lab/mininet
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

Fix CLI commands.

Browse Source
This commit is contained in:
Bob Lantz
2012-03-11 19:44:04 -07:00
parent 14ff3ad3d0
commit 8856d284c0
5 changed files with 122 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mininet/node.py
+81 -43
View File
@@ -54,7 +54,7 @@ from mininet.log import info, error, warn, debug
from mininet.util import quietRun, errRun, errFail, moveIntf, isShellBuiltin
from mininet.util import numCores
from mininet.moduledeps import moduleDeps, pathCheck, OVS_KMOD, OF_KMOD, TUN
from mininet.link import Link
from mininet.link import Link, Intf
class Node( object ):
"""A virtual network node is simply a shell in a network namespace.
@@ -316,16 +316,19 @@ class Node( object ):
else:
return intf
def linksTo( self, node):
"Return [ link1, link2...] for all links from self to node."
def connectionsTo( self, node):
"Return [ intf1, intf2... ] for all intfs that connect self to node."
# We could optimize this if it is important
links = []
for intf in self.intfs:
connections = []
for intf in self.intfList():
link = intf.link
nodes = ( link.intf1.node, link.intf2.node )
if self in nodes and node in nodes:
links.append( link )
return links
if link:
node1, node2 = link.intf1.node, link.intf2.node
if node1 == self and node2 == node:
connections += [ ( intf, link.intf2 ) ]
elif node1 == node and node2 == self:
connections += [ ( intf, link.intf1 ) ]
return connections
def deleteIntfs( self ):
"Delete all of our interfaces."
@@ -418,8 +421,8 @@ class Node( object ):
results[ name ] = result
return result
def config( self, mac=None, ip=None, ifconfig=None,
defaultRoute=None, **_params ):
def config( self, mac=None, ip=None,
defaultRoute=None, lo='up', **_params ):
"""Configure Node according to (optional) parameters:
mac: MAC address for default interface
ip: IP address for default interface
@@ -432,8 +435,9 @@ class Node( object ):
r = {}
self.setParam( r, 'setMAC', mac=mac )
self.setParam( r, 'setIP', ip=ip )
self.setParam( r, 'ifconfig', ifconfig=ifconfig )
self.setParam( r, 'defaultRoute', defaultRoute=defaultRoute )
# This should be examined
self.cmd( 'ifconfig lo ' + lo )
return r
def configDefault( self, **moreParams ):
@@ -457,9 +461,16 @@ class Node( object ):
"The names of our interfaces sorted by port number"
return [ str( i ) for i in self.intfList() ]
def __repr__( self ):
"More informative string representation"
intfs = ( ','.join( [ '%s:%s' % ( i.name, i.IP() )
for i in self.intfList() ] ) )
return '<%s %s: %s pid=%s> ' % (
self.__class__.__name__, self.name, intfs, self.pid )
def __str__( self ):
return '%s: IP=%s intfs=%s pid=%s' % (
self.name, self.IP(), ','.join( self.intfNames() ), self.pid )
"Abbreviated string representation"
return self.name
# Automatic class setup support
@@ -634,9 +645,8 @@ class Switch( Node ):
self.dpid = dpid if dpid else self.defaultDpid()
self.opts = opts
self.listenPort = listenPort
if self.listenPort:
self.opts += ' --listen=ptcp:%i ' % self.listenPort
self.controlIntf = None
if not self.inNamespace:
self.controlIntf = Intf( 'lo', self )
def defaultDpid( self ):
"Derive dpid from switch name, s1 -> 1"
@@ -646,11 +656,11 @@ class Switch( Node ):
return dpid
def defaultIntf( self ):
"Return control interface, if any"
if not self.inNamespace:
error( "error: tried to access control interface of "
" switch %s in root namespace" % self.name )
return self.controlIntf
"Return control interface"
if self.controlIntf:
return self.controlIntf
else:
return Node.defaultIntf( self )
def sendCmd( self, *cmd, **kwargs ):
"""Send command to Node.
@@ -662,6 +672,13 @@ class Switch( Node ):
error( '*** Error: %s has execed and cannot accept commands' %
self.name )
def __repr__( self ):
"More informative string representation"
intfs = ( ','.join( [ '%s:%s' % ( i.name, i.IP() )
for i in self.intfList() ] ) )
return '<%s %s: %s pid=%s> ' % (
self.__class__.__name__, self.name, intfs, self.pid )
class UserSwitch( Switch ):
"User-space switch."
@@ -671,6 +688,8 @@ class UserSwitch( Switch ):
Switch.__init__( self, name, **kwargs )
pathCheck( 'ofdatapath', 'ofprotocol',
moduleName='the OpenFlow reference user switch (openflow.org)' )
if self.listenPort:
self.opts += ' --listen=ptcp:%i ' % self.listenPort
@classmethod
def setup( cls ):
@@ -678,6 +697,13 @@ class UserSwitch( Switch ):
if not os.path.exists( '/dev/net/tun' ):
moduleDeps( add=TUN )
def dpctl( self, *args ):
"Run dpctl command"
if not self.listenPort:
return "can't run dpctl w/no passive listening port"
return self.cmdPrint( 'dpctl ' + ' '.join( args ) +
' tcp:127.0.0.1:%i' % self.listenPort )
def start( self, controllers ):
"""Start OpenFlow reference user datapath.
Log to /tmp/sN-{ofd,ofp}.log.
@@ -736,7 +762,7 @@ class OVSLegacyKernelSwitch( Switch ):
quietRun( 'ifconfig lo up' )
# Delete local datapath if it exists;
# then create a new one monitoring the given interfaces
quietRun( 'ovs-dpctl del-dp ' + self.dp )
self.cmd( 'ovs-dpctl del-dp ' + self.dp )
self.cmd( 'ovs-dpctl add-dp ' + self.dp )
ports = sorted( self.ports.values() )
if len( ports ) != ports[ -1 ] + 1 - self.portBase:
@@ -768,15 +794,6 @@ class OVSSwitch( Switch ):
name: name for switch
defaultMAC: default MAC as unsigned int; random value if None"""
Switch.__init__( self, name, **params )
# self.dp is the text name for the datapath that
# we use for ovs-vsctl. This is different from the
# dpid, which is a 64-bit numerical value used by
# the openflow protocol.
self.dp = name
if self.inNamespace:
error( "OVSSwitch currently only works"
" in the root namespace.\n" )
exit( 1 )
@classmethod
def setup( cls ):
@@ -796,32 +813,47 @@ class OVSSwitch( Switch ):
'"service openvswitch-switch start".\n' )
exit( 1 )
def dpctl( self, *args ):
"Run ovs-dpctl command"
return self.cmd( 'ovs-dpctl', args[ 0 ], self, *args[ 1: ] )
def attach( self, intf ):
"Connect a data port"
self.cmd( 'ovs-vsctl add-port', self, intf )
self.cmd( 'ifconfig', intf, 'up' )
def detach( self, intf ):
"Disconnect a data port"
self.cmd( 'ovs-vsctl del-port', self, intf )
def start( self, controllers ):
"Start up a new OVS OpenFlow switch using ovs-vsctl"
if self.inNamespace:
raise Exception(
raise Exception(
'OVS kernel switch does not work in a namespace' )
# We should probably call config instead, but this
# requires some rethinking...
self.cmd( 'ifconfig lo up' )
# Annoyingly, --if-exists option seems not to work
self.cmd( 'ovs-vsctl del-br ', self.dp )
self.cmd( 'ovs-vsctl add-br', self.dp )
self.cmd( 'ovs-vsctl set-fail-mode', self.dp, 'secure' )
ports = sorted( self.ports.values() )
intfs = [ self.intfs[ port ] for port in ports ]
self.cmd( 'ovs-vsctl del-br', self )
self.cmd( 'ovs-vsctl add-br', self )
self.cmd( 'ovs-vsctl set-fail-mode', self, 'secure' )
# XXX: Ugly check - we should probably fix this!
ports = sorted( self.ports.values() )
if ports and ( len( ports ) != ports[ -1 ] + 1 - self.portBase ):
raise Exception( 'only contiguous, one-indexed port ranges '
'supported: %s' % self.intfs )
for intf in intfs:
self.cmd( 'ovs-vsctl add-port', self.dp, intf )
self.cmd( 'ifconfig', intf, 'up' )
for intf in self.intfList():
if not intf.IP():
self.attach( intf )
# Add controllers
clist = ','.join( [ 'tcp:%s:%d' % ( c.IP(), c.port )
for c in controllers ] )
self.cmd( 'ovs-vsctl set-controller', self.dp, clist )
self.cmd( 'ovs-vsctl set-controller', self, clist )
def stop( self ):
"Terminate OVS switch."
self.cmd( 'ovs-vsctl del-br', self.dp )
self.cmd( 'ovs-vsctl del-br', self )
OVSKernelSwitch = OVSSwitch
@@ -865,6 +897,12 @@ class Controller( Node ):
ip = self.ip
return ip
def __repr__( self ):
"More informative string representation"
return '<%s %s: %s:%s pid=%s> ' % (
self.__class__.__name__, self.name,
self.IP(), self.port, self.pid )
class OVSController( Controller ):
"Open vSwitch controller"