You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
2.9 KiB
95 lines
2.9 KiB
/*
|
|
* 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 <atomic>
|
|
#include <string>
|
|
#include <unordered_map>
|
|
|
|
#include "common/bidi_queue.h"
|
|
#include "common/bind.h"
|
|
#include "data_controller.h"
|
|
#include "l2cap/cid.h"
|
|
#include "l2cap/classic/internal/channel_configuration_state.h"
|
|
#include "l2cap/internal/channel_impl.h"
|
|
#include "l2cap/internal/data_controller.h"
|
|
#include "l2cap/l2cap_packets.h"
|
|
#include "l2cap/mtu.h"
|
|
#include "os/handler.h"
|
|
#include "os/queue.h"
|
|
#include "packet/base_packet_builder.h"
|
|
#include "packet/packet_view.h"
|
|
|
|
namespace bluetooth {
|
|
namespace l2cap {
|
|
namespace internal {
|
|
class Scheduler;
|
|
class ILink;
|
|
|
|
/**
|
|
* A middle layer between L2CAP channel and outgoing packet scheduler.
|
|
* Fetches data (SDU) from an L2CAP channel queue end, handles L2CAP segmentation, and gives data to L2CAP scheduler.
|
|
*/
|
|
class Sender {
|
|
public:
|
|
using UpperEnqueue = packet::PacketView<packet::kLittleEndian>;
|
|
using UpperDequeue = packet::BasePacketBuilder;
|
|
using UpperQueueDownEnd = common::BidiQueueEnd<UpperEnqueue, UpperDequeue>;
|
|
|
|
enum class ChannelMode {
|
|
BASIC = 0,
|
|
ERTM = 3,
|
|
LE_CREDIT_BASED = 10,
|
|
};
|
|
|
|
Sender(os::Handler* handler, ILink* link, Scheduler* scheduler, std::shared_ptr<ChannelImpl> channel);
|
|
Sender(os::Handler* handler, ILink* link, Scheduler* scheduler, std::shared_ptr<ChannelImpl> channel,
|
|
ChannelMode mode);
|
|
~Sender();
|
|
|
|
/**
|
|
* Callback from scheduler to indicate that scheduler already dequeued a packet from sender's queue.
|
|
* Segmenter can continue dequeuing from channel queue end.
|
|
*/
|
|
void OnPacketSent();
|
|
|
|
/**
|
|
* Called by the scheduler to return the next PDU to be sent
|
|
*/
|
|
std::unique_ptr<UpperDequeue> GetNextPacket();
|
|
|
|
void UpdateClassicConfiguration(classic::internal::ChannelConfigurationState config);
|
|
DataController* GetDataController();
|
|
|
|
private:
|
|
os::Handler* handler_;
|
|
ILink* link_;
|
|
UpperQueueDownEnd* queue_end_;
|
|
Scheduler* scheduler_;
|
|
const Cid channel_id_;
|
|
const Cid remote_channel_id_;
|
|
std::atomic_bool is_dequeue_registered_ = false;
|
|
RetransmissionAndFlowControlModeOption mode_ = RetransmissionAndFlowControlModeOption::L2CAP_BASIC;
|
|
std::unique_ptr<DataController> data_controller_;
|
|
|
|
void try_register_dequeue();
|
|
void dequeue_callback();
|
|
};
|
|
} // namespace internal
|
|
} // namespace l2cap
|
|
} // namespace bluetooth
|