| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "quiche/quic/core/congestion_control/send_algorithm_interface.h" |
| |
| #include "absl/base/attributes.h" |
| #include "quiche/quic/core/congestion_control/bbr2_sender.h" |
| #include "quiche/quic/core/congestion_control/bbr_sender.h" |
| #include "quiche/quic/core/congestion_control/tcp_cubic_sender_bytes.h" |
| #include "quiche/quic/core/quic_packets.h" |
| #include "quiche/quic/platform/api/quic_bug_tracker.h" |
| #include "quiche/quic/platform/api/quic_flag_utils.h" |
| #include "quiche/quic/platform/api/quic_flags.h" |
| |
| namespace quic { |
| |
| class RttStats; |
| |
| // Factory for send side congestion control algorithm. |
| SendAlgorithmInterface* SendAlgorithmInterface::Create( |
| const QuicClock* clock, const RttStats* rtt_stats, |
| const QuicUnackedPacketMap* unacked_packets, |
| CongestionControlType congestion_control_type, QuicRandom* random, |
| QuicConnectionStats* stats, QuicPacketCount initial_congestion_window, |
| SendAlgorithmInterface* old_send_algorithm) { |
| QuicPacketCount max_congestion_window = |
| GetQuicFlag(quic_max_congestion_window); |
| switch (congestion_control_type) { |
| case kGoogCC: // GoogCC is not supported by quic/core, fall back to BBR. |
| case kBBR: |
| return new BbrSender(clock->ApproximateNow(), rtt_stats, unacked_packets, |
| initial_congestion_window, max_congestion_window, |
| random, stats); |
| case kBBRv2: |
| return new Bbr2Sender( |
| clock->ApproximateNow(), rtt_stats, unacked_packets, |
| initial_congestion_window, max_congestion_window, random, stats, |
| old_send_algorithm && |
| old_send_algorithm->GetCongestionControlType() == kBBR |
| ? static_cast<BbrSender*>(old_send_algorithm) |
| : nullptr); |
| case kPCC: |
| // PCC is currently not supported, fall back to CUBIC instead. |
| ABSL_FALLTHROUGH_INTENDED; |
| case kCubicBytes: |
| return new TcpCubicSenderBytes( |
| clock, rtt_stats, false /* don't use Reno */, |
| initial_congestion_window, max_congestion_window, stats); |
| case kRenoBytes: |
| return new TcpCubicSenderBytes(clock, rtt_stats, true /* use Reno */, |
| initial_congestion_window, |
| max_congestion_window, stats); |
| } |
| return nullptr; |
| } |
| |
| } // namespace quic |