| /* |
| * Copyright 2019 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. |
| */ |
| |
| #pragma once |
| |
| #include <cstdint> |
| #include <queue> |
| #include <vector> |
| |
| #include "l2cap/cid.h" |
| #include "l2cap/internal/data_pipeline_manager.h" |
| #include "l2cap/internal/dynamic_channel_allocator.h" |
| #include "l2cap/l2cap_packets.h" |
| #include "l2cap/le/internal/dynamic_channel_service_manager_impl.h" |
| #include "l2cap/le/internal/fixed_channel_impl.h" |
| #include "l2cap/le/internal/fixed_channel_service_manager_impl.h" |
| #include "l2cap/mtu.h" |
| #include "l2cap/psm.h" |
| #include "l2cap/signal_id.h" |
| #include "os/alarm.h" |
| #include "os/handler.h" |
| #include "os/queue.h" |
| #include "packet/raw_builder.h" |
| |
| namespace bluetooth { |
| namespace l2cap { |
| namespace le { |
| namespace internal { |
| |
| struct PendingCommand { |
| SignalId signal_id_ = kInvalidSignalId; |
| LeCommandCode command_code_; |
| Psm psm_; |
| Cid source_cid_; |
| Cid destination_cid_; |
| Mtu mtu_; |
| uint16_t mps_; |
| uint16_t credits_; |
| uint16_t interval_min_; |
| uint16_t interval_max_; |
| uint16_t peripheral_latency_; |
| uint16_t timeout_multiplier_; |
| |
| static PendingCommand CreditBasedConnectionRequest(SignalId signal_id, Psm psm, Cid scid, Mtu mtu, uint16_t mps, |
| uint16_t initial_credits) { |
| PendingCommand pending_command; |
| pending_command.signal_id_ = signal_id; |
| pending_command.command_code_ = LeCommandCode::LE_CREDIT_BASED_CONNECTION_REQUEST; |
| pending_command.psm_ = psm; |
| pending_command.source_cid_ = scid; |
| pending_command.mtu_ = mtu; |
| pending_command.mps_ = mps; |
| pending_command.credits_ = initial_credits; |
| return pending_command; |
| } |
| |
| static PendingCommand DisconnectionRequest(SignalId signal_id, Cid scid, Cid dcid) { |
| PendingCommand pending_command; |
| pending_command.signal_id_ = signal_id; |
| pending_command.command_code_ = LeCommandCode::DISCONNECTION_REQUEST; |
| pending_command.source_cid_ = scid; |
| pending_command.destination_cid_ = dcid; |
| return pending_command; |
| } |
| |
| static PendingCommand ConnectionParameterUpdate( |
| SignalId signal_id, |
| uint16_t interval_min, |
| uint16_t interval_max, |
| uint16_t peripheral_latency, |
| uint16_t timeout_multiplier) { |
| PendingCommand pending_command; |
| pending_command.signal_id_ = signal_id; |
| pending_command.command_code_ = LeCommandCode::CONNECTION_PARAMETER_UPDATE_REQUEST; |
| pending_command.interval_min_ = interval_min; |
| pending_command.interval_max_ = interval_max; |
| pending_command.peripheral_latency_ = peripheral_latency; |
| pending_command.timeout_multiplier_ = timeout_multiplier; |
| return pending_command; |
| } |
| }; |
| |
| class Link; |
| |
| class LeSignallingManager { |
| public: |
| LeSignallingManager(os::Handler* handler, Link* link, l2cap::internal::DataPipelineManager* data_pipeline_manager, |
| DynamicChannelServiceManagerImpl* dynamic_service_manager, |
| l2cap::internal::DynamicChannelAllocator* channel_allocator); |
| |
| virtual ~LeSignallingManager(); |
| |
| void SendConnectionRequest(Psm psm, Cid local_cid, Mtu mtu); |
| |
| void SendDisconnectRequest(Cid local_cid, Cid remote_cid); |
| |
| // Note: Since Core 4.1, LL peripheral can send this through HCI command. |
| void SendConnectionParameterUpdateRequest( |
| uint16_t interval_min, uint16_t interval_max, uint16_t peripheral_latency, uint16_t timeout_multiplier); |
| |
| void SendConnectionParameterUpdateResponse(SignalId signal_id, ConnectionParameterUpdateResponseResult result); |
| |
| void SendCredit(Cid local_cid, uint16_t credits); |
| |
| void SendEnhancedConnectionRequest(Psm psm, std::vector<Cid> local_cid, Mtu mtu); |
| |
| void SendEnhancedReconfigureRequest(std::vector<Cid> local_cid, Mtu mtu); |
| |
| void CancelAlarm(); |
| |
| void OnCommandReject(LeCommandRejectView command_reject_view); |
| |
| void OnConnectionParameterUpdateRequest( |
| SignalId signal_id, |
| uint16_t interval_min, |
| uint16_t interval_max, |
| uint16_t peripheral_latency, |
| uint16_t timeout_multiplier); |
| void OnConnectionParameterUpdateResponse(SignalId signal_id, ConnectionParameterUpdateResponseResult result); |
| |
| void OnConnectionRequest(SignalId signal_id, Psm psm, Cid remote_cid, Mtu mtu, uint16_t mps, |
| uint16_t initial_credits); |
| |
| void OnConnectionResponse(SignalId signal_id, Cid remote_cid, Mtu mtu, uint16_t mps, uint16_t initial_credits, |
| LeCreditBasedConnectionResponseResult result); |
| |
| void OnDisconnectionRequest(SignalId signal_id, Cid cid, Cid remote_cid); |
| |
| void OnDisconnectionResponse(SignalId signal_id, Cid cid, Cid remote_cid); |
| |
| void OnCredit(Cid remote_cid, uint16_t credits); |
| |
| private: |
| struct PendingConnection { |
| Cid remote_cid; |
| Mtu mtu; |
| uint16_t max_pdu_size; |
| uint16_t initial_credits; |
| SignalId incoming_signal_id; |
| }; |
| |
| void on_incoming_packet(); |
| void send_connection_response(SignalId signal_id, Cid local_cid, Mtu mtu, uint16_t mps, uint16_t initial_credit, |
| LeCreditBasedConnectionResponseResult result); |
| void on_command_timeout(); |
| void handle_send_next_command(); |
| void on_security_result_for_incoming(Psm psm, PendingConnection request, bool result); |
| void on_security_result_for_outgoing(Psm psm, Cid local_cid, Mtu mtu, bool result); |
| |
| os::Handler* handler_; |
| Link* link_; |
| l2cap::internal::DataPipelineManager* data_pipeline_manager_; |
| std::shared_ptr<le::internal::FixedChannelImpl> signalling_channel_; |
| DynamicChannelServiceManagerImpl* dynamic_service_manager_; |
| l2cap::internal::DynamicChannelAllocator* channel_allocator_; |
| std::unique_ptr<os::EnqueueBuffer<packet::BasePacketBuilder>> enqueue_buffer_; |
| std::queue<PendingCommand> pending_commands_; |
| PendingCommand command_just_sent_; |
| os::Alarm alarm_; |
| SignalId next_signal_id_ = kInitialSignalId; |
| }; |
| |
| } // namespace internal |
| } // namespace le |
| } // namespace l2cap |
| } // namespace bluetooth |