traffic-control: Remove unused variable in COBALT

src/traffic-control/doc/cobalt.rst

@@ -86,8 +86,6 @@ Attributes
 The key attributes that the CobaltQueue Disc class holds include the following:
 
 * ``MaxSize:`` The maximum number of packets/bytes accepted by this queue disc.
-* ``MinBytes:`` The Cobalt algorithm minbytes parameter. The default value is
-1500 bytes.
 * ``Interval:`` The sliding-minimum window. The default value is 100 ms.
 * ``Target:`` The Cobalt algorithm target queue delay. The default value is
 5 ms.

src/traffic-control/model/cobalt-queue-disc.cc

@@ -54,11 +54,6 @@ TypeId CobaltQueueDisc::GetTypeId (void)
                    MakeQueueSizeAccessor (&QueueDisc::SetMaxSize,
                                           &QueueDisc::GetMaxSize),
                    MakeQueueSizeChecker ())
-    .AddAttribute ("MinBytes",
-                   "The Cobalt algorithm minbytes parameter.",
-                   UintegerValue (1500),
-                   MakeUintegerAccessor (&CobaltQueueDisc::m_minBytes),
-                   MakeUintegerChecker<uint32_t> ())
     .AddAttribute ("Interval",
                    "The Cobalt algorithm interval",
                    StringValue ("100ms"),

src/traffic-control/model/cobalt-queue-disc.h

@@ -214,8 +214,6 @@ private:
   // Common to CoDel and Blue
   // Maintained by Cobalt
   Stats m_stats;                          //!< Cobalt statistics
-  // Supplied by user
-  uint32_t m_minBytes;                    //!< Minimum bytes in queue to allow a packet drop
 
   // Codel parameters
   // Maintained by Cobalt

src/traffic-control/test/cobalt-queue-disc-test-suite.cc

@@ -140,8 +140,6 @@ CobaltQueueDiscBasicEnqueueDequeue::DoRun (void)
 
   Address dest;
 
-  NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MinBytes", UintegerValue (pktSize)), true,
-                         "Verify that we can actually set the attribute MinBytes");
   NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Interval", StringValue ("50ms")), true,
                          "Verify that we can actually set the attribute Interval");
   NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("Target", StringValue ("4ms")), true,