Merge changes from topic "MLO Scoring"

* changes:
  wifi: Legacy HAL support to get concurrent TDLS session count
  wifi: AIDL support to get concurrent TDLS session count
  wifi: Add getWifiChipCapabilities() in shim layer
  wifi: Add AIDL support for getWifiChipCapabilities()

wifi/aidl/aidl_api/android.hardware.wifi/current/android/hardware/wifi/IWifiChip.aidl

@@ -59,6 +59,7 @@ interface IWifiChip {
   @PropagateAllowBlocking android.hardware.wifi.IWifiStaIface getStaIface(in String ifname);
   String[] getStaIfaceNames();
   android.hardware.wifi.WifiRadioCombinationMatrix getSupportedRadioCombinationsMatrix();
+  android.hardware.wifi.WifiChipCapabilities getWifiChipCapabilities();
   android.hardware.wifi.WifiUsableChannel[] getUsableChannels(in android.hardware.wifi.WifiBand band, in android.hardware.wifi.WifiIfaceMode ifaceModeMask, in android.hardware.wifi.IWifiChip.UsableChannelFilter filterMask);
   void registerEventCallback(in android.hardware.wifi.IWifiChipEventCallback callback);
   void removeApIface(in String ifname);

wifi/aidl/aidl_api/android.hardware.wifi/current/android/hardware/wifi/WifiChipCapabilities.aidl

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.wifi;
+@VintfStability
+parcelable WifiChipCapabilities {
+  int maxMloLinkCount;
+  int maxConcurrentTdlsSessionCount;
+}

wifi/aidl/android/hardware/wifi/IWifiChip.aidl

@@ -25,6 +25,7 @@ import android.hardware.wifi.IWifiStaIface;
 import android.hardware.wifi.IfaceConcurrencyType;
 import android.hardware.wifi.IfaceType;
 import android.hardware.wifi.WifiBand;
+import android.hardware.wifi.WifiChipCapabilities;
 import android.hardware.wifi.WifiDebugHostWakeReasonStats;
 import android.hardware.wifi.WifiDebugRingBufferStatus;
 import android.hardware.wifi.WifiDebugRingBufferVerboseLevel;
@@ -784,6 +785,18 @@ interface IWifiChip {
      */
     WifiRadioCombinationMatrix getSupportedRadioCombinationsMatrix();
 
+    /**
+     * Get capabilities supported by this chip.
+     *
+     * @return Chip capabilities represented by |WifiChipCapabilities|.
+     * @throws ServiceSpecificException with one of the following values:
+     *         |WifiStatusCode.ERROR_WIFI_CHIP_INVALID|,
+     *         |WifiStatusCode.ERROR_NOT_SUPPORTED|,
+     *         |WifiStatusCode.FAILURE_UNKNOWN|
+     *
+     */
+    WifiChipCapabilities getWifiChipCapabilities();
+
     /**
      * Retrieve a list of usable Wifi channels for the specified band &
      * operational modes.

wifi/aidl/android/hardware/wifi/WifiChipCapabilities.aidl

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2022 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;
+
+/**
+ * WifiChipCapabilities captures various Wifi chip capability params.
+ */
+@VintfStability
+parcelable WifiChipCapabilities {
+    /**
+     * Maximum number of links used in Multi-Link Operation. The maximum
+     * number of links used for MLO can be different from the number of
+     * radios supported by the chip.
+     *
+     * This is a static configuration of the chip.
+     */
+    int maxMloLinkCount;
+    /**
+     * Maximum number of concurrent TDLS sessions that can be enabled
+     * by framework via ISupplicantStaIface#initiateTdlsSetup().
+     */
+    int maxConcurrentTdlsSessionCount;
+}

wifi/aidl/default/aidl_struct_util.cpp

@@ -2768,6 +2768,15 @@ bool convertLegacyRadioCombinationsMatrixToAidl(
     return true;
 }
 
+bool convertLegacyWifiChipCapabilitiesToAidl(
+        const legacy_hal::wifi_chip_capabilities& legacy_chip_capabilities,
+        WifiChipCapabilities& aidl_chip_capabilities) {
+    aidl_chip_capabilities.maxMloLinkCount = legacy_chip_capabilities.max_mlo_link_count;
+    aidl_chip_capabilities.maxConcurrentTdlsSessionCount =
+            legacy_chip_capabilities.max_concurrent_tdls_session_count;
+    return true;
+}
+
 }  // namespace aidl_struct_util
 }  // namespace wifi
 }  // namespace hardware

wifi/aidl/default/aidl_struct_util.h

@@ -171,6 +171,9 @@ bool convertLegacyPeerInfoStatsToAidl(const legacy_hal::WifiPeerInfo& legacy_pee
                                       StaPeerInfo* aidl_peer_info_stats);
 bool convertLegacyWifiRateInfoToAidl(const legacy_hal::wifi_rate& legacy_rate,
                                      WifiRateInfo* aidl_rate);
+bool convertLegacyWifiChipCapabilitiesToAidl(
+        const legacy_hal::wifi_chip_capabilities& legacy_chip_capabilities,
+        WifiChipCapabilities& aidl_chip_capabilities);
 }  // namespace aidl_struct_util
 }  // namespace wifi
 }  // namespace hardware

wifi/aidl/default/wifi_chip.cpp

@@ -680,6 +680,11 @@ ndk::ScopedAStatus WifiChip::getSupportedRadioCombinationsMatrix(
                            &WifiChip::getSupportedRadioCombinationsMatrixInternal, _aidl_return);
 }
 
+ndk::ScopedAStatus WifiChip::getWifiChipCapabilities(WifiChipCapabilities* _aidl_return) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getWifiChipCapabilitiesInternal, _aidl_return);
+}
+
 void WifiChip::invalidateAndRemoveAllIfaces() {
     invalidateAndClearBridgedApAll();
     invalidateAndClearAll(ap_ifaces_);
@@ -1403,6 +1408,26 @@ WifiChip::getSupportedRadioCombinationsMatrixInternal() {
     return {aidl_matrix, ndk::ScopedAStatus::ok()};
 }
 
+std::pair<WifiChipCapabilities, ndk::ScopedAStatus> WifiChip::getWifiChipCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_chip_capabilities legacy_chip_capabilities;
+    std::tie(legacy_status, legacy_chip_capabilities) =
+            legacy_hal_.lock()->getWifiChipCapabilities();
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get chip capabilities from legacy HAL: "
+                   << legacyErrorToString(legacy_status);
+        return {WifiChipCapabilities(), createWifiStatusFromLegacyError(legacy_status)};
+    }
+    WifiChipCapabilities aidl_chip_capabilities;
+    if (!aidl_struct_util::convertLegacyWifiChipCapabilitiesToAidl(legacy_chip_capabilities,
+                                                                   aidl_chip_capabilities)) {
+        LOG(ERROR) << "Failed convertLegacyWifiChipCapabilitiesToAidl() ";
+        return {WifiChipCapabilities(), createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS)};
+    }
+
+    return {aidl_chip_capabilities, ndk::ScopedAStatus::ok()};
+}
+
 ndk::ScopedAStatus WifiChip::triggerSubsystemRestartInternal() {
     auto legacy_status = legacy_hal_.lock()->triggerSubsystemRestart();
     return createWifiStatusFromLegacyError(legacy_status);

wifi/aidl/default/wifi_chip.h

@@ -144,6 +144,7 @@ class WifiChip : public BnWifiChip {
     ndk::ScopedAStatus triggerSubsystemRestart() override;
     ndk::ScopedAStatus getSupportedRadioCombinationsMatrix(
             WifiRadioCombinationMatrix* _aidl_return) override;
+    ndk::ScopedAStatus getWifiChipCapabilities(WifiChipCapabilities* _aidl_return) override;
     binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
 
   private:
@@ -250,6 +251,7 @@ class WifiChip : public BnWifiChip {
     ndk::ScopedAStatus triggerSubsystemRestartInternal();
     std::pair<WifiRadioCombinationMatrix, ndk::ScopedAStatus>
     getSupportedRadioCombinationsMatrixInternal();
+    std::pair<WifiChipCapabilities, ndk::ScopedAStatus> getWifiChipCapabilitiesInternal();
     void setWeakPtr(std::weak_ptr<WifiChip> ptr);
 
     int32_t chip_id_;

wifi/aidl/default/wifi_legacy_hal.cpp

@@ -1609,6 +1609,13 @@ wifi_error WifiLegacyHal::getWifiCachedScanResults(
     return status;
 }
 
+std::pair<wifi_error, wifi_chip_capabilities> WifiLegacyHal::getWifiChipCapabilities() {
+    wifi_chip_capabilities chip_capabilities;
+    wifi_error status =
+            global_func_table_.wifi_get_chip_capabilities(global_handle_, &chip_capabilities);
+    return {status, chip_capabilities};
+}
+
 void WifiLegacyHal::invalidate() {
     global_handle_ = nullptr;
     iface_name_to_handle_.clear();

wifi/aidl/default/wifi_legacy_hal.h

@@ -232,6 +232,7 @@ using ::WIFI_CHAN_WIDTH_INVALID;
 using ::wifi_channel_info;
 using ::wifi_channel_stat;
 using ::wifi_channel_width;
+using ::wifi_chip_capabilities;
 using ::wifi_coex_restriction;
 using ::wifi_coex_unsafe_channel;
 using ::WIFI_DUAL_STA_NON_TRANSIENT_UNBIASED;
@@ -693,6 +694,7 @@ class WifiLegacyHal {
     wifi_error enableWifiTxPowerLimits(const std::string& iface_name, bool enable);
     wifi_error getWifiCachedScanResults(const std::string& iface_name,
                                         const CachedScanResultsCallbackHandlers& handler);
+    std::pair<wifi_error, wifi_chip_capabilities> getWifiChipCapabilities();
 
   private:
     // Retrieve interface handles for all the available interfaces.

wifi/aidl/default/wifi_legacy_hal_stubs.cpp

@@ -167,6 +167,7 @@ bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn) {
     populateStubFor(&hal_fn->wifi_chre_register_handler);
     populateStubFor(&hal_fn->wifi_enable_tx_power_limits);
     populateStubFor(&hal_fn->wifi_get_cached_scan_results);
+    populateStubFor(&hal_fn->wifi_get_chip_capabilities);
     return true;
 }