Chris Manton | 4eb5631 | 2019-08-13 14:45:06 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 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 | |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 19 | #include <memory> |
Chris Manton | 6230a6f | 2019-11-13 18:37:33 -0800 | [diff] [blame] | 20 | #include <unordered_map> |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 21 | |
| 22 | #include "hci/acl_manager.h" |
Hansong Zhang | a631253 | 2019-11-19 14:01:36 -0800 | [diff] [blame] | 23 | #include "l2cap/classic/dynamic_channel_configuration_option.h" |
Hansong Zhang | cd0c319 | 2019-09-20 15:50:42 -0700 | [diff] [blame] | 24 | #include "l2cap/classic/internal/dynamic_channel_service_manager_impl.h" |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 25 | #include "l2cap/classic/internal/fixed_channel_impl.h" |
Hansong Zhang | cd0c319 | 2019-09-20 15:50:42 -0700 | [diff] [blame] | 26 | #include "l2cap/classic/internal/fixed_channel_service_manager_impl.h" |
Hansong Zhang | 90603b3 | 2019-11-22 15:11:12 -0800 | [diff] [blame] | 27 | #include "l2cap/internal/data_pipeline_manager.h" |
Hansong Zhang | 47dec64 | 2019-11-25 12:01:15 -0800 | [diff] [blame^] | 28 | #include "l2cap/internal/dynamic_channel_allocator.h" |
| 29 | #include "l2cap/internal/dynamic_channel_impl.h" |
Jack He | 580337d | 2019-10-01 20:44:04 -0700 | [diff] [blame] | 30 | #include "l2cap/internal/fixed_channel_allocator.h" |
Hansong Zhang | 47dec64 | 2019-11-25 12:01:15 -0800 | [diff] [blame^] | 31 | #include "l2cap/internal/ilink.h" |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 32 | #include "l2cap/internal/parameter_provider.h" |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 33 | #include "os/alarm.h" |
Hansong Zhang | cd0c319 | 2019-09-20 15:50:42 -0700 | [diff] [blame] | 34 | #include "os/handler.h" |
| 35 | #include "signalling_manager.h" |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 36 | |
Chris Manton | 4eb5631 | 2019-08-13 14:45:06 -0700 | [diff] [blame] | 37 | namespace bluetooth { |
| 38 | namespace l2cap { |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 39 | namespace classic { |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 40 | namespace internal { |
| 41 | |
Hansong Zhang | 47dec64 | 2019-11-25 12:01:15 -0800 | [diff] [blame^] | 42 | class Link : public l2cap::internal::ILink { |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 43 | public: |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 44 | Link(os::Handler* l2cap_handler, std::unique_ptr<hci::AclConnection> acl_connection, |
Hansong Zhang | 90603b3 | 2019-11-22 15:11:12 -0800 | [diff] [blame] | 45 | l2cap::internal::ParameterProvider* parameter_provider, |
Hansong Zhang | cd0c319 | 2019-09-20 15:50:42 -0700 | [diff] [blame] | 46 | DynamicChannelServiceManagerImpl* dynamic_service_manager, |
| 47 | FixedChannelServiceManagerImpl* fixed_service_manager); |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 48 | |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 49 | virtual ~Link() = default; |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 50 | |
Hansong Zhang | 47dec64 | 2019-11-25 12:01:15 -0800 | [diff] [blame^] | 51 | virtual hci::AddressWithType GetDevice() { |
| 52 | return {acl_connection_->GetAddress(), acl_connection_->GetAddressType()}; |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 53 | } |
| 54 | |
Chris Manton | 6230a6f | 2019-11-13 18:37:33 -0800 | [diff] [blame] | 55 | struct PendingDynamicChannelConnection { |
| 56 | os::Handler* handler_; |
| 57 | DynamicChannelManager::OnConnectionOpenCallback on_open_callback_; |
| 58 | DynamicChannelManager::OnConnectionFailureCallback on_fail_callback_; |
Hansong Zhang | a631253 | 2019-11-19 14:01:36 -0800 | [diff] [blame] | 59 | classic::DynamicChannelConfigurationOption configuration_; |
Chris Manton | 6230a6f | 2019-11-13 18:37:33 -0800 | [diff] [blame] | 60 | }; |
| 61 | |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 62 | // ACL methods |
| 63 | |
Hansong Zhang | 80bbfc3 | 2019-09-10 16:12:05 -0700 | [diff] [blame] | 64 | virtual void OnAclDisconnected(hci::ErrorCode status); |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 65 | |
Hansong Zhang | 80bbfc3 | 2019-09-10 16:12:05 -0700 | [diff] [blame] | 66 | virtual void Disconnect(); |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 67 | |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 68 | // FixedChannel methods |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 69 | |
Hansong Zhang | 213fc7c | 2019-11-14 14:56:08 -0800 | [diff] [blame] | 70 | std::shared_ptr<FixedChannelImpl> AllocateFixedChannel(Cid cid, SecurityPolicy security_policy); |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 71 | |
Hansong Zhang | 80bbfc3 | 2019-09-10 16:12:05 -0700 | [diff] [blame] | 72 | virtual bool IsFixedChannelAllocated(Cid cid); |
| 73 | |
Hansong Zhang | cd0c319 | 2019-09-20 15:50:42 -0700 | [diff] [blame] | 74 | // DynamicChannel methods |
| 75 | |
Hansong Zhang | d1b6c9b | 2019-10-22 16:11:53 -0700 | [diff] [blame] | 76 | virtual Cid ReserveDynamicChannel(); |
| 77 | |
Hansong Zhang | cd0c319 | 2019-09-20 15:50:42 -0700 | [diff] [blame] | 78 | virtual void SendConnectionRequest(Psm psm, Cid local_cid); |
Chris Manton | 6230a6f | 2019-11-13 18:37:33 -0800 | [diff] [blame] | 79 | virtual void SendConnectionRequest(Psm psm, Cid local_cid, |
| 80 | PendingDynamicChannelConnection pending_dynamic_channel_connection); |
Hansong Zhang | cd0c319 | 2019-09-20 15:50:42 -0700 | [diff] [blame] | 81 | |
Chris Manton | 2480960 | 2019-10-31 14:36:02 -0700 | [diff] [blame] | 82 | virtual void SendInformationRequest(InformationRequestInfoType type); |
| 83 | |
Hansong Zhang | 47dec64 | 2019-11-25 12:01:15 -0800 | [diff] [blame^] | 84 | virtual void SendDisconnectionRequest(Cid local_cid, Cid remote_cid) override; |
Hansong Zhang | 80bbfc3 | 2019-09-10 16:12:05 -0700 | [diff] [blame] | 85 | |
Hansong Zhang | 47dec64 | 2019-11-25 12:01:15 -0800 | [diff] [blame^] | 86 | virtual std::shared_ptr<l2cap::internal::DynamicChannelImpl> AllocateDynamicChannel(Psm psm, Cid remote_cid, |
| 87 | SecurityPolicy security_policy); |
Hansong Zhang | 80bbfc3 | 2019-09-10 16:12:05 -0700 | [diff] [blame] | 88 | |
Hansong Zhang | 47dec64 | 2019-11-25 12:01:15 -0800 | [diff] [blame^] | 89 | virtual std::shared_ptr<l2cap::internal::DynamicChannelImpl> AllocateReservedDynamicChannel( |
| 90 | Cid reserved_cid, Psm psm, Cid remote_cid, SecurityPolicy security_policy); |
Hansong Zhang | d1b6c9b | 2019-10-22 16:11:53 -0700 | [diff] [blame] | 91 | |
Hansong Zhang | a631253 | 2019-11-19 14:01:36 -0800 | [diff] [blame] | 92 | virtual classic::DynamicChannelConfigurationOption GetConfigurationForInitialConfiguration(Cid cid); |
Hansong Zhang | b096076 | 2019-11-14 17:57:10 -0800 | [diff] [blame] | 93 | |
Hansong Zhang | 80bbfc3 | 2019-09-10 16:12:05 -0700 | [diff] [blame] | 94 | virtual void FreeDynamicChannel(Cid cid); |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 95 | |
| 96 | // Check how many channels are acquired or in use, if zero, start tear down timer, if non-zero, cancel tear down timer |
Hansong Zhang | 80bbfc3 | 2019-09-10 16:12:05 -0700 | [diff] [blame] | 97 | virtual void RefreshRefCount(); |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 98 | |
Chris Manton | 6230a6f | 2019-11-13 18:37:33 -0800 | [diff] [blame] | 99 | virtual void NotifyChannelCreation(Cid cid, std::unique_ptr<DynamicChannel> channel); |
| 100 | virtual void NotifyChannelFail(Cid cid); |
| 101 | |
Jack He | 0aca2b2 | 2019-11-21 15:27:19 -0800 | [diff] [blame] | 102 | // Information received from signaling channel |
Hansong Zhang | 70fb464 | 2019-11-20 17:33:06 -0800 | [diff] [blame] | 103 | virtual void SetRemoteConnectionlessMtu(Mtu mtu); |
| 104 | virtual Mtu GetRemoteConnectionlessMtu() const; |
| 105 | virtual void SetRemoteSupportsErtm(bool supported); |
| 106 | virtual bool GetRemoteSupportsErtm() const; |
| 107 | virtual void SetRemoteSupportsFcs(bool supported); |
| 108 | virtual bool GetRemoteSupportsFcs() const; |
| 109 | |
Jack He | 0aca2b2 | 2019-11-21 15:27:19 -0800 | [diff] [blame] | 110 | virtual std::string ToString() { |
| 111 | return GetDevice().ToString(); |
| 112 | } |
| 113 | |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 114 | private: |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 115 | os::Handler* l2cap_handler_; |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 116 | l2cap::internal::FixedChannelAllocator<FixedChannelImpl, Link> fixed_channel_allocator_{this, l2cap_handler_}; |
Hansong Zhang | 47dec64 | 2019-11-25 12:01:15 -0800 | [diff] [blame^] | 117 | l2cap::internal::DynamicChannelAllocator dynamic_channel_allocator_{this, l2cap_handler_}; |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 118 | std::unique_ptr<hci::AclConnection> acl_connection_; |
Hansong Zhang | 90603b3 | 2019-11-22 15:11:12 -0800 | [diff] [blame] | 119 | l2cap::internal::DataPipelineManager data_pipeline_manager_; |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 120 | l2cap::internal::ParameterProvider* parameter_provider_; |
Hansong Zhang | cd0c319 | 2019-09-20 15:50:42 -0700 | [diff] [blame] | 121 | DynamicChannelServiceManagerImpl* dynamic_service_manager_; |
| 122 | FixedChannelServiceManagerImpl* fixed_service_manager_; |
| 123 | ClassicSignallingManager signalling_manager_; |
Chris Manton | 6230a6f | 2019-11-13 18:37:33 -0800 | [diff] [blame] | 124 | std::unordered_map<Cid, PendingDynamicChannelConnection> local_cid_to_pending_dynamic_channel_connection_map_; |
Jack He | 6a9b466 | 2019-08-20 22:07:26 -0700 | [diff] [blame] | 125 | os::Alarm link_idle_disconnect_alarm_{l2cap_handler_}; |
Hansong Zhang | 70fb464 | 2019-11-20 17:33:06 -0800 | [diff] [blame] | 126 | Mtu remote_mtu_ = kMinimumClassicMtu; |
| 127 | bool remote_supports_ertm_ = false; |
| 128 | bool remote_supports_fcs_ = false; |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 129 | DISALLOW_COPY_AND_ASSIGN(Link); |
Jack He | b5360fb | 2019-08-19 18:16:33 -0700 | [diff] [blame] | 130 | }; |
| 131 | |
| 132 | } // namespace internal |
Jack He | ff38d89 | 2019-10-03 17:11:07 -0700 | [diff] [blame] | 133 | } // namespace classic |
Chris Manton | 4eb5631 | 2019-08-13 14:45:06 -0700 | [diff] [blame] | 134 | } // namespace l2cap |
| 135 | } // namespace bluetooth |