net/quic/congestion_control/send_algorithm_interface.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/quic/congestion_control/send_algorithm_interface.h"
   6
   7 #include "net/quic/congestion_control/tcp_cubic_bytes_sender.h"
   8 #include "net/quic/congestion_control/tcp_cubic_sender.h"
   9 #include "net/quic/quic_flags.h"
  10 #include "net/quic/quic_protocol.h"
  11
  12 namespace net {
  13
  14 class RttStats;
  15
  16 // Factory for send side congestion control algorithm.
  17 SendAlgorithmInterface* SendAlgorithmInterface::Create(
  18     const QuicClock* clock,
  19     const RttStats* rtt_stats,
  20     CongestionControlType congestion_control_type,
  21     QuicConnectionStats* stats,
  22     QuicPacketCount initial_congestion_window) {
  23   const QuicPacketCount max_congestion_window =
  24       FLAGS_quic_limit_max_cwnd_to_receive_buffer
  25           ? (kDefaultSocketReceiveBuffer * kUsableRecieveBufferFraction) /
  26                 kDefaultTCPMSS
  27           : kMaxTcpCongestionWindow;
  28   switch (congestion_control_type) {
  29     case kCubic:
  30       return new TcpCubicSender(clock, rtt_stats, false /* don't use Reno */,
  31                                 initial_congestion_window,
  32                                 max_congestion_window, stats);
  33     case kCubicBytes:
  34       return new TcpCubicBytesSender(
  35           clock, rtt_stats, false /* don't use Reno */,
  36           initial_congestion_window, max_congestion_window, stats);
  37     case kReno:
  38       return new TcpCubicSender(clock, rtt_stats, true /* use Reno */,
  39                                 initial_congestion_window,
  40                                 max_congestion_window, stats);
  41     case kRenoBytes:
  42       return new TcpCubicBytesSender(clock, rtt_stats, true /* use Reno */,
  43                                      initial_congestion_window,
  44                                      max_congestion_window, stats);
  45     case kBBR:
  46   // TODO(rtenneti): Enable BbrTcpSender.
  47 #if 0
  48       return new BbrTcpSender(clock, rtt_stats, initial_congestion_window,
  49                               max_congestion_window, stats);
  50 #endif
  51       LOG(DFATAL) << "BbrTcpSender is not supported.";
  52       return nullptr;
  53   }
  54   return nullptr;
  55 }
  56
  57 }  // namespace net