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1 // Copyright (c) 2015 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "net/quic/congestion_control/tcp_cubic_sender_bytes.h" | 5 #include "net/quic/congestion_control/tcp_cubic_sender_bytes.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "net/quic/congestion_control/prr_sender.h" | 9 #include "net/quic/congestion_control/prr_sender.h" |
10 #include "net/quic/congestion_control/rtt_stats.h" | 10 #include "net/quic/congestion_control/rtt_stats.h" |
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73 void TcpCubicSenderBytes::SetMinCongestionWindowInPackets( | 73 void TcpCubicSenderBytes::SetMinCongestionWindowInPackets( |
74 QuicPacketCount congestion_window) { | 74 QuicPacketCount congestion_window) { |
75 min_congestion_window_ = congestion_window * kDefaultTCPMSS; | 75 min_congestion_window_ = congestion_window * kDefaultTCPMSS; |
76 } | 76 } |
77 | 77 |
78 void TcpCubicSenderBytes::SetNumEmulatedConnections(int num_connections) { | 78 void TcpCubicSenderBytes::SetNumEmulatedConnections(int num_connections) { |
79 TcpCubicSenderBase::SetNumEmulatedConnections(num_connections); | 79 TcpCubicSenderBase::SetNumEmulatedConnections(num_connections); |
80 cubic_.SetNumConnections(num_connections_); | 80 cubic_.SetNumConnections(num_connections_); |
81 } | 81 } |
82 | 82 |
83 void TcpCubicSenderBytes::SetMaxCongestionWindow( | |
84 QuicByteCount max_congestion_window) { | |
85 DCHECK(!FLAGS_quic_ignore_srbf); | |
86 max_congestion_window_ = max_congestion_window; | |
87 } | |
88 | |
89 void TcpCubicSenderBytes::ExitSlowstart() { | 83 void TcpCubicSenderBytes::ExitSlowstart() { |
90 slowstart_threshold_ = congestion_window_; | 84 slowstart_threshold_ = congestion_window_; |
91 } | 85 } |
92 | 86 |
93 void TcpCubicSenderBytes::OnPacketLost(QuicPacketNumber packet_number, | 87 void TcpCubicSenderBytes::OnPacketLost(QuicPacketNumber packet_number, |
94 QuicByteCount lost_bytes, | 88 QuicByteCount lost_bytes, |
95 QuicByteCount bytes_in_flight) { | 89 QuicByteCount bytes_in_flight) { |
96 // TCP NewReno (RFC6582) says that once a loss occurs, any losses in packets | 90 // TCP NewReno (RFC6582) says that once a loss occurs, any losses in packets |
97 // already sent should be treated as a single loss event, since it's expected. | 91 // already sent should be treated as a single loss event, since it's expected. |
98 if (packet_number <= largest_sent_at_last_cutback_) { | 92 if (packet_number <= largest_sent_at_last_cutback_) { |
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214 congestion_window_ = initial_tcp_congestion_window_; | 208 congestion_window_ = initial_tcp_congestion_window_; |
215 max_congestion_window_ = initial_max_tcp_congestion_window_; | 209 max_congestion_window_ = initial_max_tcp_congestion_window_; |
216 slowstart_threshold_ = initial_max_tcp_congestion_window_; | 210 slowstart_threshold_ = initial_max_tcp_congestion_window_; |
217 } | 211 } |
218 | 212 |
219 CongestionControlType TcpCubicSenderBytes::GetCongestionControlType() const { | 213 CongestionControlType TcpCubicSenderBytes::GetCongestionControlType() const { |
220 return reno_ ? kRenoBytes : kCubicBytes; | 214 return reno_ ? kRenoBytes : kCubicBytes; |
221 } | 215 } |
222 | 216 |
223 } // namespace net | 217 } // namespace net |
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