3b6705fb20
Add the plumbing required for setting a random MAC address on AP startup. The random MAC address is created once for the lifetime of the daemon and then reused for any further AP creation. This would ensure that the MAC address is changed on every reboot. The feature is turned on by default, devices will need to set the |WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION| in their .mk file to disable the feature at compile time. Bug: 78353419 Test: ./hardware/interfaces/wifi/1.3/default/tests/runtests.sh Change-Id: I054d5249c20cc582b76966313135295873cd0b61
168 lines
6 KiB
C++
168 lines
6 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "wifi_feature_flags.h"
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namespace android {
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namespace hardware {
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namespace wifi {
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namespace V1_3 {
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namespace implementation {
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namespace feature_flags {
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using V1_0::ChipModeId;
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using V1_0::IfaceType;
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using V1_0::IWifiChip;
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/* The chip may either have a single mode supporting any number of combinations,
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* or a fixed dual-mode (so it involves firmware loading to switch between
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* modes) setting. If there is a need to support more modes, it needs to be
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* implemented manually in WiFi HAL (see changeFirmwareMode in
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* WifiChip::handleChipConfiguration).
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*
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* Supported combinations are defined in device's makefile, for example:
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* WIFI_HAL_INTERFACE_COMBINATIONS := {{{STA, AP}, 1}, {{P2P, NAN}, 1}},
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* WIFI_HAL_INTERFACE_COMBINATIONS += {{{STA}, 1}, {{AP}, 2}}
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* What means:
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* Interface combination 1: 1 STA or AP and 1 P2P or NAN concurrent iface
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* operations.
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* Interface combination 2: 1 STA and 2 AP concurrent iface operations.
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*
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* For backward compatibility, the following makefile flags can be used to
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* generate combinations list:
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* - WIFI_HIDL_FEATURE_DUAL_INTERFACE
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* - WIFI_HIDL_FEATURE_DISABLE_AP
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* - WIFI_HIDL_FEATURE_AWARE
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* However, they are ignored if WIFI_HAL_INTERFACE_COMBINATIONS was provided.
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* With WIFI_HIDL_FEATURE_DUAL_INTERFACE flag set, there is a single mode with
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* two interface combinations:
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* Interface Combination 1: Will support 1 STA and 1 P2P or NAN (optional)
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* concurrent iface operations.
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* Interface Combination 2: Will support 1 STA and 1 AP concurrent
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* iface operations.
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*
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* The only dual-mode configuration supported is for alternating STA and AP
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* mode, that may involve firmware reloading. In such case, there are 2 separate
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* modes of operation with 1 interface combination each:
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* Mode 1 (STA mode): Will support 1 STA and 1 P2P or NAN (optional)
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* concurrent iface operations.
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* Mode 2 (AP mode): Will support 1 AP iface operation.
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*
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* If Aware is enabled, the iface combination will be modified to support either
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* P2P or NAN in place of just P2P.
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*/
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// clang-format off
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#ifdef WIFI_HAL_INTERFACE_COMBINATIONS
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constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
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#elif defined(WIFI_HIDL_FEATURE_DUAL_INTERFACE)
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// former V2 (fixed dual interface) setup expressed as V3
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constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
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# ifdef WIFI_HIDL_FEATURE_DISABLE_AP
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# ifdef WIFI_HIDL_FEATURE_AWARE
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// 1 STA + 1 of (P2P or NAN)
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# define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
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# else
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// 1 STA + 1 P2P
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# define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
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# endif
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# else
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# ifdef WIFI_HIDL_FEATURE_AWARE
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// (1 STA + 1 AP) or (1 STA + 1 of (P2P or NAN))
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# define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
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{{{STA}, 1}, {{P2P, NAN}, 1}}
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# else
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// (1 STA + 1 AP) or (1 STA + 1 P2P)
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# define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
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{{{STA}, 1}, {{P2P}, 1}}
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# endif
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# endif
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#else
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// V1 (fixed single interface, dual-mode chip)
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constexpr ChipModeId kMainModeId = chip_mode_ids::kV1Sta;
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# ifdef WIFI_HIDL_FEATURE_AWARE
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// 1 STA + 1 of (P2P or NAN)
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# define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
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# else
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// 1 STA + 1 P2P
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# define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
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# endif
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# ifndef WIFI_HIDL_FEATURE_DISABLE_AP
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# define WIFI_HAL_INTERFACE_COMBINATIONS_AP {{{AP}, 1}}
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# endif
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#endif
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// clang-format on
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/**
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* Helper class to convert a collection of combination limits to a combination.
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*
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* The main point here is to simplify the syntax required by
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* WIFI_HAL_INTERFACE_COMBINATIONS.
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*/
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struct ChipIfaceCombination
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: public hidl_vec<IWifiChip::ChipIfaceCombinationLimit> {
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ChipIfaceCombination(
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const std::initializer_list<IWifiChip::ChipIfaceCombinationLimit> list)
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: hidl_vec(list) {}
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operator IWifiChip::ChipIfaceCombination() const { return {*this}; }
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static hidl_vec<IWifiChip::ChipIfaceCombination> make_vec(
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const std::initializer_list<ChipIfaceCombination> list) {
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return hidl_vec<IWifiChip::ChipIfaceCombination>( //
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std::begin(list), std::end(list));
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}
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};
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#define STA IfaceType::STA
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#define AP IfaceType::AP
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#define P2P IfaceType::P2P
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#define NAN IfaceType::NAN
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static const std::vector<IWifiChip::ChipMode> kChipModes{
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{kMainModeId,
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ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS})},
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#ifdef WIFI_HAL_INTERFACE_COMBINATIONS_AP
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{chip_mode_ids::kV1Ap,
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ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS_AP})},
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#endif
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};
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#undef STA
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#undef AP
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#undef P2P
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#undef NAN
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#ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
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static const bool wifiHidlFeatureDisableApMacRandomization = true;
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#else
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static const bool wifiHidlFeatureDisableApMacRandomization = false;
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#endif // WIFI_HIDL_FEATURE_DISABLE_AP
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WifiFeatureFlags::WifiFeatureFlags() {}
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std::vector<IWifiChip::ChipMode> WifiFeatureFlags::getChipModes() {
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return kChipModes;
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}
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bool WifiFeatureFlags::isApMacRandomizationDisabled() {
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return wifiHidlFeatureDisableApMacRandomization;
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}
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} // namespace feature_flags
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} // namespace implementation
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} // namespace V1_3
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} // namespace wifi
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} // namespace hardware
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} // namespace android
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