A Discrete-Event Network Simulator
API
red-queue-disc-test-suite.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright © 2011 Marcos Talau
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Marcos Talau (talau@users.sourceforge.net)
19  * Modified by: Pasquale Imputato <p.imputato@gmail.com>
20  *
21  */
22 
23 #include "ns3/test.h"
24 #include "ns3/red-queue-disc.h"
25 #include "ns3/packet.h"
26 #include "ns3/uinteger.h"
27 #include "ns3/string.h"
28 #include "ns3/double.h"
29 #include "ns3/log.h"
30 #include "ns3/simulator.h"
31 
32 using namespace ns3;
33 
40 class RedQueueDiscTestItem : public QueueDiscItem {
41 public:
49  RedQueueDiscTestItem (Ptr<Packet> p, const Address & addr, bool ecnCapable);
50  virtual ~RedQueueDiscTestItem ();
51  virtual void AddHeader (void);
52  virtual bool Mark(void);
53 
54 private:
55  RedQueueDiscTestItem ();
60  RedQueueDiscTestItem (const RedQueueDiscTestItem &);
66  RedQueueDiscTestItem &operator = (const RedQueueDiscTestItem &);
67  bool m_ecnCapablePacket;
68 };
69 
70 RedQueueDiscTestItem::RedQueueDiscTestItem (Ptr<Packet> p, const Address & addr, bool ecnCapable)
71  : QueueDiscItem (p, addr, 0),
72  m_ecnCapablePacket (ecnCapable)
73 {
74 }
75 
76 RedQueueDiscTestItem::~RedQueueDiscTestItem ()
77 {
78 }
79 
80 void
81 RedQueueDiscTestItem::AddHeader (void)
82 {
83 }
84 
85 bool
86 RedQueueDiscTestItem::Mark (void)
87 {
88  if (m_ecnCapablePacket)
89  {
90  return true;
91  }
92  return false;
93 }
94 
101 class RedQueueDiscTestCase : public TestCase
102 {
103 public:
104  RedQueueDiscTestCase ();
105  virtual void DoRun (void);
106 private:
114  void Enqueue (Ptr<RedQueueDisc> queue, uint32_t size, uint32_t nPkt, bool ecnCapable);
119  void RunRedTest (QueueSizeUnit mode);
120 };
121 
122 RedQueueDiscTestCase::RedQueueDiscTestCase ()
123  : TestCase ("Sanity check on the red queue implementation")
124 {
125 }
126 
127 void
128 RedQueueDiscTestCase::RunRedTest (QueueSizeUnit mode)
129 {
130  uint32_t pktSize = 0;
131  // 1 for packets; pktSize for bytes
132  uint32_t modeSize = 1;
133  double minTh = 2;
134  double maxTh = 5;
135  uint32_t qSize = 8;
136  Ptr<RedQueueDisc> queue = CreateObject<RedQueueDisc> ();
137 
138  // test 1: simple enqueue/dequeue with no drops
139  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
140  "Verify that we can actually set the attribute MinTh");
141  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
142  "Verify that we can actually set the attribute MaxTh");
143  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
144  true, "Verify that we can actually set the attribute MaxSize");
145  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.002)), true,
146  "Verify that we can actually set the attribute QW");
147 
148  Address dest;
149 
150  if (mode == QueueSizeUnit::BYTES)
151  {
152  // pktSize should be same as MeanPktSize to avoid performance gap between byte and packet mode
153  pktSize = 500;
154  modeSize = pktSize;
155  queue->SetTh (minTh * modeSize, maxTh * modeSize);
156  queue->SetMaxSize (QueueSize (mode, qSize * modeSize));
157  }
158 
159  Ptr<Packet> p1, p2, p3, p4, p5, p6, p7, p8;
160  p1 = Create<Packet> (pktSize);
161  p2 = Create<Packet> (pktSize);
162  p3 = Create<Packet> (pktSize);
163  p4 = Create<Packet> (pktSize);
164  p5 = Create<Packet> (pktSize);
165  p6 = Create<Packet> (pktSize);
166  p7 = Create<Packet> (pktSize);
167  p8 = Create<Packet> (pktSize);
168 
169  queue->Initialize ();
170  NS_TEST_EXPECT_MSG_EQ (queue->GetCurrentSize ().GetValue (), 0 * modeSize, "There should be no packets in there");
171  queue->Enqueue (Create<RedQueueDiscTestItem> (p1, dest, false));
172  NS_TEST_EXPECT_MSG_EQ (queue->GetCurrentSize ().GetValue (), 1 * modeSize, "There should be one packet in there");
173  queue->Enqueue (Create<RedQueueDiscTestItem> (p2, dest, false));
174  NS_TEST_EXPECT_MSG_EQ (queue->GetCurrentSize ().GetValue (), 2 * modeSize, "There should be two packets in there");
175  queue->Enqueue (Create<RedQueueDiscTestItem> (p3, dest, false));
176  queue->Enqueue (Create<RedQueueDiscTestItem> (p4, dest, false));
177  queue->Enqueue (Create<RedQueueDiscTestItem> (p5, dest, false));
178  queue->Enqueue (Create<RedQueueDiscTestItem> (p6, dest, false));
179  queue->Enqueue (Create<RedQueueDiscTestItem> (p7, dest, false));
180  queue->Enqueue (Create<RedQueueDiscTestItem> (p8, dest, false));
181  NS_TEST_EXPECT_MSG_EQ (queue->GetCurrentSize ().GetValue (), 8 * modeSize, "There should be eight packets in there");
182 
183  Ptr<QueueDiscItem> item;
184 
185  item = queue->Dequeue ();
186  NS_TEST_EXPECT_MSG_EQ ((item != 0), true, "I want to remove the first packet");
187  NS_TEST_EXPECT_MSG_EQ (queue->GetCurrentSize ().GetValue (), 7 * modeSize, "There should be seven packets in there");
188  NS_TEST_EXPECT_MSG_EQ (item->GetPacket ()->GetUid (), p1->GetUid (), "was this the first packet ?");
189 
190  item = queue->Dequeue ();
191  NS_TEST_EXPECT_MSG_EQ ((item != 0), true, "I want to remove the second packet");
192  NS_TEST_EXPECT_MSG_EQ (queue->GetCurrentSize ().GetValue (), 6 * modeSize, "There should be six packet in there");
193  NS_TEST_EXPECT_MSG_EQ (item->GetPacket ()->GetUid (), p2->GetUid (), "Was this the second packet ?");
194 
195  item = queue->Dequeue ();
196  NS_TEST_EXPECT_MSG_EQ ((item != 0), true, "I want to remove the third packet");
197  NS_TEST_EXPECT_MSG_EQ (queue->GetCurrentSize ().GetValue (), 5 * modeSize, "There should be five packets in there");
198  NS_TEST_EXPECT_MSG_EQ (item->GetPacket ()->GetUid (), p3->GetUid (), "Was this the third packet ?");
199 
200  item = queue->Dequeue ();
201  item = queue->Dequeue ();
202  item = queue->Dequeue ();
203  item = queue->Dequeue ();
204  item = queue->Dequeue ();
205 
206  item = queue->Dequeue ();
207  NS_TEST_EXPECT_MSG_EQ ((item == 0), true, "There are really no packets in there");
208 
209 
210  // test 2: more data, but with no drops
211  queue = CreateObject<RedQueueDisc> ();
212  minTh = 70 * modeSize;
213  maxTh = 150 * modeSize;
214  qSize = 300 * modeSize;
215  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
216  "Verify that we can actually set the attribute MinTh");
217  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
218  "Verify that we can actually set the attribute MaxTh");
219  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
220  true, "Verify that we can actually set the attribute MaxSize");
221  queue->Initialize ();
222  Enqueue (queue, pktSize, 300, false);
223  QueueDisc::Stats st = queue->GetStats ();
224  NS_TEST_EXPECT_MSG_EQ (st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP), 0,
225  "There should be zero unforced drops");
226  NS_TEST_EXPECT_MSG_EQ (st.GetNDroppedPackets (RedQueueDisc::FORCED_DROP), 0,
227  "There should be zero forced dropps");
228  NS_TEST_EXPECT_MSG_EQ (st.GetNDroppedPackets (QueueDisc::INTERNAL_QUEUE_DROP), 0,
229  "There should be zero drops due to queue limit");
230 
231  // save number of drops from tests
232  struct d {
233  uint32_t test3;
234  uint32_t test4;
235  uint32_t test5;
236  uint32_t test6;
237  uint32_t test7;
238  uint32_t test11;
239  uint32_t test12;
240  uint32_t test13;
241  } drop;
242 
243 
244  // test 3: more data, now drops due QW change
245  queue = CreateObject<RedQueueDisc> ();
246  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
247  "Verify that we can actually set the attribute MinTh");
248  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
249  "Verify that we can actually set the attribute MaxTh");
250  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
251  true, "Verify that we can actually set the attribute MaxSize");
252  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.020)), true,
253  "Verify that we can actually set the attribute QW");
254  queue->Initialize ();
255  Enqueue (queue, pktSize, 300, false);
256  st = queue->GetStats ();
257  drop.test3 = st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP)
258  + st.GetNDroppedPackets (RedQueueDisc::FORCED_DROP)
259  + st.GetNDroppedPackets (QueueDisc::INTERNAL_QUEUE_DROP);
260  NS_TEST_EXPECT_MSG_NE (drop.test3, 0, "There should be some dropped packets");
261 
262 
263  // test 4: reduced maxTh, this causes more drops
264  maxTh = 100 * modeSize;
265  queue = CreateObject<RedQueueDisc> ();
266  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
267  "Verify that we can actually set the attribute MinTh");
268  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
269  "Verify that we can actually set the attribute MaxTh");
270  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
271  true, "Verify that we can actually set the attribute MaxSize");
272  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.020)), true,
273  "Verify that we can actually set the attribute QW");
274  queue->Initialize ();
275  Enqueue (queue, pktSize, 300, false);
276  st = queue->GetStats ();
277  drop.test4 = st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP)
278  + st.GetNDroppedPackets (RedQueueDisc::FORCED_DROP)
279  + st.GetNDroppedPackets (QueueDisc::INTERNAL_QUEUE_DROP);
280  NS_TEST_EXPECT_MSG_GT (drop.test4, drop.test3, "Test 4 should have more drops than test 3");
281 
282 
283  // test 5: change drop probability to a high value (LInterm)
284  maxTh = 150 * modeSize;
285  queue = CreateObject<RedQueueDisc> ();
286  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
287  "Verify that we can actually set the attribute MinTh");
288  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
289  "Verify that we can actually set the attribute MaxTh");
290  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
291  true, "Verify that we can actually set the attribute MaxSize");
292  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.020)), true,
293  "Verify that we can actually set the attribute QW");
294  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("LInterm", DoubleValue (5)), true,
295  "Verify that we can actually set the attribute LInterm");
296  queue->Initialize ();
297  Enqueue (queue, pktSize, 300, false);
298  st = queue->GetStats ();
299  drop.test5 = st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP)
300  + st.GetNDroppedPackets (RedQueueDisc::FORCED_DROP)
301  + st.GetNDroppedPackets (QueueDisc::INTERNAL_QUEUE_DROP);
302  NS_TEST_EXPECT_MSG_GT (drop.test5, drop.test3, "Test 5 should have more drops than test 3");
303 
304 
305  // test 6: disable Gentle param
306  queue = CreateObject<RedQueueDisc> ();
307  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
308  "Verify that we can actually set the attribute MinTh");
309  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
310  "Verify that we can actually set the attribute MaxTh");
311  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
312  true, "Verify that we can actually set the attribute MaxSize");
313  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.020)), true,
314  "Verify that we can actually set the attribute QW");
315  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Gentle", BooleanValue (false)), true,
316  "Verify that we can actually set the attribute Gentle");
317  queue->Initialize ();
318  Enqueue (queue, pktSize, 300, false);
319  st = queue->GetStats ();
320  drop.test6 = st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP)
321  + st.GetNDroppedPackets (RedQueueDisc::FORCED_DROP)
322  + st.GetNDroppedPackets (QueueDisc::INTERNAL_QUEUE_DROP);
323  NS_TEST_EXPECT_MSG_GT (drop.test6, drop.test3, "Test 6 should have more drops than test 3");
324 
325 
326  // test 7: disable Wait param
327  queue = CreateObject<RedQueueDisc> ();
328  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
329  "Verify that we can actually set the attribute MinTh");
330  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
331  "Verify that we can actually set the attribute MaxTh");
332  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
333  true, "Verify that we can actually set the attribute MaxSize");
334  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.020)), true,
335  "Verify that we can actually set the attribute QW");
336  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Wait", BooleanValue (false)), true,
337  "Verify that we can actually set the attribute Wait");
338  queue->Initialize ();
339  Enqueue (queue, pktSize, 300, false);
340  st = queue->GetStats ();
341  drop.test7 = st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP)
342  + st.GetNDroppedPackets (RedQueueDisc::FORCED_DROP)
343  + st.GetNDroppedPackets (QueueDisc::INTERNAL_QUEUE_DROP);
344  NS_TEST_EXPECT_MSG_GT (drop.test7, drop.test3, "Test 7 should have more drops than test 3");
345 
346 
347  // test 8: RED queue disc is ECN enabled, but packets are not ECN capable
348  queue = CreateObject<RedQueueDisc> ();
349  minTh = 30 * modeSize;
350  maxTh = 90 * modeSize;
351  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
352  "Verify that we can actually set the attribute MinTh");
353  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
354  "Verify that we can actually set the attribute MaxTh");
355  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
356  true, "Verify that we can actually set the attribute MaxSize");
357  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.002)), true,
358  "Verify that we can actually set the attribute QW");
359  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("LInterm", DoubleValue (2)), true,
360  "Verify that we can actually set the attribute LInterm");
361  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Gentle", BooleanValue (true)), true,
362  "Verify that we can actually set the attribute Gentle");
363  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("UseEcn", BooleanValue (true)), true,
364  "Verify that we can actually set the attribute UseECN");
365  queue->Initialize ();
366  Enqueue (queue, pktSize, 300, false);
367  st = queue->GetStats ();
368  // Packets are not ECN capable, so there should be only unforced drops, no unforced marks
369  NS_TEST_EXPECT_MSG_NE (st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP), 0,
370  "There should be some unforced drops");
371  NS_TEST_EXPECT_MSG_EQ (st.GetNMarkedPackets (RedQueueDisc::UNFORCED_MARK), 0,
372  "There should be no unforced marks");
373 
374 
375  // test 9: Packets are ECN capable, but RED queue disc is not ECN enabled
376  queue = CreateObject<RedQueueDisc> ();
377  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
378  "Verify that we can actually set the attribute MinTh");
379  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
380  "Verify that we can actually set the attribute MaxTh");
381  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
382  true, "Verify that we can actually set the attribute MaxSize");
383  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.002)), true,
384  "Verify that we can actually set the attribute QW");
385  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("LInterm", DoubleValue (2)), true,
386  "Verify that we can actually set the attribute LInterm");
387  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Gentle", BooleanValue (true)), true,
388  "Verify that we can actually set the attribute Gentle");
389  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("UseEcn", BooleanValue (false)), true,
390  "Verify that we can actually set the attribute UseECN");
391  queue->Initialize ();
392  Enqueue (queue, pktSize, 300, true);
393  st = queue->GetStats ();
394  // RED queue disc is not ECN enabled, so there should be only unforced drops, no unforced marks
395  NS_TEST_EXPECT_MSG_NE (st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP), 0,
396  "There should be some unforced drops");
397  NS_TEST_EXPECT_MSG_EQ (st.GetNMarkedPackets (RedQueueDisc::UNFORCED_MARK), 0,
398  "There should be no unforced marks");
399 
400 
401  // test 10: Packets are ECN capable and RED queue disc is ECN enabled
402  queue = CreateObject<RedQueueDisc> ();
403  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
404  "Verify that we can actually set the attribute MinTh");
405  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
406  "Verify that we can actually set the attribute MaxTh");
407  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
408  true, "Verify that we can actually set the attribute MaxSize");
409  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.002)), true,
410  "Verify that we can actually set the attribute QW");
411  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("LInterm", DoubleValue (2)), true,
412  "Verify that we can actually set the attribute LInterm");
413  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Gentle", BooleanValue (true)), true,
414  "Verify that we can actually set the attribute Gentle");
415  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("UseEcn", BooleanValue (true)), true,
416  "Verify that we can actually set the attribute UseECN");
417  queue->Initialize ();
418  Enqueue (queue, pktSize, 300, true);
419  st = queue->GetStats ();
420  // Packets are ECN capable, RED queue disc is ECN enabled; there should be only unforced marks, no unforced drops
421  NS_TEST_EXPECT_MSG_EQ (st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP), 0,
422  "There should be no unforced drops");
423  NS_TEST_EXPECT_MSG_NE (st.GetNMarkedPackets (RedQueueDisc::UNFORCED_MARK), 0,
424  "There should be some unforced marks");
425 
426 
427  // test 11: RED with default parameter settings, linear drop probability and fixed m_curMaxP
428  queue = CreateObject<RedQueueDisc> ();
429  minTh = 30 * modeSize;
430  maxTh = 90 * modeSize;
431  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
432  "Verify that we can actually set the attribute MinTh");
433  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
434  "Verify that we can actually set the attribute MaxTh");
435  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
436  true, "Verify that we can actually set the attribute MaxSize");
437  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.002)), true,
438  "Verify that we can actually set the attribute QW");
439  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("LInterm", DoubleValue (2)), true,
440  "Verify that we can actually set the attribute LInterm");
441  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Gentle", BooleanValue (true)), true,
442  "Verify that we can actually set the attribute Gentle");
443  queue->Initialize ();
444  Enqueue (queue, pktSize, 300, false);
445  st = queue->GetStats ();
446  drop.test11 = st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP);
447  NS_TEST_EXPECT_MSG_NE (drop.test11, 0, "There should some dropped packets due to probability mark");
448 
449 
450  // test 12: Feng's Adaptive RED with default parameter settings and varying m_curMaxP
451  queue = CreateObject<RedQueueDisc> ();
452  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
453  "Verify that we can actually set the attribute MinTh");
454  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
455  "Verify that we can actually set the attribute MaxTh");
456  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
457  true, "Verify that we can actually set the attribute MaxSize");
458  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.002)), true,
459  "Verify that we can actually set the attribute QW");
460  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("LInterm", DoubleValue (2)), true,
461  "Verify that we can actually set the attribute LInterm");
462  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Gentle", BooleanValue (true)), true,
463  "Verify that we can actually set the attribute Gentle");
464  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("FengAdaptive", BooleanValue (true)), true,
465  "Verify that we can actually set the attribute FengAdaptive");
466  queue->Initialize ();
467  Enqueue (queue, pktSize, 300, false);
468  st = queue->GetStats ();
469  drop.test12 = st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP);
470  NS_TEST_EXPECT_MSG_LT (drop.test12, drop.test11, "Test 12 should have less drops due to probability mark than test 11");
471 
472 
473  // test 13: RED with Nonlinear drop probability
474  queue = CreateObject<RedQueueDisc> ();
475  minTh = 30 * modeSize;
476  maxTh = 90 * modeSize;
477  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinTh", DoubleValue (minTh)), true,
478  "Verify that we can actually set the attribute MinTh");
479  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxTh", DoubleValue (maxTh)), true,
480  "Verify that we can actually set the attribute MaxTh");
481  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxSize", QueueSizeValue (QueueSize (mode, qSize))),
482  true, "Verify that we can actually set the attribute MaxSize");
483  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("QW", DoubleValue (0.002)), true,
484  "Verify that we can actually set the attribute QW");
485  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("LInterm", DoubleValue (2)), true,
486  "Verify that we can actually set the attribute LInterm");
487  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Gentle", BooleanValue (true)), true,
488  "Verify that we can actually set the attribute Gentle");
489  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("NLRED", BooleanValue (true)), true,
490  "Verify that we can actually set the attribute NLRED");
491  queue->Initialize ();
492  Enqueue (queue, pktSize, 300, false);
493  st = queue->GetStats ();
494  drop.test13 = st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP);
495  NS_TEST_EXPECT_MSG_LT (drop.test13, drop.test11, "Test 13 should have less drops due to probability mark than test 11");
496 
497 }
498 
499 void
500 RedQueueDiscTestCase::Enqueue (Ptr<RedQueueDisc> queue, uint32_t size, uint32_t nPkt, bool ecnCapable)
501 {
502  Address dest;
503  for (uint32_t i = 0; i < nPkt; i++)
504  {
505  queue->Enqueue (Create<RedQueueDiscTestItem> (Create<Packet> (size), dest, ecnCapable));
506  }
507 }
508 
509 void
510 RedQueueDiscTestCase::DoRun (void)
511 {
512  RunRedTest (QueueSizeUnit::PACKETS);
513  RunRedTest (QueueSizeUnit::BYTES);
514  Simulator::Destroy ();
515 
516 }
517 
524 static class RedQueueDiscTestSuite : public TestSuite
525 {
526 public:
527  RedQueueDiscTestSuite ()
528  : TestSuite ("red-queue-disc", UNIT)
529  {
530  AddTestCase (new RedQueueDiscTestCase (), TestCase::QUICK);
531  }
532 } g_redQueueTestSuite;
ns3::QueueDisc::Stats
Structure that keeps the queue disc statistics.
Definition: queue-disc.h:185
ns3::Packet::GetUid
uint64_t GetUid(void) const
Returns the packet&#39;s Uid.
Definition: packet.cc:390
ns3::BooleanValue
AttributeValue implementation for Boolean.
Definition: boolean.h:36
ns3::QueueSize
Class for representing queue sizes.
Definition: queue-size.h:94
ns3::QueueDisc::Enqueue
bool Enqueue(Ptr< QueueDiscItem > item)
Pass a packet to store to the queue discipline.
Definition: queue-disc.cc:861
ns3::QueueSize::GetValue
uint32_t GetValue() const
Get the underlying value.
Definition: queue-size.cc:175
ns3::RedQueueDisc::SetTh
void SetTh(double minTh, double maxTh)
Set the thresh limits of RED.
Definition: red-queue-disc.cc:323
ns3::QueueSizeUnit
QueueSizeUnit
Enumeration of the operating modes of queues.
Definition: queue-size.h:42
RedQueueDiscTestItem::AddHeader
virtual void AddHeader(void)
Add the header to the packet.
Definition: red-queue-disc-test-suite.cc:81
ns3::QueueDisc::GetCurrentSize
QueueSize GetCurrentSize(void)
Get the current size of the queue disc in bytes, if operating in bytes mode, or packets, otherwise.
Definition: queue-disc.cc:523
ns3::TestSuite
A suite of tests to run.
Definition: test.h:1343
NS_TEST_EXPECT_MSG_EQ
#define NS_TEST_EXPECT_MSG_EQ(actual, limit, msg)
Test that an actual and expected (limit) value are equal and report if not.
Definition: test.h:283
ns3::ObjectBase::SetAttributeFailSafe
bool SetAttributeFailSafe(std::string name, const AttributeValue &value)
Set a single attribute without raising errors.
Definition: object-base.cc:205
ns3::QueueDiscItem
QueueDiscItem is the abstract base class for items that are stored in a queue disc.
Definition: queue-item.h:148
RedQueueDiscTestItem::m_ecnCapablePacket
bool m_ecnCapablePacket
ECN capable packet?
Definition: red-queue-disc-test-suite.cc:67
ns3::TestCase
encapsulates test code
Definition: test.h:1153
ns3::Address
a polymophic address class
Definition: address.h:90
RedQueueDiscTestSuite
Red Queue Disc Test Suite.
Definition: red-queue-disc-test-suite.cc:524
RedQueueDiscTestItem
Red Queue Disc Test Item.
Definition: red-queue-disc-test-suite.cc:40
ns3::TestCase::AddTestCase
void AddTestCase(TestCase *testCase, TestDuration duration=QUICK)
Add an individual child TestCase to this test suite.
Definition: test.cc:299
ns3::QueueDisc::Stats::GetNDroppedPackets
uint32_t GetNDroppedPackets(std::string reason) const
Get the number of packets dropped for the given reason.
Definition: queue-disc.cc:110
ns3::PACKETS
Use number of packets for queue size.
Definition: queue-size.h:44
RedQueueDiscTestItem::Mark
virtual bool Mark(void)
Marks the packet as a substitute for dropping it, such as for Explicit Congestion Notification...
Definition: red-queue-disc-test-suite.cc:86
ns3::QueueDisc::GetStats
const Stats & GetStats(void)
Retrieve all the collected statistics.
Definition: queue-disc.cc:421
RedQueueDiscTestCase::RunRedTest
void RunRedTest(QueueSizeUnit mode)
Run RED test function.
Definition: red-queue-disc-test-suite.cc:128
ns3::QueueDisc::Dequeue
Ptr< QueueDiscItem > Dequeue(void)
Extract from the queue disc the packet that has been dequeued by calling Peek, if any...
Definition: queue-disc.cc:896
ns3
Every class exported by the ns3 library is enclosed in the ns3 namespace.
RedQueueDiscTestCase
Red Queue Disc Test Case.
Definition: red-queue-disc-test-suite.cc:101
ns3::QueueDisc::Stats::GetNMarkedPackets
uint32_t GetNMarkedPackets(std::string reason) const
Get the number of packets marked for the given reason.
Definition: queue-disc.cc:152
NS_TEST_EXPECT_MSG_NE
#define NS_TEST_EXPECT_MSG_NE(actual, limit, msg)
Test that an actual and expected (limit) value are not equal and report if not.
Definition: test.h:737
NS_TEST_EXPECT_MSG_GT
#define NS_TEST_EXPECT_MSG_GT(actual, limit, msg)
Test that an actual value is greater than a limit and report if not.
Definition: test.h:1088
g_redQueueTestSuite
RedQueueDiscTestSuite g_redQueueTestSuite
the test suite
ns3::QueueDisc::SetMaxSize
bool SetMaxSize(QueueSize size)
Set the maximum size of the queue disc.
Definition: queue-disc.cc:482
NS_TEST_EXPECT_MSG_LT
#define NS_TEST_EXPECT_MSG_LT(actual, limit, msg)
Test that an actual value is less than a limit and report if not.
Definition: test.h:901
ns3::TestSuite::UNIT
This test suite implements a Unit Test.
Definition: test.h:1353
pktSize
uint32_t pktSize
packet size used for the simulation (in bytes)
Definition: wifi-bianchi.cc:86
ns3::DoubleValue
This class can be used to hold variables of floating point type such as &#39;double&#39; or &#39;float&#39;...
Definition: double.h:41
ns3::BYTES
Use number of bytes for queue size.
Definition: queue-size.h:45
ns3::Object::Initialize
void Initialize(void)
Invoke DoInitialize on all Objects aggregated to this one.
Definition: object.cc:183
RedQueueDiscTestCase::DoRun
virtual void DoRun(void)
Implementation to actually run this TestCase.
Definition: red-queue-disc-test-suite.cc:510
RedQueueDiscTestCase::Enqueue
void Enqueue(Ptr< RedQueueDisc > queue, uint32_t size, uint32_t nPkt, bool ecnCapable)
Enqueue function.
Definition: red-queue-disc-test-suite.cc:500