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.
119 lines
4.6 KiB
119 lines
4.6 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.
|
|
*/
|
|
|
|
#include <unordered_map>
|
|
|
|
#include "common/bind.h"
|
|
#include "l2cap/internal/basic_mode_channel_data_controller.h"
|
|
#include "l2cap/internal/enhanced_retransmission_mode_channel_data_controller.h"
|
|
#include "l2cap/internal/le_credit_based_channel_data_controller.h"
|
|
#include "l2cap/internal/scheduler.h"
|
|
#include "l2cap/internal/sender.h"
|
|
#include "os/handler.h"
|
|
#include "os/log.h"
|
|
|
|
namespace bluetooth {
|
|
namespace l2cap {
|
|
namespace internal {
|
|
|
|
Sender::Sender(os::Handler* handler, ILink* link, Scheduler* scheduler, std::shared_ptr<ChannelImpl> channel)
|
|
: handler_(handler), link_(link), queue_end_(channel->GetQueueDownEnd()), scheduler_(scheduler),
|
|
channel_id_(channel->GetCid()), remote_channel_id_(channel->GetRemoteCid()),
|
|
data_controller_(std::make_unique<BasicModeDataController>(channel_id_, remote_channel_id_, queue_end_, handler_,
|
|
scheduler_)) {
|
|
try_register_dequeue();
|
|
}
|
|
|
|
Sender::Sender(os::Handler* handler, ILink* link, Scheduler* scheduler, std::shared_ptr<ChannelImpl> channel,
|
|
ChannelMode mode)
|
|
: handler_(handler), link_(link), queue_end_(channel->GetQueueDownEnd()), scheduler_(scheduler),
|
|
channel_id_(channel->GetCid()), remote_channel_id_(channel->GetRemoteCid()) {
|
|
if (mode == ChannelMode::BASIC) {
|
|
data_controller_ =
|
|
std::make_unique<BasicModeDataController>(channel_id_, remote_channel_id_, queue_end_, handler_, scheduler_);
|
|
} else if (mode == ChannelMode::ERTM) {
|
|
data_controller_ =
|
|
std::make_unique<ErtmController>(link_, channel_id_, remote_channel_id_, queue_end_, handler_, scheduler_);
|
|
} else if (mode == ChannelMode::LE_CREDIT_BASED) {
|
|
data_controller_ = std::make_unique<LeCreditBasedDataController>(link_, channel_id_, remote_channel_id_, queue_end_,
|
|
handler_, scheduler_);
|
|
}
|
|
try_register_dequeue();
|
|
}
|
|
|
|
Sender::~Sender() {
|
|
if (is_dequeue_registered_.exchange(false)) {
|
|
queue_end_->UnregisterDequeue();
|
|
}
|
|
}
|
|
|
|
void Sender::OnPacketSent() {
|
|
link_->OnPendingPacketChange(channel_id_, false);
|
|
try_register_dequeue();
|
|
}
|
|
|
|
std::unique_ptr<Sender::UpperDequeue> Sender::GetNextPacket() {
|
|
return data_controller_->GetNextPacket();
|
|
}
|
|
|
|
DataController* Sender::GetDataController() {
|
|
return data_controller_.get();
|
|
}
|
|
|
|
void Sender::try_register_dequeue() {
|
|
if (is_dequeue_registered_.exchange(true)) {
|
|
return;
|
|
}
|
|
queue_end_->RegisterDequeue(handler_, common::Bind(&Sender::dequeue_callback, common::Unretained(this)));
|
|
}
|
|
|
|
// From external context
|
|
void Sender::dequeue_callback() {
|
|
auto packet = queue_end_->TryDequeue();
|
|
ASSERT(packet != nullptr);
|
|
handler_->Post(
|
|
common::BindOnce(&DataController::OnSdu, common::Unretained(data_controller_.get()), std::move(packet)));
|
|
if (is_dequeue_registered_.exchange(false)) {
|
|
queue_end_->UnregisterDequeue();
|
|
}
|
|
link_->OnPendingPacketChange(channel_id_, true);
|
|
}
|
|
|
|
void Sender::UpdateClassicConfiguration(classic::internal::ChannelConfigurationState config) {
|
|
auto mode = config.retransmission_and_flow_control_mode_;
|
|
if (mode == mode_) {
|
|
return;
|
|
}
|
|
if (mode == RetransmissionAndFlowControlModeOption::L2CAP_BASIC) {
|
|
data_controller_ =
|
|
std::make_unique<BasicModeDataController>(channel_id_, remote_channel_id_, queue_end_, handler_, scheduler_);
|
|
return;
|
|
}
|
|
if (mode == RetransmissionAndFlowControlModeOption::ENHANCED_RETRANSMISSION) {
|
|
data_controller_ =
|
|
std::make_unique<ErtmController>(link_, channel_id_, remote_channel_id_, queue_end_, handler_, scheduler_);
|
|
RetransmissionAndFlowControlConfigurationOption option = config.local_retransmission_and_flow_control_;
|
|
option.tx_window_size_ = config.remote_retransmission_and_flow_control_.tx_window_size_;
|
|
data_controller_->SetRetransmissionAndFlowControlOptions(option);
|
|
data_controller_->EnableFcs(config.fcs_type_ == FcsType::DEFAULT);
|
|
return;
|
|
}
|
|
}
|
|
|
|
} // namespace internal
|
|
} // namespace l2cap
|
|
} // namespace bluetooth
|