Support more topologies

bin/mn_run.py

@@ -7,7 +7,7 @@
 from optparse import OptionParser
 import time
 
-from ripcord.topo import FatTreeTopo
+from ripcord.topo import FatTreeTopo, SingleSwitchTopo, LinearTopo
 
 from mininet.logging_mod import lg, set_loglevel, LEVELS
 from mininet.net import Mininet, init
@@ -16,12 +16,16 @@ from mininet.topo import TreeTopo
 
 # built in topologies, created only when run
 TOPO_DEF = 'minimal'
-TOPOS = {'minimal' :  (lambda: TreeTopo(depth = 2, fanout = 2)),
+TOPOS = {'minimal' :  (lambda: SingleSwitchTopo(k = 2)),
          'tree16' :   (lambda: TreeTopo(depth = 3, fanout = 4)),
          'tree64' :   (lambda: TreeTopo(depth = 4, fanout = 4)),
          'tree1024' : (lambda: TreeTopo(depth = 3, fanout = 32)),
          'fattree4' : (lambda: FatTreeTopo(k = 4)),
-         'fattree6' : (lambda: FatTreeTopo(k = 6))}
+         'fattree6' : (lambda: FatTreeTopo(k = 6)),
+         'single4' :  (lambda: SingleSwitchTopo(k = 4)),
+         'single100' : (lambda: SingleSwitchTopo(k = 100)),
+         'linear2' :  (lambda: LinearTopo(k = 2)),
+         'linear100' : (lambda: LinearTopo(k = 100))}
 
 SWITCH_DEF = 'kernel'
 SWITCHES = {'kernel' : KernelSwitch}

mininet/test/test_nets.py

@@ -7,7 +7,9 @@ Test creation and all-pairs ping for each included mininet topo type.
 from time import sleep
 import unittest
 
-from mininet.net import init, Mininet #, DATAPATHS
+from ripcord.topo import SingleSwitchTopo, LinearTopo
+
+from mininet.net import init, Mininet
 from mininet.node import KernelSwitch, Host, ControllerParams
 from mininet.node import Controller
 from mininet.topo import TreeTopo
@@ -15,18 +17,39 @@ from mininet.topo import TreeTopo
 # temporary, until user-space side is tested
 SWITCHES = {'kernel' : KernelSwitch}
 
-class testMinimal(unittest.TestCase):
+class testSingleSwitch(unittest.TestCase):
-    '''For each datapath type, test ping with a minimal topology.
+    '''For each datapath type, test ping with single switch topologies.'''
-
-    Each topology has two hosts and one switch.
-    '''
 
     def testMinimal(self):
         '''Ping test with both datapaths on minimal topology'''
         init()
         for switch in SWITCHES.values():
             controller_params = ControllerParams(0x0a000000, 8) # 10.0.0.0/8
-            mn = Mininet(TreeTopo(), switch, Host, Controller,
+            mn = Mininet(SingleSwitchTopo(), switch, Host, Controller,
+                         controller_params)
+            dropped = mn.run('ping')
+            self.assertEqual(dropped, 0)
+
+    def testSingle5(self):
+        '''Ping test with both datapaths on 5-host single-switch topology'''
+        init()
+        for switch in SWITCHES.values():
+            controller_params = ControllerParams(0x0a000000, 8) # 10.0.0.0/8
+            mn = Mininet(SingleSwitchTopo(k = 5), switch, Host, Controller,
+                         controller_params)
+            dropped = mn.run('ping')
+            self.assertEqual(dropped, 0)
+
+
+class testLinear(unittest.TestCase):
+    '''For each datapath type, test all-pairs ping with LinearNet.'''
+
+    def testLinear5(self):
+        '''Ping test with both datapaths on a 5-switch topology'''
+        init()
+        for switch in SWITCHES.values():
+            controller_params = ControllerParams(0x0a000000, 8) # 10.0.0.0/8
+            mn = Mininet(LinearTopo(k = 5), switch, Host, Controller,
                          controller_params)
             dropped = mn.run('ping')
             self.assertEqual(dropped, 0)
@@ -35,29 +58,17 @@ class testMinimal(unittest.TestCase):
 class testTree(unittest.TestCase):
     '''For each datapath type, test all-pairs ping with TreeNet.'''
 
-    def testTree16(self):
+    def testTree9(self):
-        '''Ping test with both datapaths on 16-host topology'''
+        '''Ping test with both datapaths on 9-host topology'''
         init()
         for switch in SWITCHES.values():
             controller_params = ControllerParams(0x0a000000, 8) # 10.0.0.0/8
-            tree_topo = TreeTopo(depth = 3, fanout = 4)
+            tree_topo = TreeTopo(depth = 3, fanout = 3)
             mn = Mininet(tree_topo, switch, Host, Controller,
                          controller_params)
             dropped = mn.run('ping')
             self.assertEqual(dropped, 0)
 
-#class testLinear(unittest.TestCase):
-#    '''For each datapath type, test all-pairs ping with LinearNet.'''
-#
-#    def testLinear10(self):
-#        '''Ping test  with both datapaths on 10-switch topology'''
-#        init()
-#        for datapath in DATAPATHS:
-#             k = datapath == 'kernel'
-#             network = network = LinearNet(10, kernel=k)
-#             dropped = network.run(pingTest)
-#             self.assertEqual(dropped, 0)
-
 
 if __name__ == '__main__':
     unittest.main()

mininet/topo.py

@@ -87,9 +87,9 @@ class TreeTopo(StructuredTopo):
             self.enable_all()
 
     def port(self, src, dst):
-        '''Get port number (optional)
+        '''Get port number
 
-        Note that the topological significance of DPIDs in FatTreeTopo enables
+        Note that the topological significance of DPIDs enables
         this function to be implemented statelessly.
 
         @param src source switch DPID