1 /* 2 * Copyright 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <chrono> 20 #include <cstdint> 21 22 #include "hci/address_with_type.h" 23 #include "phy.h" 24 25 namespace rootcanal { 26 27 using ::bluetooth::hci::AddressWithType; 28 29 // Model the connection of a device to the controller. 30 class AclConnection { 31 public: 32 AclConnection(AddressWithType address, AddressWithType own_address, 33 AddressWithType resolved_address, Phy::Type phy_type, 34 bluetooth::hci::Role role); 35 36 virtual ~AclConnection() = default; 37 GetPhyType()38 Phy::Type GetPhyType() const { return type_; } 39 GetAddress()40 AddressWithType GetAddress() const { return address_; } GetOwnAddress()41 AddressWithType GetOwnAddress() const { return own_address_; } GetResolvedAddress()42 AddressWithType GetResolvedAddress() const { return resolved_address_; } 43 44 void Encrypt(); 45 bool IsEncrypted() const; 46 47 uint16_t GetLinkPolicySettings() const; 48 void SetLinkPolicySettings(uint16_t settings); 49 50 bluetooth::hci::Role GetRole() const; 51 void SetRole(bluetooth::hci::Role role); 52 53 int8_t GetRssi() const; 54 void SetRssi(int8_t rssi); 55 56 std::chrono::steady_clock::duration TimeUntilNearExpiring() const; 57 std::chrono::steady_clock::duration TimeUntilExpired() const; 58 void ResetLinkTimer(); 59 bool IsNearExpiring() const; 60 bool HasExpired() const; 61 62 // LE-ACL state. InitiatePhyUpdate()63 void InitiatePhyUpdate() { initiated_phy_update_ = true; } PhyUpdateComplete()64 void PhyUpdateComplete() { initiated_phy_update_ = false; } InitiatedPhyUpdate()65 bool InitiatedPhyUpdate() const { return initiated_phy_update_; } GetTxPhy()66 bluetooth::hci::PhyType GetTxPhy() const { return tx_phy_; } GetRxPhy()67 bluetooth::hci::PhyType GetRxPhy() const { return rx_phy_; } SetTxPhy(bluetooth::hci::PhyType phy)68 void SetTxPhy(bluetooth::hci::PhyType phy) { tx_phy_ = phy; } SetRxPhy(bluetooth::hci::PhyType phy)69 void SetRxPhy(bluetooth::hci::PhyType phy) { rx_phy_ = phy; } 70 71 private: 72 AddressWithType address_; 73 AddressWithType own_address_; 74 AddressWithType resolved_address_; 75 Phy::Type type_{Phy::Type::BR_EDR}; 76 77 // Reports the RSSI measured for the last packet received on 78 // this connection. 79 int8_t rssi_{0}; 80 81 // State variables 82 bool encrypted_{false}; 83 uint16_t link_policy_settings_{0}; 84 bluetooth::hci::Role role_{bluetooth::hci::Role::CENTRAL}; 85 std::chrono::steady_clock::time_point last_packet_timestamp_; 86 std::chrono::steady_clock::duration timeout_; 87 88 // LE-ACL state. 89 bluetooth::hci::PhyType tx_phy_{bluetooth::hci::PhyType::LE_1M}; 90 bluetooth::hci::PhyType rx_phy_{bluetooth::hci::PhyType::LE_1M}; 91 bool initiated_phy_update_{false}; 92 }; 93 94 } // namespace rootcanal 95