def stop( self ):
"Stop this link"
if self.tunnel:
self.tunnel.terminate()
self.intf1.delete()
self.intf2.delete()
else:
Link.stop( self )
self.tunnel = None
def __init__( self, node1, node2, **kwargs ):
"""Initialize a RemoteLink
see Link() for parameters"""
# Create links on remote node
self.node1 = node1
self.node2 = node2
self.tunnel = None
kwargs.setdefault( 'params1', {} )
kwargs.setdefault( 'params2', {} )
self.cmd = None # satisfy pylint
Link.__init__( self, node1, node2, **kwargs )
def __init__(self, node1, node2, port1=None, port2=None,
intfName1=None, intfName2=None,
addr1=None, addr2=None, params1=None,
params2=None, **kvargs):
Link.__init__(self, node1, node2, port1=port1, port2=port2,
intfName1=intfName1, intfName2=intfName2,
cls1=TCIntf,
cls2=TCIntf,
addr1=addr1, addr2=addr2,
params1=params1,
params2=params2)
def scratchNet( cname='controller', cargs='-v ptcp:' ):
"Create network from scratch using Open vSwitch."
info( "*** Creating nodes\n" )
controller = Node( 'c0', inNamespace=False )
switch = Node( 's0', inNamespace=False )
h0 = Node( 'h0' )
h1 = Node( 'h1' )
info( "*** Creating links\n" )
Link( h0, switch )
Link( h1, switch )
info( "*** Configuring hosts\n" )
h0.setIP( '192.168.123.1/24' )
h1.setIP( '192.168.123.2/24' )
info( str( h0 ) + '\n' )
info( str( h1 ) + '\n' )
info( "*** Starting network using Open vSwitch\n" )
controller.cmd( cname + ' ' + cargs + '&' )
switch.cmd( 'ovs-vsctl del-br dp0' )
switch.cmd( 'ovs-vsctl add-br dp0' )
for intf in switch.intfs.values():
print switch.cmd( 'ovs-vsctl add-port dp0 %s' % intf )
# Note: controller and switch are in root namespace, and we
# can connect via loopback interface
switch.cmd( 'ovs-vsctl set-controller dp0 tcp:127.0.0.1:6633' )
info( '*** Waiting for switch to connect to controller' )
while 'is_connected' not in quietRun( 'ovs-vsctl show' ):
sleep( 1 )
info( '.' )
info( '\n' )
info( "*** Running test\n" )
h0.cmdPrint( 'ping -c1 ' + h1.IP() )
info( "*** Stopping network\n" )
controller.cmd( 'kill %' + cname )
switch.cmd( 'ovs-vsctl del-br dp0' )
switch.deleteIntfs()
info( '\n' )
def status( self ):
"Detailed representation of link"
if self.tunnel:
if self.tunnel.poll() is not None:
status = "Tunnel EXITED %s" % self.tunnel.returncode
else:
status = "Tunnel Running (%s: %s)" % (
self.tunnel.pid, self.cmd )
else:
status = "OK"
result = "%s %s" % ( Link.status( self ), status )
return result
def makeIntfPair( self, intfname1, intfname2, addr1=None, addr2=None,
node1=None, node2=None, deleteIntfs=True ):
"""Create pair of interfaces
intfname1: name of interface 1
intfname2: name of interface 2
(override this method [and possibly delete()]
to change link type)"""
node1 = self.node1 if node1 is None else node1
node2 = self.node2 if node2 is None else node2
server1 = getattr( node1, 'server', 'localhost' )
server2 = getattr( node2, 'server', 'localhost' )
if server1 == server2:
# Link within same server
return Link.makeIntfPair( intfname1, intfname2, addr1, addr2,
node1, node2, deleteIntfs=deleteIntfs )
# Otherwise, make a tunnel
self.tunnel = self.makeTunnel( node1, node2, intfname1, intfname2,
addr1, addr2 )
return self.tunnel
def linkIntfs( node1, node2 ):
"Create link from node1 to node2 and return intfs"
link = Link( node1, node2 )
return link.intf1, link.intf2