/*
 * Copyright (C) 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.
 */

syntax = "proto2";

package clearcut.connectivity;

option java_package = "com.android.server.wifi";
option java_outer_classname = "WifiMetricsProto";

// The information about the Wifi events.
message WifiLog {

  // Session information that gets logged for every Wifi connection.
  repeated ConnectionEvent connection_event = 1;

  // Number of saved networks in the user profile.
  optional int32 num_saved_networks = 2;

  // Number of open networks in the saved networks.
  optional int32 num_open_networks = 3;

  // Number of personal networks.
  optional int32 num_personal_networks = 4;

  // Number of enterprise networks.
  optional int32 num_enterprise_networks = 5;

  // Does the user have location setting enabled.
  optional bool is_location_enabled = 6;

  // Does the user have scanning enabled.
  optional bool is_scanning_always_enabled = 7;

  // Number of times user toggled wifi using the settings menu.
  optional int32 num_wifi_toggled_via_settings = 8;

  // Number of times user toggled wifi using the airplane menu.
  optional int32 num_wifi_toggled_via_airplane = 9;

  // Number of networks added by the user.
  optional int32 num_networks_added_by_user = 10;

  // Number of networks added by applications.
  optional int32 num_networks_added_by_apps = 11;

  // Number scans that returned empty results.
  optional int32 num_empty_scan_results = 12;

  // Number scans that returned at least one result.
  optional int32 num_non_empty_scan_results = 13;

  // Number of scans that were one time.
  optional int32 num_oneshot_scans = 14;

  // Number of repeated background scans that were scheduled to the chip.
  optional int32 num_background_scans = 15;

  // Error codes that a scan can result in.
  enum ScanReturnCode {

    // Return Code is unknown.
    SCAN_UNKNOWN = 0;

    // Scan was successful.
    SCAN_SUCCESS = 1;

    // Scan was successfully started, but was interrupted.
    SCAN_FAILURE_INTERRUPTED = 2;

    //  Scan failed to start because of invalid configuration
    //  (bad channel, etc).
    SCAN_FAILURE_INVALID_CONFIGURATION = 3;

    // Could not start a scan because wifi is disabled.
    FAILURE_WIFI_DISABLED = 4;

  }

  // Mapping of error codes to the number of times that scans resulted
  // in that error.
  repeated ScanReturnEntry scan_return_entries = 16;

  message ScanReturnEntry {

     // Return code of the scan.
     optional ScanReturnCode scan_return_code = 1;

     // Number of entries that were found in the scan.
     optional int32 scan_results_count = 2;
  }

  // State of the Wifi.
  enum WifiState {

    // State is unknown.
    WIFI_UNKNOWN = 0;

    // Wifi is disabled.
    WIFI_DISABLED = 1;

    // Wifi is enabled.
    WIFI_DISCONNECTED = 2;

    // Wifi is enabled and associated with an AP.
    WIFI_ASSOCIATED = 3;
  }

  // Mapping of system state to the number of times that scans were requested in
  // that state
  repeated WifiSystemStateEntry wifi_system_state_entries = 17;

  message WifiSystemStateEntry {

     // Current WiFi state.
     optional WifiState wifi_state = 1;

     // Count of scans in state.
     optional int32 wifi_state_count = 2;

     // Is screen on.
     optional bool is_screen_on = 3;
  }

  // Mapping of Error/Success codes to the number of background scans that resulted in it
  repeated ScanReturnEntry background_scan_return_entries = 18;

  // Mapping of system state to the number of times that Background scans were requested in that
  // state
  repeated WifiSystemStateEntry background_scan_request_state = 19;

  // Total number of times the Watchdog of Last Resort triggered, resetting the wifi stack
  optional int32 num_last_resort_watchdog_triggers = 20;

  // Total number of networks over bad association threshold when watchdog triggered
  optional int32 num_last_resort_watchdog_bad_association_networks_total = 21;

  // Total number of networks over bad authentication threshold when watchdog triggered
  optional int32 num_last_resort_watchdog_bad_authentication_networks_total = 22;

  // Total number of networks over bad dhcp threshold when watchdog triggered
  optional int32 num_last_resort_watchdog_bad_dhcp_networks_total = 23;

  // Total number of networks over bad other threshold when watchdog triggered
  optional int32 num_last_resort_watchdog_bad_other_networks_total = 24;

  // Total count of networks seen when watchdog triggered
  optional int32 num_last_resort_watchdog_available_networks_total = 25;

  // Total count of triggers with atleast one bad association network
  optional int32 num_last_resort_watchdog_triggers_with_bad_association = 26;

  // Total count of triggers with atleast one bad authentication network
  optional int32 num_last_resort_watchdog_triggers_with_bad_authentication = 27;

  // Total count of triggers with atleast one bad dhcp network
  optional int32 num_last_resort_watchdog_triggers_with_bad_dhcp = 28;

  // Total count of triggers with atleast one bad other network
  optional int32 num_last_resort_watchdog_triggers_with_bad_other = 29;

  // Count of times connectivity watchdog confirmed pno is working
  optional int32 num_connectivity_watchdog_pno_good = 30;

  // Count of times connectivity watchdog found pno not working
  optional int32 num_connectivity_watchdog_pno_bad = 31;

  // Count of times connectivity watchdog confirmed background scan is working
  optional int32 num_connectivity_watchdog_background_good = 32;

  // Count of times connectivity watchdog found background scan not working
  optional int32 num_connectivity_watchdog_background_bad = 33;

  // The time duration represented by this wifi log, from start to end of capture
  optional int32 record_duration_sec = 34;

  // Counts the occurrences of each individual RSSI poll level
  repeated RssiPollCount rssi_poll_rssi_count = 35;

  // Total number of times WiFi connected immediately after a Last Resort Watchdog trigger,
  // without new networks becoming available.
  optional int32 num_last_resort_watchdog_successes = 36;

  // Counts the occurrences of each alert reason.
  repeated AlertReasonCount alert_reason_count = 47;

  // Total number of saved hidden networks
  optional int32 num_hidden_networks = 37;

  // Total number of saved passpoint / hotspot 2.0 networks
  optional int32 num_passpoint_networks = 38;

  // Total number of scan results
  optional int32 num_total_scan_results = 39;

  // Total number of scan results for open networks
  optional int32 num_open_network_scan_results = 40;

  // Total number of scan results for personal networks
  optional int32 num_personal_network_scan_results = 41;

  // Total number of scan results for enterprise networks
  optional int32 num_enterprise_network_scan_results = 42;

  // Total number of scan results for hidden networks
  optional int32 num_hidden_network_scan_results = 43;

  // Total number of scan results for hotspot 2.0 r1 networks
  optional int32 num_hotspot2_r1_network_scan_results = 44;

  // Total number of scan results for hotspot 2.0 r2 networks
  optional int32 num_hotspot2_r2_network_scan_results = 45;

  // Total number of scans handled by framework (oneshot or otherwise)
  optional int32 num_scans = 46;
}

// Information that gets logged for every WiFi connection.
message RouterFingerPrint {

  enum RoamType {

    // Type is unknown.
    ROAM_TYPE_UNKNOWN = 0;

    // No roaming - usually happens on a single band (2.4 GHz) router.
    ROAM_TYPE_NONE = 1;

    // Enterprise router.
    ROAM_TYPE_ENTERPRISE = 2;

    // DBDC => Dual Band Dual Concurrent essentially a router that
    // supports both 2.4 GHz and 5 GHz bands.
    ROAM_TYPE_DBDC = 3;
  }

  enum Auth {

    // Auth is unknown.
    AUTH_UNKNOWN = 0;

    // No authentication.
    AUTH_OPEN = 1;

    // If the router uses a personal authentication.
    AUTH_PERSONAL = 2;

    // If the router is setup for enterprise authentication.
    AUTH_ENTERPRISE = 3;
  }

  enum RouterTechnology {

    // Router is unknown.
    ROUTER_TECH_UNKNOWN = 0;

    // Router Channel A.
    ROUTER_TECH_A = 1;

    // Router Channel B.
    ROUTER_TECH_B = 2;

    // Router Channel G.
    ROUTER_TECH_G = 3;

    // Router Channel N.
    ROUTER_TECH_N = 4;

    // Router Channel AC.
    ROUTER_TECH_AC = 5;

    // When the channel is not one of the above.
    ROUTER_TECH_OTHER = 6;
  }

  optional RoamType roam_type = 1;

  // Channel on which the connection takes place.
  optional int32 channel_info = 2;

  // DTIM setting of the router.
  optional int32 dtim = 3;

  // Authentication scheme of the router.
  optional Auth authentication = 4;

  // If the router is hidden.
  optional bool hidden = 5;

  // Channel information.
  optional RouterTechnology router_technology = 6;

  // whether ipv6 is supported.
  optional bool supports_ipv6 = 7;

  // If the router is a passpoint / hotspot 2.0 network
  optional bool passpoint = 8;
}

message ConnectionEvent {

  // Roam Type.
  enum RoamType {

    // Type is unknown.
    ROAM_UNKNOWN = 0;

    // No roaming.
    ROAM_NONE  = 1;

    // DBDC roaming.
    ROAM_DBDC = 2;

    // Enterprise roaming.
    ROAM_ENTERPRISE = 3;

    // User selected roaming.
    ROAM_USER_SELECTED = 4;

    // Unrelated.
    ROAM_UNRELATED = 5;
  }

  // Connectivity Level Failure.
  enum ConnectivityLevelFailure {

    // Failure is unknown.
    HLF_UNKNOWN = 0;

    // No failure.
    HLF_NONE = 1;

    // DHCP failure.
    HLF_DHCP = 2;

    // No internet connection.
    HLF_NO_INTERNET = 3;

    // No internet connection.
    HLF_UNWANTED = 4;
  }

  // Start time of the connection.
  optional int64 start_time_millis = 1;// [(datapol.semantic_type) = ST_TIMESTAMP];

  // Duration to connect.
  optional int32 duration_taken_to_connect_millis = 2;

  // Router information.
  optional RouterFingerPrint router_fingerprint = 3;

  // RSSI at the start of the connection.
  optional int32 signal_strength = 4;

  // Roam Type.
  optional RoamType roam_type = 5;

  // Result of the connection.
  optional int32 connection_result = 6;

  // Reasons for level 2 failure (needs to be coordinated with wpa-supplicant).
  optional int32 level_2_failure_code = 7;

  // Failures that happen at the connectivity layer.
  optional ConnectivityLevelFailure connectivity_level_failure_code = 8;

  // Has bug report been taken.
  optional bool automatic_bug_report_taken = 9;
}

// Number of occurrences of a specific RSSI poll rssi value
message RssiPollCount {
  // RSSI
  optional int32 rssi = 1;

  // Number of RSSI polls with 'rssi'
  optional int32 count = 2;
}

// Number of occurrences of a specific alert reason value
message AlertReasonCount {
  // Alert reason
  optional int32 reason = 1;

  // Number of alerts with |reason|.
  optional int32 count = 2;
}