/*
 * Copyright 2017 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@1.2;

import @1.0::MacAddress;
import @1.0::NanDataPathConfirmInd;
import @1.0::WifiChannelInMhz;
import @1.0::WifiChannelWidthInMhz;

/**
 * NAN configuration request parameters added in the 1.2 HAL. These are supplemental to previous
 * versions.
 */
struct NanConfigRequestSupplemental {
    /**
     * Specify the Discovery Beacon interval in ms. Specification only applicable if the device
     * transmits Discovery Beacons (based on the Wi-Fi Aware protocol selection criteria). The value
     * can be increased to reduce power consumption (on devices which would transmit Discovery
     * Beacons), however - cluster synchronization time will likely increase.
     * Values are:
     *  - A value of 0 indicates that the HAL sets the interval to a default (implementation specific)
     *  - A positive value
     */
    uint32_t discoveryBeaconIntervalMs;
    /**
     * The number of spatial streams to be used for transmitting NAN management frames (does NOT apply
     * to data-path packets). A small value may reduce power consumption for small discovery packets.
     * Values are:
     *  - A value of 0 indicates that the HAL sets the number to a default (implementation specific)
     *  - A positive value
     */
    uint32_t numberOfSpatialStreamsInDiscovery;
    /**
     * Controls whether the device may terminate listening on a Discovery Window (DW) earlier than the
     * DW termination (16ms) if no information is received. Enabling the feature will result in
     * lower power consumption, but may result in some missed messages and hence increased latency.
     */
    bool enableDiscoveryWindowEarlyTermination;
    /**
     * Controls whether NAN RTT (ranging) is permitted. Global flag on any NAN RTT operations are
     * allowed. Controls ranging in the context of discovery as well as direct RTT.
     */
    bool enableRanging;
};

/**
 * NAN data path channel information provided to the framework.
 */
struct NanDataPathChannelInfo {
    /**
     * Channel frequency in MHz.
     */
    WifiChannelInMhz channelFreq;
    /**
     * Channel bandwidth in MHz.
     */
    WifiChannelWidthInMhz channelBandwidth;
    /**
     * Number of spatial streams used in the channel.
     */
    uint32_t numSpatialStreams;
};

/**
 * NAN Data path confirmation Indication structure.
 * Event indication is received on both initiator and responder side when negotiation for a
 * data-path finish: on success or failure.
 */
struct NanDataPathConfirmInd {
    /**
     * Baseline information as defined in HAL 1.0.
     */
    @1.0::NanDataPathConfirmInd V1_0;
    /**
     * The channel(s) on which the NDP is scheduled to operate.
     * Updates to the operational channels are provided using the |eventDataPathScheduleUpdate|
     * event.
     */
    vec<NanDataPathChannelInfo> channelInfo;
};

/**
 * NAN data path channel information update indication structure.
 * Event indication is received by all NDP owners whenever the channels on which the NDP operates
 * are updated.
 * Note: multiple NDPs may share the same schedule, the indication specifies all NDPs to which it
 * applies.
 */
struct NanDataPathScheduleUpdateInd {
    /**
     * The discovery address (NMI) of the peer to which the NDP is connected.
     */
    MacAddress peerDiscoveryAddress;
    /**
     * The updated channel(s) information.
     */
    vec<NanDataPathChannelInfo> channelInfo;
    /**
     * The list of NDPs to which this update applies.
     */
    vec<uint32_t> ndpInstanceIds;
};