1.0/BpWifiStaIfaceEventCallback.h",
		"android/hardware/wifi/1.0/BsWifiStaIfaceEventCallback.h",
		],
		}

wifi/1.0/Android.mk

+46 −0

Original line number	Diff line number	Diff line
		@@ -261,6 +261,10 @@ $(GEN): PRIVATE_HIDL := $(HIDL)
		$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IWifiStaIface.hal
		$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/IWifiIface.hal
		$(GEN): $(LOCAL_PATH)/IWifiIface.hal
		$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/IWifiStaIfaceEventCallback.hal
		$(GEN): $(LOCAL_PATH)/IWifiStaIfaceEventCallback.hal
		$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/types.hal
		$(GEN): $(LOCAL_PATH)/types.hal
		$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
		$(GEN): PRIVATE_CUSTOM_TOOL = \
		$(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
		@@ -270,6 +274,25 @@ $(GEN): PRIVATE_CUSTOM_TOOL = \
		$(GEN): $(LOCAL_PATH)/IWifiStaIface.hal
		$(transform-generated-source)
		LOCAL_GENERATED_SOURCES += $(GEN)

		#
		# Build IWifiStaIfaceEventCallback.hal
		#
		GEN := $(intermediates)/android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.java
		$(GEN): $(HIDL)
		$(GEN): PRIVATE_HIDL := $(HIDL)
		$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IWifiStaIfaceEventCallback.hal
		$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/types.hal
		$(GEN): $(LOCAL_PATH)/types.hal
		$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
		$(GEN): PRIVATE_CUSTOM_TOOL = \
		$(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
		-Ljava -randroid.hardware:hardware/interfaces \
		android.hardware.wifi@1.0::IWifiStaIfaceEventCallback

		$(GEN): $(LOCAL_PATH)/IWifiStaIfaceEventCallback.hal
		$(transform-generated-source)
		LOCAL_GENERATED_SOURCES += $(GEN)
		include $(BUILD_JAVA_LIBRARY)


		@@ -532,6 +555,10 @@ $(GEN): PRIVATE_HIDL := $(HIDL)
		$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IWifiStaIface.hal
		$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/IWifiIface.hal
		$(GEN): $(LOCAL_PATH)/IWifiIface.hal
		$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/IWifiStaIfaceEventCallback.hal
		$(GEN): $(LOCAL_PATH)/IWifiStaIfaceEventCallback.hal
		$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/types.hal
		$(GEN): $(LOCAL_PATH)/types.hal
		$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
		$(GEN): PRIVATE_CUSTOM_TOOL = \
		$(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
		@@ -541,6 +568,25 @@ $(GEN): PRIVATE_CUSTOM_TOOL = \
		$(GEN): $(LOCAL_PATH)/IWifiStaIface.hal
		$(transform-generated-source)
		LOCAL_GENERATED_SOURCES += $(GEN)

		#
		# Build IWifiStaIfaceEventCallback.hal
		#
		GEN := $(intermediates)/android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.java
		$(GEN): $(HIDL)
		$(GEN): PRIVATE_HIDL := $(HIDL)
		$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IWifiStaIfaceEventCallback.hal
		$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/types.hal
		$(GEN): $(LOCAL_PATH)/types.hal
		$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
		$(GEN): PRIVATE_CUSTOM_TOOL = \
		$(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
		-Ljava -randroid.hardware:hardware/interfaces \
		android.hardware.wifi@1.0::IWifiStaIfaceEventCallback

		$(GEN): $(LOCAL_PATH)/IWifiStaIfaceEventCallback.hal
		$(transform-generated-source)
		LOCAL_GENERATED_SOURCES += $(GEN)
		include $(BUILD_STATIC_JAVA_LIBRARY)

wifi/1.0/IWifiChip.hal

+4 −4

Original line number	Diff line number	Diff line
		@@ -36,7 +36,7 @@ interface IWifiChip {
		* ChipIfaceCombination for examples.
		*/
		struct ChipIfaceCombinationLimit {
		vec<IfaceType> types; // Each IfaceType may occur at most once
		vec<IfaceType> types; // Each IfaceType must occur at most once.
		uint32_t maxIfaces;
		};

		@@ -89,7 +89,7 @@ interface IWifiChip {
		* the target combination is also satisfied. At that point new interfaces
		* satisfying only the target combination can be added (meaning the initial
		* combination limits will no longer satisfied). The addition of these new
		* interfaces should not impact the existence of interfaces that satisfy both
		* interfaces must not impact the existence of interfaces that satisfy both
		* combinations.
		*
		* For example, a chip with available combinations:
		@@ -98,10 +98,10 @@ interface IWifiChip {
		* AP interface in place of one of the STAs then first one of the STA
		* interfaces must be removed and then the AP interface can be created after
		* the STA had been torn down. During this process the remaining STA and NAN
		* interfaces should not be removed/recreated.
		* interfaces must not be removed/recreated.
		*
		* If a chip does not support this kind of reconfiguration in this mode then
		* the combinations should be separated into two separate modes. Before
		* the combinations must be separated into two separate modes. Before
		* switching modes all interfaces will be torn down, the mode switch will be
		* enacted and when it completes the new interfaces will be brought up.
		*/

wifi/1.0/IWifiStaIface.hal

+266 −1

Original line number	Diff line number	Diff line
		@@ -17,10 +17,275 @@
		package android.hardware.wifi@1.0;

		import IWifiIface;
		import IWifiStaIfaceEventCallback;

		/**
		* Interface used to represent a single STA iface.
		*/
		interface IWifiStaIface extends IWifiIface {
		/** TODO(rpius): Add methods to the interface. */
		/**
		* Mask of capabilities suported by this Iface.
		*/
		enum StaIfaceCapabilityMask : uint32_t {
		/**
		* If set indicates that the APF APIs are supported.
		* APF (Android Packet Filter) is a BPF like packet filtering
		* bytecode executed by the firmware.
		*/
		APF = 1 << 0,
		/**
		* If set indicates that the Background Scan APIs are supported.
		* Background scan allow the host to send a number of buckets down to the
		* firmware. Each bucket contains a set of channels, a period, and some
		* parameters about how and when to report results.
		*/
		BACKGROUND_SCAN = 1 << 1,
		};

		/**
		* Parameters to specify the APF capability of this iface.
		*/
		struct ApfPacketFilterCapabilities {
		/**
		* Version of the packet filter interpreter supported
		*/
		uint32_t version;
		/**
		* Maximum size of the filter bytecodes in bytes for an iface.
		*/
		uint32_t maxLength;
		};

		/**
		* Parameters to specify the Background Scan capability of this iface.
		*/
		struct BackgroundScanCapabilities {
		/**
		* Maximum number of bytes available for cached scan results
		*/
		uint32_t maxCacheSize;
		/**
		* Maximum number of buckets that can be supplied for a scan
		*/
		uint32_t maxBuckets;
		/**
		* Maximum number of APs that must be stored for each scan.
		*/
		uint32_t maxApCachePerScan;
		/**
		* Max reporting number of scans threshold that can be specified in the scan
		* parameters.
		*/
		int32_t maxReportingThreshold;
		};

		/**
		* Bands that can be specified in Background scan requests.
		*/
		enum BackgroundScanBand : uint32_t {
		BAND_UNSPECIFIED,
		/**
		* 2.4 GHz.
		*/
		BAND_24GHZ = 1,
		/**
		* 5 GHz without DFS.
		*/
		BAND_5GHZ = 2,
		/**
		* 5 GHz DFS only.
		*/
		BAND_5GHZ_DFS = 4,
		/**
		* 5 GHz with DFS.
		*/
		BAND_5GHZ_WITH_DFS = 6,
		/**
		* 2.4 GHz + 5 GHz; no DFS.
		*/
		BAND_24GHZ_5GHZ = 3,
		/**
		* 2.4 GHz + 5 GHz with DFS
		*/
		BAND_24GHZ_5GHZ_WITH_DFS = 7
		};

		/**
		* Mask of event reporting schemes that can be specified in background scan
		* requests.
		*/
		enum BackgroundScanBucketEventReportSchemeMask : uint32_t {
		/**
		* Report a scan completion event after scan. If this is not set then scan
		* completion events must be reported if report_threshold_percent or
		* report_threshold_num_scans is reached.
		*/
		EACH_SCAN = 1 << 0,
		/**
		* Forward scan results (beacons/probe responses + IEs) in real time to HAL,
		* in addition to completion events.
		* Note: To keep backward compatibility, fire completion events regardless
		* of REPORT_EVENTS_EACH_SCAN.
		*/
		FULL_RESULTS = 1 << 1,
		/**
		* Controls if scans for this bucket must be placed in the results buffer.
		*/
		NO_BATCH = 1 << 2,
		};

		/**
		* Background Scan parameters per bucket that can be specified in background
		* scan requests.
		*/
		struct BackgroundScanBucketParameters {
		/**
		* Bands to scan or 0 if frequencies list must be used instead.
		*/
		BackgroundScanBand band;
		/**
		* Channel frequencies (in Mhz) to scan if \|band\| is set to
		* \|UNSPECIFIED\|.
		*/
		vec<uint32_t> frequenciesInMhz;
		/**
		* Period at which this bucket must be scanned (in milliseconds). Must be an integer
		* multiple of the \|basePeriodInMs\| specified in the BackgroundScanParameters.
		*/
		uint32_t periodInMs;
		/**
		* Bitset of \|BackgroundScanBucketEventReportSchemeMask\| values controlling
		* when events for this bucket must be reported.
		*/
		uint32_t eventReportScheme;
		/**
		* For exponential back off. If \|exponentialMaxPeriodInMs\| is non zero or
		* different than period, then this bucket is an exponential backoff bucket
		* and the scan period must grow exponentially as per formula:
		* actual_period(N) = period * (base ^ (N/step_count))
		* to this maximum period (in milliseconds).
		*/
		uint32_t exponentialMaxPeriodInMs;
		/**
		* For exponential back off. multiplier: new_period=old_period * base
		*/
		uint32_t exponentialBase;
		/**
		* For exponential back off. Number of scans to perform for a given
		* period.
		*/
		uint32_t exponentialStepCount;
		};

		/**
		* Background Scan parameters that can be specified in background scan
		* requests.
		*/
		struct BackgroundScanParameters {
		/**
		* GCD of all bucket periods (in milliseconds).
		*/
		uint32_t basePeriodInMs;
		/**
		* Maximum number of APs that must be stored for each scan. If the maximum
		* is reached the highest RSSI results must be returned.
		*/
		uint32_t maxApPerScan;
		/**
		* % cache buffer filled threshold at which the host must be notified of
		* batched scan results.
		*/
		uint32_t reportThresholdPercent;
		/**
		* Threshold at which the AP must be woken up, in number of scans.
		*/
		uint32_t reportThresholdNumScans;
		/**
		* List of buckets to be scheduled.
		*/
		vec<BackgroundScanBucketParameters> buckets;
		};

		/**
		* Requests notifications of significant events on this iface. Multiple calls
		* to this must register multiple callbacks each of which must receive all
		* events.
		*
		* @param callback An instance of the \|IWifiStaIfaceEventCallback\| HIDL interface
		* object.
		*/
		oneway registerEventCallback(IWifiStaIfaceEventCallback callback);

		/**
		* Get the capabilities supported by this STA iface.
		*
		* @return capabilities Bitset of \|StaIfaceCapabilityMask\| values.
		*/
		getCapabilities() generates (uint64_t capabilities);

		/**
		* Used to query additional information about the chip's APF capabilities.
		* Will fail if \|StaIfaceCapabilityMask.APF\| is not set.
		*
		* @return capabilities Instance of \|ApfPacketFilterCapabilities\|.
		*/
		getApfPacketFilterCapabilities()
		generates (ApfPacketFilterCapabilities capabilities);

		/**
		* Installs an APF program on this iface, replacing an existing
		* program if present.
		* Will fail if \|StaIfaceCapabilityMask.APF\| is not set.
		*
		* @param cmdId command Id to use for this invocation.
		* @param program APF Program to be set.
		*/
		oneway installApfPacketFilter(CommandId cmdId, vec<uint8_t> program);

		/**
		* Used to query additional information about the chip's APF capabilities.
		* Will fail if \|StaIfaceCapabilityMask.BACKGROUND_SCAN\| is not set.
		*
		* @return capabilities Instance of \|BackgroundScanCapabilities\|.
		*/
		getBackgroundScanCapabilities()
		generates (BackgroundScanCapabilities capabilities);

		/**
		* Start a background scan using the given cmdId as an identifier. Only one
		* active background scan need be supported.
		*
		* When this is called all requested buckets must be scanned, starting the
		* beginning of the cycle.
		*
		* For example:
		* If there are two buckets specified
		* - Bucket 1: period=10s
		* - Bucket 2: period=20s
		* - Bucket 3: period=30s
		* Then the following scans must occur
		* - t=0 buckets 1, 2, and 3 are scanned
		* - t=10 bucket 1 is scanned
		* - t=20 bucket 1 and 2 are scanned
		* - t=30 bucket 1 and 3 are scanned
		* - t=40 bucket 1 and 2 are scanned
		* - t=50 bucket 1 is scanned
		* - t=60 buckets 1, 2, and 3 are scanned
		* - and the patter repeats
		*
		* If any scan does not occur or is incomplete (error, interrupted, etc) then
		* a cached scan result must still be recorded with the
		* WIFI_SCAN_FLAG_INTERRUPTED flag set.
		*
		* @param cmdId command Id to use for this invocation.
		* @param params Background scan parameters.
		*/
		oneway startBackgroundScan(CommandId cmdId, BackgroundScanParameters params);

		/**
		* Stop the background scan started.
		*
		* @param cmdId command Id corresponding to the request.
		*/
		oneway stopBackgroundScan(CommandId cmdId);
		};

wifi/1.0/IWifiStaIfaceEventCallback.hal

0 → 100644

+126 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright 2016 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.hardware.wifi@1.0;

		interface IWifiStaIfaceEventCallback {
		/**
		* Callback indicating that the requested packet filter was successfully
		* installed.
		*/
		oneway onInstallPacketFilterSuccess();

		/**
		* Callback indicating that installing a packet filter failed.
		*/
		oneway onInstallPacketFilterFailure(FailureReason reason);

		/**
		* Callback indicating that a requested background scan was started.
		*/
		oneway onBackgroundScanStarted();

		/**
		* Callback indicating that a requested background scan failed to start.
		*/
		oneway onBackgroundScanStartFailure(FailureReason reason);

		/**
		* Callback indicating that a scan was stopped
		*/
		oneway onBackgroundScanStopped();

		/**
		* Information elements contained within the \|ScanResult\| structure.
		* These elements correspond to the IEEE_802.11 standard.
		*/
		struct InformationElement {
		uint8_t id;
		vec<uint8_t> data;
		};

		/**
		* BSSID type. 6 octets representing the physical address of an AP.
		*/
		typedef uint8_t[6] Bssid;

		/**
		* Structure describing all the information about a single access point seen
		* during the scan.
		*/
		struct ScanResult {
		int64_t timeStampInUs;
		vec<uint8_t> ssid;
		Bssid bssid;
		uint32_t frequencyInMhz;
		int8_t rssi;
		uint16_t beaconPeriodInMs;
		uint16_t capability;
		vec<InformationElement> informationElements;
		};

		/**
		* Mask of flags set in the \|ScanData\| instance.
		*/
		enum ScanDataFlagMask {
		/**
		* Indicates that a scan was interrupted/did not occur so results may be
		* incomplete.
		*/
		WIFI_SCAN_FLAG_INTERRUPTED = 1 << 0,
		};

		/**
		* Structure describing all the information about all the access points seen during
		* the scan.
		*/
		struct ScanData {
		/**
		* Bitset containing \|ScanDataFlagMask\| values.
		*/
		uint32_t flags;
		/**
		* Bitset where each bit indicates if the bucket with that index was
		* scanned.
		*/
		uint32_t bucketsScanned;
		/**
		* List of scan results.
		*/
		vec<ScanResult> results;
		};

		/**
		* Called for each received beacon/probe response for a scan with the
		* \|REPORT_EVENTS_FULL_RESULTS\| flag set in
		* \|BackgroundScanBucketParameters.eventReportScheme\|.
		*
		* @param cmdId command Id corresponding to the request.
		* @parm result Full scan result for an AP.
		*/
		oneway onBackgroundFullScanResult(CommandId cmdId, ScanResult result);

		/**
		* Called when the \|BackgroundScanBucketParameters.eventReportScheme\| flags
		* for at least one bucket that was just scanned was
		* \|REPORT_EVENTS_EACH_SCAN\| or one of the configured thresholds was
		* breached.
		*
		* @param cmdId command Id corresponding to the request.
		* @parm scanDatas List of scan result for all AP's seen since last callback.
		*/
		oneway onBackgroundScanResults(CommandId cmdId, vec<ScanData> scanDatas);
		};