1 files changed, 197 insertions, 0 deletions
diff --git a/icnet/transport/icnet_transport_raaqm_data_path.cc b/icnet/transport/icnet_transport_raaqm_data_path.cc
new file mode 100644
index 00000000..dfef6762
--- /dev/null
+++ b/icnet/transport/icnet_transport_raaqm_data_path.cc
@@ -0,0 +1,197 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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 "icnet_transport_raaqm_data_path.h"
+
+namespace icnet {
+
+RaaqmDataPath::RaaqmDataPath(double drop_factor,
+                             double minimum_drop_probability,
+                             unsigned new_timer,
+                             unsigned int samples,
+                             uint64_t new_rtt,
+                             uint64_t new_rtt_min,
+                             uint64_t new_rtt_max,
+                             unsigned new_pd)
+
+    : drop_factor_(drop_factor),
+      minimum_drop_probability_(minimum_drop_probability),
+      timer_(new_timer),
+      samples_(samples),
+      rtt_(new_rtt),
+      rtt_min_(new_rtt_min),
+      rtt_max_(new_rtt_max),
+      prop_delay_(new_pd),
+      new_prop_delay_(false),
+      drop_prob_(0),
+      packets_received_(0),
+      last_packets_received_(0),
+      m_packets_bytes_received_(0),
+      last_packets_bytes_received_(0),
+      raw_data_bytes_received_(0),
+      last_raw_data_bytes_received_(0),
+      average_rtt_(0),
+      alpha_(ALPHA) {
+  gettimeofday(&previous_call_of_path_reporter_, 0);
+  gettimeofday(&m_last_received_pkt_, 0);
+}
+
+RaaqmDataPath &RaaqmDataPath::pathReporter() {
+  struct timeval now;
+  gettimeofday(&now, 0);
+
+  double rate, delta_t;
+
+  delta_t = getMicroSeconds(now) - getMicroSeconds(previous_call_of_path_reporter_);
+  rate = (m_packets_bytes_received_ - last_packets_bytes_received_) * 8 / delta_t; // MB/s
+  std::cout << "RaaqmDataPath status report: " << "at time " << (long) now.tv_sec << "." << (unsigned) now.tv_usec
+            << " sec:\n" << (void *) this << " path\n" << "Packets Received: "
+            << (packets_received_ - last_packets_received_) << "\n" << "delta_t " << delta_t << " [us]\n" << "rate "
+            << rate << " [Mbps]\n" << "Last RTT " << rtt_ << " [us]\n" << "Max RTT " << rtt_max_ << " [us]\n"
+            << "Min RTT " << rtt_min_ << " [us]\n" << "Prop delay " << prop_delay_ << " [us]\n";
+  last_packets_received_ = packets_received_;
+  last_packets_bytes_received_ = m_packets_bytes_received_;
+  gettimeofday(&previous_call_of_path_reporter_, 0);
+
+  return *this;
+}
+
+RaaqmDataPath &RaaqmDataPath::insertNewRtt(uint64_t new_rtt) {
+  rtt_ = new_rtt;
+  rtt_samples_.get<byArrival>().push_back(new_rtt);
+
+  if (rtt_samples_.get<byArrival>().size() > samples_) {
+    rtt_samples_.get<byArrival>().pop_front();
+  }
+
+  rtt_max_ = *(rtt_samples_.get<byOrder>().rbegin());
+  rtt_min_ = *(rtt_samples_.get<byOrder>().begin());
+
+  if (rtt_min_ < prop_delay_) {
+    new_prop_delay_ = true;
+    prop_delay_ = rtt_min_;
+  }
+
+  gettimeofday(&m_last_received_pkt_, 0);
+
+  return *this;
+}
+
+RaaqmDataPath &RaaqmDataPath::updateReceivedStats(std::size_t packet_size, std::size_t data_size) {
+  packets_received_++;
+  m_packets_bytes_received_ += packet_size;
+  raw_data_bytes_received_ += data_size;
+
+  return *this;
+}
+
+double RaaqmDataPath::getDropFactor() {
+  return drop_factor_;
+}
+
+double RaaqmDataPath::getDropProb() {
+  return drop_prob_;
+}
+
+RaaqmDataPath &RaaqmDataPath::setDropProb(double dropProb) {
+  drop_prob_ = dropProb;
+
+  return *this;
+}
+
+double RaaqmDataPath::getMinimumDropProbability() {
+  return minimum_drop_probability_;
+}
+
+double RaaqmDataPath::getTimer() {
+  return timer_;
+}
+
+RaaqmDataPath &RaaqmDataPath::smoothTimer() {
+  timer_ = (1 - TIMEOUT_SMOOTHER) * timer_ + (TIMEOUT_SMOOTHER) * rtt_ * (TIMEOUT_RATIO);
+
+  return *this;
+}
+
+double RaaqmDataPath::getRtt() {
+  return rtt_;
+}
+
+double RaaqmDataPath::getAverageRtt() {
+  return average_rtt_;
+}
+
+double RaaqmDataPath::getRttMax() {
+  return rtt_max_;
+}
+
+double RaaqmDataPath::getRttMin() {
+  return rtt_min_;
+}
+
+unsigned RaaqmDataPath::getSampleValue() {
+  return samples_;
+}
+
+unsigned RaaqmDataPath::getRttQueueSize() {
+  return rtt_samples_.get<byArrival>().size();
+}
+
+RaaqmDataPath &RaaqmDataPath::updateDropProb() {
+
+  drop_prob_ = 0.0;
+
+  if (getSampleValue() == getRttQueueSize()) {
+    if (rtt_max_ == rtt_min_) {
+      drop_prob_ = minimum_drop_probability_;
+    } else {
+      drop_prob_ = minimum_drop_probability_ + drop_factor_ * (rtt_ - rtt_min_) / (rtt_max_ - rtt_min_);
+    }
+  }
+
+  return *this;
+}
+
+double RaaqmDataPath::getMicroSeconds(struct timeval &time) {
+  return (double) (time.tv_sec) * 1000000 + (double) (time.tv_usec);
+}
+
+void RaaqmDataPath::setAlpha(double alpha) {
+  if (alpha >= 0 && alpha <= 1) {
+    alpha_ = alpha;
+  }
+}
+
+bool RaaqmDataPath::newPropagationDelayAvailable() {
+  bool r = new_prop_delay_;
+  new_prop_delay_ = false;
+  return r;
+}
+
+unsigned int RaaqmDataPath::getPropagationDelay() {
+  return prop_delay_;
+}
+
+bool RaaqmDataPath::isStale() {
+  struct timeval now;
+  gettimeofday(&now, 0);
+  double time = getMicroSeconds(now) - getMicroSeconds(m_last_received_pkt_);
+  if (time > 2000000) {
+    return true;
+  }
+  return false;
+}
+
+} // end namespace icnet