Add a new QUIC Ack Decimation mode that is reordering tolerant. Protected by FLAG_quic_ack_decimati…

net/quic/quic_protocol.h

 // 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.
 
 #ifndef NET_QUIC_QUIC_PROTOCOL_H_
 #define NET_QUIC_QUIC_PROTOCOL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 122 matching lines @@
 // Reserved ID for the headers stream.
 const QuicStreamId kHeadersStreamId = 3;
 
 // Header key used to identify final offset on data stream when sending HTTP/2
 // trailing headers over QUIC.
 NET_EXPORT_PRIVATE extern const char* const kFinalOffsetHeaderKey;
 
 // Maximum delayed ack time, in ms.
 const int64_t kMaxDelayedAckTimeMs = 25;
 
+// Minimum tail loss probe time in ms.
+static const int64_t kMinTailLossProbeTimeoutMs = 10;
+
 // The timeout before the handshake succeeds.
 const int64_t kInitialIdleTimeoutSecs = 5;
 // The default idle timeout.
 const int64_t kDefaultIdleTimeoutSecs = 30;
 // The maximum idle timeout that can be negotiated.
 const int64_t kMaximumIdleTimeoutSecs = 60 * 10;  // 10 minutes.
 // The default timeout for a connection until the crypto handshake succeeds.
 const int64_t kMaxTimeForCryptoHandshakeSecs = 10;  // 10 secs.
 
 // Default limit on the number of undecryptable packets the connection buffers
@@ skipping 1259 matching lines @@
       : iov(iov), iov_count(iov_count), total_length(total_length) {}
 
   const struct iovec* iov;
   const int iov_count;
   const size_t total_length;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_