| /* |
| * 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 <memory> |
| #include <unordered_map> |
| #include <utility> |
| |
| #include "common/bidi_queue.h" |
| #include "l2cap/cid.h" |
| #include "l2cap/internal/channel_impl.h" |
| #include "l2cap/internal/scheduler.h" |
| #include "l2cap/l2cap_packets.h" |
| #include "l2cap/mtu.h" |
| #include "os/queue.h" |
| #include "packet/base_packet_builder.h" |
| #include "packet/packet_view.h" |
| |
| namespace bluetooth { |
| namespace l2cap { |
| namespace internal { |
| |
| /** |
| * Handle receiving L2CAP PDUs from link queue and distribute them into into channel data controllers. |
| * Dequeue incoming packets from LinkQueueUpEnd, and enqueue it to ChannelQueueDownEnd. Note: If a channel |
| * cannot dequeue from ChannelQueueDownEnd so that the buffer for incoming packet is full, further incoming packets will |
| * be dropped. |
| * The Reassembler keeps the reference to ChannelImpl objects, because it needs to check channel mode and parameters. |
| * The Reassembler also keeps the reference to Scheduler, to get Segmenter and send signals (Tx, Rx seq) to it. |
| */ |
| class Receiver { |
| public: |
| using UpperEnqueue = packet::PacketView<packet::kLittleEndian>; |
| using UpperDequeue = packet::BasePacketBuilder; |
| using UpperQueueDownEnd = common::BidiQueueEnd<UpperEnqueue, UpperDequeue>; |
| using LowerEnqueue = UpperDequeue; |
| using LowerDequeue = UpperEnqueue; |
| using LowerQueueUpEnd = common::BidiQueueEnd<LowerEnqueue, LowerDequeue>; |
| |
| Receiver(LowerQueueUpEnd* link_queue_up_end, os::Handler* handler, Scheduler* scheduler); |
| ~Receiver(); |
| |
| private: |
| LowerQueueUpEnd* link_queue_up_end_; |
| os::Handler* handler_; |
| Scheduler* scheduler_; |
| |
| void link_queue_dequeue_callback(); |
| }; |
| |
| } // namespace internal |
| } // namespace l2cap |
| } // namespace bluetooth |