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/*
 * 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.supplicant@1.0;

import ISupplicantIface;
import ISupplicantStaIfaceCallback;

/**
 * Interface exposed by the supplicant for each station mode network
 * interface (e.g wlan0) it controls.
 */
interface ISupplicantStaIface extends ISupplicantIface {
  /**
   * Access Network Query Protocol info ID elements
   * for IEEE Std 802.11u-2011.
   */
  enum AnqpInfoId : uint16_t {
    VENUE_NAME = 258,
    ROAMING_CONSORTIUM = 261,
    IP_ADDR_TYPE_AVAILABILITY = 262,
    NAI_REALM = 263,
    ANQP_3GPP_CELLULAR_NETWORK = 264,
    DOMAIN_NAME = 268
  };

  /**
   * Access Network Query Protocol subtype elements
   * for Hotspot 2.0.
   */
  enum Hs20AnqpSubtypes : uint32_t {
    OPERATOR_FRIENDLY_NAME = 3,
    WAN_METRICS = 4,
    CONNECTION_CAPABILITY = 5,
    OSU_PROVIDERS_LIST = 8,
  };

  /**
   * Enum describing the types of RX filter supported
   * via driver commands.
   */
  enum RxFilterType : uint8_t {
    V4_MULTICAST = 0,
    V6_MULTICAST = 1
  };

  /**
   * Enum describing the modes of BT coexistence supported
   * via driver commands.
   */
  enum BtCoexistenceMode : uint8_t {
    ENABLED = 0,
    DISABLED = 1,
    SENSE = 2
  };

  enum ExtRadioWorkDefaults : uint32_t {
    TIMEOUT_IN_SECS = 10
  };

  /**
   * Register for callbacks from this interface.
   *
   * These callbacks are invoked for events that are specific to this interface.
   * Registration of multiple callback objects is supported. These objects must
   * be automatically deleted when the corresponding client process is dead or
   * if this interface is removed.
   *
   * @param callback An instance of the |ISupplicantStaIfaceCallback| HIDL
   *        interface object.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  registerCallback(ISupplicantStaIfaceCallback callback)
      generates (SupplicantStatus status);

  /**
   * Reconnect to the currently active network, even if we are already
   * connected.
   *
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|,
   *         |SupplicantStatusCode.FAILURE_IFACE_DISABLED|
   */
  reassociate() generates (SupplicantStatus status);

  /**
   * Reconnect to the currently active network, if we are currently
   * disconnected.
   *
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|,
   *         |SupplicantStatusCode.FAILURE_IFACE_DISABLED|,
   *         |SupplicantStatusCode.FAILURE_IFACE_NOT_DISCONNECTED|
   */
  reconnect() generates (SupplicantStatus status);

  /**
   * Disconnect from the current active network.
   *
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|,
   *         |SupplicantStatusCode.FAILURE_IFACE_DISABLED|
   */
  disconnect() generates (SupplicantStatus status);

  /**
   * Turn on/off power save mode for the interface.
   *
   * @param enable Indicate if power save is to be turned on/off.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|,
   *         |SupplicantStatusCode.FAILURE_IFACE_DISABLED|
   */
  setPowerSave(bool enable) generates (SupplicantStatus status);

  /**
   * Initiate TDLS discover with the provided peer MAC address.
   *
   * @param macAddress MAC address of the peer.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  initiateTdlsDiscover(MacAddress macAddress)
      generates (SupplicantStatus status);

  /**
   * Initiate TDLS setup with the provided peer MAC address.
   *
   * @param macAddress MAC address of the peer.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  initiateTdlsSetup(MacAddress macAddress)
      generates (SupplicantStatus status);

  /**
   * Initiate TDLS teardown with the provided peer MAC address.
   *
   * @param macAddress MAC address of the peer.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  initiateTdlsTeardown(MacAddress macAddress)
      generates (SupplicantStatus status);

  /**
   * Initiate ANQP (for IEEE 802.11u Interworking/Hotspot 2.0) queries with the
   * specified access point.
   * The ANQP data fetched must be returned in the
   * |ISupplicantStaIfaceCallback.onAnqpQueryDone| callback.
   *
   * @param macAddress MAC address of the access point.
   * @param infoElements List of information elements to query for.
   * @param subtypes List of HS20 subtypes to query for.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  initiateAnqpQuery(MacAddress macAddress,
                    vec<AnqpInfoId> infoElements,
                    vec<Hs20AnqpSubtypes> subTypes)
      generates (SupplicantStatus status);

  /**
   * Initiate the Hotspot 2.0 icon query with the specified accesss point.
   * The icon data fetched must be returned in the
   * |ISupplicantStaIfaceCallback.onHs20IconQueryDone| callback.
   *
   * @param macAddress MAC address of the access point.
   * @param fileName Name of the file to request from the access point.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  initiateHs20IconQuery(MacAddress macAddress, string fileName)
      generates (SupplicantStatus status);

  /**
   * Send driver command to get MAC address of the device.
   *
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   * @return macAddr MAC address of the device.
   */
  getMacAddress()
      generates (SupplicantStatus status, MacAddress macAddr);

  /**
   * Send driver command to start RX filter.
   *
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  startRxFilter() generates (SupplicantStatus status);

  /**
   * Send driver command to stop RX filter.
   *
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  stopRxFilter() generates (SupplicantStatus status);

  /**
   * Send driver command to add the specified RX filter.
   *
   * @param type Type of filter.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  addRxFilter(RxFilterType type)
      generates (SupplicantStatus status);

  /**
   * Send driver command to remove the specified RX filter.
   *
   * @param type Type of filter.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  removeRxFilter(RxFilterType type)
      generates (SupplicantStatus status);

  /**
   * Send driver command to set Bluetooth coexistence mode.
   *
   * @param mode Mode of Bluetooth coexistence.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  setBtCoexistenceMode(BtCoexistenceMode mode)
      generates (SupplicantStatus status);

  /**
   * Send driver command to set Bluetooth coexistence scan mode.
   * When this mode is on, some of the low-level scan parameters
   * used by the driver are changed to reduce interference
   * with A2DP streaming.
   *
   * @param enable true to enable, false to disable.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  setBtCoexistenceScanModeEnabled(bool enable)
      generates (SupplicantStatus status);

  /**
   * Send driver command to set suspend optimizations for power save.
   *
   * @param enable true to enable, false to disable.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  setSuspendModeEnabled(bool enable)
      generates (SupplicantStatus status);

  /**
   * Send driver command to set country code.
   *
   * @param code 2 byte country code (as defined in ISO 3166) to set.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  setCountryCode(int8_t[2] code)
      generates (SupplicantStatus status);

  /**
   * Initiate WPS setup in registrar role to learn the current AP configuration.
   *
   * @param bssid BSSID of the AP.
   * @param pin Pin of the AP.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  startWpsRegistrar(Bssid bssid, string pin)
      generates (SupplicantStatus status);

  /**
   * Initiate WPS Push Button setup.
   * The PBC operation requires that a button is also pressed at the
   * AP/Registrar at about the same time (2 minute window).
   *
   * @param bssid BSSID of the AP. Use zero'ed bssid to indicate wildcard.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  startWpsPbc(Bssid bssid) generates (SupplicantStatus status);

  /**
   * Initiate WPS Pin Keypad setup.
   *
   * @param pin 8 digit pin to be used.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  startWpsPinKeypad(string pin) generates (SupplicantStatus status);

  /**
   * Initiate WPS Pin Display setup.
   *
   * @param bssid BSSID of the AP. Use zero'ed bssid to indicate wildcard.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   * @return generatedPin 8 digit pin generated.
   */
  startWpsPinDisplay(Bssid bssid)
      generates (SupplicantStatus status, string generatedPin);

  /**
   * Cancel any ongoing WPS operations.
   *
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  cancelWps() generates (SupplicantStatus status);

  /**
   * Use external processing for SIM/USIM operations
   *
   * @param useExternalSim true to use external, false otherwise.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
   *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
   */
  setExternalSim(bool useExternalSim) generates (SupplicantStatus status);

  /**
   * External programs can request supplicant to not start offchannel
   * operations during other tasks that may need exclusive control of the
   * radio.
   *
   * This method can be used to reserve a slot for radio access. If freq is
   * specified, other radio work items on the same channel can be completed in
   * parallel. Otherwise, all other radio work items are blocked during
   * execution. Timeout must be set to |ExtRadioWorkDefaults.TIMEOUT_IN_SECS|
   * seconds by default to avoid blocking supplicant operations on the iface
   * for excessive time. If a longer (or shorter) safety timeout is needed,
   * that may be specified with the optional timeout parameter. This command
   * returns an identifier for the radio work item.
   *
   * Once the radio work item has been started,
   * |ISupplicant.onExtRadioWorkStart| callback is indicated that the external
   * processing can start.
   *
   * @param name Name for the radio work being added.
   * @param freqInMhz Frequency to specify. Set to 0 for all channels.
   * @param timeoutInSec Timeout tospecify. Set to 0 for default timeout.
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|
   * @return id Identifier for this radio work.
   */
  addExtRadioWork(string name, uint32_t freqInMhz, uint32_t timeoutInSec)
      generates (SupplicantStatus status, uint32_t id);

  /**
   * Indicates to supplicant that the external radio work has completed.
   * This allows other radio works to be performed. If this method is not
   * invoked (e.g., due to the external program terminating), supplicant
   * must time out the radio work item on the iface and send
   * |ISupplicantCallback.onExtRadioWorkTimeout| event to indicate
   * that this has happened.
   *
   * This method may also be used to cancel items that have been scheduled
   * via |addExtRadioWork|, but have not yet been started (notified via
   * |ISupplicantCallback.onExtRadioWorkStart|).
   *
   * @return id Identifier generated for the radio work addition
   *         (using |addExtRadioWork|).
   * @return status Status of the operation.
   *         Possible status codes:
   *         |SupplicantStatusCode.SUCCESS|,
   *         |SupplicantStatusCode.FAILURE_UNKNOWN|
   */
  removeExtRadioWork(uint32_t id) generates (SupplicantStatus status);
};